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21st February 2007, 12:24 | #1 | Link |
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Join Date: Jun 2004
Posts: 47
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Can't read an odd-resolution WMV properly
I'm having some difficulty with a WMV clip I'm trying to load up in AviSynth. It's encoded using WMVA and has a width of 426 (not divisible by four), but the WMVA decoder forces it to output in YV12, which causes serious problems. Even if I do a color conversion I get a "diagonally slanted" video. I've been trying to figure out a way to force it to load the clip in a different colorspace, but because I'm stuck using DirectShowSource I can't. What are my options?
Last edited by yukichigai; 21st February 2007 at 12:42. |
21st February 2007, 13:28 | #4 | Link |
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Join Date: Jun 2004
Posts: 47
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Just so you get an idea of what I'm talking about
Attached are two images showing what I get when trying to render the file in AviSynth and what I get when just playing the file in MPC. The "diagonal distortion" output happens regardless of if I crop/don't crop, convert to whatever color space, etc.
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22nd February 2007, 04:56 | #7 | Link |
Avisynth Developer
Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 3,167
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Okay, DSS currently assumes YV12 rows are mod 4 aligned in memory like BMP's are.
Looks like either this assumption is wrong. Can you upload a small sample (<10 frames) of this file for testing. |
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