[Live-devel] MPEG-4 in MPEG2-PS

[Leon Woestenberg]

Hello Scott,

Scott Hays wrote:

> Thanks, Leon.  I've gotten it to work more or less myself after  
> hacking the MPEG-2 Program Stream demuxer and parser classes.  I'm  
> not sure I would have had to do any hacking if the MPEG-4 data inside  
> had included the VS and VO headers.  Anyway, after all that work, we  
> decided that we want to remultiplex the MPEG-2 PS stream to an MP4  
> file as it comes from the encoder anyway because MPEG-2 Program  
> Streams don't seem to be very good for anything other than straight  
> playing (they're not really good for efficient "trick-mode" playing).
>
> Thanks for the resp

Ah yes, now you triggered my mind again (without out me having a chance 
to review our own code base); we had our MPEG-4 VES encoder insert VOS 
headers. I find your remark on trick-mode playing a bit ackward, as I 
understand DVD players use MPEG-2 PS as well (not that I know if this is 
efficient or not).

But assuming you are on a good path, this question remains: converting 
the stream to a file, is this done in real-time, or offline before any 
client listens in to the stream?

We are also interested in revisiting this path, but without any proxy or 
repeater inbetween, and I would be glad to learn from other people's 
experiences and work in this area.

Regards,
Leon.