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2reverb
11-07-2012, 03:38 PM
Could someone tell me the difference between recording mpeg2 compatibility and mpeg2 high profile. I don't understand what I am reading on Wiki. Thanks!
Bob

SBowie
11-07-2012, 03:39 PM
I'm not really sure what wiki you're looking at (link?0, but the manual explains the basic differences and reasons for using one or the other.

2reverb
11-07-2012, 03:57 PM
http://en.wikipedia.org/wiki/Mpeg2

Not that much of an engineer.
"TriCaster’s ‘double-rate’ MPEG-2 format for records is comprised entirely of ‘I-frames’, resulting in excellent image quality. Two variants are provided; your choice principally affects color sampling applied to captured clips:"
So one records 4:2:0 and the other records 4:2:2 colorspace. Guess I'll do a side by side to compare image quality.

SBowie
11-07-2012, 04:56 PM
In part, it depends on what post production use you intend to make of the files. Many applications don't support High Profile MPEG-2.

ted
11-11-2012, 09:12 PM
Andrew Cross was kind enough to create the "High Quality" version for some specific needs we have.
The High Quality profile works in SE, but so so in Premier Pro CS 6 for us and I am told not well with FCP.
The main reason we'll record High Quality 4:2:2 is when we are recording green screen that will be chroma keyed in post. It gives better color sampling for a better key.
If you are recording a Virtual Set production or non-keyed program, the regular .mpeg is usually fine.

Dominicc
08-02-2013, 01:00 PM
What are the bit rates on these two profiles? They don't exist in the manual at all.
MPEG 2 and MPEG 2 High Profile

Dominicc
08-02-2013, 01:06 PM
Actually it would be helpful to have the list of all the bit rates for each type of record function in the TriCasters. ijs

kanep
08-02-2013, 02:49 PM
Hopefully this helps, details for TriCaster 40v2, 455, 855, 8000 systems recording formats.

- Quicktime 4:2:2 = VBR 100Mb/s, 4:2:2 color space, matches resolution of your source/output, MPEG-2 style compression, supports timecode, tagged to appear like XDCAM media
- Quicktime 4:2:0 = VBR 100Mb/s, 4:2:0 color space, matches resolution of your source/output, MPEG-2 style compression, supports timecode.

- MPEG-2 4:2:2 = VBR 100Mb/s, 4:2:2 color space, matches resolution of your source/output, supports timecode, was the MPEG-2 High Profile option in previous TC models.
- MPEG-2 4:2:0 = VBR 100Mb/s, 4:2:0 color space, matches resolution of your source/output, supports timecode, was the MPEG-2 Compatible option in previous TC models.

- AVI = VBR 100Mb/s, 4:2:2 color space, matches resolution of your source/output, SpeedHQ codec

- H.264 High Quality = 20Mb/s, matches resolution of your source/output, limited to one channel of recording
- H.264 Web Quality = 2Mb/s, always SD resolution recording, limited to one channel of recording