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Re: How to capture composite video

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On Fri, 28 May 2021 13:45:35 -0400
Dan Ritter <dsr@randomstring.org> wrote:

> Charlie Gibbs wrote: 
> > [copy of posting to comp.os.linux.misc]
> > 
> > References: <s7pfr30196f@news1.newsguy.com>
> > <atk9nh-fs1.ln1@aretha.foo>
> > 
> > On 2021-05-17, Peter 'Shaggy' Haywood <phaywood@alphalink.com.au>
> > wrote: 
> > > mencoder tv:// -tv \
> > > driver=4vl2:input=1:norm=pal:width=720:height=576:fps=25 \
> > > -endpos 1:30:00 -ovc lavc -oac copy -lavcopts vcodec=mpeg4 \
> > > -o filename.avi  
> > 
> > I finally found the time to do some more experimenting.  The example
> > above is a good starting point.  I found that I can watch VHS tapes
> > (or whatever else is plugged into the composite video input) on my
> > machine with the following command:
> > 
> > mplayer tv:// -tv
> > driver=v4l2:input=1:norm=NTSC-M:width=720:height=480
> > 
> >  Tuner cap: STEREO LANG1 LANG2
> >  Tuner rxs: MONO
> >  Capabilities:  video capture  VBI capture device  tuner  read/write
> > streaming
> >  inputs: 0 = Television; 1 = Composite1; 2 = S-Video;
> >  Current input: 1
> >  Current format: UYVY
> > v4l2: current audio mode is : MONO
> > Audio: no sound
> > 
> > Note the "Audio: no sound" line.  I still have to figure that one
> > out to get beyond silent movies.  Any hints?  
> 
> Yes: composite video doesn't carry audio at all. Your VCR has
> either mono or stereo RCA audio output jacks, and you can plug
> them into a stereo RCA-> 1/8" stereo headphone plug or adapter
> cable to bring it into your sound card. Possibly your video
> capture card has a separate jack for that?

Typically red and white phono connectors are left and right audio,
yellow is composite video. The S-Video connector is normally a four-pin
mini-DIN connector, and also doesn't carry audio.
> 
> Input 0 is probably RF-frequency NTSC with a tuner to select
> channels. That's low-quality, but includes audio.
> 
> Input 2 is S-Video, which is the best of the available video
> connections if your VCR supports it. (I have one that does... if
> it still powers up.)

-- 
Joe

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Re: How to capture composite video Charlie Gibbs <cgibbs@surfnaked.ca> - 2021-05-28 19:30 +0200
  Re: How to capture composite video Dan Ritter <dsr@randomstring.org> - 2021-05-28 19:50 +0200
    Re: How to capture composite video Joe <joe@jretrading.com> - 2021-05-28 23:40 +0200
  Re: How to capture composite video deloptes <deloptes@gmail.com> - 2021-05-28 19:40 +0200

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