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家鹏
5th September 2018, 12:47
Hi everyone， I'm currently working on a project about HEVC SCC, but I can't find SCC video sequences anywhere. could someone please tell me where I can download them?
benwaggoner
5th September 2018, 19:27
Hi everyone， I'm currently working on a project about HEVC SCC, but I can't find SCC video sequences anywhere. could someone please tell me where I can download them?
You can generate them yourself using any screen recording software. But I'm sure that MPEG or VQEG or someone has a set of standard test sequences somewhere.
家鹏
6th September 2018, 05:12
You can generate them yourself using any screen recording software. But I'm sure that MPEG or VQEG or someone has a set of standard test sequences somewhere.

yeah, surely those guys must have standard test sequences, actually I've been looking for them because they're yuv444 format , which looks much sharper than yuv420 format of screen content, and I'm not sure if I record it myself, would it be yuv444 format as well? because that's what I really need right now.
Asmodian
6th September 2018, 18:58
Yes, if you record it at 4:4:4 it will still be 4:4:4. Screen content is RGB which can be converted to yuv444 with virtually no loss by the capturing application.
benwaggoner
8th September 2018, 17:37
Yes, if you record it at 4:4:4 it will still be 4:4:4. Screen content is RGB which can be converted to yuv444 with virtually no loss by the capturing application.
4:2:0 can be not awesome when using sub-pixel rendering like ClearType.
Asmodian
8th September 2018, 19:08
Yes, 4:2:0 is never good for text. :(

Or did you mean 4:4:4? When it is converted back to RGB for display the subpixel rendering would be restored, wouldn't it?
benwaggoner
11th September 2018, 05:18
Yes, 4:2:0 is never good for text. :(
4:2:0 is absolutely fine for black text on a white background!

[/QUOTE]Or did you mean 4:4:4? When it is converted back to RGB for display the subpixel rendering would be restored, wouldn't it?[/QUOTE]
It'd try, but the chroma subsampling is going to mess it up.

Sheesh, just taking a screen recording with ClearType on one screen and playing it back on a different type looks terrible. Subpixel rendering is really dependent on having the exact same subpixel configuration.