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| ale5000 |
| Posted: Mar 3 2015, 01:19 AM |
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Advanced Member
Group: Members
Posts: 1114
Member No.: 22180
Joined: 30-September 07
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Hi,
I'm just reporting a thread that I have found, they talk about the latest stable version of VirtualDub.
| QUOTE | | vdub 1.10.4 ... The rec.709 options on the "other" dialog don't work at all |
Ref: http://forum.videohelp.com/threads/366469-...-best-for-input
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New VirtualDub forum
VirtualDub AIO (All-in-One installer for VirtualDub and plugins)
Codec Toolbox RS (A tool to read/change merit of codecs and many other things)
Input plugins for VirtualDub / ACM codecs / VFW codecs |
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| shekh |
| Posted: Mar 3 2015, 10:12 AM |
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Advanced Member
Group: Members
Posts: 89
Member No.: 37903
Joined: 21-April 14
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Not sure what is there in the thread, but here are few my observations:
Input colorspace in VD does matter.
I have bt.709 full range mp4 sources - these have colorspace tags. If I feed from my input driver untouched YUV and specify colorspace as bt.709 full range (as reported by ffmpeg), the picture is right.
If I remux the same source to avi with ffmpeg tool, I have to use "alias format" filter which brings missing colorspace info. I have not figured but it seems like avi does not support colorspaces at all. Then the picture is identical.
If I recompress it (full processing from rgb) to x264, and set bt709 and full range options in x264 options dialog, on the output I have identical avi (with quantization like 10 only few pixels differ by 1 bit). I still need to set "alias format" but thats ok for avi.
So, for me everything works well.
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| ale5000 |
| Posted: Mar 3 2015, 01:19 PM |
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Advanced Member
Group: Members
Posts: 1114
Member No.: 22180
Joined: 30-September 07
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I think they talk about converting from rec.601 to rec.709 using VirtualDub itself (not codecs or input plugins).
--------------------
New VirtualDub forum
VirtualDub AIO (All-in-One installer for VirtualDub and plugins)
Codec Toolbox RS (A tool to read/change merit of codecs and many other things)
Input plugins for VirtualDub / ACM codecs / VFW codecs |
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| shekh |
| Posted: Mar 3 2015, 01:25 PM |
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Advanced Member
Group: Members
Posts: 89
Member No.: 37903
Joined: 21-April 14
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In my example VirtualDub is converting from YUV to RGB. At least here I dont see problem. |
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