[linux-dvb] Re: tech questions 2 - non-mpeg content and fps conversion

[Arpi <arpi@thot.banki.hu>]

Hi,

> Arpi writes:
>  > Is it possible to pass non-mpeg content (PCM audio and YUV 4:2:0/4:2:2
>  > video) to the card?
> 
> Only PCM audio and currently I only support it in PCM PES packets.
You mean PCM packets in 0x1BD streams, with additinal 0x0180 PCM header?

> Transmitting uncompressed YUV needs too much bandwidth.
Hmm. Is 15MB/sec too much? Some PCI videocards supports YUV and it's
very fast...

>  > I need it for AC3 audio and Divx/mpeg4 video support.
>  > 
>  > It isn't a big problem to re-encode content to mpeg 1/2 frames, but it
>  > eats some CPU, so I want to avoid doing this if possible.
>  > 
>  > My another problem is the FPS conversion.
>  > Can the DVB card do 25<->30 fps conversion (to play back 29.97/30 fps
>  > content on PAL TV) itself, or I have to do the conversion by software
>  > (dropping away / duplicate some B frames) ?
> 
> No, the card cannot do this. It also cannot create PAL60 signals. 
> 
> The EM8400 based MPEG2 decoder cards can do this.
> 
Ok, thanks.
I'll do that in software then...

Btw, does the card uses PTS values for something?
(except A-V sync if both A and V sterams are present)


A'rpi / Astral & ESP-team

--
mailto:arpi@thot.banki.hu
http://esp-team.scene.hu


-- 
Info:
To unsubscribe send a mail to listar@linuxtv.org with "unsubscribe linux-dvb" as subject.