[FFmpeg-devel] MP4A-LATM support?
Fri Nov 13 12:47:31 CET 2009
On Fri, Nov 13, 2009 at 12:33:40PM +0100, Luca Abeni wrote:
> 5) how can the muxer know if the bitstream is "regular AAC" or LATM?
> I think we need a "fake" codec ID (CODEC_ID_LATM, or something like
> this) for identifying LATM streams. When the AAC stream is transformed
> in LATM (or vice-versa) by the bitstream filter, the codec ID is changed
> from CODEC_ID_AAC to CODEC_ID_LATM (or vice-versa).
To my knowledge the way this currently works (e.g. with
h264_mp4toannexb_bsf) is that the muxer just assumes the user will have
remembered to insert the right filter.
Obviously that leaves room for improvement...
More information about the ffmpeg-devel