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Old 15 Dec 2009, 09:05 PM   #1
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Default Best Codec for very high-res video.

Hi Guys,

Please excuse my extreme ignorance. My company has started recording video with a specialist camera which produces streams of Jpegs at 5400x2700, but we’re having trouble finding codecs which can really cut it. Any suggestions?

Also I’ve found that the videos don’t often play on laptops or older PCs. I’ve been told that this is due to restricted ‘texture buffer size’ on the respective graphics cards. Does anyone have any more information on this?

Many thanks in advance.

Stefano
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Old 10 Jan 2010, 03:13 PM   #2
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Stefano,

It looks like you need to convert your JPEG image sequences to a usable HD digital video format before you can do anything. A well recognized format is the YUV file type that keeps the embedded RGB structure uncompressed.

The JPEG file streams your camera produces, is assumed to apply very little or no compression to the resulting images. The JPEG's must be converted to an RGB structure before it can become an AVI file type. YUV can be an AVI or in Quicktime. A standard YUV format that is quite common is an AVI YUV in 4:2:2 or 4:4:4 colour space at 8bit per pixel. Because you have a JPEG source the pixel depth is restricted to 8bpp, unless you have JPEG2000 type files produced. The issue now is to convert your image sequence to a video file for editing and distribution.

There are several image sequence to video converters out there but you have HD frame sizes and HD color space issues to consider. If your final target is 1920x1080 for example, use Adobe After Effects (AE) for resizing and YUV file creation. AE should have some YUV video support, but if not there are several freebee downloads that would work as well. Look for YUV422 8bpp v210 or UVUY codec forms.

Hope this helps. Bill

Cautionary note, when you are dealing with HD files you need high performance computers with RAID 0 drives. Anything slower, have a lot of patience.
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Old 8 Mar 2010, 06:06 PM   #3
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Agree, i'm using Cyberlink PowerDirector8 now. although my computer is fast enough for me most of time, I still need to wait for a while when video editing or movie making. Do I need to upgrade mine PC?
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