The video quality goes bad after reading and writing!

Question

Hi,

    I'm writing a c++ component. In the component, I need to read some samples from the source video file and then write to a new file. The subtype of source video and target video is MFVideoFormat_H264. And I set the output subtype of IMFSourceReader and the input subtype of IMFSinkWriter as MFVideoFormat_RGB32. But, the quality of the target video goes bad. I have tried to use IMFQualityAdvise interface to set the quality level, but method IMFQualityAdvise::SetQualityLevel failed.

    What is the reason? How to fix it? Please help, thanks.

Answer 1

Hi Aragorn,

Please post the related code or upload the component to skydrive. And I will reproduce on my side.

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Roy
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Answer 2

Hi Roy,

    Here is the link to skydrive: http://sdrv.ms/YD1bD3. Thanks a lot.