Dear All, For cryptography purposes, I would like to insert decryption in the h264 codec file. What I am looking for is actually the points where I can access the each DCT coeff and MV value in CAVLC mode.
What I know so far is that there is a very long function called decode_mb_cavlc() and it has lines "tprintf(s->avctx, "final mv:%d %d\n", mx, my);" after which the final mv is calculated but can anybody tell me where I can access the residual values that are stored in the video file. So at which point is that read? As for dct level and sign values, I have the same question. Where can I access the values directly after they get read from the source file? (so that I can manipulate/decrypt them) Thanks for help.
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