On Sat, Aug 1, 2020 at 9:52 PM Michael Niedermayer <mich...@niedermayer.cc> wrote: > > On Sat, Aug 01, 2020 at 02:07:26PM +0300, Jan Ekström wrote: > > Only this sub-set of channels actually follows the bit mask order > > in the official 22.2 channel mapping. Additionally, the 5.1 channels > > are there for backwards compatibility with the previous system. > > > > This enables the utilization of 22.2 content until a proper down/up > > matrix is added into swresample. > > --- > > libswresample/rematrix.c | 10 ++++++++++ > > 1 file changed, 10 insertions(+) > > assuming this is true and theres no issue with order > it should be ok >
Thanks for taking a look. Yes, the first 6 channels in 22.2 are mapped the same as 5.1 (back), and the AAC decoder code reorders the coding units accordingly to match specification. This change was then verified using `-channel_layout "5.1"` with ffmpeg.c to just take the first six channels. Jan _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
