Media Foundation Encoder MF_E_TRANSCODE_NO_MATCHING_ENCODER

Question

I am trying to convert from wmv to mp4. First of do I need to implement my IMFTransform to do this ? Do i need to convert the video to MFVideoFormat_I420 ?

As far as I know if you create the topology correctly this should be handled automatically. So I created my profile showed in the

http://msdn.microsoft.com/en-us/library/windows/desktop/ff819476%28v=vs.85%29.aspx

but i get a MF_E_TRANSCODE_NO_MATCHING_ENCODER. I have windows 7 so, i should have the encoder.

Also Does anyone know where the source code for that tutorial is. It is not under SDK samples.

Thanks.

Answer 1

You don't show code - noone knows what is wrong.

Take a look at this transcoding sample, which comes with source code and does exactly what you are trying to do: transcoding from ASF into MP4.

http://blogs.msdn.com/b/mf/archive/2009/12/02/mfsimpleencode.aspx

MFSimpleEncode.exe - This is a command line tool that transcodes files from one media format to another. The source code is provided to use as a reference if you write your own transcode application. This tool uses the Media Foundation transcode API, which was introduced in Windows 7.

Examples:

1. Transcode ASF to MPEG-4:

   MFSimpleencode.exe –i Input.wmv –o output.mp4 –p TranscodeProfileMPEG4.xml