134 lines
4.6 KiB
Plaintext
134 lines
4.6 KiB
Plaintext
|
|
||
|
|
gstreamer-vaapi
|
||
|
|
VA-API support to GStreamer
|
||
|
|
|
||
|
|
Copyright (C) 2010-2011 Splitted-Desktop Systems
|
||
|
|
Copyright (C) 2011-2020 Intel Corporation
|
||
|
|
Copyright (C) 2011 Collabora Ltd.
|
||
|
|
Copyright (C) 2015-2020 Igalia, S.L.
|
||
|
|
|
||
|
|
|
||
|
|
License
|
||
|
|
-------
|
||
|
|
|
||
|
|
gstreamer-vaapi helper libraries and plugin elements are available
|
||
|
|
under the terms of the GNU Lesser General Public License v2.1+
|
||
|
|
|
||
|
|
|
||
|
|
Overview
|
||
|
|
--------
|
||
|
|
|
||
|
|
gstreamer-vaapi consists in a collection of VA-API based plugins for
|
||
|
|
GStreamer and helper libraries.
|
||
|
|
|
||
|
|
* `vaapi<CODEC>dec' is used to decode JPEG, MPEG-2, MPEG-4:2, H.264
|
||
|
|
AVC, H.264 MVC, VP8, VP9, VC-1, WMV3, HEVC videos to VA surfaces,
|
||
|
|
depending on the actual value of <CODEC> and the underlying
|
||
|
|
hardware capabilities. This plugin is also able to implicitly
|
||
|
|
download the decoded surface to raw YUV buffers.
|
||
|
|
|
||
|
|
* `vaapi<CODEC>enc' is used to encode into MPEG-2, H.264 AVC, H.264
|
||
|
|
MVC, JPEG, VP8, VP9, HEVC videos, depending on the actual value of
|
||
|
|
<CODEC> (mpeg2, h264, etc.) and the hardware capabilities. By
|
||
|
|
default, raw format bitstreams are generated, so the result may be
|
||
|
|
piped to a muxer, e.g. qtmux for MP4 containers.
|
||
|
|
|
||
|
|
* `vaapipostproc' is used to filter VA surfaces, for e.g. scaling,
|
||
|
|
deinterlacing (bob, motion-adaptive, motion-compensated), noise
|
||
|
|
reduction or sharpening. This plugin is also used to upload raw
|
||
|
|
YUV pixels into VA surfaces.
|
||
|
|
|
||
|
|
* `vaapisink' is used to render VA surfaces to an X11 or Wayland
|
||
|
|
display. This plugin also features a "headless" mode (DRM) more
|
||
|
|
suited to remote transcode scenarios, with faster throughput.
|
||
|
|
|
||
|
|
* `vaapioverlay` is a accelerated compositor that blends or
|
||
|
|
composite different video streams.
|
||
|
|
|
||
|
|
|
||
|
|
Features
|
||
|
|
--------
|
||
|
|
|
||
|
|
* VA-API support from 0.39
|
||
|
|
* JPEG, MPEG-2, MPEG-4, H.264 AVC, H.264 MVC, VP8, VC-1, HEVC and
|
||
|
|
VP9 ad-hoc decoders
|
||
|
|
* MPEG-2, H.264 AVC,H.264 MVC, JPEG, VP8, VP9 and HEVC ad-hoc
|
||
|
|
encoders
|
||
|
|
* OpenGL rendering through VA/GLX or GLX texture-from-pixmap + FBO
|
||
|
|
* Support for EGL backend
|
||
|
|
* Support for the Wayland display server
|
||
|
|
* Support for headless decode pipelines with VA/DRM
|
||
|
|
* Support for major HW video decoding solutions on Linux (AMD,
|
||
|
|
Intel, NVIDIA)
|
||
|
|
* Support for HW video encoding on Intel HD Graphics hardware
|
||
|
|
* Support for VA Video Processing APIs (VA/VPP)
|
||
|
|
- Scaling and color conversion
|
||
|
|
- Image enhancement filters: Sharpening, Noise Reductio, Color
|
||
|
|
Balance, Skin-Tone-Enhancement
|
||
|
|
- Advanced deinterlacing: Motion-Adaptive, Motion-Compensated
|
||
|
|
|
||
|
|
|
||
|
|
Requirements
|
||
|
|
------------
|
||
|
|
|
||
|
|
Hardware requirements
|
||
|
|
|
||
|
|
* Hardware supported by i965 driver or iHD, such as
|
||
|
|
- Intel Ironlake, Sandybridge, Ivybridge, Haswell, Broadwell,
|
||
|
|
Skylake, etc. (HD Graphics)
|
||
|
|
- Intel BayTrail, Braswell
|
||
|
|
- Intel Poulsbo (US15W)
|
||
|
|
- Intel Medfield or Cedar Trail
|
||
|
|
* Hardware supported by AMD Radeonsi driver, such as the list below
|
||
|
|
- AMD Carrizo, Bristol Ridge, Raven Ridge, Picasso, Renoir
|
||
|
|
- AMD Tonga, Fiji, Polaris XX, Vega XX, Navi 1X
|
||
|
|
* Other hardware supported by Mesa VA gallium state-tracker
|
||
|
|
|
||
|
|
|
||
|
|
Usage
|
||
|
|
-----
|
||
|
|
|
||
|
|
VA elements are automatically plugged into GStreamer pipelines. So,
|
||
|
|
using playbin should work as is.
|
||
|
|
However, here are a few alternate pipelines that could be manually
|
||
|
|
constructed.
|
||
|
|
|
||
|
|
* Play an H.264 video with an MP4 container in fullscreen mode
|
||
|
|
$ gst-launch-1.0 -v filesrc location=/path/to/video.mp4 ! \
|
||
|
|
qtdemux ! vaapidecodebin ! vaapisink fullscreen=true
|
||
|
|
|
||
|
|
* Play a raw MPEG-2 interlaced stream
|
||
|
|
$ gst-launch-1.0 -v filesrc location=/path/to/mpeg2.bits ! \
|
||
|
|
mpegvideoparse ! vaapimpeg2dec ! vaapipostproc ! vaapisink
|
||
|
|
|
||
|
|
* Convert from one pixel format to another, while also downscaling
|
||
|
|
$ gst-launch-1.0 -v filesrc location=/path/to/raw_video.yuv ! \
|
||
|
|
videoparse format=yuy2 width=1280 height=720 ! \
|
||
|
|
vaapipostproc format=nv12 height=480 ! vaapisink
|
||
|
|
|
||
|
|
* Encode a 1080p stream in raw I420 format into H.264
|
||
|
|
$ gst-launch-1.0 -v filesrc location=/path/to/raw_video.yuv ! \
|
||
|
|
videoparse format=i420 width=1920 height=1080 framerate=30/1 ! \
|
||
|
|
vaapih264enc rate-control=cbr tune=high-compression ! \
|
||
|
|
qtmux ! filesink location=/path/to/encoded_video.mp4
|
||
|
|
|
||
|
|
|
||
|
|
Sources
|
||
|
|
-------
|
||
|
|
|
||
|
|
gstreamer-vaapi is Open Source software, so updates to this
|
||
|
|
framework are really easy to get.
|
||
|
|
|
||
|
|
Stable source code releases can be found at:
|
||
|
|
<https://gstreamer.freedesktop.org/src/gstreamer-vaapi/>
|
||
|
|
|
||
|
|
GitLab repository for work-in-progress changes is available at:
|
||
|
|
<https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi>
|
||
|
|
|
||
|
|
|
||
|
|
Reporting Bugs
|
||
|
|
--------------
|
||
|
|
|
||
|
|
Bugs can be reported in the GStreamer's GitLab system at:
|
||
|
|
<https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi/issues>
|