[MPlayer-users] Cannot record audio from tv tuner.

[Alexander Strasser]

Hi Marc!

On 2014-08-12 13:39 -0700, Marc MERLIN wrote:
> On Tue, Aug 12, 2014 at 09:53:21AM -0700, Danny Uy wrote:
> > I recently had to restart the process of recording from my TV tuner when I
> > received several boxes of old VHS tapes which I have started to convert
> > into digital format. I am running on an Ubuntu desktop. The first step I
> > did was to make sure that the TV card is able to output video and audio and
> > that you can view and listen to the output.
> > 
> > I was able to accomplish this and then started recording. I recorded the
> > video but there was no audio. I had to play around with alsamixer to
> > finally get the correct setting and I was able to record audio and video.
> > However, I still cannot connect the audio output of the TV card to my
> > line-in. I ended up not using the audio patch cable and recorded directly
> > from the line-out.
> > 
> > I use ffmpeg for recording. The following basic command works for me:
> > 
> > ffmpeg -i v4l2 -f /dev/video0 -i alsa -f default output.avi
> > 
> > Hope this helps!
> 
> I can start over with a brand new cli with all different command line
> options and spend a long time figuring them out :)
> 
> For now, I got as far as
> legolas:~$ ffmpeg -i v4l2 -f /dev/video1 -i alsa -f default output.avi
> ffmpeg version 2.3.1 Copyright (c) 2000-2014 the FFmpeg developers
>   built on Jul 31 2014 07:10:38 with gcc 4.9 (Debian 4.9.1-3)
>   configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-m
>  ips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libiec61883 --enable-libfdk-aac --enable-vaapi --enable-libx265 --enable-libdc1394 --disable-altivec --disable-armv5te --disable-armv6 --shlibdir=/usr/lib/x86_64-linux-gnu
>   libavutil      52. 92.100 / 52. 92.100
>   libavcodec     55. 69.100 / 55. 69.100
>   libavformat    55. 48.100 / 55. 48.100
>   libavdevice    55. 13.102 / 55. 13.102
>   libavfilter     4. 11.100 /  4. 11.100
>   libavresample   1.  3.  0 /  1.  3.  0
>   libswscale      2.  6.100 /  2.  6.100
>   libswresample   0. 19.100 /  0. 19.100
>   libpostproc    52.  3.100 / 52.  3.100
> v4l2: No such file or directory
> 
> Am I missing special packages/libraries for it to work?

  At least all options are messed up: just flip all -i and -f
around and try again.  E.g. the "format" is -f v4l2 and the
input name is -i /dev/video1 same for audio stuff on that
command line.

  Alexander
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