Add FOV slider for spherical render methods

Before uploading to YouTube, convert all spherical non-mp4 files to mp4 to be able to inject metadata
Properly re-throw errors during the rendering pipeline

src/main/java/com/replaymod/extras/youtube/YoutubeUploader.java

@@ -21,6 +21,7 @@ import com.google.api.services.youtube.model.VideoSnippet;
 import com.google.api.services.youtube.model.VideoStatus;
 import com.google.common.base.Supplier;
 import com.google.common.base.Suppliers;
+import com.google.common.io.Files;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.google.common.util.concurrent.SettableFuture;
 import com.replaymod.render.RenderSettings;
@@ -41,8 +42,7 @@ import static com.replaymod.extras.ReplayModExtras.LOGGER;
 public class YoutubeUploader {
     private static final String CLIENT_ID = "743126594724-mfe7pj1k7e47uu5pk4503c8st9vj9ibu.apps.googleusercontent.com";
     private static final String CLIENT_SECRET = "gMwcy3mRYCRamCIjJIYP7rqc";
-    private static final String FFMPEG_ODS =
+    private static final String FFMPEG_MP4 = "-i %s -c:v libx264 -preset slow -crf 16 %s";
-            "-i %s -vf scale=iw:iw*9/16,setdar=16:9 -c:v libx264 -preset slow -crf 16 %s";
     private static final JsonFactory JSON_FACTORY = new GsonFactory();
     private final NetHttpTransport httpTransport;
     private final DataStoreFactory dataStoreFactory;
@@ -131,68 +131,73 @@ public class YoutubeUploader {
     }
 
     private File preUpload() throws InterruptedException, IOException {
-        if (settings.getRenderMethod() == RenderSettings.RenderMethod.ODS) {
+        File outputFile = videoFile;
-            File tmpFile = new File(videoFile.getParentFile(), System.currentTimeMillis() + ".mp4");
-            tmpFile.deleteOnExit();
 
-            String args = String.format(FFMPEG_ODS, videoFile.getName(), tmpFile.getName());
+        if (settings.getRenderMethod().isSpherical()) {
+            // inject spherical metadata for YouTube unless already done
 
-            CommandLine commandLine = new CommandLine(settings.getExportCommand());
+            boolean isMp4 = Files.getFileExtension(outputFile.getName()).equalsIgnoreCase("mp4");
-            commandLine.addArguments(args);
-            LOGGER.info("Re-encoding for ODS with {} {}", settings.getExportCommand(), args);
-            Process process = new ProcessBuilder(commandLine.toStrings()).directory(videoFile.getParentFile()).start();
 
-            final AtomicBoolean active = new AtomicBoolean(true);
+            if (!isMp4) {
-            final InputStream in = process.getErrorStream();
+                // convert non-mp4 videos into mp4 format to be able to inject metadata
-            new Thread(() -> {
+                outputFile = new File(outputFile.getParentFile(), System.currentTimeMillis() + ".mp4");
-                try {
+                outputFile.deleteOnExit();
-                    StringBuilder sb = new StringBuilder();
+
-                    while (active.get()) {
+                String args = String.format(FFMPEG_MP4, videoFile.getName(), outputFile.getName());
-                        char c = (char) in.read();
+
-                        if (c == '\r') {
+                CommandLine commandLine = new CommandLine(settings.getExportCommandOrDefault());
-                            String str = sb.toString();
+                commandLine.addArguments(args);
-                            LOGGER.debug("[FFmpeg] {}", str);
+                LOGGER.info("Re-encoding for metadata injection with {} {}", settings.getExportCommand(), args);
-                            if (str.startsWith("frame=")) {
+                Process process = new ProcessBuilder(commandLine.toStrings()).directory(outputFile.getParentFile()).start();
-                                str = str.substring(6).trim();
+
-                                str = str.substring(0, str.indexOf(' '));
+                final AtomicBoolean active = new AtomicBoolean(true);
-                                double frame = Integer.parseInt(str);
+                final InputStream in = process.getErrorStream();
-                                progress = Suppliers.ofInstance(frame / videoFrames);
+                new Thread(() -> {
+                    try {
+                        StringBuilder sb = new StringBuilder();
+                        while (active.get()) {
+                            char c = (char) in.read();
+                            if (c == '\r') {
+                                String str = sb.toString();
+                                LOGGER.debug("[FFmpeg] {}", str);
+                                if (str.startsWith("frame=")) {
+                                    str = str.substring(6).trim();
+                                    str = str.substring(0, str.indexOf(' '));
+                                    double frame = Integer.parseInt(str);
+                                    progress = Suppliers.ofInstance(frame / videoFrames);
+                                }
+                                sb = new StringBuilder();
+                            } else {
+                                sb.append(c);
                             }
-                            sb = new StringBuilder();
-                        } else {
-                            sb.append(c);
                         }
+                    } catch (IOException e) {
+                        e.printStackTrace();
                     }
-                } catch (IOException e) {
+                }).start();
-                    e.printStackTrace();
+
+                int result;
+                try {
+                    result = process.waitFor();
+                } catch (InterruptedException e) {
+                    process.destroy();
+                    throw e;
+                } finally {
+                    active.set(false);
+                }
+                if (result != 0) {
+                    throw new IOException("FFmpeg returned: " + result);
                 }
-            }).start();
-
-            int result;
-            try {
-                result = process.waitFor();
-            } catch (InterruptedException e) {
-                process.destroy();
-                throw e;
-            } finally {
-                active.set(false);
-            }
-            if (result != 0) {
-                throw new IOException("FFmpeg returned: " + result);
             }
 
-            MetadataInjector.injectODSMetadata(tmpFile);
+            if (!settings.isInjectSphericalMetadata() || !isMp4) {
-
+                MetadataInjector.injectMetadata(settings.getRenderMethod(), outputFile,
-            return tmpFile;
+                        settings.getTargetVideoWidth(), settings.getTargetVideoHeight(),
-
+                        settings.getSphericalFovX(), settings.getSphericalFovY());
-        } else if (settings.getRenderMethod() == RenderSettings.RenderMethod.EQUIRECTANGULAR) {
-            // if metadata hasn't been injected before, inject it before the upload
-            if (!settings.isInject360Metadata()) {
-                MetadataInjector.inject360Metadata(videoFile);
             }
         }
 
-        return videoFile;
+        return outputFile;
     }
 
     private Video doUpload(YouTube youTube, File processedFile) throws IOException {

src/main/java/com/replaymod/render/RenderSettings.java

@@ -3,10 +3,23 @@ package com.replaymod.render;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.Getter;
+import net.minecraft.client.Minecraft;
 import net.minecraft.client.resources.I18n;
+import net.minecraft.util.Util;
 import org.lwjgl.util.ReadableColor;
 
 import java.io.File;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.Optional;
+
+import static com.replaymod.render.ReplayModRender.LOGGER;
+
+//#if MC>=10800
+import net.minecraftforge.fml.common.versioning.ComparableVersion;
+//#else
+//$$ import cpw.mods.fml.common.versioning.ComparableVersion;
+//#endif
 
 @Data
 public class RenderSettings {
@@ -21,6 +34,14 @@ public class RenderSettings {
         public String getDescription() {
             return I18n.format("replaymod.gui.rendersettings.renderer." + name().toLowerCase() + ".description");
         }
+
+        public boolean isSpherical() {
+            return this == EQUIRECTANGULAR || this == ODS;
+        }
+
+        public boolean hasFixedAspectRatio() {
+            return this == EQUIRECTANGULAR || this == ODS || this == CUBIC;
+        }
     }
 
     public enum EncodingPreset {
@@ -92,7 +113,9 @@ public class RenderSettings {
     private final boolean stabilizePitch;
     private final boolean stabilizeRoll;
     private final ReadableColor chromaKeyingColor;
-    private final boolean inject360Metadata;
+    private final int sphericalFovX;
+    private final int sphericalFovY;
+    private final boolean injectSphericalMetadata;
     private final AntiAliasing antiAliasing;
 
     private final String exportCommand;
@@ -129,12 +152,66 @@ public class RenderSettings {
     }
 
     public String getVideoFilters() {
-        if (antiAliasing == AntiAliasing.NONE) {
+        StringBuilder filters = new StringBuilder();
-            return "";
+
-        } else {
+        if (antiAliasing != AntiAliasing.NONE) {
             double factor = 1.0 / antiAliasing.getFactor();
-            return String.format("-vf scale=iw*%1$s:ih*%1$s ", factor);
+            filters.append(String.format("-filter:v scale=iw*%1$s:ih*%1$s ", factor));
         }
+
+        return filters.toString();
+    }
+
+    public String getExportCommandOrDefault() {
+        return exportCommand.isEmpty() ? findFFmpeg() : exportCommand;
+    }
+
+    private static String findFFmpeg() {
+        switch (Util.getOSType()) {
+            case WINDOWS:
+                // Allow windows users to unpack the ffmpeg archive into a sub-folder of their .minecraft folder
+                File inDotMinecraft = new File(Minecraft.getMinecraft().mcDataDir, "ffmpeg/bin/ffmpeg.exe");
+                if (inDotMinecraft.exists()) {
+                    LOGGER.debug("FFmpeg found in .minecraft/ffmpeg");
+                    return inDotMinecraft.getAbsolutePath();
+                }
+                break;
+            case OSX:
+                // The PATH doesn't seem to be set as expected on OSX, therefore we check some common locations ourselves
+                for (String path : new String[]{"/usr/local/bin/ffmpeg", "/usr/bin/ffmpeg"}) {
+                    File file = new File(path);
+                    if (file.exists()) {
+                        LOGGER.debug("Found FFmpeg at {}", path);
+                        return path;
+                    } else {
+                        LOGGER.debug("FFmpeg not located at {}", path);
+                    }
+                }
+                // Homebrew doesn't seem to reliably symlink its installed binaries either
+                File homebrewFolder = new File("/usr/local/Cellar/ffmpeg");
+                String[] homebrewVersions = homebrewFolder.list();
+                if (homebrewVersions != null) {
+                    Optional<File> latestOpt = Arrays.stream(homebrewVersions)
+                            .map(ComparableVersion::new) // Convert file name to comparable version
+                            .sorted(Comparator.reverseOrder()) // Sort for latest version
+                            .map(ComparableVersion::toString) // Convert back to file name
+                            .map(v -> new File(new File(homebrewFolder, v), "bin/ffmpeg")) // Convert to binary files
+                            .filter(File::exists) // Filter invalid installations (missing executable)
+                            .findFirst(); // Take first one
+                    if (latestOpt.isPresent()) {
+                        File latest = latestOpt.get();
+                        LOGGER.debug("Found {} versions of FFmpeg installed with homebrew, chose {}",
+                                homebrewVersions.length, latest);
+                        return latest.getAbsolutePath();
+                    }
+                }
+                break;
+            case LINUX: // Linux users are entrusted to have their PATH configured correctly (most package manager do this)
+            case SOLARIS: // Never heard of anyone running this mod on Solaris having any problems
+            case UNKNOWN: // Unknown OS, just try to use "ffmpeg"
+        }
+        LOGGER.debug("Using default FFmpeg executable");
+        return "ffmpeg";
     }
 
 }

src/main/java/com/replaymod/render/VideoWriter.java

@@ -8,7 +8,6 @@ import com.replaymod.render.utils.StreamPipe;
 import net.minecraft.client.Minecraft;
 import net.minecraft.crash.CrashReport;
 import net.minecraft.crash.CrashReportCategory;
-import net.minecraft.util.Util;
 import org.apache.commons.exec.CommandLine;
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
@@ -22,17 +21,8 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.nio.channels.Channels;
 import java.nio.channels.WritableByteChannel;
-import java.util.Arrays;
-import java.util.Comparator;
-import java.util.Optional;
 import java.util.concurrent.TimeUnit;
 
-//#if MC>=10800
-import net.minecraftforge.fml.common.versioning.ComparableVersion;
-//#else
-//$$ import cpw.mods.fml.common.versioning.ComparableVersion;
-//#endif
-
 import static com.replaymod.render.ReplayModRender.LOGGER;
 import static org.apache.commons.lang3.Validate.isTrue;
 
@@ -64,7 +54,7 @@ public class VideoWriter implements FrameConsumer<RGBFrame> {
                     .replace("%BITRATE%", String.valueOf(settings.getBitRate()))
                     .replace("%FILTERS%", settings.getVideoFilters());
 
-        String executable = settings.getExportCommand().isEmpty() ? findFFmpeg() : settings.getExportCommand();
+        String executable = settings.getExportCommandOrDefault();
         LOGGER.info("Starting {} with args: {}", executable, commandArgs);
         String[] cmdline;
         try {
@@ -86,54 +76,6 @@ public class VideoWriter implements FrameConsumer<RGBFrame> {
         channel = Channels.newChannel(outputStream);
     }
 
-    private String findFFmpeg() {
-        switch (Util.getOSType()) {
-            case WINDOWS:
-                // Allow windows users to unpack the ffmpeg archive into a sub-folder of their .minecraft folder
-                File inDotMinecraft = new File(Minecraft.getMinecraft().mcDataDir, "ffmpeg/bin/ffmpeg.exe");
-                if (inDotMinecraft.exists()) {
-                    LOGGER.debug("FFmpeg found in .minecraft/ffmpeg");
-                    return inDotMinecraft.getAbsolutePath();
-                }
-                break;
-            case OSX:
-                // The PATH doesn't seem to be set as expected on OSX, therefore we check some common locations ourselves
-                for (String path : new String[]{"/usr/local/bin/ffmpeg", "/usr/bin/ffmpeg"}) {
-                    File file = new File(path);
-                    if (file.exists()) {
-                        LOGGER.debug("Found FFmpeg at {}", path);
-                        return path;
-                    } else {
-                        LOGGER.debug("FFmpeg not located at {}", path);
-                    }
-                }
-                // Homebrew doesn't seem to reliably symlink its installed binaries either
-                File homebrewFolder = new File("/usr/local/Cellar/ffmpeg");
-                String[] homebrewVersions = homebrewFolder.list();
-                if (homebrewVersions != null) {
-                    Optional<File> latestOpt = Arrays.stream(homebrewVersions)
-                            .map(ComparableVersion::new) // Convert file name to comparable version
-                            .sorted(Comparator.reverseOrder()) // Sort for latest version
-                            .map(ComparableVersion::toString) // Convert back to file name
-                            .map(v -> new File(new File(homebrewFolder, v), "bin/ffmpeg")) // Convert to binary files
-                            .filter(File::exists) // Filter invalid installations (missing executable)
-                            .findFirst(); // Take first one
-                    if (latestOpt.isPresent()) {
-                        File latest = latestOpt.get();
-                        LOGGER.debug("Found {} versions of FFmpeg installed with homebrew, chose {}",
-                                homebrewVersions.length, latest);
-                        return latest.getAbsolutePath();
-                    }
-                }
-                break;
-            case LINUX: // Linux users are entrusted to have their PATH configured correctly (most package manager do this)
-            case SOLARIS: // Never heard of anyone running this mod on Solaris having any problems
-            case UNKNOWN: // Unknown OS, just try to use "ffmpeg"
-        }
-        LOGGER.debug("Using default FFmpeg executable");
-        return "ffmpeg";
-    }
-
     @Override
     public void close() throws IOException {
         IOUtils.closeQuietly(outputStream);

src/main/java/com/replaymod/render/gui/GuiExportFailed.java

@@ -93,7 +93,9 @@ public class GuiExportFailed extends GuiScreen {
                     oldSettings.isStabilizePitch(),
                     oldSettings.isStabilizeRoll(),
                     oldSettings.getChromaKeyingColor(),
-                    oldSettings.isInject360Metadata(),
+                    oldSettings.getSphericalFovX(),
+                    oldSettings.getSphericalFovY(),
+                    oldSettings.isInjectSphericalMetadata(),
                     oldSettings.getAntiAliasing(),
                     oldSettings.getExportCommand(),
                     oldSettings.getEncodingPreset().getValue(),

src/main/java/com/replaymod/render/gui/GuiRenderSettings.java

@@ -1,5 +1,6 @@
 package com.replaymod.render.gui;
 
+import com.google.common.base.Preconditions;
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import com.google.gson.Gson;
@@ -149,6 +150,20 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
             .setI18nLabel("replaymod.gui.rendersettings.chromakey");
     public final GuiColorPicker chromaKeyingColor = new GuiColorPicker().setSize(30, 15);
 
+    public final int minSphericalFov = 120;
+    public final int maxSphericalFov = 360;
+    public final int sphericalFovSteps = 5;
+    public final GuiSlider sphericalFovSlider = new GuiSlider()
+            .onValueChanged(new Runnable() {
+                @Override
+                public void run() {
+                    sphericalFovSlider.setText(I18n.format("replaymod.gui.rendersettings.sphericalFov")
+                            + ": " + (minSphericalFov + sphericalFovSlider.getValue() * sphericalFovSteps) + "°");
+
+                    updateInputs();
+                }
+            }).setSize(200, 20).setSteps((maxSphericalFov - minSphericalFov) / sphericalFovSteps);
+
     public final GuiCheckbox inject360Metadata = new GuiCheckbox()
             .setI18nLabel("replaymod.gui.rendersettings.360metadata");
 
@@ -161,8 +176,7 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
                     .addElements(new GridLayout.Data(0, 0.5),
                             new GuiLabel().setI18nText("replaymod.gui.rendersettings.stabilizecamera"), stabilizePanel,
                             chromaKeyingCheckbox, chromaKeyingColor,
-                            inject360Metadata,
+                            inject360Metadata, sphericalFovSlider,
-                            new GuiLabel(), // to show the anti-aliasing options in a new line
                             new GuiLabel().setI18nText("replaymod.gui.rendersettings.antialiasing"), antiAliasingDropdown));
 
     public final GuiTextField exportCommand = new GuiTextField().setI18nHint("replaymod.gui.rendersettings.command")
@@ -289,6 +303,11 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
     }
 
     protected void updateInputs() {
+        RenderSettings.RenderMethod renderMethod = renderMethodDropdown.getSelectedValue();
+
+        // Enable/Disable video with input
+        videoWidth.setEnabled(!renderMethod.hasFixedAspectRatio());
+
         // Validate video width and height
         String error = isResolutionValid();
         if (error == null) {
@@ -311,7 +330,7 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
         }
 
         // Enable/Disable camera stabilization checkboxes
-        switch (renderMethodDropdown.getSelectedValue()) {
+        switch (renderMethod) {
             case CUBIC:
             case EQUIRECTANGULAR:
             case ODS:
@@ -321,10 +340,12 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
                 stabilizePanel.forEach(IGuiCheckbox.class).setDisabled();
         }
 
+        // Enable/Disable Spherical FOV slider
+        sphericalFovSlider.setEnabled(renderMethod.isSpherical());
+
         // Enable/Disable inject metadata checkbox
         if (encodingPresetDropdown.getSelectedValue().getFileExtension().equals("mp4")
-                && (renderMethodDropdown.getSelectedValue() == RenderSettings.RenderMethod.EQUIRECTANGULAR
+                && renderMethod.isSpherical()) {
-                || renderMethodDropdown.getSelectedValue() == RenderSettings.RenderMethod.ODS)) {
             inject360Metadata.setEnabled().setTooltip(null);
         } else {
             inject360Metadata.setDisabled().setTooltip(new GuiTooltip().setColor(Colors.RED)
@@ -335,33 +356,72 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
     protected String isResolutionValid() {
         RenderSettings.EncodingPreset preset = encodingPresetDropdown.getSelectedValue();
         RenderSettings.RenderMethod method = renderMethodDropdown.getSelectedValue();
-        int videoWidth = this.videoWidth.getInteger();
+
         int videoHeight = this.videoHeight.getInteger();
+        int videoWidth;
+        if (method.hasFixedAspectRatio()) {
+            // cubic rendering requires an aspect ratio of 4:3,
+            // therefore the height must be divisible by 3
+            if (method == RenderSettings.RenderMethod.CUBIC && videoHeight % 3 != 0) {
+                return "replaymod.gui.rendersettings.customresolution.warning.cubic.height";
+            }
+
+            int sphericalFov = minSphericalFov + sphericalFovSlider.getValue() * sphericalFovSteps;
+            videoWidth = videoWidthForHeight(method, videoHeight, sphericalFov, sphericalFov);
+
+            this.videoWidth.setValue(videoWidth); // TODO: isResolutionValid should not have side-effects
+        } else {
+            videoWidth = this.videoWidth.getInteger();
+        }
 
         // Make sure the export arguments haven't been changed manually
         if (exportArguments.getText().equals(preset.getValue())) {
             // Yuv420 requires both dimensions to be even
             if (preset.isYuv420()
                     && (videoWidth % 2 != 0 || videoHeight % 2 != 0)) {
+
+                if (method == RenderSettings.RenderMethod.CUBIC) {
+                    // cubic yuv rendering has the special case that the height must be
+                    // divisible by both 3 and 2 - tell the user about it with a special message
+                    return "replaymod.gui.rendersettings.customresolution.warning.yuv420.cubic";
+                }
+
                 return "replaymod.gui.rendersettings.customresolution.warning.yuv420";
             }
         }
 
-        if (method == RenderSettings.RenderMethod.CUBIC
-                && (videoWidth * 3 / 4 != videoHeight || videoWidth * 3 % 4 != 0)) {
-            return "replaymod.gui.rendersettings.customresolution.warning.cubic";
-        }
-        if (method == RenderSettings.RenderMethod.EQUIRECTANGULAR
-                && (videoWidth / 2 != videoHeight || videoWidth % 2 != 0)) {
-            return "replaymod.gui.rendersettings.customresolution.warning.equirectangular";
-        }
-        if (method == RenderSettings.RenderMethod.ODS
-                && videoWidth != videoHeight) {
-            return "replaymod.gui.rendersettings.customresolution.warning.ods";
-        }
         return null;
     }
 
+    protected int videoWidthForHeight(RenderSettings.RenderMethod method, int height,
+                                      int sphericalFovX, int sphericalFovY) {
+        if (method.isSpherical()) {
+            if (sphericalFovY < 180) {
+                // calculate the non-cropped height of the video
+                height = Math.round(height * 180 / (float) sphericalFovY);
+            }
+
+            int width = height * 2;
+
+            if (sphericalFovX < 360) {
+                // crop the resulting width
+                width = Math.round(width * (float) sphericalFovX / 360);
+            }
+
+            if (method == RenderSettings.RenderMethod.ODS) {
+                width = Math.round(width / 2f);
+            }
+
+            return width;
+
+        } else if (method == RenderSettings.RenderMethod.CUBIC) {
+            Preconditions.checkArgument(height % 3 == 0);
+            return height / 3 * 4;
+        }
+
+        throw new IllegalArgumentException();
+    }
+
     public void load(RenderSettings settings) {
         renderMethodDropdown.setSelected(settings.getRenderMethod());
         encodingPresetDropdown.setSelected(settings.getEncodingPreset());
@@ -397,7 +457,8 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
             chromaKeyingCheckbox.setChecked(true);
             chromaKeyingColor.setColor(settings.getChromaKeyingColor());
         }
-        inject360Metadata.setChecked(settings.isInject360Metadata());
+        sphericalFovSlider.setValue((settings.getSphericalFovX() - minSphericalFov) / sphericalFovSteps);
+        inject360Metadata.setChecked(settings.isInjectSphericalMetadata());
         antiAliasingDropdown.setSelected(settings.getAntiAliasing());
         exportCommand.setText(settings.getExportCommand());
         exportArguments.setText(settings.getExportArguments());
@@ -406,6 +467,8 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
     }
 
     public RenderSettings save(boolean serialize) {
+        int sphericalFov = minSphericalFov + sphericalFovSlider.getValue() * sphericalFovSteps;
+
         return new RenderSettings(
                 renderMethodDropdown.getSelectedValue(),
                 encodingPresetDropdown.getSelectedValue(),
@@ -419,6 +482,7 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
                 stabilizePitch.isChecked() && (serialize || stabilizePitch.isEnabled()),
                 stabilizeRoll.isChecked() && (serialize || stabilizeRoll.isEnabled()),
                 chromaKeyingCheckbox.isChecked() ? chromaKeyingColor.getColor() : null,
+                sphericalFov, sphericalFov,
                 inject360Metadata.isChecked() && (serialize || inject360Metadata.isEnabled()),
                 antiAliasingDropdown.getSelectedValue(),
                 exportCommand.getText(),
@@ -435,7 +499,7 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
 
     private RenderSettings getDefaultRenderSettings() {
         return new RenderSettings(RenderSettings.RenderMethod.DEFAULT, RenderSettings.EncodingPreset.MP4_DEFAULT, 1920, 1080, 60, 10 << 20, null,
-                true, false, false, false, null, false, RenderSettings.AntiAliasing.NONE, "", RenderSettings.EncodingPreset.MP4_DEFAULT.getValue(), false);
+                true, false, false, false, null, 360, 180, false, RenderSettings.AntiAliasing.NONE, "", RenderSettings.EncodingPreset.MP4_DEFAULT.getValue(), false);
     }
 
     @Override

src/main/java/com/replaymod/render/metadata/MetadataInjector.java

@@ -4,8 +4,10 @@ import com.coremedia.iso.IsoFile;
 import com.coremedia.iso.boxes.*;
 import com.google.common.primitives.Bytes;
 import com.googlecode.mp4parser.BasicContainer;
+import com.replaymod.render.RenderSettings;
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
+import org.lwjgl.util.Dimension;
 
 import java.io.File;
 import java.io.FileOutputStream;
@@ -30,12 +32,20 @@ public class MetadataInjector {
             "<GSpherical:Stitched>true</GSpherical:Stitched> " +
             "<GSpherical:StitchingSoftware>"+STITCHING_SOFTWARE+"</GSpherical:StitchingSoftware> " +
             "<GSpherical:ProjectionType>equirectangular</GSpherical:ProjectionType> ";
+    private static final String SPHERICAL_CROP_XML =
+            "<GSpherical:FullPanoWidthPixels>%d</GSpherical:FullPanoWidthPixels> " +
+            "<GSpherical:FullPanoHeightPixels>%d</GSpherical:FullPanoHeightPixels> " +
+            "<GSpherical:CroppedAreaImageWidthPixels>%d</GSpherical:CroppedAreaImageWidthPixels> " +
+            "<GSpherical:CroppedAreaImageHeightPixels>%d</GSpherical:CroppedAreaImageHeightPixels> " +
+            "<GSpherical:CroppedAreaLeftPixels>%d</GSpherical:CroppedAreaLeftPixels> " +
+            "<GSpherical:CroppedAreaTopPixels>%d</GSpherical:CroppedAreaTopPixels> ";
     private static final String STEREO_XML_CONTENTS = "<GSpherical:StereoMode>top-bottom</GSpherical:StereoMode>";
     private static final String SPHERICAL_XML_FOOTER = "</rdf:SphericalVideo>";
 
-    private static final String XML_360_METADATA = SPHERICAL_XML_HEADER + SPHERICAL_XML_CONTENTS + SPHERICAL_XML_FOOTER;
+    private static final String XML_MONO_METADATA = SPHERICAL_XML_HEADER + SPHERICAL_XML_CONTENTS
-    private static final String XML_ODS_METADATA = SPHERICAL_XML_HEADER + SPHERICAL_XML_CONTENTS
+            + SPHERICAL_CROP_XML + SPHERICAL_XML_FOOTER;
-            + STEREO_XML_CONTENTS + SPHERICAL_XML_FOOTER;
+    private static final String XML_STEREO_METADATA = SPHERICAL_XML_HEADER + SPHERICAL_XML_CONTENTS
+            + SPHERICAL_CROP_XML + STEREO_XML_CONTENTS + SPHERICAL_XML_FOOTER;
 
     /**
      * These bytes are taken from the variable 'spherical_uuid_id'
@@ -48,18 +58,43 @@ public class MetadataInjector {
             (byte)0x02, (byte)0x52, (byte)0x1f, (byte)0xdd
     };
 
-    private static final byte[] BYTES_360_METADATA = Bytes.concat(UUID_BYTES, XML_360_METADATA.getBytes());
+    public static void injectMetadata(RenderSettings.RenderMethod renderMethod, File videoFile,
-    private static final byte[] BYTES_ODS_METADATA = Bytes.concat(UUID_BYTES, XML_ODS_METADATA.getBytes());
+                                      int videoWidth, int videoHeight,
+                                      int sphericalFovX, int sphericalFovY) {
+        String xmlString;
+        switch (renderMethod) {
+            case EQUIRECTANGULAR:
+                xmlString = XML_MONO_METADATA;
+                break;
+            case ODS:
+                xmlString = XML_STEREO_METADATA;
+                break;
+            default:
+                throw new IllegalArgumentException("Invalid render method");
+        }
 
-    public static void inject360Metadata(File videoFile) {
+        Dimension original = getOriginalDimensions(videoWidth, videoHeight, sphericalFovX, sphericalFovY);
-        writeMetadata(videoFile, BYTES_360_METADATA);
+        writeMetadata(videoFile, String.format(xmlString,
+                original.getWidth(), original.getHeight(), videoWidth, videoHeight,
+                (original.getWidth() - videoWidth) / 2, (original.getHeight() - videoHeight) / 2));
     }
 
-    public static void injectODSMetadata(File videoFile) {
+    private static Dimension getOriginalDimensions(int videoWidth, int videoHeight,
-        writeMetadata(videoFile, BYTES_ODS_METADATA);
+                                                   int sphericalFovX, int sphericalFovY) {
+        if (sphericalFovX < 360) {
+            videoWidth = Math.round(videoWidth * 360 / (float) sphericalFovX);
+        }
+
+        if (sphericalFovY < 180) {
+            videoHeight = Math.round(videoHeight * 180 / (float) sphericalFovY);
+        }
+
+        return new Dimension(videoWidth, videoHeight);
     }
 
-    private static void writeMetadata(File videoFile, byte[] metadata) {
+    private static void writeMetadata(File videoFile, String metadata) {
+        byte[] bytes = Bytes.concat(UUID_BYTES, metadata.getBytes());
+
         File tempFile = null;
         FileOutputStream videoFileOutputStream = null;
         IsoFile tempIsoFile = null;
@@ -80,7 +115,7 @@ public class MetadataInjector {
 
             //create a new UserBox, which actually contains the Metadata bytes
             UserBox metadataBox = new UserBox(new byte[0]);
-            metadataBox.setData(metadata);
+            metadataBox.setData(bytes);
 
             //add the Metadata UserBox to the Movie Track
             trackBox.addBox(metadataBox);
@@ -97,7 +132,7 @@ public class MetadataInjector {
             videoFileOutputStream = new FileOutputStream(videoFile);
             tempIsoFile.getBox(videoFileOutputStream.getChannel());
         } catch(Exception e) {
-            LOGGER.error("360 Degree Metadata couldn't be injected", e);
+            LOGGER.error("Spherical Metadata couldn't be injected", e);
         } finally {
             IOUtils.closeQuietly(tempIsoFile);
             IOUtils.closeQuietly(videoFileOutputStream);

src/main/java/com/replaymod/render/processor/EquirectangularToRGBProcessor.java

@@ -3,6 +3,7 @@ package com.replaymod.render.processor;
 import com.replaymod.render.frame.CubicOpenGlFrame;
 import com.replaymod.render.frame.RGBFrame;
 import com.replaymod.render.utils.ByteBufferPool;
+import lombok.Getter;
 import org.apache.commons.lang3.Validate;
 import org.lwjgl.util.Dimension;
 
@@ -18,6 +19,7 @@ public class EquirectangularToRGBProcessor extends AbstractFrameProcessor<CubicO
     private static final byte IMAGE_TOP = 4;
     private static final byte IMAGE_BOTTOM = 5;
 
+    @Getter
     private final int frameSize;
     private final int width;
     private final int height;
@@ -26,18 +28,36 @@ public class EquirectangularToRGBProcessor extends AbstractFrameProcessor<CubicO
     private final int[][] imageX;
     private final int[][] imageY;
 
+    public EquirectangularToRGBProcessor(int outputWidth, int outputHeight, int sphericalFovX) {
+        // calculate the dimensions of the original equirectangular projection
+        // (before cropping according to FOV)
+        width = outputWidth;
+        height = outputHeight;
 
-    public EquirectangularToRGBProcessor(int frameSize) {
+        int fullWidth;
-        this.frameSize = frameSize;
+        if (sphericalFovX < 360) {
+            fullWidth = Math.round(width * 360 / (float) sphericalFovX);
+        } else {
+            fullWidth = width;
+        }
+
+        int fullHeight = fullWidth / 2;
+
+        frameSize = fullWidth / 4;
 
-        width = frameSize * 4;
-        height = frameSize * 2;
         image = new byte[height][width];
         imageX = new int[height][width];
         imageY = new int[height][width];
-        for (int i = 0; i < width; i++) {
+
-            double yaw = PI * 2 * i / width;
+        int xOffset = (fullWidth - width) / 2;
-            int piQuarter = 8 * i / width - 4;
+        int yOffset = (fullHeight - height) / 2;
+
+        for (int x = 0; x < width; x++) {
+            // get x position relative to the full projection
+            int i = xOffset + x;
+
+            double yaw = PI * 2 * i / fullWidth;
+            int piQuarter = 8 * i / fullWidth - 4;
             byte target;
             if (piQuarter < -3) {
                 target = IMAGE_BACK;
@@ -50,13 +70,16 @@ public class EquirectangularToRGBProcessor extends AbstractFrameProcessor<CubicO
             } else {
                 target = IMAGE_BACK;
             }
-            double fYaw = (yaw + PI/4) % (PI / 2) - PI/4;
+            double fYaw = (yaw + PI / 4) % (PI / 2) - PI / 4;
             double d = 1 / Math.cos(fYaw);
             double gcXN = (Math.tan(fYaw) + 1) / 2;
-            for (int j = 0; j < height; j++) {
+            for (int y = 0; y < height; y++) {
+                // get y position relative to the full projection
+                int j = yOffset + y;
+
                 double cXN = gcXN;
                 byte pt = target;
-                double pitch = PI * j / height - PI / 2;
+                double pitch = PI * j / fullHeight - PI / 2;
                 double cYN = (Math.tan(pitch) * d + 1) / 2;
 
                 if (cYN >= 1) {
@@ -74,9 +97,9 @@ public class EquirectangularToRGBProcessor extends AbstractFrameProcessor<CubicO
 
                 int imgX = (int) Math.min(frameSize - 1, (cXN * frameSize));
                 int imgY = (int) Math.min(frameSize - 1, (cYN * frameSize));
-                image[j][i] = pt;
+                image[y][x] = pt;
-                imageX[j][i] = imgX;
+                imageX[y][x] = imgX;
-                imageY[j][i] = frameSize - imgY - 1; // The OpenGl buffer contains data flipped vertically
+                imageY[y][x] = frameSize - imgY - 1; // The OpenGl buffer contains data flipped vertically
             }
         }
     }

src/main/java/com/replaymod/render/processor/ODSToRGBProcessor.java

@@ -12,8 +12,8 @@ import java.nio.ByteBuffer;
 public class ODSToRGBProcessor extends AbstractFrameProcessor<ODSOpenGlFrame, RGBFrame> {
     private final EquirectangularToRGBProcessor processor;
 
-    public ODSToRGBProcessor(int frameSize) {
+    public ODSToRGBProcessor(int outputWidth, int outputHeight, int sphericalFovX) {
-        processor = new EquirectangularToRGBProcessor(frameSize);
+        processor = new EquirectangularToRGBProcessor(outputWidth, outputHeight / 2, sphericalFovX);
     }
 
     @Override
@@ -34,4 +34,8 @@ public class ODSToRGBProcessor extends AbstractFrameProcessor<ODSOpenGlFrame, RG
     public void close() throws IOException {
         processor.close();
     }
+
+    public int getFrameSize() {
+        return processor.getFrameSize();
+    }
 }

src/main/java/com/replaymod/render/rendering/Pipelines.java

@@ -61,19 +61,27 @@ public class Pipelines {
 
     public static Pipeline<CubicOpenGlFrame, RGBFrame> newEquirectangularPipeline(RenderInfo renderInfo, FrameConsumer<RGBFrame> consumer) {
         RenderSettings settings = renderInfo.getRenderSettings();
+
+        EquirectangularToRGBProcessor processor = new EquirectangularToRGBProcessor(settings.getVideoWidth(),
+                settings.getVideoHeight(), settings.getSphericalFovX());
+
         FrameCapturer<CubicOpenGlFrame> capturer;
         if (PixelBufferObject.SUPPORTED) {
-            capturer = new CubicPboOpenGlFrameCapturer(new EntityRendererHandler(settings, renderInfo), renderInfo, settings.getVideoWidth() / 4);
+            capturer = new CubicPboOpenGlFrameCapturer(new EntityRendererHandler(settings, renderInfo), renderInfo, processor.getFrameSize());
         } else {
-            capturer = new CubicOpenGlFrameCapturer(new EntityRendererHandler(settings, renderInfo), renderInfo, settings.getVideoWidth() / 4);
+            capturer = new CubicOpenGlFrameCapturer(new EntityRendererHandler(settings, renderInfo), renderInfo, processor.getFrameSize());
         }
-        return new Pipeline<>(capturer, new EquirectangularToRGBProcessor(settings.getVideoWidth() / 4), consumer);
+        return new Pipeline<>(capturer, processor, consumer);
     }
 
     public static Pipeline<ODSOpenGlFrame, RGBFrame> newODSPipeline(RenderInfo renderInfo, FrameConsumer<RGBFrame> consumer) {
         RenderSettings settings = renderInfo.getRenderSettings();
+
+        ODSToRGBProcessor processor = new ODSToRGBProcessor(settings.getVideoWidth(),
+                settings.getVideoHeight(), settings.getSphericalFovX());
+
         FrameCapturer<ODSOpenGlFrame> capturer =
-                new ODSFrameCapturer(new EntityRendererHandler(settings, renderInfo), renderInfo, settings.getVideoWidth() / 4);
+                new ODSFrameCapturer(new EntityRendererHandler(settings, renderInfo), renderInfo, processor.getFrameSize());
-        return new Pipeline<>(capturer, new ODSToRGBProcessor(settings.getVideoWidth() / 4), consumer);
+        return new Pipeline<>(capturer, processor, consumer);
     }
 }

src/main/java/com/replaymod/render/rendering/VideoRenderer.java

@@ -22,6 +22,7 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.ScaledResolution;
 import net.minecraft.client.renderer.OpenGlHelper;
 import net.minecraft.client.shader.Framebuffer;
+import net.minecraft.util.ReportedException;
 import net.minecraft.util.Timer;
 import org.lwjgl.input.Mouse;
 import org.lwjgl.opengl.Display;
@@ -150,12 +151,15 @@ public class VideoRenderer implements RenderInfo {
 
         renderingPipeline.run();
 
-        if (settings.isInject360Metadata()) {
+        if (mc.hasCrashed) {
-            if (settings.getRenderMethod() == RenderSettings.RenderMethod.ODS) {
+            setFailure(mc.crashReporter.getCrashCause());
-                MetadataInjector.injectODSMetadata(settings.getOutputFile());
+            throw new ReportedException(mc.crashReporter);
-            } else {
+        }
-                MetadataInjector.inject360Metadata(settings.getOutputFile());
+
-            }
+        if (settings.isInjectSphericalMetadata()) {
+            MetadataInjector.injectMetadata(settings.getRenderMethod(), settings.getOutputFile(),
+                    settings.getTargetVideoWidth(), settings.getTargetVideoHeight(),
+                    settings.getSphericalFovX(), settings.getSphericalFovY());
         }
 
         finish();