media/v4l/ext-ctrls-codec.rst

595     Encoder will decide the appropriate quantization parameter and
1150     Specify the offset that should be added to the luma quantization
1151     parameter to determine the chroma quantization parameter. Applicable
1162     the quantization parameter for each frame type is constant and set
1165     enabled then quantization parameter is adjusted to meet the chosen
1166     bitrate. Minimum and maximum value for the quantization parameter
1183     Minimum quantization parameter for H263. Valid range: from 1 to 31.
1186     Maximum quantization parameter for H263. Valid range: from 1 to 31.
1201     Minimum quantization parameter for H264. Valid range: from 0 to 51.
1204     Maximum quantization parameter for H264. Valid range: from 0 to 51.
1215     Minimum quantization parameter for the H264 I frame to limit I frame
1217     V4L2_CID_MPEG_VIDEO_H264_MIN_QP is also set, the quantization parameter
1221     Maximum quantization parameter for the H264 I frame to limit I frame
1223     V4L2_CID_MPEG_VIDEO_H264_MAX_QP is also set, the quantization parameter
1227     Minimum quantization parameter for the H264 P frame to limit P frame
1229     V4L2_CID_MPEG_VIDEO_H264_MIN_QP is also set, the quantization parameter
1233     Maximum quantization parameter for the H264 P frame to limit P frame
1235     V4L2_CID_MPEG_VIDEO_H264_MAX_QP is also set, the quantization parameter
1239     Minimum quantization parameter for the H264 B frame to limit B frame
1241     V4L2_CID_MPEG_VIDEO_H264_MIN_QP is also set, the quantization parameter
1245     Maximum quantization parameter for the H264 B frame to limit B frame
1247     V4L2_CID_MPEG_VIDEO_H264_MAX_QP is also set, the quantization parameter
1255     Minimum quantization parameter for MPEG4. Valid range: from 1 to 31.
1258     Maximum quantization parameter for MPEG4. Valid range: from 1 to 31.
2336       - Code used to determine the quantization scale to use for the IDCT.
2409       - This flag affects the inverse quantization process.
2424     Specifies quantization matrices (as extracted from the bitstream) for the
2466       - The quantization matrix coefficients for intra-coded frames, in zigzag
2472       - The quantization matrix coefficients for non-intra-coded frames, in
2478       - The quantization matrix coefficients for the chominance component of
2483       - The quantization matrix coefficients for the chrominance component of
3055       - ``quantization``
3056       - The quantization range, from enum :c:type:`v4l2_quantization`.
3424     Minimum quantization parameter for VP8.
3427     Maximum quantization parameter for VP8.
3538     Minimum quantization parameter for HEVC.
3542     Maximum quantization parameter for HEVC.
3561     Minimum quantization parameter for the HEVC I frame to limit I frame
3563     If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter
3567     Maximum quantization parameter for the HEVC I frame to limit I frame
3569     If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter
3573     Minimum quantization parameter for the HEVC P frame to limit P frame
3575     If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter
3579     Maximum quantization parameter for the HEVC P frame to limit P frame
3581     If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter
3585     Minimum quantization parameter for the HEVC B frame to limit B frame
3587     If V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP is also set, the quantization parameter
3591     Maximum quantization parameter for the HEVC B frame to limit B frame
3593     If V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP is also set, the quantization parameter
3597     HIERARCHICAL_QP allows the host to specify the quantization parameter
3637     Indicates quantization parameter for hierarchical coding layer 0.
3642     Indicates quantization parameter for hierarchical coding layer 1.
3647     Indicates quantization parameter for hierarchical coding layer 2.
3652     Indicates quantization parameter for hierarchical coding layer 3.
3657     Indicates quantization parameter for hierarchical coding layer 4.
3662     Indicates quantization parameter for hierarchical coding layer 5.
3667     Indicates quantization parameter for hierarchical coding layer 6.