Custom x264 parameters

[Joel Sutherland]

I’d like to modify the parameters used when invoking the x264 video codec used by my Electron app. Do I need to custom-build Chromium to set these, and can someone point me in the right direction?

Thanks!

[Chris Cunningham]

If you're needing to change the ./configure options, you'll need to adjust the build_ffmpeg.py script, re-run it, and re-run other scripts we have (described here) to convert the "make" output into chrome's GN build system. Warning: Its a lot of steps.

If you just need to supply some runtime codec flags, you can do that in our ffmpeg_video_decoder wrapper prior to calling avcodec_open2(...). Example of that in our audio wrapper.

Good luck. Sorry I won't be able to offer much more - super busy. 

On Mon, May 21, 2018 at 8:59 AM, Joel Sutherland <jdsuth...@gmail.com> wrote:

I’d like to modify the parameters used when invoking the x264 video codec used by my Electron app. Do I need to custom-build Chromium to set these, and can someone point me in the right direction?

Thanks!

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[Joel Sutherland]

Hey Chris, thanks for your help.

I'm actually looking to modify the encoder (not decoder) settings. Any chance you could point me to that or give some insight?

Thanks!

[Harald Alvestrand]

Encoder work is probably better to ask about on the discuss-webrtc mailing list, since that's where the realtime folks hang out.

The answer varies depending on whether you are just tweaking encoder settings or actually negotiate a different H.264 profile.

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