mfh264enc

This element encodes raw video into H264 compressed data.

Example pipelines

 gst-launch-1.0 -v videotestsrc ! mfh264enc ! h264parse ! qtmux ! filesink location=videotestsrc.mp4

This example pipeline will encode a test video source to H264 using Media Foundation encoder, and muxes it in a mp4 container.

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstVideoEncoder
                    ╰──GstMFVideoEnc
                        ╰──mfh264enc

Implemented interfaces

Factory details

Authors: – Seungha Yang

Classification:Codec/Encoder/Video/Hardware

Rank – secondary

Plugin – mediafoundation

Package – GStreamer Bad Plug-ins

Pad Templates

sink

video/x-raw:
         format: { NV12, BGRA }
          width: [ 64, 8192 ]
         height: [ 64, 8192 ]

Presencealways

Directionsink

Object typeGstPad


src

video/x-h264:
  stream-format: byte-stream
      alignment: au
        profile: { (string)high, (string)main, (string)baseline }
          width: [ 64, 8192 ]
         height: [ 64, 8192 ]

Presencealways

Directionsrc

Object typeGstPad


Properties

bframes

“bframes” guint

The maximum number of consecutive B frames

Flags : Read / Write

Default value : 0


bitrate

“bitrate” guint

Bitrate in kbit/sec

Flags : Read / Write

Default value : 2048


cabac

“cabac” gboolean

Enable CABAC entropy coding

Flags : Read / Write

Default value : true


gop-size

“gop-size” guint

The number of pictures from one GOP header to the next, (0 = MFT default)

Flags : Read / Write

Default value : 0


low-latency

“low-latency” gboolean

Enable low latency encoding

Flags : Read / Write

Default value : false


max-bitrate

“max-bitrate” guint

The maximum bitrate applied when rc-mode is "pcvbr" in kbit/sec

Flags : Read / Write

Default value : 0


qp

“qp” guint

QP applied when rc-mode is "qvbr"

Flags : Read / Write

Default value : 24


qp-b

“qp-b” guint

QP applied to B frames

Flags : Read / Write

Default value : 26


qp-i

“qp-i” guint

QP applied to I frames

Flags : Read / Write

Default value : 26


qp-p

“qp-p” guint

QP applied to P frames

Flags : Read / Write

Default value : 26


quality-vs-speed

“quality-vs-speed” guint

Quality and speed tradeoff, [0, 33]: Low complexity, [34, 66]: Medium complexity, [67, 100]: High complexity

Flags : Read / Write

Default value : 50


rc-mode

“rc-mode” Mfh264enc-rcmode *

Rate Control Mode

Flags : Read / Write

Default value : uvbr (2)


ref

“ref” guint

The number of reference frames

Flags : Read / Write

Default value : 2


vbv-buffer-size

“vbv-buffer-size” guint

VBV(HRD) Buffer Size in bytes (0 = MFT default)

Flags : Read / Write

Default value : 0


Named constants

Mfh264enc-rcmode

Members

cbr (0) – Constant bitrate
pcvbr (1) – Peak Constrained variable bitrate
uvbr (2) – Unconstrained variable bitrate
qvbr (3) – Quality-based variable bitrate

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