How to enable H264 support in CEF3 latest version ?

Question

I have known that cef3's older version like 2623 can enable H264 support through modify chromium\src\cef\cef.gypi file. But in recent versions like 3071 or 3029, cef3 has removed cef.gypi file. I have googled this, but what I found is still through modify the cef.gypi file. Since this methold is only valid for older versions. Is there another way that I can make newer version enable H264 support ? Thanks very much!

Answer 1

Indeed the compile option to support proprietary codecs was moved.

the magic now happens here:

set GN_DEFINES=is_official_build=true proprietary_codecs=true ffmpeg_branding=Chrome

there is 2 batch files that you should update/create (as found here):

c:\code\chromium_git\update.bat:

set CEF_USE_GN=1
set GN_DEFINES=is_official_build=true proprietary_codecs=true ffmpeg_branding=Chrome
set GN_ARGUMENTS=--ide=vs2015 --sln=cef --filters=//cef/*
python ..\automate\automate-git.py --download-dir=C:\code\chromium_git --depot-tools-dir=C:\code\depot_tools --no-distrib --no-build

c:\code\chromium_git\chromium\src\cef\create.bat:

set CEF_USE_GN=1
set GN_DEFINES=is_win_fastlink=true proprietary_codecs=true ffmpeg_branding=Chrome
set GN_ARGUMENTS=--ide=vs2015 --sln=cef --filters=//cef/*
call cef_create_projects.bat

There is 2 wiki articles that explain how to build CEF/Chromium:

1. https://bitbucket.org/chromiumembedded/cef/wiki/MasterBuildQuickStart.md
2. and BranchesAndBuilding in the same wiki

---

Update: Here are more links with infos on Chromium build flags:

https://www.chromium.org/developers/gn-build-configuration
https://www.chromium.org/audio-video
https://chromium.googlesource.com/chromium/src/+/lkcr/docs/windows_build_instructions.md

... GYP/GN flags which can alter behaviour of Chromium's HTML5 audio/video implementation.

ffmpeg_branding
  Overrides which version of FFmpeg to use
  Default: $(branding)
  Values:
    Chrome - includes additional proprietary codecs (MP3, etc..) for use with Google Chrome
    Chromium - builds default set of codecs

proprietary_codecs
  Alters the list of codecs Chromium claims to support, which affects <source> and canPlayType() behaviour
  Default: 0(gyp)/false(gn)
  Values:
    0/false - <source> and canPlayType() assume the default set of codecs
    1/true - <source> and canPlayType() assume they support additional proprietary codecs