Properties
arnr-maxframes
“arnr-maxframes” gint
AltRef maximum number of frames
Flags : Read / Write
Default value : 0
auto-alt-ref
“auto-alt-ref” gboolean
Automatically generate AltRef frames
Flags : Read / Write
Default value : false
bits-per-pixel
“bits-per-pixel” gfloat
Factor to convert number of pixels to bitrate value (only has an effect if target-bitrate=0)
Flags : Read / Write
Default value : 0.0434
buffer-initial-size
“buffer-initial-size” gint
Initial client buffer size (ms)
Flags : Read / Write
Default value : 4000
buffer-optimal-size
“buffer-optimal-size” gint
Optimal client buffer size (ms)
Flags : Read / Write
Default value : 5000
deadline
“deadline” gint64
Deadline per frame (usec, 0=best, 1=realtime)
Flags : Read / Write
Default value : 1000000
dropframe-threshold
“dropframe-threshold” gint
Temporal resampling threshold (buf %%)
Flags : Read / Write
Default value : 0
end-usage
“end-usage” Vpxenc-end-usage *
Rate control mode
Flags : Read / Write
Default value : vbr (0)
error-resilient
“error-resilient” Vpxenc-er-flags *
Error resilience flags
Flags : Read / Write
Default value : (none)
horizontal-scaling-mode
“horizontal-scaling-mode” GstVPXEncScalingMode *
Horizontal scaling mode
Flags : Read / Write
Default value : normal (0)
keyframe-max-dist
“keyframe-max-dist” gint
Maximum distance between keyframes (number of frames)
Flags : Read / Write
Default value : 128
keyframe-mode
“keyframe-mode” Vpxenc-kf-mode *
Keyframe placement
Flags : Read / Write
Default value : auto (1)
lag-in-frames
“lag-in-frames” gint
Maximum number of frames to lag
Flags : Read / Write
Default value : 0
max-intra-bitrate
“max-intra-bitrate” gint
Maximum Intra frame bitrate
Flags : Read / Write
Default value : 0
max-quantizer
“max-quantizer” gint
Maximum Quantizer (worst)
Flags : Read / Write
Default value : 63
multipass-cache-file
“multipass-cache-file” gchararray
Multipass cache file. If stream caps reinited, multiple files will be created: file, file.1, file.2, ... and so on.
Flags : Read / Write
Default value : multipass.cache
multipass-mode
“multipass-mode” Vpxenc-multipass-mode *
Multipass encode mode
Flags : Read / Write
Default value : one-pass (0)
noise-sensitivity
“noise-sensitivity” gint
Noise sensisivity (frames to blur)
Flags : Read / Write
Default value : 0
overshoot
“overshoot” gint
Datarate overshoot (max) target (%%)
Flags : Read / Write
Default value : 100
resize-allowed
“resize-allowed” gboolean
Allow spatial resampling
Flags : Read / Write
Default value : false
resize-down-threshold
“resize-down-threshold” gint
Downscale threshold (buf %%)
Flags : Read / Write
Default value : 60
resize-up-threshold
“resize-up-threshold” gint
Upscale threshold (buf %%)
Flags : Read / Write
Default value : 30
static-threshold
“static-threshold” gint
Motion detection threshold. Recommendation is to set 100 for screen/window sharing
Flags : Read / Write
Default value : 1
target-bitrate
“target-bitrate” gint
Target bitrate (in bits/sec) (0: auto - bitrate depends on resolution, see "bits-per-pixel" property for more info)
Flags : Read / Write
Default value : 0
temporal-scalability-layer-flags
“temporal-scalability-layer-flags” GstValueArray *
Sequence defining coding layer flags
Flags : Read / Write
Since : 1.20
temporal-scalability-layer-id
“temporal-scalability-layer-id” GValueArray *
Sequence defining coding layer membership
Flags : Read / Write
temporal-scalability-layer-sync-flags
“temporal-scalability-layer-sync-flags” GstValueArray *
Sequence defining coding layer sync flags
Flags : Read / Write
Since : 1.20
temporal-scalability-number-layers
“temporal-scalability-number-layers” gint
Number of coding layers to use
Flags : Read / Write
Default value : 1
temporal-scalability-periodicity
“temporal-scalability-periodicity” gint
Length of sequence that defines layer membership periodicity
Flags : Read / Write
Default value : 0
temporal-scalability-rate-decimator
“temporal-scalability-rate-decimator” GValueArray *
Rate decimation factors for each layer
Flags : Read / Write
temporal-scalability-target-bitrate
“temporal-scalability-target-bitrate” GValueArray *
Target bitrates (bits/sec) for coding layers (one per layer)
Flags : Read / Write
timebase
“timebase” GstFraction *
Fraction of one second that is the shortest interframe time - normally left as zero which will default to the framerate
Flags : Read / Write
Default value : 0/1
token-partitions
“token-partitions” Vpxenc-token-partitions *
Number of token partitions
Flags : Read / Write
Default value : 1 (0)
twopass-vbr-bias
“twopass-vbr-bias” gint
CBR/VBR bias (0=CBR, 100=VBR)
Flags : Read / Write
Default value : 50
twopass-vbr-maxsection
“twopass-vbr-maxsection” gint
GOP maximum bitrate (%% target)
Flags : Read / Write
Default value : 0
twopass-vbr-minsection
“twopass-vbr-minsection” gint
GOP minimum bitrate (%% target)
Flags : Read / Write
Default value : 0
undershoot
“undershoot” gint
Datarate undershoot (min) target (%%)
Flags : Read / Write
Default value : 100
vertical-scaling-mode
“vertical-scaling-mode” GstVPXEncScalingMode *
Vertical scaling mode
Flags : Read / Write
Default value : normal (0)
Named constants
Vpxenc-end-usage
Members
vbr (0) – Variable Bit Rate (VBR) mode
cbr (1) – Constant Bit Rate (CBR) mode
cq (2) – Constant Quality Mode (CQ) mode
Vpxenc-er-flags
Members
default (0x00000001) – Default error resilience
partitions (0x00000002) – Allow partitions to be decoded independently
Vpxenc-kf-mode
Members
auto (1) – Determine optimal placement automatically
disabled (0) – Don't automatically place keyframes
Vpxenc-multipass-mode
Members
one-pass (0) – One pass encoding (default)
first-pass (1) – First pass of multipass encoding
last-pass (2) – Last pass of multipass encoding
GstVPXEncScalingMode
Members
normal (0) – Normal
4:5 (1) – 4:5
3:5 (2) – 3:5
1:2 (3) – 1:2
Vpxenc-token-partitions
Members
1 (0) – One token partition
2 (1) – Two token partitions
4 (2) – Four token partitions
8 (3) – Eight token partitions
Vpxenc-tuning
Members
psnr (0) – Tune for PSNR
ssim (1) – Tune for SSIM
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