Help: New Rendered .AVI video lags

Kwak wrote on 2/20/2005, 11:09 AM
Hello,

I had finished rendering the edited video (1 min. 10 seconds) via .AVI. I used the Video Rendering Quality Best since I added many photos in addition to the video itself.

I used NTSC default size. The other options are at a default setting.

When I watch the rendered .avi (burnt to a CDR) via Windows Media Player, the first section 'lags.'
The video that was burnt into a CDR does not play smooth.


After waisting 3 cd, I come to seek your professional help. :)

Comments

Spot|DSE wrote on 2/20/2005, 11:16 AM
If you are trying to play the avi from a CD, I'd expect lags. Not too many CD players can playback an .avi file without stuttering, especially at 720 x 480. You'll do better rendering the avi to a compressed format like WMV to distribute on CD.
Kwak wrote on 2/20/2005, 11:18 AM
Sorry, the title is a little misleading. Here is more information:


I burnt the rendered video into a blank CD. It is in both .AVI and .WMV format.

The .wmv video plays fine but not the .avi. There is a presentation today and I prefer the .AVI to be displayed for quality purposes.

The problem so far, the .AVI 'lags' real bad , freezes and plays and freezes and play after every second.



I had burnt in two different CDR brands and both CD has the same problem. I tested out the videos on 2 pc and a mac, the same problem. I rerendered it and the same problem.

The rendered video (.avi) in the hard drive plays fine.
Kwak wrote on 2/20/2005, 11:24 AM
You are right, that makes more sense, finally. The .wmv video works perfectly.


How do one achieve the equivalent quality of a .wmv to an .avi video?
I'm using the default template to render a .WMV and selected "Best." Or can I tweak the custom template setting to achieve an equivalent quality to a .AVI?
John_Cline wrote on 2/20/2005, 11:52 AM
DV .AVI files have a fixed bitrate of around 3.8 megabytes per second, in order to play the file, it will require a CDROM capable of a sustained minimum transfer rate of "25x" (In CDROM terms, 1x is 150kbytes/sec.) Very few CDROM's, even those rated at higher than 25x, can stream data at that rate without glitches. Besides, the 720x480 .AVI file will have the wrong aspect ratio when viewed on a computer monitor anyway.

My suggestion is to make a high-bitrate 640x480 .WMV file instead. In Vegas, go to "Render As" and select "Windows Media Video v9" as the file type and select the "3 mbps Video" template. If you want even higher quality, you could get into the custom settings and set the audio to 128kbit 44k stereo and the video bitrate to "4 M" instead of "3 M"

John