[MPlayer-dev-eng] Adding new codec to codecs.conf

Mark Sugrue mark at kinesensevca.com
Thu Jun 30 10:02:29 CEST 2016

Hi All,

I'm looking for some advice on adding a new codec to mplayer. The codec is
for CCTV video (*.asf) and made by Quadrox Codec Pack WebCCTV (link -

The installer has two Dlls and I believe the OPJpegProc.dll is the one I
need. fourcc is JR24 (this codec is some type of mjpeg, but ffmpeg doesn't
play the files).

I followed the instructions here (
http://www.mplayerhq.hu/DOCS/tech/win32-codec-howto.txt) and here (

Using GraphEdit, I got this data:

[image: Inline image 1]

I have added this to codecs.conf, but mplayer doesn't play the video so I
must have made an error:

videocodec qwtjr24
  info "Quadrox Jr24"
  status working
  driver DMO
  dll "OPJpegProc.dll"
  fourcc JR24
  guid 0x4A69B442, 0x28BE, 0x4991, 0x969C, 0xB500ADF5D8A8
  ;guid 9004f687-fefc-4f8f-b23a-ddd3748082e7
  out RGB24

The parts I am unsure about are:

 - Am I picking the right Guid from graphedit?
 - how to format the guid in the correct way for codecs.conf
 - What goes in 'out'?
 - Whether some extra steps are needed for DMO codecs (these seem unusual).

Thanks in advance for any help and advice.


Dr Mark Sugrue
Chief Technology Officer

Kinesense, making video evidence smarter <http://youtu.be/kGgAN6K2iy0>

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