DVD Sound but no video

PaulJG wrote on 7/13/2012, 6:11 PM
Video will start and play with no issues, but if you try to skip or fast-forward it either freezes or you only hear the audio. No Picture.

If you hit a chapter mark, it does the same thing.

I tried “two” different burners at different speeds, but the same problem persists.

It plays normal in DVD architect 5.2 before it is put on to disc.

I've tried various settings but this still happens.

In Vegas 11 pro I have rendered it both progressive and interlaced.
I used the default settings accept for the bit rate for which I got from a bit-rate calculator.

The only thing that was changed was the Bit rate is CBR 7,000,000 bps.

The media I've used was Verbatim DL DVD-R. I used this hundreds of times with one or two coasters. I also tried Titan DL DVD+R with the same outcome.

I just went and looked at the VOB files and they look like they try for a split second to play the video, but then its just the audio.

The VOB icons don't show any image accept for the menu VOB.

I’ve uninstalled and the reinstalled Vegas and DVDA with no luck.

I’ve been using DVDA and Vegas since Vegas Pro 3.

Any Ideas?

Comments

musicvid10 wrote on 7/13/2012, 7:06 PM
7Mbps CBR is pretty hot for some players, especially older ones. At that bitrate they just can't seek fast enough. What players have you observed this on?

6Mbps VBR is reliable on most machines, and commercial movies are generally encoded in this range. Try that on a variety of players and see how that works.

CBR is terribly inefficient, because it wastes bitrate in low-motion scenes, and caps the bitrate unnecessarily in high motion scenes.

This may not be the total solution to your problem, but it's a good place to start.
Former user wrote on 7/13/2012, 8:15 PM
This is one place I disagree with Musicvid on. I always use CBR unless I need to squeeze more than an hour on a DVD. I also have never had a problem with a DVD at bitrates 7mbps to 8.

What format is the audio track on your DVD? YOu might possibly be exceeding the total bitrate with your audio track.

Dave T2
musicvid10 wrote on 7/13/2012, 9:35 PM
In deference to your point of view, Dave, all of my dvd players that would not handle 7-8Mbps playback, have since gone to the dumpster or flea market, leaving me with but five.

So the finger may be pointing at the OP's player, rather than just workflow.

I rarely (never?) produce anything under ninety minutes, thus a choice to stick with the more efficient vbr, and also with tight tweaking of minimum and average bitrates, esp. if the content exceeds two hours.
;?)
Former user wrote on 7/14/2012, 9:32 AM
Musicvid,

In your case, VBR is the way to go. My Vegas projects generally run 5 to 20 minutes so I try to max out everything. I figure, I got the bits, by golly, I'm going to use them. ;)

Dave T2
musicvid10 wrote on 7/14/2012, 12:36 PM
If one has brief detail-in-high-motion scenes in their video, using CBR may actually impede temporal resolution and cause more artifacting in those areas.

Most hardware players can handle "bursts" of 9,5Mbps (think football game). Not all of them can handle sustained 8Mbps for a whole program (I actually watched an old CM go up in smoke!)

Of course if these are not sports clips, but interviews, scenics, or slideshows with occasional motion or fades, CBR (at sane bitrates) becomes the preferred strategy because a high peak bitrate is not needed, and maintaining a good minimum bitrate becomes even more important.

For other readers, it's worth mentioning that Dave has been a patient mentor and guide going back a full decade (or more?), and I always benefit from reading his POV.
;?)
PaulJG wrote on 7/15/2012, 7:55 AM
Thanks for the replies. I'm going to try the suggestions and post my results.
PaulJG wrote on 7/19/2012, 2:24 PM
I went back and set everything to the vegas standard dvd template.

I also did not use the pro ac3 encoder, but instead used the studio version without any changes.

Not sure which of thes fixed it.

Not sure why this is the first time i had problems with Vegas.
I would like to use the highest bitrate possible. Mike bit rate calculator said 7megs would work. Oh well.

Anyway, thanks for the support.