avenc_msmpeg4v2
libav msmpeg4v2 encoder
Hierarchy
GObject ╰──GInitiallyUnowned ╰──GstObject ╰──GstElement ╰──GstVideoEncoder ╰──avenc_msmpeg4v2
Implemented interfaces
Factory details
Authors: – Wim Taymans
Classification: – Codec/Encoder/Video
Rank – secondary
Plugin – libav
Package – GStreamer FFMPEG Plug-ins
Pad Templates
Properties
a53cc
“a53cc” gboolean
Use A53 Closed Captions (if available) (Private codec option)
Flags : Read / Write
Default value : true
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 (Private codec option)
Flags : Read / Write
Default value : 40
b-strategy
“b-strategy” gint
Strategy to choose between I/P/B-frames (Private codec option)
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
border-mask
“border-mask” gfloat
increase the quantizer for macroblocks close to borders (Private codec option)
Flags : Read / Write
Default value : 0
brd-scale
“brd-scale” gint
Downscale frames for dynamic B-frame decision (Private codec option)
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-elim-threshold
“chroma-elim-threshold” gint
single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (Private codec option)
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
err-detect
“err-detect” avcodeccontext-err-detect *
set error detection flags (Generic codec option, might have no effect)
Flags : Read / Write
Default value : (none)
error-rate
“error-rate” gint
Simulate errors in the bitstream to test error concealment. (Private codec option)
Flags : Read / Write
Default value : 0
export-side-data
“export-side-data” avcodeccontext-export-side-data *
Export metadata as side data (Generic codec option, might have no effect)
Flags : Read / Write
Default value : (none)
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)
force-duplicated-matrix
“force-duplicated-matrix” gboolean
Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (Private codec option)
Flags : Read / Write
Default value : false
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
ibias
“ibias” gint
intra quant bias (Private codec option)
Flags : Read / Write
Default value : 999999
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)
intra-penalty
“intra-penalty” gint
Penalty for intra blocks in block decision (Private codec option)
Flags : Read / Write
Default value : 0
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
lmax
“lmax” gint
maximum Lagrange factor (VBR) (Private codec option)
Flags : Read / Write
Default value : 3658
lmin
“lmin” gint
minimum Lagrange factor (VBR) (Private codec option)
Flags : Read / Write
Default value : 236
luma-elim-threshold
“luma-elim-threshold” gint
single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (Private codec option)
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) (Private codec option)
Flags : Read / Write
Default value : 256
mepre
“mepre” gint
pre motion estimation (Private codec option)
Flags : Read / Write
Default value : 0
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
motion-est
“motion-est” Msmpeg4v2-encoder-motion-est *
motion estimation algorithm (Private codec option)
Flags : Read / Write
Default value : epzs (1)
mpeg-quant
“mpeg-quant” gint
Use MPEG quantizers instead of H.263 (Private codec option)
Flags : Read / Write
Default value : 0
mpv-flags
“mpv-flags” Msmpeg4v2-encoder-mpv-flags *
Flags common for all mpegvideo-based encoders. (Private codec option)
Flags : Read / Write
Default value : (none)
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
noise-reduction
“noise-reduction” gint
Noise reduction (Private codec option)
Flags : Read / Write
Default value : 0
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)
pbias
“pbias” gint
inter quant bias (Private codec option)
Flags : Read / Write
Default value : 999999
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 (Private codec option)
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
qsquish
“qsquish” gfloat
how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (Private codec option)
Flags : Read / Write
Default value : 0
quantizer
“quantizer” gfloat
Constant Quantizer
Flags : Read / Write / Construct
Default value : 0.01
quantizer-noise-shaping
“quantizer-noise-shaping” gint
(null) (Private codec option)
Flags : Read / Write
Default value : 0
rc-buf-aggressivity
“rc-buf-aggressivity” gfloat
currently useless (Private codec option)
Flags : Read / Write
Default value : 1
rc-eq
“rc-eq” gchararray
Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex. (Private codec option)
Flags : Read / Write
Default value : NULL
rc-init-cplx
“rc-init-cplx” gfloat
initial complexity for 1-pass encoding (Private codec option)
Flags : Read / Write
Default value : 0
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
rc-qmod-amp
“rc-qmod-amp” gfloat
experimental quantizer modulation (Private codec option)
Flags : Read / Write
Default value : 0
rc-qmod-freq
“rc-qmod-freq” gint
experimental quantizer modulation (Private codec option)
Flags : Read / Write
Default value : 0
rc-strategy
“rc-strategy” Msmpeg4v2-encoder-rc-strategy *
ratecontrol method (Private codec option)
Flags : Read / Write
Default value : ffmpeg (0)
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 (Private codec option)
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-cmp
“skip-cmp” Msmpeg4v2-encoder-cmp-func *
Frame skip compare function (Private codec option)
Flags : Read / Write
Default value : dctmax (13)
skip-exp
“skip-exp” gint
Frame skip exponent (Private codec option)
Flags : Read / Write
Default value : 0
skip-factor
“skip-factor” gint
Frame skip factor (Private codec option)
Flags : Read / Write
Default value : 0
skip-threshold
“skip-threshold” gint
Frame skip threshold (Private codec option)
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
Msmpeg4v2-encoder-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, low quality
bit
(5) – Number of bits needed for the block
rd
(6) – Rate distortion optimal, slow
zero
(7) – Zero
vsad
(8) – Sum of absolute vertical differences
vsse
(9) – Sum of squared vertical differences
nsse
(10) – Noise preserving sum of squared differences
dctmax
(13) – dctmax
dct264
(14) – dct264
msad
(15) – Sum of absolute differences, median predicted
chroma
(256) – chroma
Msmpeg4v2-encoder-motion-est
Members
zero
(0) – zero
epzs
(1) – epzs
xone
(2) – xone
Msmpeg4v2-encoder-mpv-flags
Members
skip_rd
(0x00000001) – RD optimal MB level residual skipping
strict_gop
(0x00000002) – Strictly enforce gop size
qp_rd
(0x00000004) – Use rate distortion optimization for qp selection
cbp_rd
(0x00000008) – use rate distortion optimization for CBP
naq
(0x00000010) – normalize adaptive quantization
mv0
(0x00000020) – always try a mb with mv=<0,0>
Msmpeg4v2-encoder-rc-strategy
Members
ffmpeg
(0) – deprecated, does nothing
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