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Compression for DVD-Rom

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Nathan McClendon
Compression for DVD-Rom
on Jan 5, 2009 at 8:11:39 pm

I apologize if this topic has been covered before, I searched the forum and could not find it. Ok here goes:

I have about 8 hours worth of videos (live filming and software screen shots in the same video) that need to go onto a DVD-ROM (not cd-rom because of the amount of video). This is software training that will be delivered through an adobe director movie. I am assuming that h.264 will be the best format for this. I did some tests and h.264 looked good. My question is what will be the best compression setting or compression suggestions for this project?

Current workflow: Export From FCP to Compressor.

Compressor Settings: h.264, Frame rate same as source, height and width same as source, key frame every 30 frames, frame reordering, multi-pass, data rate restrict to 2400kbits/sec, optimized for cd/dvd-rom, aac 48kHz 128kbps, fast start-compressed header, and deinterlace (better -motion adaptive).

The size is good and the quality is acceptable. One of my concerns is the data rate. Is this too much for dvd-rom?

Thanks in advance.

Nathan


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Daniel Low
Re: Compression for DVD-Rom
on Jan 6, 2009 at 4:32:45 pm

A 1X DVD drive speed can transfer approximately 1.4MBps (1.36Kbits/s) - You should be able to get good (not great) looking SD H.264 at that datarate, but most people should have faster drives than 1x.

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Nathan McClendon
Re: Compression for DVD-Rom
on Jan 6, 2009 at 7:04:58 pm

Just to make sure I under stand correctly; a 2x drive would have a transfer rate of 2.8Mbps...sustained?

Thanks



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Daniel Low
Re: Compression for DVD-Rom
on Jan 6, 2009 at 11:02:43 pm

2.7Mb/s, but I wouldn't say you could 'sustain' that reliably. 2.2 maybe.

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Please post back saying what solved your problem. It could help others, and saying 'thanks' is free!


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Nathan McClendon
Re: Compression for DVD-Rom
on Jan 7, 2009 at 9:44:05 pm

Thats good to know. Thanks for the info!


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