Converting VFR to CFR (immortal topic), both avi_tc and AVIsynth fail.

[pyton357ru]

A necessary declaration. I did a search on forums and I intend to do it again. Some solutions were tried. If I failed to find some already-discussed topic -- I'm really sorry.

There is a batch of .mkv files, which i intend to turn into a batch of dvd's. Unfortunately, these files were coded in VFR.

The first attempt by means of avi_tc brought no result. Every time avi_tc failed with following error message

CLI Output:
tc2cfr v1.5 by tritical.
Descernable number of framrates: 340 (min = 0.352589 fps).
v1 timecode file type detected.
Invalid frame range detected in v1 timecode file (0-1535).

I tried both mkv2vfr and MkvExtractGui to get timecode. Tried to convert timecodes between formats. No result besides this message.

I faced this problem before, failed to solve it, and reverted to Avisynth.

I made a following script

DirectShowSource("filename.mkv", fps=25, convertfps=true)

Last time I needed to deal with VFR it worked.
But this time no application plays file with it -- VirtualDub says that "no video stream found" and MediaPlayerClassic starts to play sound with no video.

File is 100% working. Both playing and extracting of video go on normally. Tried to load it into Windows Media Player -- except funny attempt to play two soundtrack at once -- it is played.


SUPER says following about file's video part

Codec : XviD
Codec/Family : MPEG-4
Codec/Info : XviD project

So -- does anyone have any insights on any way to get these files into obedience?

Thanks beforehand!!

[Soopafresh]

Read the ffmpegsource thread http://forum.doom9.org/showthread.php?t=127037

Supposed to work pretty well with VFR sources. Never tried it on MKV files, but other have.

[Alex_ander]

AviSynth is the right way to do it. It is also necessary to make DirectShow filters work properly:
a) provide playback of that file type;
b) make them loaded at loading the script into VDub and your encoder

I had recently a similar problem with one mkv file and one particular rm file. Playback worked in MPC (FFDShow+Haali Media Splitter and RealAlternative installed) and files opened in Vdub but not in AVSP and CCE. After I installed latest FFDShow, it started to pop up a window offering to load itself at opening the script in either application and this solved the problem. The convertfps parameter in DirectShowSource will take care of VFR.

[pyton357ru]

Thanks for your help guys!

A night of frantic experiments resulted in... third solution.

If troublesome MKV is re-muxed without sound or subtitles -- it is played fine.

[sweetfreek]

DirectShowSource("filename.mkv", fps=25, convertfps=true)

Tried this code, but Synth says that the "convertfps" argument doesn't exist for "directshowsource".

(I'm using AviSynth v2.55, VirtualDubMod, and CCCP)



I made an error about which version of Synth I was using. Now corrected.

[sweetfreek]

http://nyaochi.sakura.ne.jp/xoops/modules/mydownloads/index.php

It seems that a post on doom9 (http://forum.doom9.org/showthread.php?s=&threadid=90938) had my answer.

[Placio74]

...I'm using AviSynth v2.55 ...

Why You use old 2.5.5?
Please download latest stable Avisynth 2.5.7 (eventually unstable 2.5.8 ).