Transcoding mpg2 to mpg2.. is this possible?

[merrypig]

Hi,

I've read around the forums and I think this is possible but noone else seems to have tried exactly what I'm thinking of.

I'd like to have my mpg2 files (from a pvr250) with embedded closed captioning transcoded ... into another mpg2 file but with burnt in captions in the image so that they will display when viewed by the mediamvp.

I'm not sure if the transcoding mechanisms get used if the source file is already an mpg2 file - so I'm not clear how to even go about doing this.

Ultimately, I want to make the transcode process consist of

read mpg2 -> decode and render video + captions to frame buffer -> recode to mpg2 -> stream to mediamvp.

Obviously the bitrate will need to be fairly high to handle the sharp edges of the captioning text but I can live with that.

So how would I start? can I do this with ffdshow or ffmpeg? or do I need to write a custom transcoder application - and if so how do I get mediamvp with or without gbpvr to use it? (I'm aware that gbpvr might not be part of this solution, but I'm happy to entertain the gbpvr framework if it works =)

Thanks in advance
MP.

[HtV]

You probably better look here: www.videohelp.com. they are very helpful overthere and have a vast amount of info.

[merrypig]

Hmm, probably my bad, but that's not quite what I'm asking. I know how to do transcoding in general and what resources are out there.

What I'm not clear about is how that works with the media mvp and/or gbpvr. As I understand it, when playing mpg files, the mediamvp software and presumably gbpvr will stream those files as they are. When using other file types I believe it uses either the hauppauge transcode exe file or something else.

What I'm wondering is whether the .mpg files can be flagged as needed transcoding when played with the mediamvp; and where I can find details of the way that transcode works within this environment.

(Ie if I write my own transcode app to do what I want, should the output be an mpg file, a datastream or... etc)

thanks

[sub]

As I understand it, when playing mpg files, the mediamvp software and presumably gbpvr will stream those files as they are. When using other file types I believe it uses either the hauppauge transcode exe file or something else.

Correct.

What I'm wondering is whether the .mpg files can be flagged as needed transcoding when played with the mediamvp.

No, they cant.