tune x264enc for RAM usage

[Yakov Sudeikin]

Hi everyone,

Any experience with tuning x264enc to lower it's RAM consumption? I get
about 1.5 GB for live video streaming. I would like to cut it down to
something like 500 MB. But the description of options I get with
gst-inspect is only mystifying.

I was thinking to tweak multipass-cache-file, threads and others. But there
are so many, experimenting could take days.

My stream options:
  "width": 1280,
  "height": 720,
  "framerate": 20,
  "video_bitrate": 256,

I am not 100% sure it is x264enc, but what else could that be taking 1.5 GB
RAM? If you have time to take a look, I attach the dot file from the
process that causes this issue.

Thank you,
Yakov
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