chromaprint: Add libav option to prefer it to ffmpeg

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
libquicktime: Add libav option to prefer it to ffmpeg

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
mediastreamer: Add libav option to prefer it to ffmpeg

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>