avfilter has a dependency on postproc which is gone in ffmpeg 8.0

[iejeecee]

In FFmpeg.AutoGen.Bindings.DynamicallyLoaded.FunctionResolverBase there is this dictionary

    public static readonly Dictionary<string, string[]> LibraryDependenciesMap =
        new()
        {
            { "avcodec", new[] { "avutil", "swresample" } },
            { "avdevice", new[] { "avcodec", "avfilter", "avformat", "avutil" } },
            { "avfilter", new[] { "avcodec", "avformat", "avutil", "postproc", "swresample", "swscale" } },
            { "avformat", new[] { "avcodec", "avutil" } },
            { "avutil", new string[0] },
            { "postproc", new[] { "avutil" } },
            { "swresample", new[] { "avutil" } },
            { "swscale", new[] { "avutil" } }
        };

Whenever you use a ffmpeg function that requires loading avfilter.dll you will get a exception because it depends on postproc.dll, which is not in ffmpeg 8.0 anymore, as it has become obsolete or depreciated (I think).

E.g. you can make the FFmpeg.AutoGen.Example crash by adding a call to ffmpeg.avdevice_register_all() for example.

Removing "postproc" as a dependency for avfilter from the dictionary will probably fix it.

[dloubser]

In FFmpeg.AutoGen.Bindings.DynamicallyLoaded.FunctionResolverBase there is this dictionary

    public static readonly Dictionary<string, string[]> LibraryDependenciesMap =
        new()
        {
            { "avcodec", new[] { "avutil", "swresample" } },
            { "avdevice", new[] { "avcodec", "avfilter", "avformat", "avutil" } },
            { "avfilter", new[] { "avcodec", "avformat", "avutil", "postproc", "swresample", "swscale" } },
            { "avformat", new[] { "avcodec", "avutil" } },
            { "avutil", new string[0] },
            { "postproc", new[] { "avutil" } },
            { "swresample", new[] { "avutil" } },
            { "swscale", new[] { "avutil" } }
        };

Whenever you use a ffmpeg function that requires loading avfilter.dll you will get a exception because it depends on postproc.dll, which is not in ffmpeg 8.0 anymore, as it has become obsolete or depreciated (I think).

E.g. you can make the FFmpeg.AutoGen.Example crash by adding a call to ffmpeg.avdevice_register_all() for example.

Removing "postproc" as a dependency for avfilter from the dictionary will probably fix it.

I am having the same issue. I need to use ffmpeg.avfilter_graph_alloc() for scaling. Is there a way around this?

[iejeecee]

Removing ^postproc" from the dictionary and compiling it myself works for me. Alternatively you could try adding postproc.dll from the previous version of ffmpeg to your dll's. Although I haven't tested that myself.

[dloubser]

Removing ^postproc" from the dictionary and compiling it myself works for me. Alternatively you could try adding postproc.dll from the previous version of ffmpeg to your dll's. Although I haven't tested that myself.

This worked, Thanks.

[Ruslan-B]

Cheers, I think time of ffmpeg is over, I had video compression working like 22 times , also works directional flow control and -
al works on rae data, apple figma other fluid UIs is already using similar things. I am not planning to release it yet kind of valuable at the moment with in few years going to be standard in c# as it includes nlp as well without huge llm overhead - runs works local.
Fast like a hell if optimized can run on arduino an also gives interference - it is xor chaos to order. Like I said I see no point to evolve this projects but will do fixes from time to time - this code kind works in many places. Basics on my company website if you in quantize analysis you better looks and ask any gpt - it is same stuff like intersteral movie.