Re: [PATCH v7 0/7] MR3938: winegstreamer: Implement CLSID_CMpegVideoCodec

[YuriK7 (＠riyu12383)]

On Mon Oct  2 19:48:25 2023 +0000, Alfred Agrell wrote:
> mpegpsdemux is part of libgstmpegpsdemux.so. It's unrelated to ffmpeg,
> and it's present in Glorious-Eggroll already, nothing to do here.
> (However, it's absent from upstream Proton.)
> mpegvideoparse is in libgstvideoparsersbad.so. Likewise, this is part of
> GE but not Proton, and is not part of ffmpeg.
> avdec_mpeg2video is in libgstlibav.so, which is part of Proton - but the
> exact set of decoders it offers depends on which ffmpeg you have
> installed, and how it's configured.
> Did you rebuild ffmpeg and copy that into an existing Wine or Proton
> installation, without changing anything else? If yes, GStreamer probably
> didn't notice the update. `touch` libgstlibav.so, or delete your
> GStreamer plugin cache (probably at
> ~/.cache/gstreamer-1.0/registry.x86_64.bin or
> ~/steam/steamapps/compatdata/1234560/gstreamer-1.0/registry.x86_64.bin).
> You can also grep that registry file for avdec_mpeg2video: if that
> string is absent, then there's something wrong with your GStreamer or
> your ffmpeg, but if it does exist, the problem is on Wine's side
> (probably in this MR). (The cache is binary, but grep telling you
> whether the binary file matches is good enough.)
> Alternatively, I may simply be wrong; I've never compiled Proton, GE, or
> ffmpeg. Good call on trying mpeg2video; if it exists, it's probably
> better than plain mpegvideo.
> We built proton-ge entirely, with as you can see in the previous link, the makefile where the gst and ffmpeg build parameters are set.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/3938#note_47447