private long getVideoBitrateBasedOnFileBitrate() {
// file bitrate
String fileBitrate = conversionSetting.getFfProbe().getFormat().getBit_rate();
long fbr;
if (fileBitrate == null || fileBitrate.trim().length() == 0) {
return 0l;
} else {
try {
fbr = Long.parseLong(fileBitrate);
} catch (Exception e) {
// number format exception
return 0l;
}
}
// audio bitrate
long abr;
Stream audioStream = getStream(CODEC_TYPE_AUDIO);
String audioBitrate = audioStream.getBit_rate();
try {
abr = Long.parseLong(audioBitrate);
} catch (Exception e) {
// number format exception
abr = Settings.getDefaultPerChannelAudioBitRate() * audioStream.getChannels();
}
return fbr - abr;
}
private long getVideoBitrateBasedOnVideoStreamBitRate() {
Stream videoStream = getStream(CODEC_TYPE_VIDEO);
try {
return Long.parseLong(videoStream.getBit_rate());
} catch (Exception e) {
// number format exception
return 0l;
}
}
private int internalGetNumberOfSubtitles() {
int numberOfSubtitles = 0;
for (Stream s : conversionSetting.getFfProbe().getStreams()) {
if (CODEC_TYPE_SUBTITLE.equals(s.getCodec_type())
&& !INVALID_SUBTITLE.equals(s.getCodec_name())) {
numberOfSubtitles++;
}
}
return numberOfSubtitles;
}
private String[] internalGetSubtitle(int position) {
Stream subtitle = null;
int subtitleIndex = 0;
for (int streamIndex = 0;
streamIndex < conversionSetting.getFfProbe().getStreams().size();
streamIndex++) {
Stream s = conversionSetting.getFfProbe().getStreams().get(streamIndex);
if (CODEC_TYPE_SUBTITLE.equals(s.getCodec_type())
&& !INVALID_SUBTITLE.equals(s.getCodec_name())) {
if (position == subtitleIndex) {
subtitle = s;
}
subtitleIndex++; // increment for all valid subtitles
}
}
if (subtitle == null) return null;
// get the language code for the filename
String language = null;
Tags t = subtitle.getTags();
if (t != null) {
language = t.getLanguage();
}
if (language == null) language = "DEFAULT";
File fileName = conversionSetting.getSubtitleFileName(language);
ArrayList<String> cmd = new ArrayList<String>();
cmd.add("ffmpeg");
cmd.add("-i");
cmd.add(conversionSetting.getOriginalVideoFile().getAbsolutePath());
cmd.add("-vn");
cmd.add("-an");
cmd.add("-map");
cmd.add("0:s:" + position);
cmd.add(fileName.getAbsolutePath());
return getArray(cmd);
}
private void addAudioConversion(List<String> cmd) {
cmd.add("-c:a");
cmd.add("libfdk_aac");
/*
High Efficiency profile is giving trouble for some encodings.
e.g.: pcm_s16le, 8000 Hz, 1 channels, s16, 128 kb/s (video from a mini camera I have)
*/
// cmd.add("-profile:a");
// cmd.add("aac_he");
cmd.add("-cutoff");
cmd.add("18000");
boolean bitRateAdded = false;
Stream audioStream = getStream(CODEC_TYPE_AUDIO);
String audioBitRate = audioStream.getBit_rate();
if (audioBitRate == null || audioBitRate.trim().length() == 0) {
// if it doesn't have, just let FFMPEG do its default thing
bitRateAdded = true;
} else {
try {
long abr = Long.parseLong(audioBitRate);
if (abr
> Settings.getMaxPerChannelAudioBitRate(conversionSetting)
* audioStream.getChannels()) {
bitRateAdded = true;
cmd.add("-b:a");
cmd.add(
Long.toString(
Settings.getMaxPerChannelAudioBitRate(conversionSetting)
* audioStream.getChannels()));
}
} catch (Exception e) {
/* number format */
}
}
if (!bitRateAdded) {
cmd.add("-b:a");
cmd.add(audioBitRate);
}
}
//
// general information about this file
// =================================================================================================================
private int internalGetType() {
Stream videoStream = getStream(CODEC_TYPE_VIDEO);
if (videoStream == null) return TYPE_NO_GOOD;
Stream audioStream = getStream(CODEC_TYPE_AUDIO);
if (audioStream == null) return TYPE_NO_GOOD;
// good video codec and profile
if (VIDEO_CODEC.equals(videoStream.getCodec_name())
&& VIDEO_PROFILE.equals(videoStream.getProfile())) {
// good audio codec
if (AUDIO_CODEC_1.equals(audioStream.getCodec_name())
|| AUDIO_CODEC_2.equals(audioStream.getCodec_name())) {
// good container
String ext =
FilenameUtils.getExtension(conversionSetting.getOriginalVideoFile().getAbsolutePath());
if (MP4.equals(ext)
&& conversionSetting.getFfProbe().getFormat().getFormat_name().contains(MP4)) {
return TYPE_NO_CHANGE;
}
return TYPE_JUST_CHANGE_CONTAINER;
}
return TYPE_CONVERT_ONLY_AUDIO;
}
// same file size uses 2 pass, other qualities uses CRF
return conversionSetting.getQuality() == Settings.QUALITY_SAME_FILE_SIZE
? TYPE_TWO_PASS
: TYPE_CRF;
}