Home > Archive > Compression > February 2006 > Uniform intra_quantiser_matrix in MPEG 2?
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
Uniform intra_quantiser_matrix in MPEG 2?
|
|
| Pete Fraser 2006-02-19, 9:55 pm |
| I've been looking at some video from DVD recorders,
and I'm  . Some of the recordings seem to
use a non_intra_quantiser_matrix of all 8s, and an
intra_quantiser_matrix of all 16s.
I'm puzzled. The non_intra makes some sense, but the
intra seems like it would be quite inefficient, not to
mention illegal in having a first value that is not 8.
What am I missing?
Thanks
| |
| Pete Fraser 2006-02-22, 6:55 pm |
| "Pete Fraser" <pfraser@covad.net> wrote in message
news:11vi56ns844ho70@news.supernews.com...
> I've been looking at some video from DVD recorders,
> and I'm . Some of the recordings seem to
> use a non_intra_quantiser_matrix of all 8s, and an
> intra_quantiser_matrix of all 16s.
Well, it looks like my tool (Elecard StreamEye) was giving
me bogus results. If I look at the .vob with a binary editor
everything looks reasonable.
|
|
|
|
|