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MasayukiSuda / Mp4Composer-android

This library generate an Mp4 movie using Android MediaCodec API and apply filter, scale, trim, transcode, crop, timeScale, mute and rotate Mp4.
MIT License
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How MediaExtractor switch trackIndex from video to audio? #94

Open andev009 opened 3 years ago

andev009 commented 3 years ago

Before runPipelines, called selectTrack for video and audio, but for VideoComposer and AudioComposer 's stepPipeline , use mediaExtractor.getSampleTrackIndex to get current TrackIndex, the value will from 1 to 0, or from 0 to 1, But I can't find where to switch the TrackIndex, where to switch TrackIndex?