smaller frame rate = more space on VCD??

[MAIOF]

if i lower the frame rate from like 30fps to 15, would i have more space on a CD ???

[EP10]

I could be wrong, but NTSC should be 30fps to be able to play on DVD

[VidGuy]

No - remember the definition of VCD = 1150 kbps - the bits per second are constant regardless of the framerate. It is true that you should get a better quality picture with fewer frames, but that's all. As EP10 indicated, I highly doubt that 15 fps would play on your DVD player (however, 23.976 should - that's why 24 fps VCDs look better than 30 fps VCDs usually).

[wildcatfan]

here is what to do....take your avi and convert to 15fps (14.99 for ntsc actually) then set your encoder to 29.97 fps and encode the mpeg. it will be 15 fps internally but 30 externally so it will play. this will save bits however because half of the frames will have no motion and get extremely high compression.

Michael

[VidGuy]

That will not look smooth at all. You're better off creating an XVCD where you lower the bitrate, and maybe increase the GOP length than to drop to 15 fps. However, it is true you'll get high compression, but once again -

damn, the fact that it's 1150 kbits/second - doesn't matter WHAT you're encoding - you get 1150 kbits/second. The ONLY way to fit more time on the CD is to drop the bitrate.
Physics is Physics. You could drop it to 1 frame per second, and it would still only fit 74 minute on a single CD if you used 1150 Kbits/second.

[wildcatfan]

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On 2001-08-14 08:52:54, VidGuy wrote:
That will not look smooth at all. You're better off creating an XVCD where you lower the bitrate, and maybe increase the GOP length than to drop to 15 fps. However, it is true you'll get high compression, but once again -

damn, the fact that it's 1150 kbits/second - doesn't matter WHAT you're encoding - you get 1150 kbits/second. The ONLY way to fit more time on the CD is to drop the bitrate.
Physics is Physics. You could drop it to 1 frame per second, and it would still only fit 74 minute on a single CD if you used 1150 Kbits/second.
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Wellllll, (if that was directed at me)I wasn't trying to say you could get more time on the cd, I was saying you COULD get a higher quality in the individual frames (definitely) OR that you could use a lower bitrate (<1150)and maintain the SAME quality AND get more time on the cd that way.

Michael