I'm having some trouble with Virtual Dub Mod again, ack!

[darkzero297]

Okay so I have a .mkv file and when I try to load it in Virtual Dub Mod I get this error:

"Couldn't locate decompressor for format 'yyyy' (unknown).
VirtualDub requires a Video for Windows (VFW) compatible codec to decompress video. DirectShow codecs, such as those used by Windows Media Player, are not suitable. Only 'Direct stream copy' is available for this video."

I have been informed elsewhere that this error is caused by the Combined Community Codec Pack (CCCP) that I have downloaded to play videos. Can someone tell me how to fix this please?

[Soopafresh]

Think of MKV as an envelope that you put audio and video files into. Vdubmod is rejecting the video, which is probably an h264 encoded file. To make it work, go into FFdshow decoders from your start menu and turn on h264 playback. It might take some clicking around, but it is in there.

[darkzero297]

I see. I'll try that later then. Thank you.

[darkzero297]

Jeez, that didn't work. Right now I am using mkvextractgui to do this but it says that the video format is this: (V_MPEG4/ISO/AVC) How can I convert this?

[darkzero297]

Okay, my video file has a variable framerate and so when I am able to extract it it ends up being almost one minute longer than normal. Can someone tell me how to fix this? I used avc2avi to turn the .h264 into an .avi in case that matters at all.

[killerhex]

i use megui automated 2-pass option just tweak some settings or use the defaul i use bitrates from 800kbps-2mbps

and mux in the original audio

[darkzero297]

Will this program help with my video's variable frame rate?

[darkzero297]

Hmm... when I try using the program it teels me to get .net framework. I have no idea what this is, could someone tell me what it is and where to download it?

[guns1inger]

Microsoft downloads. Does it need .net 1 or 2 ?

[darkzero297]

It needs net 2. What do I download. Right now I'm on this page:

http://msdn2.microsoft.com/en-us/netframework/aa731542.aspx

There are a so many links and different versions, which do I choose. I have Windows XP BTW.

[guns1inger]

http://www.microsoft.com/downloads/details.aspx?familyid=0856eacb-4362-4b0d-8edd-aab15...displaylang=en

[darkzero297]

How do I use this program? When I try to open a file it wants an .avs file. What is this and how do I get it?

[yoda313]

I believe that is for avisynth. Never really used it so I can't help you much there. But that is the program for avs files from what I know.

[darkzero297]

Okay, thanks for that at least. Can someone give me a walkthrough for how to deal with avisynth files. I am absolutely clueless about this and need someone to thoroughly describe it to me.

[manono]

http://www.avisynth.org.ru/docs/english/

[darkzero297]

All of that? Could someone give me an example of the avisynth script that I need. I tried doing it myself and I was actually able to open the file in virtual dub mod but it said it would take 49 days to encode it. D:

I obviously messed up here. I have an .mkv (.h264) with a vfr and I want to convert it into an AVI (preferably with XviD codec) What kind of script do I write?

[guns1inger]

DirectShowSource("{replace this bit with full path and filename}", false).Assumefps(23.976)

The Assumefps() will force a fixed framerate without altering any frames, so if you have true vfr then you may find strange speed changes. You may wish to drop this statement, or replace it with a Convertfps() instead. Set the actual framerate to match what the playback rate should be.

[darkzero297]

Okay, thanks. I'll try this tomorrow. Just to be clear, when using megui, am I using the original .mkv file or am I using the .h264 file that I extracted?

[guns1inger]

I avoid mkv because there seem to be no real rules for them, and doing anything but watching them on the PC seems to be a pain in the arse. If you are using the script, I would load the avi that you extracted from the mkv file. I don't know if avisynth handles mkv files natively.

[darkzero297]

Jeez, something always goes wrong. I try to open the .avs file in MeGUI and it tells me to download the YV12 codec. I try to install this and then it tells me to download Quicktime 4.1.2 even though I'm pretty sure that I have Quicktime 7. What do I do?

[darkzero297]

Okay, I dealt with that. However the .avs script you gave me doesn't work. I open it in MeGUI and it tells me "Invalid arguments to function 'DirectShowSource'"

[darkzero297]

Okay, just to update and make things clearer, this is my problem.

I want to convert my .mkv(V_MPEG4/ISO/AVC) *vfr* into an .avi(XviD)

1) I cannot extract the .avi from the .mkv that I have. The only thing that I am able to do it extract the .h264 using MKVExtractGUI which I have done.

2) My .avs files always have a problem. Even if I ignore the problem and try continuing regardless, my computer keeps bothering me about the YV12 codec which I am unable to install because apparently I do not have Quicktime 4.1.2.

3) I am able to use avc2avi to convert my .h264 into an .avi however my video becomes longer due to the vfr of my video.

4) You said that I need to use the .avi I extracted from my .mkv but when I get to this point, the video is already longer than it should be and I don't want it to get out of sync so I can't really use the .avi and even if I tried using it MeGUI would give me an error about the stupid YV12 codec.

Can someone help me?

[Soopafresh]

"mkv2vfr extracts all video frames from Matroska to a CFR AVI file and a timecode file. You can extract video to avi, process it with any apps and mux back to matroska using a timecode file if you didn't add/remove frames. If you changed the frames you'd need to edit the timecode file by hand"


http://haali.cs.msu.ru/mkv/MatroskaSplitter.exe
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tc2cfr turns an avi file (with each frame present once) into a new avi file with null frames that has the specified framerate and varying display length for each individual frame based on a v1 or v2 timecode file.

tcConv performs v1<->v2 timecode file conversions.

http://web.missouri.edu/~kes25c/avi_tc_package.zip

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Install the Helix YUV codecs http://www.lillevold.com/files/yuvcodecs-1.2.exe

http://forum.doom9.org/showthread.php?t=89294&page=4

[darkzero297]

Thanks for the help people. I'll try something else though because this is getting too troublsome for me and I have other video problems for other files that I must deal with as well. I'll try this all again at another time.