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Bitrate for Video on CD

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Kathie Brown
Bitrate for Video on CD
on Jan 23, 2009 at 4:43:29 pm

Occasionally clients request video on CD. We have a client that wants 2 Windows Media videos on a CD along with some .PDFs. What is the optimal bitrate for video on CD? We tried a High Quality 720x480 setting in Sorenson that plays back well on most computers, but stutters on an older PC. Thanks, Kathie



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Daniel Low
Re: Bitrate for Video on CD
on Jan 23, 2009 at 5:29:42 pm

Speed KiB/s Mb/s
1x 150 1.2288
2x 300 2.4576
4x 600 4.9152
8x 1200 9.8304
10x 1500 12.2880
12x 1800 14.7456
20x 3000 24.5760
32x 4800 39.3216
36x 5400 44.2368
40x 6000 49.1520
48x 7200 58.9824
50x 7500 61.4400
52x 7800 63.8976

It may have been the frame size rather than the datarate that made the old PC stutter.

Obviously if you copy the files from the CD to the hard drive, datarate is not so much an issue.

http://en.wikipedia.org/wiki/CD-ROM



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Kathie Brown
Re: Bitrate for Video on CD
on Jan 23, 2009 at 7:14:33 pm

Thanks for the reply. We have decided to go with lower bit rate (originally 4171 kbps to 1545 kbps for saftey. The larger file size worked well on most computers, but stuttered on a 9 year old computer.



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Rich Rubasch
Re: Bitrate for Video on CD
on Jan 25, 2009 at 1:08:06 am

Good call. 4000kbps is WAY high for most PC playback reliability. We stick to no more than 1700kbps and a 640 x 480 frame size is a more standard size for computer playback. Also deinterlace the fields so the decompressor doesn't have to worry about that.

Rich Rubasch
Tilt Media



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Kathie Brown
Re: Bitrate for Video on CD
on Jan 25, 2009 at 2:49:02 am

Thanks for sharing the specs you use for video on CD. We did do the de-interlace--although the client insisted on the larger 720 size--but it played back well on the 9-year old "test" computer. Thanks, Kathie



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