FFmpeg binaries are built disabling some avdevices such as x11grab and avfoundation

[robertoandrade]

From what I could gather ffmpeg builds automatically include x11grab and avfoundation devices (Trying to invoke the libs to replicate the following examples) and I'm wondering what in particular in the presets' build script makes it so those are not included? I noticed you guys build it with --disable-libxcb, is that what causes these components not to be included?

[robertoandrade]

After building 0.11-SNAPSHOT (with ffmpeg 2.5.4) I was able to call into the ffmpeg functions on my Mac running OSX and pass in format=avfoundation and it worked just fine. So I guess this was only a problem on the stable 0.10 release. Trying to recompile it on linux to confirm x11grab is accessible too.

[saudet]

Thanks for the feedback! Maybe it's just my build environment that don't have the right files installed... I'll have to check that out. But that might not be that important, because eventually, I'd like to move the builds to Travis CI. Would you have any experience or interest in trying this out?

[robertoandrade]

Yeah for linux it doesn't get included, I need to remove the --disable-libxcb in order to bake it in and in my tests also included the --enable-x11grab.

[saudet]

This should all be fixed with the -0.11 release. Let me know if you still have problems! Thanks for reporting.

[artpej]

It seems that avfoundation input device is not really enabled. I think it is due to this issue : https://trac.ffmpeg.org/ticket/3570 .

[saudet]

It still doesn't work with version 0.11??

[artpej]

There's no problem on Linux with x11grab, but on my OSX Mavericks avfoundation seems not works:

public class Devices {
  public static void main(String[] args){
    avdevice_register_all();
    avcodec_register_all();
    av_register_all();
    System.err.println(avdevice.avdevice_configuration().getString());
    AVInputFormat fmt = null;
    while ((fmt = av_input_video_device_next(fmt)) != null) {
      System.err.println("format : " + fmt.name().getString() + " (" + fmt.long_name().getString() + ")");
    }
  }
}

I tried multiple ways to find the avfoundation device but nothing works.

For exemple:

AVInputFormat fmt = av_find_input_format("avfoundation");

here fmt is always ǹull.

The version i use is 2.6.1-0.11:

        <dependency>
            <groupId>org.bytedeco.javacpp-presets</groupId>
            <artifactId>ffmpeg</artifactId>
            <version>2.6.1-0.11</version>
            <classifier>macosx-x86_64</classifier>
        </dependency>  
`̀`

[saudet]

@artpej Could you try to rebuild the binaries on your machine to see if that changes anything? Thanks!

[artpej]

All right, after rebuilding the binaries from the master on my machine everything works well.

I don't do anything special:

• brew install yasm
• sh cppbuild.sh -platform macosx-x86_64 install ffmpeg
• mvn install -projects .,ffmpeg

Hope this will help.
Tks

[saudet]

So I guess it's a problem with my build environment...

Incidentally, I would like to, for example, make the build process more automated via a cloud solution. I'm aware of Travis CI, and I believe they support builds for Mac OS X. Is this something you would be interested in helping out to set up? It would help a lot!!