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| zcream |
| Posted: Dec 4 2013, 01:52 PM |
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Member
Group: Members
Posts: 17
Member No.: 22447
Joined: 17-November 07
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I am going to use a USB3 MVC in 12-bit 4:2:2 RAW mode.
It has a DirectShow driver.
The JPEG spec support 12-bit 4:2:2 JPEG files.
Does the MJPEG codec inside Virtualdub support writing 4:2:2 12-bit MJPEG files ?
I think VD is still 8-bit in RGB colorspace. However, I am hoping that the DirectShow driver can supply 10-bit 4:2:2
or even 12-bit 4:2:2 and then this can be captured within VD.
If I turn on Direct Stream Copy - perhaps the resolution and data is preserved. |
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| raffriff42 |
| Posted: Dec 4 2013, 10:56 PM |
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Advanced Member
Group: Members
Posts: 384
Member No.: 35081
Joined: 25-June 12
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Virtualdub is limited to 8-bit, as you can confirm by looking at all the available pixel formats under Video, Color Depth.
I can open deep color video (tested ProRes 10-bit and FFV1 10-, 12- & 16-bit) using the FFInput plugin, but the video is converted (truncated, I think) to 8 bits. Direct stream copy does not work.
I gather VfW itself is limited to 8 bits max, so there's not much chance of an upgrade. |
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| raffriff42 |
| Posted: Dec 10 2013, 08:54 PM |
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Advanced Member
Group: Members
Posts: 384
Member No.: 35081
Joined: 25-June 12
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I stand corrected.
EDIT - more information:| QUOTE (phaeron @ Feb 12 2010, 04:25 AM) | ... support is fairly limited. What VirtualDub's v210 support enables is:
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[*] Selecting v210 as a pass-through format between codecs.
[*] Displaying 10-bit/channel video, if Direct3D display mode is enabled with "high precision" on. In this case, the 30-bit data is dithered down to 24-bit.
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Processing is still limited to 8-bits/channel -- any filtering options will force a downconversion. |
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| phaeron |
| Posted: Dec 28 2013, 09:54 PM |
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Virtualdub Developer
Group: Administrator
Posts: 7773
Member No.: 61
Joined: 30-July 02
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Correct, VirtualDub itself doesn't support processing 10-bit or 12-bit per component data.
However, it can pass that data onto a codec without downconverting it, so if you have a codec that can take 12 bpc data directly, VirtualDub can pipe it through.
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