Re: [MPlayer-dev-eng] lavcac3enc broken?

On 27 Mar 2023, at 17:37, eatdirt <eatdirt@protonmail.com> wrote:

Hi there, I am a long term user of mplayer, and my "custom" usage is to reencode audio streams to ac3 to feed my "old" amplifier.

Since version 1.5, it seems that the audio chain having:

-af lavcac3enc 1:x:y

is broken as soon as the stream is not ac3 (it used to work with any stream pre-version 1.5).

Here the errors popping out, for instance from an eac3 audio channel:

[ac3_fixed @ 0x7f72fd553760]Specified sample format s16p is invalid or not supported

Seems there was a FFmpeg change making the ac3 encoder only support 32-bit input. So the lavcac3enc code would need to be changed to take that instead of 16-bit inputs. It should not be hard, but might take a bit of time to do.