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| Nutella |
 Posted: Sep 11 2002, 01:59 PM |
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Unregistered
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Dear all,
first i'd like to congratulate the VirtualDub and this forum authors 1. for the soft 2. for it to be GPL 3. for the quality of the forum. Voila!
Our problem:
- we used another capture program (sorry did not know VD before  ) to create an avi file - capturix.
- after 12 hours capture the file is 2.3 GB long
- therefore most of viewers, including VirtualDub, cannot open it (invalid AVI file: LIST chunk <4 bytes , due to the fact that they count on 32 bits signed unfortunately)
- Realplayer can play it, but if we go too far in the file it crashes (and it is terribly slow by the way)
Therefore I'd like to be able to open it (and save it after, once fixed) using VirtualDub.
Is there a way, a patch, anything for me to get a proper usable file, would it be truncated to < 2 GB ?
Thanks a lot and regards
Nutella
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| avih |
| Posted: Sep 12 2002, 01:16 AM |
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virtualdub should not have problems openning this file, however, you could try avisynth to frameserve to vdub. |
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| phaeron |
| Posted: Sep 12 2002, 03:44 AM |
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Virtualdub Developer
Group: Administrator
Posts: 7773
Member No.: 61
Joined: 30-July 02
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This most likely means you recorded your AVI in compatibility mode (F5) -- this causes Video for Windows itself to write the AVI file, and thus trash it past 2GB. You can probably get the AVI to load by patching the length field from 00 00 00 00 to FF FF FF 7F using the hex editor; it should be at 00002008 in the file, but the RIFF tree will tell you the truth.
Incidentally, VirtualDub does not use signed math for chunk lengths -- it correctly recognizes chunks between 2GB and 4GB.
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