You did not mention if DVDA was re encoding the video portion. That would do it.

JJK

Whenever I burn a DVD DVDA seems to indicate the MPEG-2 needs re-rendering.

It dis this when it worked fine. I can't perceive any differences in my actions yet it still doesn't work.

Just about to burn the lower bit rate version so should have an answer on that in around 30 mins

Bit-rate reduced to 7340 and judder still there:-(
Does anyone have any clues as to how far I would have to lower it?

I don't think lowering the bitrate will help. Double check your project settings for Vegas and DVDA. Make sure they are in PAL (and lower field first).

Also, use a seperate dvd burning ap to see how it works. Nero might not be a bad idea.
That would rule out DVDA as a problem if it was still juddery.

I very much doubt this is a bit rate problem, if it is it'll tend to get worse towards the end of the DVD. Just be careful of one trap, 9.8MBits per second is the maximum bitrate for the combined stream, that's all the video and audio streams combined, not just the video stream. That's why it's 8 MBits by default to leave enough headroom for the audio but some DVD players have trouble even lower than 9 MBits / second.

Also another buring application shouldn't make any difference either unless you're also using the burining app to do the encoding.

If it is a field order problem you should be able to see it playing out the avi source file. You will not see it on an internal monitor as that's showing you merged fields, you need to look at it on an external monitor.

The fact that you don't see it on the still tends to indicate that's what it is. If that's the problem change the project settings to upper field but still encode to mpeg using lower field. Setting both of them to upper will give you two lots of reversal and you'll be back to square one!

Sorry farss, I may have mislead you. I do get it on the stills. Actually, these stills have been taken from the time and added to the DVD in a Music compilation.

I'll try your last sugestion as well and let you knwo the outcome.

Thanks

You may have got this problem out of the blue and without doing anything wrong.

Recently, I had occasion to convert a number of old Hi8 clips to MPEG. I did this by capturing them after passing the Hi8 camera's output through a Canon XM2, which acted as the A/D convertor. I then edited the resulting AVIs in Vegas and rendered them from the timeline. There were two clips that rendered in the wrong frame order and gave the strobing effect you appear to have seen too. As always, this is most evident with objects in high motion, especially across the frame.

As far as I'm aware, the settings (for the MPEG2 encoding) were the same throughout and were in fact the standard template settings for PAL MPEGs destined for DVD Architect. Subsequent recapture and rendering proved successful..!

It may be that the rather poor quality of the original tapes led to some problem in the capture. I don't know. It might be something else, something in the encoder slipping a cog now and then. All very mysterious and impossible to replicate 'on demand'.

-Pete



SonicEPM: I did try to send you details of this but the address you gave me caused problems, with my messages and enclosures returned each time. Sorry. :)

I did what was suggested and set the project properties to Upper Field First and rendered, burnt and... no chnage. Still the Judder remains.

Any other ideas out there before I go mad.

Thanks

Take the AVI file immediately after capture and put it through DVDA and let
DVDA recode the AVI to MPG. Do not put the file on the Vegas timeline and do not edit the file. Burn the disc and see what it looks like . It should be perfect. If the file has the same judder you have something wrong with the tape or your equipment. If the file is perfect then there are many things to think about. First one is if you are using CBR at 8 megs it will give you Judder especially if the captured material was from film converted to tape. DV is a piece of cake.
Next capture directly through your firewire from the recorder or camera and do not record the camera or other format tape to an intermediate tape. Something happens to the timing pulses during this intermediate tape recording (with film converted to tape, 24fps to 27.970fps) . This is my therory which probably is totally wrong but it did happen to me. I must add that I still don't know why it happens but the but some people will clean up the video in Virtual Dub before they throw it on the Vegas timeline. If your shooting digital its almost impossible to screw it up unless something is wrong with the camera or tape or vcr. Its only the analog that has these judder problems but onsome occasions the CBR bitrate will cause even slow moving objects to jump at a rate of 15 fps. If the problem perists I would look also for something that is running in the background that was not running before or even an IRQ or the 1394 sharring with something else. Also if you have installed an older version of forge or acid with the older MPEG2 codec that might have blasted the Vegas codec. It almost sounds like your using the microsoft codec instead of the Main Concept codec. Anyway, godd luck and when you find the problem let us know what it was.

JJK

Thanks.

I am having major problems alround.

As it is a PAL DV capture through Firewire to V4 and I have edited, rendered and burned to DVD with DVDA without problems and the resultant DVD was perfect I am not sure of anything anymore.

If you have seen my posts regarding the constant crashes when I attempt to connect the miniDV camera to the PC for either PTT or capture (it has just been happening 5 times while I try to view on external monitor) I am thinking perhaps I have more serious hard/software problems. It all seemed to start when I added a Silicon Image SiI 0680 ATA/133 Controller so that I could use both DVD and DVD +-RW in the same PC. I think my best move forward at this time is to remove the ATA card, give up the CD re-writer and just have the DVD and DVD+=RW. Then I'll re-install windows 2000, et al. A day or two's work but I think it may help.

Does anyone have any better suggestions?

You just have to keep trying things or nothing will be accomplished. Removal of the ATA card would be a good start as they sometimes cause a lot of problems especially communicating with the motherboard CMOS on the boot. DMA settings too.

JJK