avenc_zmbv

libav zmbv encoder

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstVideoEncoder
                    ╰──avenc_zmbv

Implemented interfaces

Factory details

Authors: – Wim Taymans , Ronald Bultje

Classification:Codec/Encoder/Video

Rank – secondary

Plugin – libav

Package – GStreamer FFMPEG Plug-ins

Pad Templates

sink

video/x-raw:
         format: RGB8P

Presencealways

Directionsink

Object typeGstPad


src

video/x-zmbv:

Presencealways

Directionsrc

Object typeGstPad


Properties

b-qfactor

“b-qfactor” gfloat

QP factor between P- and B-frames (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 1.25


b-qoffset

“b-qoffset” gfloat

QP offset between P- and B-frames (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 1.25


b-sensitivity

“b-sensitivity” gint

adjust sensitivity of b_frame_strategy 1 (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 40


b-strategy

“b-strategy” gint

strategy to choose between I/P/B-frames (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


bidir-refine

“bidir-refine” gint

refine the two motion vectors used in bidirectional macroblocks (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 1


bitrate

“bitrate” gint

set bitrate (in bits/s) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 200000


bitrate-tolerance

“bitrate-tolerance” gint

Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far ratecontrol is willing to deviate from the target average bitrate value. This is not related to minimum/maximum bitrate. Lowering tolerance too much has an adverse effect on quality. (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 4000000


brd-scale

“brd-scale” gint

downscale frames for dynamic B-frame decision (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


bufsize

“bufsize” gint

set ratecontrol buffer size (in bits) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


chroma-sample-location

“chroma-sample-location” avcodeccontext-chroma-sample-location-type *

chroma sample location (Generic codec option, might have no effect)

Flags : Read / Write

Default value : unknown (0)


chromaoffset

“chromaoffset” gint

chroma QP offset from luma (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


cmp

“cmp” avcodeccontext-cmp-func *

full-pel ME compare function (Generic codec option, might have no effect)

Flags : Read / Write

Default value : sad (0)


coder

“coder” avcodeccontext-coder *

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : vlc (0)


compression-level

“compression-level” gint

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : -1


context

“context” gint

context model (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


dark-mask

“dark-mask” gfloat

compresses dark areas stronger than medium ones (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


dc

“dc” gint

intra_dc_precision (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


dct

“dct” avcodeccontext-dct *

DCT algorithm (Generic codec option, might have no effect)

Flags : Read / Write

Default value : auto (0)


debug

“debug” avcodeccontext-debug *

print specific debug info (Generic codec option, might have no effect)

Flags : Read / Write

Default value : (none)


dia-size

“dia-size” gint

diamond type & size for motion estimation (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


dump-separator

“dump-separator” gchararray

set information dump field separator (Generic codec option, might have no effect)

Flags : Read / Write

Default value : NULL


field-order

“field-order” avcodeccontext-field-order *

Field order (Generic codec option, might have no effect)

Flags : Read / Write

Default value : unknown (0)


flags

“flags” avcodeccontext-flags *

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : (none)


flags2

“flags2” avcodeccontext-flags2 *

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : (none)


global-quality

“global-quality” gint

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


gop-size

“gop-size” gint

set the group of picture (GOP) size (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 12


i-qfactor

“i-qfactor” gfloat

QP factor between P- and I-frames (Generic codec option, might have no effect)

Flags : Read / Write

Default value : -0.8


i-qoffset

“i-qoffset” gfloat

QP offset between P- and I-frames (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


idct

“idct” avcodeccontext-idct *

select IDCT implementation (Generic codec option, might have no effect)

Flags : Read / Write

Default value : auto (0)


ildctcmp

“ildctcmp” avcodeccontext-cmp-func *

interlaced DCT compare function (Generic codec option, might have no effect)

Flags : Read / Write

Default value : vsad (8)


keyint-min

“keyint-min” gint

minimum interval between IDR-frames (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 25


last-pred

“last-pred” gint

amount of motion predictors from the previous frame (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


lumi-mask

“lumi-mask” gfloat

compresses bright areas stronger than medium ones (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


max-bframes

“max-bframes” gint

set maximum number of B-frames between non-B-frames (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


max-pixels

“max-pixels” gint64

Maximum number of pixels (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 2147483647


maxrate

“maxrate” gint64

maximum bitrate (in bits/s). Used for VBV together with bufsize. (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


mbcmp

“mbcmp” avcodeccontext-cmp-func *

macroblock compare function (Generic codec option, might have no effect)

Flags : Read / Write

Default value : sad (0)


mbd

“mbd” avcodeccontext-mbd *

macroblock decision algorithm (high quality mode) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : simple (0)


mblmax

“mblmax” gint

maximum macroblock Lagrange factor (VBR) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 3658


mblmin

“mblmin” gint

minimum macroblock Lagrange factor (VBR) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 236


me-range

“me-range” gint

limit motion vectors range (1023 for DivX player) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


mepc

“mepc” gint

motion estimation bitrate penalty compensation (1.0 = 256) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 256


minrate

“minrate” gint64

minimum bitrate (in bits/s). Most useful in setting up a CBR encode. It is of little use otherwise. (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


mpeg-quant

“mpeg-quant” gint

use MPEG quantizers instead of H.263 (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


multipass-cache-file

“multipass-cache-file” gchararray

Filename for multipass cache file

Flags : Read / Write / Construct

Default value : stats.log


mv0-threshold

“mv0-threshold” gint

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 256


nr

“nr” gint

noise reduction (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


nssew

“nssew” gint

nsse weight (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 8


p-mask

“p-mask” gfloat

inter masking (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


pass

“pass” GstLibAVEncPass *

Encoding pass/type

Flags : Read / Write / Construct

Default value : cbr (0)


pre-dia-size

“pre-dia-size” gint

diamond type & size for motion estimation pre-pass (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


precmp

“precmp” avcodeccontext-cmp-func *

pre motion estimation compare function (Generic codec option, might have no effect)

Flags : Read / Write

Default value : sad (0)


pred

“pred” avcodeccontext-pred *

prediction method (Generic codec option, might have no effect)

Flags : Read / Write

Default value : left (0)


preme

“preme” gint

pre motion estimation (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


ps

“ps” gint

RTP payload size in bytes (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


qblur

“qblur” gfloat

video quantizer scale blur (VBR) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0.5


qcomp

“qcomp” gfloat

video quantizer scale compression (VBR). Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0 (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0.5


qdiff

“qdiff” gint

maximum difference between the quantizer scales (VBR) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 3


qmax

“qmax” gint

maximum video quantizer scale (VBR) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 31


qmin

“qmin” gint

minimum video quantizer scale (VBR) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 2


quantizer

“quantizer” gfloat

Constant Quantizer

Flags : Read / Write / Construct

Default value : 0.01


rc-init-occupancy

“rc-init-occupancy” gint

number of bits which should be loaded into the rc buffer before decoding starts (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


rc-max-vbv-use

“rc-max-vbv-use” gfloat

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


rc-min-vbv-use

“rc-min-vbv-use” gfloat

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 3


refs

“refs” gint

reference frames to consider for motion compensation (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 1


sc-threshold

“sc-threshold” gint

scene change threshold (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


scplx-mask

“scplx-mask” gfloat

spatial complexity masking (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


side-data-only-packets

“side-data-only-packets” gboolean

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : true


skip-exp

“skip-exp” gint

frame skip exponent (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


skip-factor

“skip-factor” gint

frame skip factor (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


skip-threshold

“skip-threshold” gint

frame skip threshold (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


skipcmp

“skipcmp” avcodeccontext-cmp-func *

frame skip compare function (Generic codec option, might have no effect)

Flags : Read / Write

Default value : dctmax (13)


slices

“slices” gint

set the number of slices, used in parallelized encoding (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


strict

“strict” avcodeccontext-strict *

how strictly to follow the standards (Generic codec option, might have no effect)

Flags : Read / Write

Default value : normal (0)


subcmp

“subcmp” avcodeccontext-cmp-func *

sub-pel ME compare function (Generic codec option, might have no effect)

Flags : Read / Write

Default value : sad (0)


subq

“subq” gint

sub-pel motion estimation quality (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 8


tcplx-mask

“tcplx-mask” gfloat

temporal complexity masking (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


thread-type

“thread-type” avcodeccontext-thread-type *

select multithreading type (Generic codec option, might have no effect)

Flags : Read / Write

Default value : slice+frame


threads

“threads” avcodeccontext-threads *

set the number of threads (Generic codec option, might have no effect)

Flags : Read / Write

Default value : unknown (1)


ticks-per-frame

“ticks-per-frame” gint

(null) (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 1


timecode-frame-start

“timecode-frame-start” gint64

GOP timecode frame start number, in non-drop-frame format (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 18446744073709551615


trellis

“trellis” gint

rate-distortion optimal quantization (Generic codec option, might have no effect)

Flags : Read / Write

Default value : 0


Named constants

GstLibAVEncPass

Members

cbr (0) – Constant Bitrate Encoding
quant (2) – Constant Quantizer
pass1 (512) – VBR Encoding - Pass 1
pass2 (1024) – VBR Encoding - Pass 2

avcodeccontext-chroma-sample-location-type

Members

unknown (0) – Unspecified
left (1) – Left
center (2) – Center
topleft (3) – Top-left
top (4) – Top
bottomleft (5) – Bottom-left
bottom (6) – Bottom

avcodeccontext-cmp-func

Members

sad (0) – sum of absolute differences, fast
sse (1) – sum of squared errors
satd (2) – sum of absolute Hadamard transformed differences
dct (3) – sum of absolute DCT transformed differences
psnr (4) – sum of squared quantization errors (avoid, low quality)
bit (5) – number of bits needed for the block
rd (6) – rate distortion optimal, slow
zero (7) – 0
vsad (8) – sum of absolute vertical differences
vsse (9) – sum of squared vertical differences
nsse (10) – noise preserving sum of squared differences
w53 (11) – 5/3 wavelet, only used in snow
w97 (12) – 9/7 wavelet, only used in snow
dctmax (13) – dctmax
msad (15) – sum of absolute differences, median predicted
chroma (256) – chroma

avcodeccontext-coder

Members

vlc (0) – variable length coder / Huffman coder
ac (1) – arithmetic coder
raw (2) – raw (no encoding)
rle (3) – run-length coder

avcodeccontext-dct

Members

auto (0) – autoselect a good one
fastint (1) – fast integer
int (2) – accurate integer
mmx (3) – mmx
altivec (5) – altivec
faan (6) – floating point AAN DCT

avcodeccontext-debug

Members

pict (0x00000001) – picture info
rc (0x00000002) – rate control
bitstream (0x00000004) – bitstream
mb_type (0x00000008) – macroblock (MB) type
qp (0x00000010) – per-block quantization parameter (QP)
dct_coeff (0x00000040) – dct_coeff
skip (0x00000080) – skip
startcode (0x00000100) – startcode
er (0x00000400) – error recognition
mmco (0x00000800) – memory management control operations (H.264)
bugs (0x00001000) – bugs
buffers (0x00008000) – picture buffer allocations
thread_ops (0x00010000) – threading operations
green_metadata (0x00800000) – green_metadata
nomc (0x01000000) – skip motion compensation

avcodeccontext-field-order

Members

unknown (0) – Unspecified
progressive (1) – progressive
tt (2) – tt
bb (3) – bb
tb (4) – tb
bt (5) – bt

avcodeccontext-flags

Members

unaligned (0x00000001) – allow decoders to produce unaligned output
mv4 (0x00000004) – use four motion vectors per macroblock (MPEG-4)
output_corrupt (0x00000008) – Output even potentially corrupted frames
qpel (0x00000010) – use 1/4-pel motion compensation
loop (0x00000800) – use loop filter
gray (0x00002000) – only decode/encode grayscale
psnr (0x00008000) – error[?] variables will be set during encoding
truncated (0x00010000) – Input bitstream might be randomly truncated
ildct (0x00040000) – use interlaced DCT
low_delay (0x00080000) – force low delay
global_header (0x00400000) – place global headers in extradata instead of every keyframe
bitexact (0x00800000) – use only bitexact functions (except (I)DCT)
aic (0x01000000) – H.263 advanced intra coding / MPEG-4 AC prediction
ilme (0x20000000) – interlaced motion estimation
cgop (0x80000000) – closed GOP

avcodeccontext-flags2

Members

fast (0x00000001) – allow non-spec-compliant speedup tricks
noout (0x00000004) – skip bitstream encoding
local_header (0x00000008) – place global headers at every keyframe instead of in extradata
chunks (0x00008000) – Frame data might be split into multiple chunks
ignorecrop (0x00010000) – ignore cropping information from sps
showall (0x00400000) – Show all frames before the first keyframe
export_mvs (0x10000000) – export motion vectors through frame side data
skip_manual (0x20000000) – do not skip samples and export skip information as frame side data
ass_ro_flush_noop (0x40000000) – do not reset ASS ReadOrder field on flush

avcodeccontext-idct

Members

auto (0) – auto
int (1) – int
simple (2) – simple
simplemmx (3) – simplemmx
arm (7) – arm
altivec (8) – altivec
simplearm (10) – simplearm
xvid (14) – xvid
simplearmv5te (16) – simplearmv5te
simplearmv6 (17) – simplearmv6
faani (20) – floating point AAN IDCT
simpleneon (22) – simpleneon
simpleauto (128) – simpleauto

avcodeccontext-mbd

Members

simple (0) – use mbcmp
bits (1) – use fewest bits
rd (2) – use best rate distortion

avcodeccontext-pred

Members

left (0) – left
plane (1) – plane
median (2) – median

avcodeccontext-strict

Members

experimental (-2) – allow non-standardized experimental things
unofficial (-1) – allow unofficial extensions
normal (0) – normal
strict (1) – strictly conform to all the things in the spec no matter what the consequences
very (2) – strictly conform to a older more strict version of the spec or reference software

avcodeccontext-thread-type

Members

frame (0x00000001) – frame
slice (0x00000002) – slice

avcodeccontext-threads

Members

auto (0) – autodetect a suitable number of threads to use
unknown (1) – Unspecified

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