Android：在视频中选择音轨

Question

I've got some .mp4 videos that have multiple audio tracks, each for a specific language.

I found this question on stackoverflow but the user didn't post his solution.

I was wondering how to select one audio track from the .mp4 video and play it without hearing the other audio tracks at the same time?

I have no restraints as if it needs to be a VideoView or an Activity based on an Intent.ACTION_VIEW.

Answer 1

Use MediaPlayer.selectTrack(TrackIndex);

to get track index use

findTrackIndexFor(TrackInfo.MEDIA_TRACK_TYPE_AUDIO, MediaPlayer.getTrackInfo());

private int findTrackIndexFor(int mediaTrackType, TrackInfo[] trackInfo) {
        int index = -1;
        for (int i = 0; i < trackInfo.length; i++) {
            if (trackInfo[i].getTrackType() == mediaTrackType) {

                return i;
            }
        }
        return index;
    }

can you please post that multi-track video files for me.