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| Unofficial VirtualDub Support Forums > Codec Discussion > X264vfw Cannot Decode This File |
| Posted by: ale5000 Dec 3 2011, 12:23 AM |
| Sample file (7.21 MB): http://www.multiupload.com/LVCIHARL72 x264vfw cannot decode this file, ffdshow-tryout can do it. I have tried with x264vfw_34_2008bm_29021 and x264vfw.2106kMod.x86 VirtualDub say "Couldn't locate decompressor for format 'avc1 (unknown)". |
| Posted by: dloneranger Dec 3 2011, 09:22 AM |
| Its got a strange header - some of the header information is missing/incorrect eg fccHandler is null (4 bytes of 0) instead of avc1 The directshow and ffmpeg plugins will open it though |
| Posted by: BugMaster Dec 4 2011, 08:36 PM |
| It is rejected because it was marked as 853x480 but odd width or height are incorrect (there is no rules how to correctly interpret them) for 4:2:0 (I420/YV12). And so x264vfw simply rejects to decode video with odd width or height. |
| Posted by: ale5000 Dec 4 2011, 09:12 PM |
| I see a green vertical line at the right of the video when playing in MPC-HC using ffdshow-tryout and in VLC. Maybe they add 1 pixel line to make it even. |
| Posted by: dloneranger Dec 4 2011, 09:29 PM | ||||
That's what green lines at the borders usually mean yeah Strange that avi's been a published spec for soooo long and yet they're still being so badly created (the actual files themselves, lets not even talk about production qualities, sigh)
When I saw the badly formed header, I didn't even bother checking the sizes as well |