Hi Guillem, On 29.06.2015 18:01, Guillem Jover wrote: > [ First of all, thanks for providing a ffmpeg version of the package, > there's quite some media that does not play correctly with libav. ]
Credits for that go to Alessandro. (We plan to transition all packages from Libav to FFmpeg soon, see [1].) > The mpv program emits the following warning on startup: > > ,--- > Warning: mpv was compiled against a different version of ffmpeg than the > shared > library it is linked against. This can expose subtle ABI compatibility issues > and can lead to misbehavior and crashes. > `--- I guess this warning is meant as sanity check for those compiling mpv themselves. (The ffmpeg binary also checks for matching compile-time and run-time libraries.) These warnings aren't very useful in a distribution, where package dependencies ensure ABI compatibility. > Which, to me points out there's a problem somewhere. Either: > > * the warning is bogus, and > - mpv should be silenced in common/av_log.c:print_libav_versions, or If the warning bothers you, this would be the way to go. > - ffmpeg should not be exposing the minor versions in its macros > and *_version() functions, so that such warnings do not trigger, or The minor versions are used to e.g. indicate new features, so that programs can do exact compile-time checks. Not exposing them would break that. > * the warning is valid, and > - mpv needs a strict versioned dependency, or The dependencies are calculated by the symbols mechanism. No stricter dependencies should be necessary. > - mpv very unfortunately needs to statically link against ffmpeg, or Not that, please! > * something else? > > I'm filing it here, because it's not clear to me where the real > problem lies. Please reassign as appropriate if need be. I think you were right to file this bug against mpv. Best regards, Andreas 1: https://wiki.debian.org/Debate/libav-provider/ffmpeg -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
