https://github.com/renderheads/directshow-vfwfilter

VFW Video Compression Filter for DirectShow
https://github.com/renderheads/directshow-vfwfilter

directshow renderheads vfw video

Last synced: about 1 month ago
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VFW Video Compression Filter for DirectShow

• Host: GitHub
• URL: https://github.com/renderheads/directshow-vfwfilter
• Owner: RenderHeads
• License: mit
• Created: 2015-05-24T22:34:35.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2020-10-19T13:10:32.000Z (almost 5 years ago)
• Last Synced: 2025-04-11T12:52:10.186Z (6 months ago)
• Topics: directshow, renderheads, vfw, video
• Language: C++
• Homepage:
• Size: 370 KB
• Stars: 8
• Watchers: 3
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# VFW Video Codec DirectShow Filter

![alt tag](Docs/graph.png)

This filter allows you to select any VFW video compression codec and use it to build a DirectShow graph.

## Background

This filter was written to get around what seems to be a bug in the 64-bit implementation  of Microsoft DirectShow.

Usually (in 32-bit apps) when DirectShow enumerates filters it also include legacy audio and video VFW codecs.  For some reason in 64-bit apps it fails to enumerate any of the legacy VFW video codecs but it enumerates the audio codecs just fine.  When enumeration video compression filters in the category 'CLSID_VideoCompressorCategory' DirectShow creates wrapper filters for all legacy VFW video codecs using the 'AVI Compressor' filter.  For legacy audio codecs it does the same thing using 'ACM Wrapper'.  In 64-bit mode all legacy video codecs are missing.

## Build

+ Compiler: Visual Studio 2008

+ Installer: NSIS