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Codecs for a very very large video format?

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Joakim DahlqvistCodecs for a very very large video format?
by on May 2, 2011 at 1:04:13 pm

I am trying to output a very large video for a test of a massive mediawall.

Is there anyone who could recommend the ideal codec or work flow?

The size is 3840 x 4320 pixels at 30fps.

h264 seems to be limited to 2000x2000. Animation codec generates a file that is 1Gb per second...

I am aware that this is a bit insane. Any suggestions are welcome.

Thanks in advance for any help.

/J


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Dave LaRondeRe: Codecs for a very very large video format?
by on May 2, 2011 at 3:48:11 pm

If you're using multiple screens for the video wall, you shouldn't render it in a single piece. You CAN prerender, then use the resulting file to create separate files, positioning the large file for each smaller screen, which should help.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Matthew WoodsRe: Codecs for a very very large video format?
by on May 2, 2011 at 5:41:18 pm

I agree with David, you shoudn't expect to be able to play a file that size, but I do pre-render multi screen movies like this prior to cutting up. I usually use Photojpeg at 95% quality. This codec jpeg compresses each frame, so it works well with any frame size. As long as you don't need to chromakey something on it, it makes a good semifinal pre-render codec. This seems to get me adequate quality while saving a lot of file size over lossless codecs.

-Matt

Need a quick break from motion graphics?
Try my game Constellation at:
http://www.paperdragongames.com


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Joakim DahlqvistRe: Codecs for a very very large video format?
by on May 2, 2011 at 8:56:40 pm

Thanks for your responses

We will not use a single video for the final output. The AV engineers have asked for one full resolution piece of 10 seconds just for their testing purposes. I was trying to make it for them but was only able to get insane output sizes, perhaps because it is insane to begin with.

/J


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Dave LaRondeRe: Codecs for a very very large video format?
by on May 2, 2011 at 9:16:36 pm

[Joakim Dahlqvist] "The AV engineers have asked for one full resolution piece of 10 seconds just for their testing purposes."

I would give them a quicktime movie in the Photo JPEG codec set to 95% quality.

And I also say let the engineers deal with the insane file size; they will probably reconsider their request very quickly.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Walter SoykaRe: Codecs for a very very large video format?
by on May 2, 2011 at 9:43:12 pm

Building separate pipelines for tests and production is very risky! Engineering tests should cover the entire production workflow -- otherwise, how can you confirm that your outputs and compression settings are correct?

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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Walter SoykaRe: Codecs for a very very large video format?
by on May 2, 2011 at 6:17:48 pm

For workflows like this, you must start at the display and move baclwards.

You deliver whatever the playback system requires. As the othes mentioned, that may involve pre-splitting your output.

You should check in with the AV vendor responsible for the wall.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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Walter SoykaRe: Codecs for a very very large video format?
by on May 2, 2011 at 11:48:17 pm

By the way, for my own internal pre-renders and proxies, I almost always use image sequences for large video walls. Since the render times are so much higher on larger comps, using image sequences in your workflow will let you easily resume failed renders, or re-render only small portions of longer comps as necessary. A large, fast RAID will help.

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events


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