Media (Intel® oneAPI Video Processing Library, Intel Media SDK)
Access community support with transcoding, decoding, and encoding in applications using media tools from Intel. This includes Intel® oneAPI Video Processing Library and Intel® Media SDK.

H.264 SW decode artifacts

eugeneyaknn
Beginner
268 Views
Hi,

There is a new MP4 H.264 (Baseline@L1.3) file received from a customer.
There are artifacts during decoding using Software Decoder integrated into AVS4YOU products. The sample_decode.exe (2.0.10.21737 Beta) generates uncompressed output without artifacts but there are too few frames (283 of 15042).
Could you please look at this file?
H.264 Elementary stream
Uncompressed output from sample_decode.exe
log of sample_decode.exe

Thank you in advance.
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1 Solution
Nina_K_Intel
Employee
268 Views
Eugene,

I confirm that the issue you found is a bug in AVC decoder of Media SDK 2.0. The upcoming Media SDK 2.0 Gold update and Media SDK 3.0 Beta releases will both contain the fix.
Thank you for reporting this problem.

Regards,
Nina

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10 Replies
Nina_K_Intel
Employee
268 Views
Hi Eugene,

I would look but cannot access your links, can you check?

Nina
eugeneyaknn
Beginner
268 Views
Hi Nina, nice to see reply from you. Sorry - seems that dropbox's syncing will take some more time.
Just now you can download H.264 stream from alternative location. I'll let you know when the dropbox links will be available too.
eugeneyaknn
Beginner
269 Views
Dropbox's links now should be available too.
Nina_K_Intel
Employee
269 Views
Eugene, I got the h264 stream and checked it - with both 2.0 Beta and Gold version of sample+library I get 432 frames decoded (in stream there's actually 15 042 frames), but no error message as in your log.

Anyway, not the whole stream is decoded so seems there's an issue in Media SDK decoder, I will provide you with more details after we do further investigation.

Thank you for reporting the problem.

Nina


eugeneyaknn
Beginner
269 Views
Thank you Nina, please let me know in case of any news.
eugeneyaknn
Beginner
269 Views
Nina, there is one more file with very similar problem got from another user:
first 20MB of elementary H.264 stream
uncompressed YUV
log
Nina_K_Intel
Employee
269 Views
Hi Eugene,
Right, the problem looks same. I will add up this stream to the bug report.
Nina
Nina_K_Intel
Employee
269 Views
Eugene,

I confirm that the issue you found is a bug in AVC decoder of Media SDK 2.0. The upcoming Media SDK 2.0 Gold update and Media SDK 3.0 Beta releases will both contain the fix.
Thank you for reporting this problem.

Regards,
Nina
hui1234
Beginner
269 Views
Hi

What I can not decode the bitstream to determine the problem and the same situation
Nina_K_Intel
Employee
269 Views
Hi,
Could you please provide more details of the decoding problem you face - platform, OS, Media SDK version, application (sample_decode?), symptom (artifacts? error message?), stream etc.
Thanks,
Nina
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