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use stronger video compression (lower bitrate & lower resolution)

This commit is contained in:
Daniel Gultsch 2018-09-28 18:38:54 +02:00
parent 7e21d80de2
commit bb6b647af8
3 changed files with 141 additions and 1 deletions
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4
src/main/java/eu/siacs/conversations/services/AttachFileToConversationRunnable.java
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@ -23,6 +23,8 @@ import eu.siacs.conversations.entities.DownloadableFile;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.persistance.FileBackend;
import eu.siacs.conversations.ui.UiCallback;
import eu.siacs.conversations.utils.Android360pFormatStrategy;
import eu.siacs.conversations.utils.Android480pFormatStrategy;
import eu.siacs.conversations.utils.MimeUtils;
public class AttachFileToConversationRunnable implements Runnable, MediaTranscoder.Listener {
@ -90,7 +92,7 @@ public class AttachFileToConversationRunnable implements Runnable, MediaTranscod
message.setRelativeFilePath(message.getUuid() + ".mp4");
final DownloadableFile file = mXmppConnectionService.getFileBackend().getFile(message);
final int runtime = mXmppConnectionService.getFileBackend().getMediaRuntime(uri);
MediaFormatStrategy formatStrategy = runtime >= 8000 ? MediaFormatStrategyPresets.createExportPreset960x540Strategy() : MediaFormatStrategyPresets.createAndroid720pStrategy();
final MediaFormatStrategy formatStrategy = runtime >= 20000 ? new Android360pFormatStrategy() : new Android480pFormatStrategy();
file.getParentFile().mkdirs();
final ParcelFileDescriptor parcelFileDescriptor = mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
if (parcelFileDescriptor == null) {

69
src/main/java/eu/siacs/conversations/utils/Android360pFormatStrategy.java Normal file
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@ -0,0 +1,69 @@
package eu.siacs.conversations.utils;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;
import android.util.Log;
import net.ypresto.androidtranscoder.format.MediaFormatExtraConstants;
import net.ypresto.androidtranscoder.format.MediaFormatStrategy;
import net.ypresto.androidtranscoder.format.OutputFormatUnavailableException;
import eu.siacs.conversations.Config;
public class Android360pFormatStrategy implements MediaFormatStrategy {
private static final int LONGER_LENGTH = 640;
private static final int SHORTER_LENGTH = 360;
private static final int DEFAULT_VIDEO_BITRATE = 1000 * 1000; // 1000 kbit/s upper range of what YouTube recommends
private static final int DEFAULT_AUDIO_BITRATE = 96 * 1000;
private final int mVideoBitrate;
private final int mAudioBitrate;
private final int mAudioChannels;
public Android360pFormatStrategy() {
mVideoBitrate = DEFAULT_VIDEO_BITRATE;
mAudioBitrate = DEFAULT_AUDIO_BITRATE;
mAudioChannels = 2;
}
@Override
public MediaFormat createVideoOutputFormat(MediaFormat inputFormat) {
int width = inputFormat.getInteger(MediaFormat.KEY_WIDTH);
int height = inputFormat.getInteger(MediaFormat.KEY_HEIGHT);
int longer, shorter, outWidth, outHeight;
if (width >= height) {
longer = width;
shorter = height;
outWidth = LONGER_LENGTH;
outHeight = SHORTER_LENGTH;
} else {
shorter = width;
longer = height;
outWidth = SHORTER_LENGTH;
outHeight = LONGER_LENGTH;
}
if (longer * 9 != shorter * 16) {
throw new OutputFormatUnavailableException("This video is not 16:9, and is not able to transcode. (" + width + "x" + height + ")");
}
if (shorter <= SHORTER_LENGTH) {
Log.d(Config.LOGTAG, "This video is less or equal to 360p, pass-through. (" + width + "x" + height + ")");
return null;
}
MediaFormat format = MediaFormat.createVideoFormat("video/avc", outWidth, outHeight);
// From Nexus 4 Camera in 720p
format.setInteger(MediaFormat.KEY_BIT_RATE, mVideoBitrate);
format.setInteger(MediaFormat.KEY_FRAME_RATE, 30);
format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 3);
format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
return format;
}
@Override
public MediaFormat createAudioOutputFormat(MediaFormat inputFormat) {
final MediaFormat format = MediaFormat.createAudioFormat(MediaFormatExtraConstants.MIMETYPE_AUDIO_AAC, inputFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE), mAudioChannels);
format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);
format.setInteger(MediaFormat.KEY_BIT_RATE, mAudioBitrate);
return format;
}
}

69
src/main/java/eu/siacs/conversations/utils/Android480pFormatStrategy.java Normal file
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@ -0,0 +1,69 @@
package eu.siacs.conversations.utils;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;
import android.util.Log;
import net.ypresto.androidtranscoder.format.MediaFormatExtraConstants;
import net.ypresto.androidtranscoder.format.MediaFormatStrategy;
import net.ypresto.androidtranscoder.format.OutputFormatUnavailableException;
import eu.siacs.conversations.Config;
public class Android480pFormatStrategy implements MediaFormatStrategy {
private static final int LONGER_LENGTH = 854;
private static final int SHORTER_LENGTH = 480;
private static final int DEFAULT_VIDEO_BITRATE = 2000 * 1000; // 2000 kbit/s upper range of what YouTube recommends
private static final int DEFAULT_AUDIO_BITRATE = 96 * 1000;
private final int mVideoBitrate;
private final int mAudioBitrate;
private final int mAudioChannels;
public Android480pFormatStrategy() {
mVideoBitrate = DEFAULT_VIDEO_BITRATE;
mAudioBitrate = DEFAULT_AUDIO_BITRATE;
mAudioChannels = 2;
}
@Override
public MediaFormat createVideoOutputFormat(MediaFormat inputFormat) {
int width = inputFormat.getInteger(MediaFormat.KEY_WIDTH);
int height = inputFormat.getInteger(MediaFormat.KEY_HEIGHT);
int longer, shorter, outWidth, outHeight;
if (width >= height) {
longer = width;
shorter = height;
outWidth = LONGER_LENGTH;
outHeight = SHORTER_LENGTH;
} else {
shorter = width;
longer = height;
outWidth = SHORTER_LENGTH;
outHeight = LONGER_LENGTH;
}
if (longer * 9 != shorter * 16) {
throw new OutputFormatUnavailableException("This video is not 16:9, and is not able to transcode. (" + width + "x" + height + ")");
}
if (shorter <= SHORTER_LENGTH) {
Log.d(Config.LOGTAG, "This video is less or equal to 360p, pass-through. (" + width + "x" + height + ")");
return null;
}
MediaFormat format = MediaFormat.createVideoFormat("video/avc", outWidth, outHeight);
// From Nexus 4 Camera in 720p
format.setInteger(MediaFormat.KEY_BIT_RATE, mVideoBitrate);
format.setInteger(MediaFormat.KEY_FRAME_RATE, 30);
format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 3);
format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
return format;
}
@Override
public MediaFormat createAudioOutputFormat(MediaFormat inputFormat) {
final MediaFormat format = MediaFormat.createAudioFormat(MediaFormatExtraConstants.MIMETYPE_AUDIO_AAC, inputFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE), mAudioChannels);
format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);
format.setInteger(MediaFormat.KEY_BIT_RATE, mAudioBitrate);
return format;
}
}