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    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
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Sur d’autres sites (9247)

  • Extract motion vectors from h264 using hardware codec [closed]

    9 juin, par adore

    I am writing program to extract motion vectors from stream (videofile or webcam). While i am using software decoder everything seems ok, but when i trying to change decoder from h264 to h264_rkmpp, then and error, that appears in console :

    


    RgaBlit(1465) RGA_BLIT fail: Invalid argument 
RgaBlit(1466) RGA_BLIT fail: Invalid argument
handl-fd-vir-phy-hnd-format[0, 17, (nil), (nil), 0, 0]
rect[0, 0, 640, 480, 640, 480, 2560, 0]
f-blend-size-rotation-col-log-mmu[0, 0, 0, 0, 0, 0, 1]
handl-fd-vir-phy-hnd-format[0, 0, 0x9f70c30, (nil), 0, 0]
rect[0, 0, 640, 480, 640, 512, 2816, 0]
f-blend-size-rotation-col-log-mmu[0, 0, 0, 0, 0, 0, 1]
This output the user parameters when rga call blit fail


    


    I tried to ask chatgpt is there a way to extract motion vectors from h264 stream using hardware decoder h264_rkmpp, and he said that there isn't a way you can do it, if you want to get mvs, then you need to switch decoder back to software h264. So i googled it and didn't found accurate answer on this topic. So i am asking here. Is there a way to get motion vectors (or side data) from h264 stream using hardware decoder like h264_rkmpp ? (ffmpeg)

    


  • FFmpeg how to get an image for a particular 'coded_picture_number' together with motion vectors

    26 février 2018, par helmo

    I am looking for ways to get this output from ffmpeg :

    enter image description here

    Basically, I would like to pass to the shell, a command that allows me to output a particular frame number, let’s say coded_picture_number=200 with the motion vectors drawn into it.

    Any clue ? Thanks in advance.

  • Revision 54eda13f8d : Apply fast motion search to golden reference frame This commit enables the rtc

    10 mars 2015, par Jingning Han

    Changed Paths :
     Modify /vp9/encoder/vp9_pickmode.c


     Modify /vp9/encoder/x86/vp9_avg_intrin_sse2.c



    Apply fast motion search to golden reference frame

    This commit enables the rtc coding mode to run integral projection
    based motion search for golden reference frame. It improves the
    speed -6 compression performance by 1.1% on average, 3.46% for
    jimred_vga, 6.46% for tacomascmvvga, and 0.5% for vidyo clips. The
    speed -6 is about 6% slower.

    Change-Id : I0fe402ad2edf0149d0349ad304ab9b2abdf0c804

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