How to enable H264 support in CEF3 latest version ?
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问题:
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!
回答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:
... 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 and canPlayType() behaviour Default: 0(gyp)/false(gn) Values: 0/false - and canPlayType() assume the default set of codecs 1/true - and canPlayType() assume they support additional proprietary codecs
