[avi] Can an unopenable chunk of Lagarith be recovered?

[Redsandro]

I was rendering a piece of video for my project, which took a long time. My computer crashed, and the standard tricks do not seem to work.



Now I know there's a big chunk of rendered frames that is just sitting there. Is there any way I can get them back? I know the file is Lagarith, 25fps, 48K audio or whatever else I need to know because I set up the template.

If I can fix this, it will save me a couple of hours on a deadline.

And yes I am a fool for rendering directly to a video file. Always render a sequence. I was trying to save time.

[qyot27]

Which 'standard tricks', per chance?  Remuxing to a different container, trying to get VDub to rebuild the index and do a Direct Stream Copy/recode to a new file?  Using graphedit to shunt to a new file?  I know I'm missing other possibilities...

Generally I wouldn't export (or heck, even import) a video sequence with Lagarith.  I've had too many problems with it in pretty much every use except archiving, so I'd simply take the space hit and use HuffYUV instead (with ffvhuff serving YV12 duty).  I've never had issues with its output being corrupted unless something was set wrong in the NLE.  And unlike Lagarith, at least HuffYUV can possibly be recovered using a vanilla build of ffmpeg if something goes wrong (there's a patch for decoding Lagarith, and IIRC it's still only restricted to YV12 - I compiled a build of it from the git fork a couple months back and it performed well for me, but I didn't do extensive testing with it).

[Redsandro]

Ah I missed your reply, I forgot to set mail notification for this topic.

I meant Standard tricks as all avi fix tools out there, kind of what I hinted with the screenshot. And ofcourse the rebuilding remuxing and stuff didn't begin to work because the file was simply unopenable.

I just rerendered the whole thing.

BTW, I don't know when you formed your opinion about Lagarith, but I've never had problems in the current version. A lot of bugs have been fixed.

Anyway, lesson leaned.