• 07/14/2017
  • Public Content
Contents

Video

The onboard graphics acceleration hardware is capable of accelerating video encoding and decoding tasks. This functionality is exposed from the Video Acceleration API (vaapi) and the gstreamer-vaapi plugins.
Transcoding
T
ranscoding is
the process of taking a media file or stream and converting it to a different format or bitrate; f
or instance, the module can convert a video captured in H.264 (AVC) to H.265 (HEVC).
Display video codecs with vaapi support:
gst-inspect-1.0 | grep vaapi
Display additional information for a codec using the inspect command:
gst-inspect-1.0 vaapih264dec
The gst-inspect-1.0 can be followed by other codecs to get the related parameters.
See viewing captured content for a few examples on how to playback video content.
Transcode video from one encoded format to another using this command:
gst-launch-1.0 -e filesrc location=test.mp4 ! decodebin ! videoscale ! 'video/x-raw,width=640,height=480' ! vaapih264enc tune=low-power !
 
h264parse !
mp4mux ! queue ! filesink location=scaled.mp4
Measure pure video decoding + encoding performance:
gst-launch-1.0 filesrc location=test.mp4 ! qtdemux ! queue ! h264parse ! vaapih264dec ! queue ! vaapipostproc ! vaapih264enc tune=low-power ! fpsdisplaysink text-overlay=false video-sink="fakesink sync=false" fps-update-interval=1000 sync=false
 

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.