| Top |  |  |  |  | 
| gint | arnr-maxframes | Read / Write | 
| gint | arnr-strength | Read / Write | 
| gint | arnr-type | Read / Write | 
| gboolean | auto-alt-ref | Read / Write | 
| gint | buffer-initial-size | Read / Write | 
| gint | buffer-optimal-size | Read / Write | 
| gint | buffer-size | Read / Write | 
| gint | cpu-used | Read / Write | 
| gint | cq-level | Read / Write | 
| gint64 | deadline | Read / Write | 
| gint | dropframe-threshold | Read / Write | 
| GstVP8EncEndUsage | end-usage | Read / Write | 
| GstVP8EncErFlags | error-resilient | Read / Write | 
| gint | lag-in-frames | Read / Write | 
| gint | max-quantizer | Read / Write | 
| gint | min-quantizer | Read / Write | 
| gchar * | multipass-cache-file | Read / Write | 
| GstVP8EncMultipassMode | multipass-mode | Read / Write | 
| gint | noise-sensitivity | Read / Write | 
| gboolean | resize-allowed | Read / Write | 
| gint | resize-down-threshold | Read / Write | 
| gint | resize-up-threshold | Read / Write | 
| gint | sharpness | Read / Write | 
| gint | static-threshold | Read / Write | 
| gint | target-bitrate | Read / Write | 
| gint | threads | Read / Write | 
| GstVP8EncTokenPartitions | token-partitions | Read / Write | 
| GstVP8EncTuning | tuning | Read / Write | 
| GstVP8EncScalingMode | horizontal-scaling-mode | Read / Write | 
| gint | keyframe-max-dist | Read / Write | 
| GstVP8EncKfMode | keyframe-mode | Read / Write | 
| gint | max-intra-bitrate | Read / Write | 
| gint | overshoot | Read / Write | 
| GValueArray * | temporal-scalability-layer-id | Read / Write | 
| gint | temporal-scalability-number-layers | Read / Write | 
| gint | temporal-scalability-periodicity | Read / Write | 
| GValueArray * | temporal-scalability-rate-decimator | Read / Write | 
| GValueArray * | temporal-scalability-target-bitrate | Read / Write | 
| gint | twopass-vbr-bias | Read / Write | 
| gint | twopass-vbr-maxsection | Read / Write | 
| gint | twopass-vbr-minsection | Read / Write | 
| gint | undershoot | Read / Write | 
| GstVP8EncScalingMode | vertical-scaling-mode | Read / Write | 
| GstFraction | timebase | Read / Write | 
    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstVideoEncoder
                    ╰── GstVPXEnc
                        ╰── GstVP8Enc
This element encodes raw video into a VP8 stream.
VP8 is a royalty-freevideo codec maintained by Google . It's the successor of On2 VP3, which was the base of the Theora video codec.
To control the quality of the encoding, the “target-bitrate”, “min-quantizer”, “max-quantizer” or “cq-level” properties can be used. Which one is used depends on the mode selected by the “end-usage” property. See Encoder Parameters for explanation, examples for useful encoding parameters and more details on the encoding parameters.
| 1 | gst-launch-1.0 -v videotestsrc num-buffers=1000 ! vp8enc ! webmmux ! filesink location=videotestsrc.webm | 
| plugin | vpx | 
| author | David Schleef <ds@entropywave.com>, Sebastian Dröge <sebastian.droege@collabora.co.uk> | 
| class | Codec/Encoder/Video | 
“arnr-maxframes” property  “arnr-maxframes”           gint
AltRef maximum number of frames.
Flags: Read / Write
Allowed values: [0,15]
Default value: 0
“arnr-strength” property  “arnr-strength”            gint
AltRef strength.
Flags: Read / Write
Allowed values: [0,6]
Default value: 3
“arnr-type” property  “arnr-type”                gint
AltRef type.
Flags: Read / Write
Allowed values: [1,3]
Default value: 3
“auto-alt-ref” property  “auto-alt-ref”             gboolean
Automatically generate AltRef frames.
Flags: Read / Write
Default value: FALSE
“buffer-initial-size” property  “buffer-initial-size”      gint
Initial client buffer size (ms).
Flags: Read / Write
Allowed values: >= 0
Default value: 4000
“buffer-optimal-size” property  “buffer-optimal-size”      gint
Optimal client buffer size (ms).
Flags: Read / Write
Allowed values: >= 0
Default value: 5000
“buffer-size” property  “buffer-size”              gint
Client buffer size (ms).
Flags: Read / Write
Allowed values: >= 0
Default value: 6000
“cpu-used” property  “cpu-used”                 gint
CPU used.
Flags: Read / Write
Allowed values: [-16,16]
Default value: 0
“cq-level” property  “cq-level”                 gint
Constrained quality level.
Flags: Read / Write
Allowed values: [0,63]
Default value: 10
“deadline” property  “deadline”                 gint64
Deadline per frame (usec, 0=disabled).
Flags: Read / Write
Allowed values: >= 0
Default value: 0
“dropframe-threshold” property  “dropframe-threshold”      gint
Temporal resampling threshold (buf %).
Flags: Read / Write
Allowed values: [0,100]
Default value: 0
“end-usage” property  “end-usage”                GstVP8EncEndUsage
Rate control mode.
Flags: Read / Write
Default value: Variable Bit Rate (VBR) mode
“error-resilient” property  “error-resilient”          GstVP8EncErFlags
Error resilience flags.
Flags: Read / Write
“lag-in-frames” property  “lag-in-frames”            gint
Maximum number of frames to lag.
Flags: Read / Write
Allowed values: [0,25]
Default value: 0
“max-quantizer” property  “max-quantizer”            gint
Maximum Quantizer (worst).
Flags: Read / Write
Allowed values: [0,63]
Default value: 63
“min-quantizer” property  “min-quantizer”            gint
Minimum Quantizer (best).
Flags: Read / Write
Allowed values: [0,63]
Default value: 4
“multipass-cache-file” property  “multipass-cache-file”     gchar *
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” property  “multipass-mode”           GstVP8EncMultipassMode
Multipass encode mode.
Flags: Read / Write
Default value: One pass encoding (default)
“noise-sensitivity” property  “noise-sensitivity”        gint
Noise sensisivity (frames to blur).
Flags: Read / Write
Allowed values: [0,6]
Default value: 0
“resize-allowed” property  “resize-allowed”           gboolean
Allow spatial resampling.
Flags: Read / Write
Default value: FALSE
“resize-down-threshold” property  “resize-down-threshold”    gint
Downscale threshold (buf %).
Flags: Read / Write
Allowed values: [0,100]
Default value: 60
“resize-up-threshold” property  “resize-up-threshold”      gint
Upscale threshold (buf %).
Flags: Read / Write
Allowed values: [0,100]
Default value: 30
“sharpness” property  “sharpness”                gint
Filter sharpness.
Flags: Read / Write
Allowed values: [0,7]
Default value: 0
“static-threshold” property  “static-threshold”         gint
Motion detection threshold.
Flags: Read / Write
Allowed values: >= 0
Default value: 0
“target-bitrate” property  “target-bitrate”           gint
Target bitrate (in bits/sec).
Flags: Read / Write
Allowed values: >= 0
Default value: 256000
“threads” property  “threads”                  gint
Number of threads to use.
Flags: Read / Write
Allowed values: [0,64]
Default value: 0
“token-partitions” property  “token-partitions”         GstVP8EncTokenPartitions
Number of token partitions.
Flags: Read / Write
Default value: One token partition
“tuning” property  “tuning”                   GstVP8EncTuning
Tuning.
Flags: Read / Write
Default value: Tune for PSNR
“horizontal-scaling-mode” property  “horizontal-scaling-mode”  GstVP8EncScalingMode
Horizontal scaling mode.
Flags: Read / Write
Default value: Normal
“keyframe-max-dist” property  “keyframe-max-dist”        gint
Maximum distance between keyframes (number of frames).
Flags: Read / Write
Allowed values: >= 0
Default value: 128
“keyframe-mode” property  “keyframe-mode”            GstVP8EncKfMode
Keyframe placement.
Flags: Read / Write
Default value: Determine optimal placement automatically
“max-intra-bitrate” property  “max-intra-bitrate”        gint
Maximum Intra frame bitrate.
Flags: Read / Write
Allowed values: >= 0
Default value: 0
“overshoot” property  “overshoot”                gint
Datarate overshoot (max) target (%).
Flags: Read / Write
Allowed values: [0,1000]
Default value: 100
“temporal-scalability-layer-id” property  “temporal-scalability-layer-id” GValueArray *
Sequence defining coding layer membership.
Flags: Read / Write
“temporal-scalability-number-layers” property  “temporal-scalability-number-layers” gint
Number of coding layers to use.
Flags: Read / Write
Allowed values: [1,5]
Default value: 1
“temporal-scalability-periodicity” property  “temporal-scalability-periodicity” gint
Length of sequence that defines layer membership periodicity.
Flags: Read / Write
Allowed values: [0,16]
Default value: 0
“temporal-scalability-rate-decimator” property  “temporal-scalability-rate-decimator” GValueArray *
Rate decimation factors for each layer.
Flags: Read / Write
“temporal-scalability-target-bitrate” property  “temporal-scalability-target-bitrate” GValueArray *
Target bitrates for coding layers (one per layer, decreasing).
Flags: Read / Write
“twopass-vbr-bias” property  “twopass-vbr-bias”         gint
CBR/VBR bias (0=CBR, 100=VBR).
Flags: Read / Write
Allowed values: [0,100]
Default value: 50
“twopass-vbr-maxsection” property  “twopass-vbr-maxsection”   gint
GOP maximum bitrate (% target).
Flags: Read / Write
Allowed values: >= 0
Default value: 0
“twopass-vbr-minsection” property  “twopass-vbr-minsection”   gint
GOP minimum bitrate (% target).
Flags: Read / Write
Allowed values: >= 0
Default value: 0
“undershoot” property  “undershoot”               gint
Datarate undershoot (min) target (%).
Flags: Read / Write
Allowed values: [0,1000]
Default value: 100
“vertical-scaling-mode” property  “vertical-scaling-mode”    GstVP8EncScalingMode
Vertical scaling mode.
Flags: Read / Write
Default value: Normal