Jerky playback when I compress mpeg

[StewartTurner]

Hello.

I am sure that I have managed this before without problems but can't manage to work it out this time.
I've got a 120 minute video rendered to mpg at abou 9100 kbps. I would like to reduce the bitrate so that I can fit it onto a single layer DVD so I used UVS10+ to convert to 6500kbps. Unfortunately the resulting video is jerky, stuttering all the way through (audio is fine but goes out of sync). I retained all other details, making sure field order was fine etc.

It's a simple thing to do and I'm sure I've done it successfully before - can anyone advise what might be going wrong this time?

Thanks,
Stewart.

[Trevor Andrew]

Hi Stewart

I assume the quality of the original is ok.
I would also assume that the settings have changed after render., Probably the field order?

I would use the Make Movie Manager to create a template.
Use the Add function and select your original file as the ¡¥file path¡¦

Then edit the template changing only the Bit rate to 6000kbps

Now start a new project, insert the original video clip

Share Create Video File ¡V selecting your template.

You will now render using the same settings except for the bit rate.

I have some notes here on Movie Manager

http://uk.geocities.com/trevor.andrew@b ... anager.htm

[2Dogs]

An alternative approach you might consider would be to produce DVD folders from the 9100kbps mpeg2 file, and then use DVD Shrink to make them fit a single layer DVD.

Some posters claim this results in a better quality final DVD than you would get from re-encoding to a lower bitrate in VS. I've been meaning to do some tests to check this out myself.

[StewartTurner]

Thanks very much for the advice - I used some of the advise and started a completely new project for re-rendering. It seemed to work fine this time. I'm not sure exactly what went wrong before but all seems fine now.

Thanks again,
Stewart