Hi everyone, i'm new to the ffmpeg community, but I'm trying to implement a c-application that uses the ffmpeg libraries (ffmpeg 3.0) in order to print out qp, mb_type and dct_coeff for each MB/frame. As far as I know, those info are available from CLI, using -debug flag, indeed I used that flag for an H.262 video stream. My main problem is to extract dct_coeffs, from an H.264 stream, during the decoding process.
In this mailing-list I found out an old post, that suggested to look for the h264_cabac.c file and the decode_cabac_residual_internal() function and consequently the ff_h264_decode_mb_cabac(). Unfortunately I was not able to find a solution to my problem. Is there a variable in H264Context or AVCodecContext (or somewhere else) that stores the residual values for each frame? In order to further clarify my request, I would like to obtain, after the entropy decoder process, the dequantized residuals or idct residuals, if they are stored. Thanks _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
