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  • What is the best way to fill AVFrame.data

    21 septembre 2015, par Tim Hsu

    I want to transfer opengl framebuffer data to AVCodec as fast as possible.

    I’ve already converted RGB to YUV with shader and read it with glReadPixels

    I still need to fill AVFrame data manually. Is there any better way ?

    AVFrame *frame;
    
// Y
    
frame->data[0][y*frame->linesize[0]+x] = data[i*3];
    
// U
    
frame->data[1][y*frame->linesize[1]+x] = data[i*3+1];
    
// V
    
frame->data[2][y*frame->linesize[2]+x] = data[i*3+2];

  • Error in playing encrypted data from url using ffmpeg

    3 février 2015, par Shijin Bose

    I want to play a video data from url. but the data is given as encrypted. so am first store the data to a buffer and then decrypt and then given to AVformat_open_input. but i found it is not possible to give buffer data toAVformat_open_input function. i can’t store the data to secondary device (dew to security).

    is it possible to play an encrypted data from url ?

  • Does AVFrame store AV_PIX_FMT_YUV420P data as YVU ?

    28 juin 2017, par Peter

    I am decoding raw H.265 data using avcodec_decode_video2 api. When I examine the resulting instance pictYUV of type AVFrame, I see that pictYUV->format is AV_PIX_FMT_YUV420P and pictYUV->data[0] points to Y-plane. Both of these are expected. However, it appears pictYUV->data[1] seem to contain V-plane data and pictYUV->data[2]seem to contain U-plane data. My intuition was that pictYUV->data would store YUV planes in that order and not YVU planes. Wondering if the data is always ordered as YVU or is there some flag I failed to look at. Regards.

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