Problems with re-encoding DivX 3.11 content

[Laryllan]

I can´t recompress DivX 3.11 content with VirtualDub. The program crashes at the end of second pass.
Does anyone experience similar problems?
The source file is DivX 3.11 SBC, VirtualDub runs in full processing mode, no audio using DivX 5.02 (2-pass).

Would appreciate any help.

[DJ Bobo]

Well, I never experienced such a problem, but I would have a quite annoying solution: transcode your DivX3 file to an intermediate format like MJPEG, then use that intermediate file to convert to DivX5.

But I don't understand why you would transcode to DivX5, notice that recompressing to DivX5 (or any other lossy compression format) will give you worse quality, no matter what!

[Laryllan]

Damn, you´re right!
I´ll try...
(I want to reencode because of size. I don´t want to archive 350mb for just 40 minutes of film.)

[Prosper]

At a decent res. that is an acceptable size.

[Laryllan]

It didn´t work. :(
I transcoded to HuffYUV (newest version) and then to DivX 5.02. There should be no Problems...
The size is 352x240 (dividable by 16).
But everytime the same error: At the end of the encoding process VirtualDub shuts down an leaves an .avi with no keyframes at all. I´ll keep trying and let you know of my results...

[N_F]

When you're opening the movie in VDub, first activate "Popup extended open options" and then activate "Re-derive keyframe flags". Try encoding again.

Does it work?

[Laryllan]

I tried the extended options, with no effect. VirtualDub still crashed.
But I tried something else: I disabeled the quality options in the DivX 5.02 decoder one by one.

Now it works (with ALL decoder/quality options disabeled) and as far as I can tell it seems to be a bug in DivX 5.02 decoder.

Damn them!
(Surely I´m very fast in blaming someone :devil: )

[Swede]

Could it be the no-audio-bug in vDub? It's only supposed to affect Avisynth files but you could try adding the audio...

Symptoms: VirtualDub crashes at the end of a save when attempting to process video from Avisynth.
Cause: The AVI2 output handler crashes if the dwSampleSize value of the video stream is non-zero and there is no audio stream present. Avisynth is one of the few applications that uses a non-zero value for video streams.
Workaround: Either attach audio (any audio will work, no matter how short), or use the "save compatible AVI" option.

[Laryllan]

I don´t think so cause at first I didn´t disable audio. Its in VBR (lame) and VDub can´t handle it, so I copied & encoded the vidoestream on it´s own.
Was my first thought but didn´t cause my problem.