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hello,how can i get a yuv image from dm355

i have got a demo to generate a encoded jpeg file from a yuv file,but how can i get a yuv file?

thanks a lot

  • What format yuv file do you want? 422 or 420 ?

    You can download form Internet about this file,but you must check the file you want to input.

     

    Regards,

    Weidong.Shi

  • i think programs like image magic or irfan view can handle such YUV images in various variants.

    so you can use those programs to take a JPEG of your choice and convert it to the format of your desire.

     

    several other development packages out there are coming with a rich set of test images either.

     

    a simple method for creating such an image from a live source is that:

    - connect a YUV camera (might be some analog CVBS source) or sensor to your EVM.

    - run a sample that captures the incoming data and writes it to a local file system

       or use a debugger and write one of the incomining data sets to some dump file.

     

  • thanks a lot

    i do not have any sample or demo to capture the incoming data  ,only have a demo to decode jpeg file from yuv. so can  you give me such a program,of course,it would be better if you can  tell me where to find the demo and related pdf file in the dvsdk

  • i expected the DM3x DVSDK contents beeing of a much richer set of samples than only a YUV to JPG converter (that even might run anywhere in some offline fashion?).

    i thought that EVM associated with the SoC comes with a ready to run video demo, the board has an IR receiver and responds to a remote control plus to key presses from the on-board buttons. there should be sources in that set that demonstrate the coding for quite similar operations. hmm? (sorry, i dont have that set on my desk right now)

  • thanks a lot.

    i want to capture a picture by dm355 and save it as a jpeg file. i think this process can devide into 2 steps, first, capture the incoming data from cmos and save it as a raw file (i think it will be yuv file), second, incode it into a jpeg file.

    in my desk,i only have a demo to complete the second step, i meet the problem in the first, in other words, is there any demo or program to capture the incoming data and writes it to a local file system?

  • the encode demo program included with the DVSDK is the closest thing that comes to mind; this demo captures and encodes a video stream and writes the encoded stream to a file.  You would need to remove the encoding portion so you are only left with capture and write to file...