mencoder sound quality - TV recording

[Shlomo Solomon]

Can anyone help? I didn't get any replies to this.

On Sun, 3 Jan 2016 09:13:52 +0200
Shlomo Solomon <shlomo at the-solomons.net> wrote:

> I watch TV on a capture card using either the TVtime GUI or the
> following from the CLI: 
> mplayer tv:// -tv
> driver=v4l2:norm=PAL:input=2:amode=1:width=720:height=576:outfmt=yv12:device=/dev/video0
> 
> 
> To record from the same card I use mencoder. My problem is that the
> audio quality of the recording is not great - hard to describe the
> problem but the sound is just not "clean" - sort of an echo. I've
> tried many different combinations of options. Here's the best I've
> been able to record (but still not great):
> 
> mencoder tv:// -tv
> driver=v4l2:device=/dev/video0:norm=PAL:input=2:width=720:height=576:audiorate=48000:outfmt=yv12:alsa=1:adevice=hw.1
> -oac copy -ovc lavc -noskip  -vf scale=720:576 -o /tmp/tst.avi
> 
> 
> 2 "strange" added bits of info.
> - part of the mplayer output to the terminal is "Audio: no sound", but
>   there *IS* good quality sound. 
> - the mencoder command *DOES* output good sound during the recording
>   process, but the audio in the recorded file is not great. 
> 
> Here's part of the terminal output from mencoder - I suspect it's
> related to my problem.
> 
> audiocodec: framecopy (format=1 chans=2 rate=48000 bits=16 B/s=192000
> sample-4) Forcing audio preload to 0, max pts correction to 0.
> 
> 
> 
> 
> 



-- 
Shlomo Solomon
http://the-solomons.net
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