topic UMC::MJPEGVideoDecoder progressive JPEG in Intel® Integrated Performance Primitives

UMC::MJPEGVideoDecoder progressive JPEG

selea — Tue, 26 Apr 2011 10:30:32 GMT

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?

UMC::MJPEGVideoDecoder progressive JPEG

Vladimir_Dudnik — Tue, 26 Apr 2011 12:46:36 GMT

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

UMC::MJPEGVideoDecoder progressive JPEG

selea — Wed, 27 Apr 2011 10:57:44 GMT

Thankyou I create a 4:2:2 baseline DCT JPEG and I can decode it without problem.

Regards