H264 decoder MFX_ERR_MORE_DATA issue

H264 decoder MFX_ERR_MORE_DATA issue

Hi,

I have an issue using the mfx h264 decoder, after decoding the stream header using "MFXVideoDECODE_DecodeHeader" method, the decoder didn't output any surface and asked infinitely for more data when calling "MFXVideoDECODE_DecodeFrameAsync" method.

Do you have any explanation for this issue?

Best regards.
Abdellatif

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Hi Abdellatif,

It's hard to tell what may be going on without knowing anything about the stream you are trying to decode.

Does DecodeHeader succeed, providing correct stream information?
Are you using sample_decode?

If you are still facing issues please share the stream you are trying to decode.

Regards,Petter

Hi Petter,

Yes the DecodeHeader succeeded and we got the correct stream information, it's after calling DecodeFrameAsync several times that the decoder continue asking for more data.

We're using the directshow decoder filter sample, our input stream is a live H264 content demuxed with MainConcept demultiplexer.

Regards

Hi,

The Media SDK sample filters has only been validated with a limited set of filters. The MainConcept filters are not part of the validation so there could be potential compatibility issues that may require changes to the sample code.

You may want to try dumping the elementary stream delivered from the demuxer to a file. This will enable you debug the issue using the Media SDK console samples and other stream analysis tools.
If you can, feel free to share the stream or container with us, so that we can take a look at it and provide feedback.

I also suggest exploring alternate demultiplexers to see if the result differs.

Regards,
Petter

Hi,

Thank you for your help, the problem was the low value of the stack size of the decoding thread (in my code) witch were equal to 4K by increasing this value to 64K I was able to decode my stream correctly.

Regards,
Abdellatif

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