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Compression Suggestions
Hello,
Unfortunately, or fortunately, I have been put on a video project that I need some help on.
I am using a mac running OSX 10.6.4 with a quad core 2.66 and 8gb ram.
Using FCP 7.0.2, compressor 3.5.2 and DVDSP 4.2.2. All of which I believe are the latest versions.
The video footage was taken off an XDCAM 50mbs tape, and using the XDCAM software, ripped and wrapped in quicktime (.mov) MPEG-2.
Video footage is 720×486, 16:9, 29.97 fps.
I hope that gets everything out of the way…
Here is my issue. I have 4 volumes (66mins, 60mins, 44mins, 51mins) that I need on either 2 or 3 DVDs. I cannot split up the volumes in half, they are complete projects and need to stay intact. I have the ability to use DVD-9 and DVD-5s. How would you break this project up? would you put 2 volumes on a dvd-9 so you have 2 dvds?
also: How would you change the compressor settings from the standard “DVD: Best Quality 90 minutes” to get the best quality because it is only compressing 60 minutes? I know that increasing the bitrate above 7ish will give DVD players issues. What else would you change?
Is there a formula you guys use to help you figure this stuff out (based on video length)? any suggestions would be very helpful!
Thanks a lot.
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4 Replies
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If you used dual-layer you could fit all four on one disc if you kept the compression to around 6 Mb/sec. That would be 221 minutes or 13260 seconds x 6 Mb (6000kb/sec) = roughly 7.9GB.
There’s a DVD bitrate calculator on the videohelp.com site here that will give you a range of acceptable bit-rates you can use to fit your content on various disc sizes:
https://www.videohelp.com/calc.htm
Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com
Read our blog http://www.videomi.com/blog -
Chris,
Thanks for your response.
Any quick words on setting up the DVD layer break?
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No…not really…from what I’ve read there is usually a pause of from a half-second to several seconds as the laser transitions from the top layer to the bottom layer. I don’t know of any way to predict or reliably know where that will occur on the disc…so the only solution there would be to NOT use dual-layer and put two volumes each on a DVD-5 disc.
Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com
Read our blog http://www.videomi.com/blog -
I think ideally you try to find a natural break point so it’s not as noticeable. It would happen on the nearest I frame. At the end of a fade to black or on a still if there are any might be options.
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