Chrome built FFMPEG avformat_open_input PROTOCOL NOT FOUND

[Michael IV]

Hi people.

I built WebRTC repo with CHROME ffmpeg.

Here  are my args:

--args="ffmpeg_branding=\"Chrome\" rtc_initialize_ffmpeg=true  rtc_use_h264=true  proprietary_codecs=true is_debug=true target_cpu=\"x64\" symbol_level=2 use_rtti=true msvc_use_absolute_paths=true is_win_fastlink=true enable_nacl=false disable_libfuzzer=true"

Now,the thing is that I am trying to use avformat_open_input  and it always gives me "Protocol not found" error:

Here is the code

       avcodec_register_all();

       av_register_all();

       avformat_network_init();

         AVDictionary *d = NULL;

av_dict_set(&d, "protocol_whitelist","file,udp,tcp,rtp,rtsp", 0);

       int ret = avformat_open_input(&pFormatCtx, in_f_name , NULL, &d);

So  do init all the codecs and formats correctly. I also tried to leave only one of those prtocols in the

dictionary- same issue. All those protocols are supported by ffmpeg.

Do I miss some build arg to enable this stuff ? 

Thanks.

[Dale Curtis]

Chrome's ffmpeg does not allow any of those protocols, if you want to enable them you'll have to rebuild and reconfigure Chrome's copy of ffmpeg.

- dale

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[Michael IV]

That's exactly what I need  .How do I define those features via cmd or some build script file?  

[Dale Curtis]

You'll have to figure out how to generate them using ffmpeg's ./configure (for all the platforms you're targeting) then run ./chromium/scripts/copy_config and ./chromium/scripts/generate_gn -- if you're lucky this will just work, but you'll then likely have a bunch of issues to fix with BUILD.gn. Good luck.

- dale

[Michael IV]

Thanks for the tip. It was a nightmare but now I got the full FFMPEG working :_)