diff options
Diffstat (limited to 'libhb/muxmp4.c')
| -rw-r--r-- | libhb/muxmp4.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/libhb/muxmp4.c b/libhb/muxmp4.c index 284c4ce6e..cfaf11ebb 100644 --- a/libhb/muxmp4.c +++ b/libhb/muxmp4.c @@ -137,6 +137,10 @@ static int MP4Init( hb_mux_object_t * m ) hb_mux_data_t * mux_data; int i; u_int16_t language_code; + + /* Flags for enabling/disabling tracks in an MP4. */ + typedef enum { TRACK_DISABLED = 0x0, TRACK_ENABLED = 0x1, TRACK_IN_MOVIE = 0x2, TRACK_IN_PREVIEW = 0x4, TRACK_IN_POSTER = 0x8} track_header_flags; + /* Create an empty mp4 file */ m->file = MP4Create( job->file, MP4_DETAILS_ERROR, 0 ); @@ -295,12 +299,23 @@ static int MP4Init( hb_mux_object_t * m ) /* Set the correct number of channels for this track */ reserved2[9] = (u_int8_t)HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(audio->amixdown); MP4SetTrackBytesProperty(m->file, mux_data->track, "mdia.minf.stbl.stsd.mp4a.reserved2", reserved2, sizeof(reserved2)); - - /* store a reference to the first audio track, - so we can use it to feed the chapter text track's sample rate */ - if (i == 0) { - firstAudioTrack = mux_data->track; - } + + /* store a reference to the first audio track, + so we can use it to feed the chapter text track's sample rate */ + if (i == 0) { + firstAudioTrack = mux_data->track; + + /* Enable the first audio track */ + MP4SetTrackIntegerProperty(m->file, mux_data->track, "tkhd.flags", (TRACK_ENABLED | TRACK_IN_MOVIE)); + } + + else + /* Disable the other audio tracks so QuickTime doesn't play + them all at once. */ + { + MP4SetTrackIntegerProperty(m->file, mux_data->track, "tkhd.flags", (TRACK_DISABLED | TRACK_IN_MOVIE)); + hb_log("Disabled extra audio track %i", mux_data->track-1); + } } |