Carl Eugen Hoyos <ceho...@rainbow.studorg.tuwien.ac.at> added the comment:
ffmpeg -loglevel fatal (or patching the source) silences the messages. (Looking at the output, I suppose they are errors.) ________________________________________________ FFmpeg issue tracker <iss...@roundup.ffmpeg.org> <https://roundup.ffmpeg.org/issue2045> ________________________________________________