scuffle_ffmpeg::ffi

Constant AV_VIDEO_ENC_PARAMS_H264

pub const AV_VIDEO_ENC_PARAMS_H264: i32 = 1;
Expand description

H.264 stores:

  • in PPS (per-picture):
    • initial QP_Y (luma) value, exported as AVVideoEncParams.qp
    • delta(s) for chroma QP values (same for both, or each separately), exported as in the corresponding entries in AVVideoEncParams.delta_qp
  • per-slice QP delta, not exported directly, added to the per-MB value
  • per-MB delta; not exported directly; the final per-MB quantizer parameter - QP_Y - minus the value in AVVideoEncParams.qp is exported as AVVideoBlockParams.qp_delta.