On 2024-02-17 05:31 pm, Kieran Kunhya wrote:
On Sat, 17 Feb 2024, 11:46 Gyan Doshi,<ffm...@gyani.pro> wrote:
Issue:
Patch: avcodec/s302m: enable non-PCM decoding
URL:
https://patchwork.ffmpeg.org/project/ffmpeg/patch/20240127103854.9971-1-ffm...@gyani.pro/
The issue needing resolution is whether the patch should be added to the
existing s302m decoder or should that decoder
be removed and all old and new patched features inlined into the mpeg-ts
demuxer.
Additional comments:
Dolby E can exist in any PCM container (wav, MP4). S302M just happens to be
a tricky one.
Whilst s302m multiple substreams I haven't seen, Dolby E streams internally
contain multiple programs, often 5.1 and a 2.0 downmix.
That is downstream of the Dolby-E decoder and user will have to use a
filter like channelsplit to bifurcate
those channels irrespective of where the s302m code resides.
There is a 3x3 matrix of flavours between coded Dolby E and the carriage
PCM (16-bit, 20-bit, 24-bit).
Have you seen a larger non-PCM word size inside a smaller AES3 word?
Regards,
Gyan
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