Joger, I’ve misread the documentation.
Passing /opt/homebrew/Cellar/ffmpeg/7.1/ fixes the problem. Now I will try to build Qt with FFmpeg and give it a try. Thanks! Nuno > On 16 Nov 2024, at 10:41, Nuno Santos <nuno.san...@imaginando.pt> wrote: > > Joger, > > I could only get back to this now. > > Trying to build Qt with FFmpeg. As a start point I’m point to prebuilt > libraries by brew: > > ./configure -prefix /Users/nsantos/Qt/6.8.0/macos_static_vs -static > -debug-and-release -- -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" > -DFFMPEG_DIR=/opt/homebrew/Cellar/ffmpeg/7.1/lib > > Which has: > > -r--r--r-- 1 nsantos admin 10232192 9 Out 16:07 > libavcodec.61.19.100.dylib > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libavcodec.61.dylib -> > libavcodec.61.19.100.dylib > -r--r--r-- 1 nsantos admin 14165144 30 Set 00:31 libavcodec.a > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libavcodec.dylib -> > libavcodec.61.19.100.dylib > -r--r--r-- 1 nsantos admin 206528 9 Out 16:07 > libavdevice.61.3.100.dylib > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libavdevice.61.dylib -> > libavdevice.61.3.100.dylib > -r--r--r-- 1 nsantos admin 90232 30 Set 00:31 libavdevice.a > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libavdevice.dylib -> > libavdevice.61.3.100.dylib > -r--r--r-- 1 nsantos admin 3144864 9 Out 16:07 > libavfilter.10.4.100.dylib > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libavfilter.10.dylib -> > libavfilter.10.4.100.dylib > -r--r--r-- 1 nsantos admin 5098240 30 Set 00:31 libavfilter.a > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libavfilter.dylib -> > libavfilter.10.4.100.dylib > -r--r--r-- 1 nsantos admin 2347712 9 Out 16:07 > libavformat.61.7.100.dylib > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libavformat.61.dylib -> > libavformat.61.7.100.dylib > -r--r--r-- 1 nsantos admin 4220096 30 Set 00:31 libavformat.a > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libavformat.dylib -> > libavformat.61.7.100.dylib > -r--r--r-- 1 nsantos admin 643248 9 Out 16:07 libavutil.59.39.100.dylib > lrwxr-xr-x 1 nsantos admin 25 30 Set 00:31 libavutil.59.dylib -> > libavutil.59.39.100.dylib > -r--r--r-- 1 nsantos admin 885096 30 Set 00:31 libavutil.a > lrwxr-xr-x 1 nsantos admin 25 30 Set 00:31 libavutil.dylib -> > libavutil.59.39.100.dylib > -r--r--r-- 1 nsantos admin 85872 9 Out 16:07 > libpostproc.58.3.100.dylib > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libpostproc.58.dylib -> > libpostproc.58.3.100.dylib > -r--r--r-- 1 nsantos admin 31880 30 Set 00:31 libpostproc.a > lrwxr-xr-x 1 nsantos admin 26 30 Set 00:31 libpostproc.dylib -> > libpostproc.58.3.100.dylib > -r--r--r-- 1 nsantos admin 122096 9 Out 16:07 > libswresample.5.3.100.dylib > lrwxr-xr-x 1 nsantos admin 27 30 Set 00:31 libswresample.5.dylib -> > libswresample.5.3.100.dylib > -r--r--r-- 1 nsantos admin 115792 30 Set 00:31 libswresample.a > lrwxr-xr-x 1 nsantos admin 27 30 Set 00:31 libswresample.dylib -> > libswresample.5.3.100.dylib > -r--r--r-- 1 nsantos admin 453536 9 Out 16:07 libswscale.8.3.100.dylib > lrwxr-xr-x 1 nsantos admin 24 30 Set 00:31 libswscale.8.dylib -> > libswscale.8.3.100.dylib > -r--r--r-- 1 nsantos admin 547472 30 Set 00:31 libswscale.a > lrwxr-xr-x 1 nsantos admin 24 30 Set 00:31 libswscale.dylib -> > libswscale.8.3.100.dylib > > But the pre build summary says: > > src git:(v6.8.0) ✗ cat /Users/nsantos/Qt/6.8.0/src/config.summary | grep FF > TIFF ................................... yes > FFmpeg ............................... no > FFmpeg plugin features: > > Any ideas on why it failed to include FFmpeg? > > How can I debug this? > > Thanks! > > Nuno > >> On 15 Oct 2024, at 12:31, Jøger Hansegård <joger.hanseg...@qt.io> wrote: >> >> Hi Nuno, >> >> I'm glad it helped. >> >> Yes, you can still link Qt Multimedia against a static build of FFmpeg. When >> doing so, omit -DQT_DEPLOY_FFMPEG=ON when configuring Qt. >> >> You can find details about why we recommend using the FFmpeg media backend >> at https://doc.qt.io/qt-6/qtmultimedia-index.html. In short, newer features >> are only implemented with the FFmpeg media backend, and we will only fix >> critical bugs on native backends. With critical bugs, we mean bugs that >> affect security and reliability (crashes/hangs), not performance or >> functionality bugs. We still welcome community contributions on the native >> backends. The native Android backend is already deprecated and will be >> removed with the next major Qt release. An example of a non-critical bug on >> Windows with the native backend is that QMediaPlayer does not support >> "zero-copy" transfer of textures from decoding to display. This can lead to >> frame drop when playing high-resolution video. >> >> The FFmpeg media backend is, therefore, the most future-proof choice for new >> projects. >> >> Thanks, >> Jøger >> >> -----Original Message----- >> From: Nuno Santos <nuno.san...@imaginando.pt> >> Sent: Tuesday, October 15, 2024 12:31 PM >> To: Jøger Hansegård <joger.hanseg...@qt.io> >> Cc: interestqt-project. org <interest@qt-project.org> >> Subject: Re: [Interest] Qt 6.8.0 - FFMPEG on Windows - Is it possible? >> >> Joger, >> >> Thanks for your reply. >> >> It seems that I have failed this little detail: >> >> -DQT_DEPLOY_FFMPEG=ON >> >> Also, is it possible to statically link ffmpeg to Qt? Or will we always need >> to have the dlls somewhere? >> >> One thing that I still couldn't figure out is what are the main advantages >> of using ffmpeg as backend compared with the native backends? >> >> Thank you! >> >> Best, >> >> Nuno >> >>> On 14 Oct 2024, at 17:42, Jøger Hansegård <joger.hanseg...@qt.io> wrote: >>> >>> There is also some information in the official Qt documentation; see: >>> https://doc.qt.io/qt-6/qtmultimedia-building-from-source.html >>> >>> Best regards, >>> Jøger Hansegård, >>> The Qt Company >>> >>> >>> -----Original Message----- >>> From: Interest <interest-boun...@qt-project.org> On Behalf Of Jøger >>> Hansegård via Interest >>> Sent: Monday, October 14, 2024 6:21 PM >>> To: Nuno Santos <nuno.san...@imaginando.pt>; interestqt-project. org >>> <interest@qt-project.org> >>> Subject: Re: [Interest] Qt 6.8.0 - FFMPEG on Windows - Is it possible? >>> >>> Hi Nuno, >>> >>> Yes, this is possible, and we are working on improving the documentation on >>> how to do it. In the meantime, this is one way to do it: >>> >>> 1. Download FFmpeg built with shared libraries from one of the links below. >>> 2. After unzipping the FFmpeg binaries to a suitable location, configure Qt: >>> >>> configure.bat <your normal settings> -- -DFFMPEG_DIR=<path to directory >>> containing FFmpeg include/lib/bin folders> -DQT_DEPLOY_FFMPEG=ON >>> >>> Note the double '--' that separates configure arguments from CMake >>> arguments. Once this is done, you can build Qt as usual. >>> >>> Be aware that he FFmpeg version in the link below is a GPL build. If this >>> is not suitable for you, I added a link to my unofficial wiki page that >>> describes different ways to build FFmpeg for Windows. This gives you >>> control over building FFmpeg without any GPL or non-free components. Among >>> the described options, using VCpkg is the simplest. >>> >>> Download links: >>> FFmpeg for Windows (GPL): https://ffmpeg.org/download.html#build-windows >>> (use the ones from BtbN, direct link: >>> https://github.com/BtbN/FFmpeg-Builds/releases). It contains shared >>> libraries and FFmpeg header files. >>> Building FFmpeg: >>> https://wiki.qt.io/User:Joger/Building_Qt_Multimedia_with_FFmpeg >>> >>> Thanks, >>> Jøger >>> The Qt Company >>> >>> -----Original Message----- >>> From: Interest <interest-boun...@qt-project.org> On Behalf Of Nuno Santos >>> via Interest >>> Sent: Monday, October 14, 2024 5:04 PM >>> To: interestqt-project. org <interest@qt-project.org> >>> Subject: [Interest] Qt 6.8.0 - FFMPEG on Windows - Is it possible? >>> >>> Hi, >>> >>> I do I enable FFMPEG backend on Windows? >>> >>> Is it even possible? >>> >>>> configure.bat -help >>> >>> does not have any mention to it. >>> >>> Thanks! >>> >>> Regards, >>> >>> Nuno >>> _______________________________________________ >>> Interest mailing list >>> Interest@qt-project.org >>> https://lists.qt-project.org/listinfo/interest >>> _______________________________________________ >>> Interest mailing list >>> Interest@qt-project.org >>> https://lists.qt-project.org/listinfo/interest >> > _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
