High Bitrate Bitstream Decoding - 2023.2 English

H.264/H.265 Video Decode Unit Solutions LogiCORE IP Product Guide (PG414)

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2023.2 English
To reduce frame decoding time for bitstreams greater than 100 Mb/s at 4kP30, use the following options:
  • Increase internal decoder buffers (internal-entropy-buffers parameter) to 9 or 10
  • Add a queue at the decoder input side
The following command decodes an H.264 MP4 file using an increased number of internal entropy buffers and displays it via HDMI.
gst-launch-1.0 filesrc location="input-file.mp4" ! qtdemux name=demux demux.video_0 ! h264parse ! queue max-size-bytes=0 ! omxh264dec internal- entropy-buffers=10 ! queue max-size-bytes=0 ! bus-id="<hdmi-bus-id>" fullscreen-overlay=1