Asf>Avs>VDub - Problems

[Nick Less]

HI,

I'm having problems converting asf files to avi. I make an avs script for each asf file, using directshowsource command. The video plays fine in MPC, but when i open it in VDubMod, it plays but here and there certain frames are repeated. To clarify, the frames go something like this: 1,2,3,4,5,4,5,6,7,8,9,8,9,10,11,12,13,12,13,14.... (not that often of course)


What am i doing wrong? The avs only has directshowsource command along with fps, nothing else.

[joseph5]

Try VirtualDubMPEG2.

[LoRd_MuldeR]

HI,

I'm having problems converting asf files to avi. I make an avs script for each asf file, using directshowsource command. The video plays fine in MPC, but when i open it in VDubMod, it plays but here and there certain frames are repeated. To clarify, the frames go something like this: 1,2,3,4,5,4,5,6,7,8,9,8,9,10,11,12,13,12,13,14.... (not that often of course)


What am i doing wrong? The avs only has directshowsource command along with fps, nothing else.

I guess what you experience is that ASF files contain variable framerate (VFR), while most video editors (like VDub) require a constant framerate (CFR) to keep A/V in sync. DirectShowSource will convert VFR -> CFR by skipping/doubling frames. This is a mandatory feature. Nevertheless you should choose a framerate that suits your video in order to avoid unneccesarry frame skips/doubles. Also make sure you use an up-to-date version of Avisynth, there were some improvements to DirectShowSource recently...