Comments

risenwithhim wrote on 5/7/2003, 3:17 PM
Very cool! Thanks for the great product support! Above and beyond!
gold wrote on 5/7/2003, 3:25 PM
Thanks and ditto!
Mr_Plant wrote on 5/7/2003, 4:40 PM
Fantastic!!

Question though..

Is there an update due for Vegas too??
Didn't it also suffer from the clamping issue in 4.0b??
SonyEPM wrote on 5/7/2003, 5:10 PM
An update is coming soon for Vegas but, as I told the Vegas forum earlier, installing the DVDA update (even the demo) fixes this problem everywhere. The MPEG encoder is shared by all SF apps.
bstaley wrote on 5/7/2003, 7:47 PM
After patching DVDA, can I just reburn my existing VIDEO_TS folders, or do I need to let DVDA recreate them?

Thanks.
jetdv wrote on 5/7/2003, 9:14 PM
You'll need to let DVDA recreate them.
Mr_Plant wrote on 5/7/2003, 10:31 PM
Great to hear!
beatnik wrote on 5/7/2003, 10:38 PM
What is "MPEG level clamping" ?
RBartlett wrote on 5/8/2003, 3:56 AM
clamping was a shortening of the dynamic range in the Y/U/V levels held in the data.
A programming oops, which slightly relates to the term "clamping" which suggests an intentional activity. On a graduated scale, this would create a halo or staircase where the source data was in fact smooth as silk.

Clamping is a natural characteristic of all digitisation, this clamping was noticable. 8 data bits per plane (Y,U,V) per pixel have to be treated carefully and this is what has been corrected. AFAIK.
SonyEPM wrote on 5/8/2003, 10:26 AM
The level clamping problem slipped in when we implemented the new MPEG sdk for DVDA 1.0b. Levels were squashed from 0-255 to 16-235. This has been fixed.
way2slo wrote on 5/8/2003, 4:26 PM
Thanks SonicEPM
is the AC-3 audio preview clicks and pops fixed in this update?
bstaley wrote on 5/8/2003, 7:14 PM
Thank you Sonic Foundry. The update fixed my problems with the video stuttering. I appreciate your hard work!
SonyEPM wrote on 5/9/2003, 10:14 AM
Improvements have been made for AC-3 previews*, yes. It might still sound a little odd when doing 5.1>stereo downconverts on the fly, but it does work better in the update.

*computer previews are not exactly what you'll see/hear on a DVD player/TV (you already knew that).
way2slo wrote on 5/9/2003, 10:14 AM
thanks SF
the clicks and pops noise is fixed in 1.0c
cheers
elCutty wrote on 5/9/2003, 11:03 AM
Thank you SoFo, this not only corrected the clamping, but also improved the internal MPEG-2 encoding speed slightly from F=5.1 to now F=4.7. Clamping seems to have taken some CPU performance ;-)

However, using the Satish frameserver and the MC standalone encoder still is much faster (F=2.6) ! Can we expect this to be solved with the V4.0c update?
David Settlemoir wrote on 5/11/2003, 11:07 PM
DVDA 1.0c and my Apex DVD Players are finally playing well together. Thanks SOFO.
bowman01 wrote on 5/12/2003, 7:23 PM
well done SF, keep up the good work!
teknal wrote on 5/12/2003, 11:11 PM
Thanks, discs work on my Apex's now!