Hi Carl, Thank you for the help! I now compiled ffmpeg from sources (btw, the online doc was great) but I get the same error:
$ ffmpeg -f alsa -i hw:1,0 -t 30 out.wav ffmpeg version N-89254-g37c57df Copyright (c) 2000-2017 the FFmpeg developers built with gcc 7 (Debian 7.2.0-14) configuration: --prefix=/home/marco/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/marco/ffmpeg_build/include --extra-ldflags=-L/home/marco/ffmpeg_build/ lib --extra-libs='-lpthread -lm' --bindir=/home/marco/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enabl e-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree libavutil 56. 3.100 / 56. 3.100 libavcodec 58. 3.105 / 58. 3.105 libavformat 58. 2.102 / 58. 2.102 libavdevice 58. 0.100 / 58. 0.100 libavfilter 7. 5.100 / 7. 5.100 libswscale 5. 0.101 / 5. 0.101 libswresample 3. 0.101 / 3. 0.101 libpostproc 55. 0.100 / 55. 0.100 [alsa @ 0x55ac278ba740] cannot set ALSA buffer size (Invalid argument) hw:1,0: Input/output error I tried to compile ffmpeg 0.6.7 from GitHub, but without success; it gives the error: libavcodec/vaapi_mpeg4.c:89:73: error: implicit declaration of function ‘ff_h263_get_gob_height’; did you mean ‘ff_h261_encode_init’? Probably, I'm missing some old dependency? Thanks, Marco On Sun, Nov 26, 2017 at 4:17 AM, Carl Eugen Hoyos <[email protected]> wrote: > 2017-11-26 13:06 GMT+01:00 Marco Paolieri <[email protected]>: >> Hello! >> >> I am trying to capture audio from an ATI Wonder 600 USB adapter using >> >> ffmpeg -f alsa -ac 2 -ar 48000 -i hw:1,0 -t 10 a.wav >> >> but I receive the error >> >> [alsa @ 0x555d7c2850a0] cannot set ALSA buffer size (Invalid argument) >> hw:1,0: Input/output error > > It appears that this call and check are there for many years. > > Feel free to test a very old version of FFmpeg like 0.6 to > find out if this is a regression. > >> using >> - ffmpeg version 3.3.4-2+b3 > > And please test current vanilla FFmpeg git head, nothing > else is supported here. > > Carl Eugen > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
