Using system ffmpeg/compiling ffmpeg with custom flags

[Lander Noterman]

Hi!

For my project I am currently in the process of adding a hardware H264 encoder for the Raspberry Pi in WebRTC.

My plan was to use FFmpeg to provide an easy to use interface to the hardware accelerated encoder, but I have noticed that the WebRTC source includes the ffmpeg source in the third_party folder.

The "Chrome"-branded build does not include the h264_omx encoder I need (or any encoders, it seems).

At this point, I can see two solutions:

1. Adapt the build system to build ffmpeg with the required encoder (I would need to add the flags --enable-gpl --enable-omx --enable-omx-rpi --enable-nonfree)

2. Ditch the included ffmpeg entirely and use the system libraries (I have the correct ffmpeg build installed, i.e. ffmpeg -encoders displays the h264_omx encoder I need).

What would be the easiest/preferred solution and how would I do it?

Thanks!

[李晓帆]

Hi this topic may be some help.

https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!starred/discuss-webrtc/nlTlEdXQi24

Lander Noterman <lander....@gmail.com> 于2018年9月19日周三 上午1:42写道：

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[Lander Noterman]

Hi! Thanks for the help, however, executing python chromium/scripts/build_ffmpeg.py linux arm-neon results in:

Traceback (most recent call last):

  File "chromium/scripts/build_ffmpeg.py", line 21, in <module>

    import gn_helpers

ImportError: No module named gn_helpers

I have cloned the webrtc repo and have depot_tools in my PATH. How to make gn_helpers available?

Op woensdag 19 september 2018 04:48:31 UTC+2 schreef Wesley: