avformat_query_codec() unexpected results

[csab6597]

using the code

const AVOutputFormat* ofmt = av_guess_format("MP4", nullptr, nullptr);
int supported = avformat_query_codec(ofmt, AV_CODEC_ID_VORBIS, FF_COMPLIANCE_STRICT);

I find the returned value of 1 surprising, which would be indicating support. Actually the result is always 1 no matter which compliance level is provided. And testing a few other codecs I found the same situation. For example AV_CODEC_AV1 also always checks out as beeing supported, which I expected not to be at least for more strict compliance levels??

Edit: There seem to be some more incosistencies as for example the MP3 container does not seem to have any supported codecs, not even AV_CODEC_ID_MP3?