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2015-02-28

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x264vfw is the VfW Video for Windows version of well known x264 encoder ffh264 decoder from FFmpeg/Libav project.

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Additional Project Details.

VFW Codec for VirtualDub. virtualdub video for windows codec error message; Help: Couldn t locate decompressor for format XVID VirtualDub requires a VFW codec;.
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.

Vfw Codec software free downloads and reviews at WinSite. Free Vfw Codec Shareware and Freeware.

Video for Windows VfW is a multimedia framework developed by Microsoft that allows Windows to play and encode digital video.

Software Matrox VFW Software Codecs Version 1.0 May 5, 2010 The Matrox Video for Windows VFW software codecs let you render and play back Matrox. avi files.

x264vfw

Okay now

I have Windows Vista Home Premium and I downloaded VirtualDub 1.7.8 because I have a project that I want to start working on. I m using a tutorial for practice before I start my project, so I m using the files that the tutorial provided. When I tried opening the video file on VirtualDub it said:

Couldn t locate decompressor for format WMV3 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.

-----

I searched for a VFW compatible codec that could be used with VirtualDub but it didn t work. Is this just my computer being stupid or did something completely fly over my head. Thank you for helping me out, my mind is completely fried right now.

Thank you. That seemed to do the trick. I m probably just stupider than I thought XD

Hi sorry to annoy you but I have the exact same problem but the message comes up with couldn t locate decompressor for format Xvid unkown

I m hoping that you can help me

Originally Posted by sambat

Add the WMV plugin to the plugins folder

Or install a VFW WMV3 decoder like ffdshow or WMV9VCM.

You still have to install the WMV Plugin when using ffdshow. WMV9VCM is an encoder Video Compression Manager.

Originally Posted by DarrellS

You still have to install the WMV Plugin when using ffdshow.

Yes, sorry, I should have made this clear. But the OP has already gotten past the point of opening the source file. VirtualDub is now complaining about not finding a WMV3 decoder. So either he has the WMV source plugin already, or his WMV3 video is in another AVI. container.

WMV9VCM is an encoder Video Compression Manager.

I thought it included a VFW decoder too, but I just checked and found it only includes the VFW encoder.

Hm. The OP Katsu-kohai seems to have resolved the problem in 2008.

Originally Posted by Katsu-kohai

Thank you. That seemed to do the trick. I m probably just stupider than I thought XD

Then, hezbag revived the post today with a related issue:

Originally Posted by hezbag

Hi sorry to annoy you but I have the exact same problem but the message comes up with couldn t locate decompressor for format Xvid unkown

If cameras add ten pounds, why would people want to eat them.

Hi there,

sorry for the question but I have problems w/ this program, too.. I ve installed all things required, done the things you ve recommended here, and it s still not working, cannot find the vfw codec but I m sure I have one. I ve already had K-Lite codec before, installed DivX codecs what s the problem.

Thanks for your help, regards.

Which VfW codec.

You ll probably need to find ffdshow s folder in your Start menu, click on VFW configuration. In the window that pops up, make sure you re on the Decoder tab, and that Codecs is highlighted in the left side of the window. Scroll down on the right until you find the codec that VirtualDub can t find. In the Decoder column for that codec, click on the dropdown and set it to libavcodec.

Click OK, then run VirtualDub and see if the problem persists.

Thanks for your help.

I ve tried what you said, but sadly it doesn t work. Btw I ve installed the K-Lite pack, DivX, DivX Pro VFW, Xvid.. that s all I guess. They all worked pretty good with the other editing programs.

And I think it matters that it s VirtualDubMod, not only VirtualDub.

It s an MKV file I want to open, and there are two error messages if there are, because sometimes it simply froze.. :

1. MKV: Subtitle stream 2 contains overlapping subtitles. Some of the may not be kept when editing. --- I think it s not a big deal since I want to remove the subtitles from this file anyways

2. Couldn t locate decompressor for format. unknown. VirtualDub requires a Video for Windows VFW compatible codec to decompress video. DirectShow codecs, such as those used by Windows Media Payer, are not suitable. Only Direct Stream Copy is available for this video.

VirtualDubMod s support for MKV is rather outdated, and can t handle h.264/AVC video through the VfW interface at all that s why you get the Cannot locate decompressor for format ÿÿÿÿ message.

Since all you want to do is remove the subtitle stream, install mkvtoolnix instead, and use MKVMergeGUI mmg.exe from the package to delete the subtitle stream. Uncheck the box next to the subtitle stream, after you ve loaded the video, and remux to a new MKV.

You might also want to install MKVExtractGUI while you re at it, to the same directory as mkvtoolnix, just to have it handy. You won t need it for the above, but it s useful to have around if you re going to do a lot of work with MKVs.

Originally Posted by ffspor_8

Given that you have an MKV file, my guess is you need an h.264 decoder. ffdshow has a VFW h.264 that VirtualDubMod can use.

Use MediaInfo to get information about your files. It will tell you what audio and video codecs are used.

Originally Posted by Ai Haibara

Thanks so much - one more question, then I ll try handle this on my own

Can I convert the MKV files to AVI with this program.

//okay, I m silly, I figured out that I cannot of VirtualDubMod s acting like that and I need to convert it fast, what can I do.

Right now, I m using AVIDemux to convert MKVs to AVI. It takes a bit of getting used to, though, and may not run as well depending on your hardware at least it did in my experience - it runs great on the system listed in my profile, but on the Vista32 system I was using before that dual-core with 1GB RAM, it ran a lot slower, even with the process priority increased.

You might try some of the ffmpeg/mencoder GUI converters like Avanti and WinFF. It s also possible to frameserve an MKV into VirtualDub/Mod using AVISynth scripts, but that s not for beginners and may require a little experimentation to make sure the video and audio remains in sync.

Originally Posted by KBeee

It can be installed in any directory or only in VirtualDub directory for using in VirtualDub.

and what about mp4 format support. it doesn t see this format

Originally Posted by Gr f

MP4, MOV, whatever: fcchandler/Plugins/QuickTime/index.html

Xvid: just use the pesky installer, problem solved

P.S.: bumping OLDE topics is often considered a bad practice

link s dead, it doesn t open

XviD codec installed, but anyway I can not figure out its settings, I mean where to specify the frame size, frame per sec, average bitrate and others, those utilities in XviD codec directory for me are useless

Originally Posted by El Heggunte

bumping OLDE topics

by this I m not quite understand what you mean

fcchandler/Plugins/QuickTime/index.html works here.

But sometimes, depending on where you are, or on the crappiness of your ISP,

you may need the intermediation of a proxy server

Ai Haibara s last post was written on 27th Dec 2009, GMT.

Your first post was written on 21st Mar 2014, GMT.

That is to say, 4 years nearly-3 months later.