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146 lines
5 KiB
Text
146 lines
5 KiB
Text
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gstreamer-vaapi
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VA-API support to GStreamer
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Copyright (C) 2010-2011 Splitted-Desktop Systems
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Copyright (C) 2011-2014 Intel Corporation
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Copyright (C) 2011 Collabora Ltd.
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License
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-------
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gstreamer-vaapi helper libraries and plugin elements are available
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under the terms of the GNU Lesser General Public License v2.1+
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Overview
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--------
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gstreamer-vaapi consists in a collection of VA-API based plugins for
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GStreamer and helper libraries.
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* `vaapidecode' is used to decode JPEG, MPEG-2, MPEG-4:2, H.264 AVC,
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H.264 MVC, VP8, VC-1, WMV3 videos to VA surfaces, depending on the
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underlying hardware capabilities. This plugin is also able to
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implicitly download the decoded surface to raw YUV buffers.
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* `vaapiencode_<CODEC>' is used to encode into MPEG-2, H.264 AVC,
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H.264 MVC videos, depending on the actual value of <CODEC> (mpeg2,
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h264, etc.). By default, raw format bitstreams are generated, so
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the result may be piped to a muxer. e.g. qtmux for MP4 containers.
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* `vaapipostproc' is used to filter VA surfaces, for e.g. scaling,
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deinterlacing (bob, motion-adaptive, motion-compensated), noise
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reduction or sharpening. This plugin is also used to upload raw
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YUV pixels into VA surfaces.
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* `vaapisink' is used to render VA surfaces to an X11 or Wayland
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display. This plugin also features a "headless" mode (DRM) more
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suited to remote transcode scenarios, with faster throughput.
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Features
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--------
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* VA-API support from 0.29 to 0.35
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* JPEG, MPEG-2, MPEG-4, H.264 AVC, H.264 MVC, VP8 and VC-1 ad-hoc decoders
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* MPEG-2, H.264 AVC and H.264 MVC ad-hoc encoders
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* OpenGL rendering through VA/GLX or GLX texture-from-pixmap + FBO
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* Support for the Wayland display server
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* Support for headless decode pipelines with VA/DRM
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* Support for major HW video decoding solutions on Linux (AMD, Intel, NVIDIA)
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* Support for HW video encoding on Intel HD Graphics hardware
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* Support for VA Video Processing APIs (VA/VPP)
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- Scaling and color conversion
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- Image enhancement filters: Sharpening, Noise Reduction
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- Advanced deinterlacing: Motion-Adaptive, Motion-Compensated
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Requirements
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------------
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Software requirements
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* GStreamer 0.10.x [DEPRECATED]:
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libglib2.0-dev (>= 2.28)
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libgstreamer0.10-dev (>= 0.10.36)
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or with GstBaseSink::query()
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libgstreamer-plugins-base0.10-dev (>= 0.10.36)
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libgstreamer-plugins-bad0.10-dev (>= 0.10.22.1)
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or with GstVideoContext, GstSurfaceBuffer, codecparsers
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Note: support for GStreamer 0.10 APIs is deprecated and will be
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removed in a future release.
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* GStreamer 1.0.x (up to including GStreamer 1.4):
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libglib2.0-dev (>= 2.28)
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libgstreamer1.0-dev (>= 1.0.0)
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libgstreamer-plugins-base1.0-dev (>= 1.0.0)
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libgstreamer-plugins-bad1.0-dev (>= 1.0.0)
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* Renderers:
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DRM: libva-dev (>= 1.1.0), libdrm-dev, libudev-dev
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X11: libva-dev (>= 1.0.1)
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GLX: libva-dev (>= 1.0.3)
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Wayland: libva-dev (>= 1.1.0), libwayland-dev (>= 0.95.0)
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Hardware requirements
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* AMD platforms with UVD2 (XvBA supported)
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* Intel Eaglelake (G45)
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* Intel Ironlake, Sandybridge, Ivybridge and Haswell (HD Graphics)
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* Intel Poulsbo (US15W)
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* Intel Medfield or Cedar Trail
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* NVIDIA platforms with PureVideo (VDPAU supported)
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Usage
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-----
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VA elements are automatically plugged into GStreamer pipelines. So,
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using playbin (or playbin2 with GStreamer 0.10) should work as is.
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However, here are a few alternate pipelines that could be manually
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constructed.
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* Play an H.264 video with an MP4 container in fullscreen mode
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$ gst-launch-1.0 -v filesrc location=/path/to/video.mp4 ! \
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qtdemux ! vaapidecode ! vaapisink fullscreen=true
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* Play a raw MPEG-2 interlaced stream
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$ gst-launch-1.0 -v filesrc location=/path/to/mpeg2.bits ! \
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mpegvideoparse ! vaapidecode ! vaapipostproc ! vaapisink
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* Convert from one pixel format to another, while also downscaling
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$ gst-launch-1.0 -v filesrc location=/path/to/raw_video.yuv ! \
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videoparse format=yuy2 width=1280 height=720 ! \
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vaapipostproc format=nv12 height=480 ! vaapisink
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* Encode a 1080p stream in raw I420 format into H.264
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$ gst-launch-1.0 -v filesrc location=/path/to/raw_video.yuv ! \
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videoparse format=i420 width=1920 height=1080 framerate=30/1 ! \
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vaapiencode_h264 rate-control=cbr tune=high-compression ! \
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qtmux ! filesink location=/path/to/encoded_video.mp4
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Sources
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-------
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gstreamer-vaapi is Open Source software, so updates to this
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framework are really easy to get.
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Stable source code releases can be found at:
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<http://www.freedesktop.org/software/vaapi/releases/gstreamer-vaapi/>
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Git repository for work-in-progress changes is available at:
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<https://github.com/01org/gstreamer-vaapi>
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Reporting Bugs
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--------------
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Bugs can be reported in the GNOME Bugzilla system at:
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<https://bugzilla.gnome.org/enter_bug.cgi?product=gstreamer-vaapi>
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From the main page, new bugs can be reported through New -> Other ->
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gstreamer-vaapi product.
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