RE: gstreamer and AC-4 audio decoding support

Hi Nicolas,

Thank you very much for your answer.
Ok I will check with FFMPEG  and I’ll be ready when gstreamer will have this type of decoder.

Once more, thank you for your time.

Frederic


De : Nicolas Dufresne <[email protected]>
Envoyé : mardi 22 août 2023 21:19
À : Discussion of the development of and with GStreamer <[email protected]>
Cc : DUCHASSIN Frédéric <[email protected]>
Objet : Re: gstreamer and AC-4 audio decoding support

Hi,

Le mardi 22 août 2023 à 10:34 +0000, DUCHASSIN Frédéric via gstreamer-devel a écrit :
Hello,

I try to gather information about support of dolby AC-4 audio decoding in gstreamer.
I didn’t really find information about the status of such a decoder for this type of audio stream.
Have you got information ? Is it available ?

We currently have mptsdemux and qtdemux (ISOMP4) support but no decoder yet. An AC-4 decoder has been merged into FFMPEG in June this year, and will be part of the next release. Meanwhile, you could prepare the mapping in gstreamer/subprojects/gst-libav/ and send an MR so it ready on time for this FFMPEG release.

note: I don't know AC-4 well enough to tell you if we will need an bitstream parser or not.

regards,
Nicolas