Converting DivX to DivX in Virtual Dub

[OctoChops]

I have some DivX anime episodes that i want to rencode. The reason i want to rencode them is because AVICodec tells me the FPS is like 119fps. And this causes many probs with my DivX DVD Player.

I have tried converting DivX to DivX in VDub only to fail miserably. I am using DivX 5.1 codec and ahve tried DivX 3. But i always get terrible results. Like incredibly choppy video that has a bunch of pauses, or video thats really blocky. I dont know what i am doing wrong.

IF any of you guys have done such a conversion then please share.

thanx 8)

[Craig Tucker]

Perhaps you are using too low a bitrate. What framerate does vdub tell you the file is.

[incognito]

I've had some problems with divx 5.1 -- it seems to lack multi-threading support that earlier versions have-- when I installed it my encoding rate went from ~40 fps to ~22fps. re-installing 5.0.5 fixed a lot of things for me.

As was suggested above, for decent results you need a decent bit rate-- even for anime. I'd shoot for at least 45MB per half hour of video.

[OctoChops]

well i was shooting for about 180 mb per half hour

[zedolfblack]

I had a DivX movie which only had one keyframe for the entire movie...
The movie played fine but it was impossible to fast-forward or rewind while playing it - due to the movie only having one single keyframe.

I used Virtual Dub to re-encode the movie.
Used the DivX 5.0.2 codec to re-encode to.
And in Virtual Dub i selected the DivX codec's '1 Pass Quality Based' setting.
I set it to 100% assuming that it would then retain as much of the original DivX movie's quality as possible.
I then of course ensured that the keyframe interval was ok - used the default 300 frames setting.

Virtual Dub successfully re-encoded the movie with standard number of keyframes and the re-encoded movie played fine with fast-forward and rewind working now.

I don't think much quality was lost in the re-encoding process - but it was just a re-encode, no filters applied.

Martin.

[OctoChops]

is it possible to have the DivX 5.0 codec and 5.1 installed at the same time?