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selea
Beginner
30 Views

UMC::MJPEGVideoDecoder progressive JPEG

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Hi, I have a problem decoding a JPEG with theMJPEGVideoDecoder. When I try to decode the image I got always the UMC_ERR_INVALID_PARAMS error. Has theMJPEGVideoDecoder some kind of limit about the types of JPEG image decodable? or I'm missing something?

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Vladimir_Dudnik
Employee
30 Views
Hello,

Although the UMC MJPEG codec share almost the same JPEG codec found in UIC but UMC JPEG codec implementation was customized to correspond OpenDML AVI File Format Extensions. The usage of JPEG compression in AVI file format is limited by baseline DCT based compression for 4:2:2 YUV data.
For still images I would recommend you to consider IPP UIC sample.

Regards,
Vladimir

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Vladimir_Dudnik
Employee
31 Views
Hello,

Although the UMC MJPEG codec share almost the same JPEG codec found in UIC but UMC JPEG codec implementation was customized to correspond OpenDML AVI File Format Extensions. The usage of JPEG compression in AVI file format is limited by baseline DCT based compression for 4:2:2 YUV data.
For still images I would recommend you to consider IPP UIC sample.

Regards,
Vladimir

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selea
Beginner
30 Views
Thankyou I create a 4:2:2 baseline DCT JPEG and I can decode it without problem.
Regards