Playback stops in DVD

Angel01 wrote on 10/19/2002, 6:27 AM

Hi, I am having this problem: I capture DV from my camera and render to mpeg pal for DVD with VV3. Then i burn it to DVD with my Philips DVDRW228.
Well the playback stops every once in a while. Its a one second pause every 3 or 4 minutes. I experience pixelation artifacs too. The video looks blocky for one second or two.
The thing is: this doesnt happen if i make a backup of a commercial DVD, just for testing purposes.
I've read about the interlace thing, but im not sure if that is the problem.
Any help will be greaty appreciate it.

Comments

JJKizak wrote on 10/19/2002, 10:54 AM

This problem is usually associated with the DVD mpeg2 codec speed set too
high (9.8 megs max). If the data rate is set to 8.0 megs CBR in the mpeg2 codec
some set top players cannot handle the data rate then freeze for a second,
pixelate, recover and continue playing. Don't know how the Phillips operates but
if you cannot set the data rate you are screwed. Usually a data rate of 8.0 megs
VBR will perform adaquately. The commercial discs will always work perfectly.
Check back in this forum for in depth discussions on data rates. Also check the
Sonic Solutions (DVD writing software) forums.

James J. Kizak

Angel01 wrote on 10/19/2002, 11:56 AM

Thanks for your help. I have already tried to reduce de data rate as low as 4 megs, to no avail. In any case Ill keep trying different settings of the codec.
Thanks again.

kkolbo wrote on 10/19/2002, 1:09 PM

For test purposes, make sure that you use the Stock Template, unmodified. It has been set to be VERY compatible. It will only take a small change to that without knowing what you are doing to mmake it fail.

K

Angel01 wrote on 10/19/2002, 3:21 PM

Yes, i've done that, but somehow the resulting file when converted to vob and/or burned to DVD has a bit rate so high that will make the player to stop every once in a while.
Thanks

PeterMac wrote on 10/20/2002, 6:01 AM

Does this 'stoppage' always occur at the same point(s) in your movie, or is the effect random?
Does changing the bitrate have *any* impact at all; for instance, does it move the sticking point to somewhere else?
Incidentally, how do you know the bitrate is too high? Are you using a bitrate analyzer, or are you simply supposing?

The problem with sticking in PAL footage encoded from the Vegas timeline is extremely rare - but not, alas, unknown. It appears to occur when certain hardware and footage-type factors combine. There are potential solutions to this - and I'm sure if SonicEPM is perusing this thread, he may be able to offer guidance.

-Pete

kkolbo wrote on 10/20/2002, 10:43 AM

BTW, What DVD Authoring program are you using?
It should be catching the problem before it goes to disk.

SonyEPM wrote on 10/21/2002, 8:46 AM

Angel01: Check your email.

Everybody else- we are aware of this issue and are testing a fix now.

PDB wrote on 10/22/2002, 3:53 AM

Are you playing the dvd back on your computer or standalone player?? If it is on a standalone player there are many possible explanations to your problem (I experienced exactly the same problem as you mention). Two possible solutions are:

1) make sure your authoring programme isnt re-encoding the mpeg2 file
2) Try other media brands. I have tried 3 different dvd+rw brands: sony and hp playback fine; memorex causes all sorts of problems on my sony standalone. Each standalone brand/model behaves differently (check vcdhelp.com for more info)

If you're experimenting the problem playing back on computer, I haven't got a clue what the issue can be!!!

Angel01 wrote on 10/28/2002, 11:27 AM

Thank you all for your help.
After a lot of experimentation, I still dont have a complete answer.
Could be related to my stand alone player, althougt it is supposed to be +R/+RW 100% compatible (Philips DVD761). I had the same problem with my DVD-Rom, until i updated the firmware.
Maybe the bottom line is that until a year from now, no stand alone player is 100% compatible until they print it in the docs.
In any case I will try SF betas, to see if they solve the problem.
Thanks again, and best regards.