[MPlayer-users] OT Audio routing in TV capture?

[Jindrich Makovicka]

Bradley Alexander wrote:

>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>I don't think this is an mencoder problem, but based on prior
>experience, I suspect this is the best forum to get a correct answer.
>
>I'm doing tv capture through webvcrplus using mencoder. My machine has a
>WinTV card with an audio out cable plugged into a SoundBlaster Live 5.1
>Platinum card.
>
>The thing thats strange is the way the audio is handled. I originally
>had the tv card line out plugged into the line in on the sound card.
>However, when using mencoder, it records from the mic in on the sound
>card. In the latter case, however, the sound comes out on  the mencoded
>avi seriously overdriven to the point of being distorted. I have tried
>setting the volume in the lameopts portion of the command line, setting 
>the volume= in the -tv options, and setting the level in aumix (it was
>set to zero). How is mencoder grabbing the audio, and how do I manage
>the levels on it?
>  
>
This is not matter of mencoder. It's necessary to set an appropriate 
recording device in the mixer. The recording level is specified with the 
"IGain" slider (when using OSS) or by "Capture" when using ALSA.

>The command line I am using for mencoder is 
>
>mencoder -tv
>on:driver=v4l:width=352:height=240:input=0:device=/dev/video0:norm=NTSC:chanlist=us-cable:volume=20000:channel=#STATION# -ovc lavc -lavcopts vcodec=#FFMPEGCODEC#:vbitrate=#VBITRATE# -oac mp3lame -lameopts cbr:vol=3:br=#ABITRATE# -endpos #TIME# -o "#OUTPUT#"
>
>I have tried the -tv :volume= at 32768 and 20000, and the lameopts vol=
>from 7 down to 3 and it seems to have no effect on the audio levels that
>go into the avi. Can anyone clear me up on this?
>
>Thanks,
>  
>


-- 
Jindrich Makovicka