Hi, I was wondering if there is a way to set a timed text stream as forced in an mp4 container. I notice that the quick time spec has a flag "All Samples Are Forced". I've tested converting a file with a Forced and Unforced subtitle stream into an mp4 file. The subtitles are placed into the container as expected and I can select and view them both. However when I look inside the mp4 file at the following box
MovieBox -> TrackBox -> MediaBox -> MediaInformationBox -> SampleTableBox -> SampleDescriptionBox -> SampleEntry(tx3g) the 32bit unsigned int denoting display flags is always 0. Is there a way to manually set this flag or a switch that will tell ffmpeg the stream is forced and thus set the flag automatically? Many Thanks _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user