After buildroot ffmpeg compiled with insdev alsa, the ffmpeg cannot detect alsa capturing card.
example command : " ffmpeg -f alsa -i hw(card # ) capture.wav" , it has alsa input/output error even if arecord is working fine.

When i try to capture spdif rx with a arecord tool, the S16_LE has problem but only S24_LE worked. Anyone have patch for this? test method is as follows. " arecord -D hw:x,x -f S16_LE -r 48000 -c 2 test.wav " . the recorded wav file has not 16bits. and sample rate is wrong.