Video Sequence Editor - Bug or Feature

I have a very simple blend with these 4 elements in the VSE -

Scene1 _ 9 Sec AVI (created w/ Blender) _ Scene2 _ TheEnd

  Scene1, Scene2, and TheEnd are each very simple scenes with Text, a camera, and a lamp.  Blender will not animate past the end of the 9 second AVI. IE - with all 4 elements in the sequence editor, the entire output AVI should be 21 seconds. But, the output AVI stops at the end of the 9 second AVI. 

If I move the 9 sec AVI to the third element, then I get Scene1, Scene2, and the 9 sec AVI, but not TheEnd. If i remove the 9 sec AVI from the sequence, then the three scenes render just fine into the new, output AVI.

In the Scene window (F10), i’ve set the last frame to be the total frames in the sequence editor +1.

Any clues?

Sounds like a bug to me.

What O.S? Windows / Linux / Mac ?

What version of Blender? 2.42a ? 2.43rc1 ?

If you’re on Windows, try the latest CVS from here :
http://www.zoo-logique.org/3D.Blender/compilations/win32blender1501.zip

Other OS’s cvs builds are on graphicall.org.

If it does the same thing with a CVS version, the bug tracker is here :

http://projects.blender.org/tracker/?atid=125&group_id=9&func=browse

Mike

Runing Blender 2.42 on Windows XP Home, SP2.

sounds like there’s a codec issue with that 9 second AVI not closing properly.
Fix #1: re-record the 9second avi to a raw uncompressed format (no codec).
Fix #2: record the first two elements to one avi, the last two to another avi, and then in a new scene, append the one avi to the other avi.

I’ve had Blender choke on inputting an XviD avi THAT IT CREATED!!! go figure. i dont use codecs except at the very end to compress the end result.

Roger- thanks for the tips regarding raw-uncompressed, i’m definitely going to pursue that.

I’d already decided to make individual avi’s for the intro and exit, and then just string together the 3 avi’s.

Do you use Virtual Dub for sound? I’ve been waiting a long time for Blender to support/preserve the sound channel in original video.

Thanks again!

i dont use codecs except at the very end to compress the end result.

For what it’s worth, I don’t use movie files at all except at the very end. I find uncompressed PNGs to be the best thing to work with in the meantime. The Sequence Editor handles strips of still images very well—in fact, it handles them more easily than any other software I know of. I render all the stills for a shot into a directory together and then just grab them all into the Sequence Editor. This also makes it possible to abort rendering midway and still use what you’ve rendered, etc.

Umm, is there even such a thing as an uncompressed PNG? I thought all PNGs have compression, albeit lossless compression. Sorry to nitpick… :stuck_out_tongue:

Ah. Good point. You’re right, I think, but there’s an option to set quality at 100 percent, which is what I meant…

But given that PNG compression is supposed to be lossless, I’m not really sure what that means, come to think of it.

Yeah, it’s lossless in the same sense that a ZIP file uses lossless compression. You end up with the exact same information you started with, but in a smaller file size.