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AM5728: GStreamer H.264 decode speed

Raymond Walter
Prodigy 20 points
Part Number: AM5728

Hello,

Is there a way to decode my input file faster than the Input framerate? I want to check the IVAHD for performance and see how fast I can decode a 1080p H264 stream.
Ideally I'd want to write to a filesink. The command I've tried so far was:

gst-launch-1.0 -v filesrc Location=bbb_sunflower_1080p_60fps_normal.mp4 ! qtdemux ! h264parse ! ducatih264dec ! filesink Location=/run/media/mmcblk0p3/test sync=FALSE

Setting sync to FALSE didn't help.

Best Regards
Raymond

  • 0
    TI__Guru**** 393215 points
    Hi,

    The software team have been notified. They will respond here.
  • 0
    TI__Guru* 80190 points
    Hello,

    What you mean sync=false does not help?
    When sync is FALSE, incoming samples will be played as fast as possible.
    What is the input fps and resolution and what you observe on the output?

    You could try to decode h264 elementary stream.

    BR
    Margarita
  • 0 in reply to Margarita Gashova
    TI__Guru* 80190 points
    Hello,

    If your input is 1920x1080@60 please check this thread(rogerio's answer):
    e2e.ti.com/.../1903578

    BR
    Margarita
  • 0 in reply to Margarita Gashova
    Prodigy 20 points

    Hey,

    Margarita Gashova said:
    What you mean sync=false does not help?


    it seems that there was another problem with my filesink resulting in a much longer decoding time.

    Tried the same thing with a fakesink using sync=false and got noticably better results.

    Margarita Gashova said:
    What is the input fps and resolution and what you observe on the output?


    The input file is 1080p@60FPS (video length is ~10 Minutes, 38040 Frames). When using the pipeline described in my original post it took much longer than the 10 minutes of the original video (cancelled it at 18min).

    Using a pipeline with a fakesink took 00:08:31, noticably faster than 60 FPS (around 74 FPS). As far as testing the maximum performance goes I'd mark this thread as resolved.

    gst-launch-1.0 -v filesrc location=bbb_sunflower_1080p_60fps_normal.mp4 ! gqtdemux ! h264parse ! ducatih264dec ! fakesink sync=false

    Thanks for your fast response!

    Best Regards
    Raymond