mpegts.c: sample_fmts is deprecated, -Werror in CMakeLists.txt

[summrum]

Hi, I have just tried to build picam using ffmpeg.git on a Raspberry Pi 4 running 64 bit Raspberry Pi OS (up to date as of today, 12/01/2025). Ran in to the following error:

/home/summrum/picam/mpegts/mpegts.c: In function ‘is_sample_fmt_supported’: 
/home/summrum/picam/mpegts/mpegts.c:46:14: error: ‘sample_fmts’ is deprecated [-Werror=deprecated-declarations]
   46 |   const enum AVSampleFormat *p = codec->sample_fmts;
      |              ^~~~~~~~~~~~~~
compilation terminated due to -Wfatal-errors.
cc1: all warnings being treated as errors

Removing -Werror from CMakeLists.txt allows the build to proceed, so I have a working picam executable.

I had a look at the ffmpeg documentation to try and update the mpegts.c file and it looks like avcodec_get_supported_config() is the replacement for getting codec capabilities; I tried modifying using the information given on that link and this section of the avcodec source but I don't understand C/C++ and every variation I have tried thus far leads to failed compilation.

Thank you.