So latest news... It seems this USB dongle actually has an EM202 audio processor instead of the Sigmatel reported in the logs. I edited em28xx_audio_setup in em28xx-core.c accordingly and I can now capture audio using the composite interfaces. However joy didn't last really long as I soon realised audio capture didn't worked as soon as I did open the video device at the same time. To summarize: ffmpeg -f v4l2 -i /dev/video1 /tmp/test.avi --> Works ffmpeg -f alsa -i hw:1 /tmp/test/wav --> Works ffmpeg -f v4l2 -i /dev/video1 -f alsa -i hw:1 /tmp/test.avi --> video OK but no Audio Regarding the S-Video that doesn't work I think it's just a matter of card definition in em28xx-cards.c.... I will give a try several combination, nad possibly update the wiki in case I end up to a satisfactory result. In any case I'd be happy to have any insight regarding the problem when audio doesn't work if video device is accessed at the same time. -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html