Warp wrote:
>   The video data may be mpeg-encoded, but that doesn't mean the surrounding
> container format is mpeg-compliant. (I don't know if it is.)

Interestingly, since MPEG is designed to be streamed, there are 
synchronization codes in the stream, and players are all supposed to 
skip ahead until they find the sync codes. So depending on the container 
format, this might work just fine.

For example, MP3 tags can just be stuck at the front of an MP3 stream, 
because the MP3 tag spec (i.e., ID3) simply prevents the synchronization 
code (0xFFFF, basically) from appearing in the tags. Players look at the 
stream, say "Gee, I must be in the middle of a compressed lump of data 
that I can't decompress without the beginning, I better skip to the next 
sync flag."

-- 
Darren New / San Diego, CA, USA (PST)

Post a reply to this message