[Mplayer-dvb] video newbie wants to help, advice needed

[mocm at convergence.de]

Alexander Neundorf writes:
 > Hi,
 > 
 > I'm very new to this video stuff (not programming), but now I have a lot of 
 > time to work on it :-)
 > 
 > Well, basically I want to record data from my analog tv card and feed it 
 > somehow into the dvb card, so that it will be displayed on the tv with the 
 > nice translucent OSD.
 > 
 > As far as I am until now, mencoder is able to record video from a v4l device, 
 > but not audio yet.
 > This is the first point where I'd like to work.
 > Can somebody give me some hints how to start, what to consider ?

Try ffmpeg, I also heard that mp1e is supposed to turn out fast
results. 

 > 
 > Then, when this is done, AFAIK it has to be encoded into a MPEG2 PES, and 
 > this can be fed into the Siemens dvb card.
 > 

It can be MPEG1 system stream or MPEG2 program stream and also just a
MPEG1 or MPEG2 PES without SCR information.


 > This would have to happen in realtime. 
 > I have a 1 GHz Athlon here.
 > I think it should be possible to do it if the encoder simply produces only 
 > I-frames without motion prediction, differential coding, etc.
 > And since the dvb card supports lpcm, the audio data wouldn't have to be 
 > converted, would it ?
 > 

The Athlon should be fast enough, but it always depends on the
resolution you are going for.

Marcus