Re: how to use mencoder to record TV program

I am too tired and let's end this thread. Thanks!

There is a long way to go to meet my goal:
1) the output is playable on Linux and Windows
2) the output is two to three megabytes per minutes, frame size is 384x288, my CPU is P3/550

Replacing with "-oac copy" does not work. Audio still can't be heard after some effort. All the switchs used by mencoder still seem foreign to me. Maybe I should read mplayer manual. The learning curve is not smooth. Mplayer is in beta stage, and a/v synchronization problem often occurs.

I am quite happy with helix producer that uses real media format. producer works well in sarge (kernel 2.4) and meet my goal. So why should I try so hard using mplayer?

ByeBye!!

--- On Wed, 11/5/08, Emanoil Kotsev <deloptes@xxxxxxxxx> wrote:

From: Emanoil Kotsev <deloptes@xxxxxxxxx>
Subject: Re: how to use mencoder to record TV program
To: debian-user@xxxxxxxxxxxxxxxx
Date: Wednesday, November 5, 2008, 5:25 AM
Serena Cantor wrote:

It works now though it has many programs! Thanks!!!

After running 2 sudo commands given by you, your
mencoder command can
record. I don't copy sudo output, because 1st sudo
merely says insmod
snd-mixer-oss.ko and snd-pcm-oss.ko and 2nd sudo has
no output at all,
though I have /dev/dsp and /dev/mixer after running 2
sudo. I change
/dev/dsp1 to /dev/dsp in your command, and run it. It
records, and I can
hear TV audio. After about 15 seconds, I press Ctrl+C
to end recording and
play output.avi. I find that TV audio is NOT recorded
(TV video seems OK).
I have to add "-vo x11" to "mplayer
output.avi" to play it. vlc player
can't play output.avi, even video is not shown.

So now you have video but no audio. right? But when you
watch TV you hear
sound.

may be try first instead -oac lame and -lameopts -oac copy.
means replace

'-oac mp3lame -lameopts cbr:br=64'

with

'-oac copy'

I think though that the problem is another one, but try
this first and tell
me if it works.

If it's not working you may also try to add following
to the tv driver line

'forceaudio:immediatemode=1:forcechan=2:audiorate=44100:amode=1:audioid=1:adevice=/dev/dsp'

notice the forceaudio command and the immediatemode. The
immediate mode
(look in man mplayer) is the option that we need I think.
We can try add alsa and replace adevice=/dev/dsp with
adevice=hw=0.0 or
adevice=hw=0.1 I don't remember which was correct for
capturing.

'forceaudio:immediatemode=1:forcechan=2:audiorate=44100:amode=1:audioid=1:alsa:adevice=hw=0.0'

I'm not familiar with vlc, but after you manage to
record your first video
with sound you can play with the different options of
mencoder and try to
find a way that records or converts videos to something vlc
would like.

When I record movie and check the file type with file it
says

file 20081014-201413.avi
20081014-201413.avi: RIFF (little-endian) data, AVI, 720 x
576, 25.00 fps,
video: FFMpeg MPEG-4, audio: MPEG-1 Layer 1 or 2 (stereo,
48000 Hz)

I usually convert them after this with mencoder

file 3SAT_Effesos.avi
3SAT_Effesos.avi: RIFF (little-endian) data, AVI, 720 x
576, 25.00 fps,
video: FFMpeg MPEG-4, audio: MPEG-1 Layer 3 (stereo, 48000
Hz)

When recording I use -oac copy ( means no conversion of
audio stream)
Then I convert with mencoder and do higher compression of
video too.

regards


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