[FFmpeg-user] Compilation of shared libraries for macOS
beautyofnorth at gmail.com
Mon Aug 3 00:31:06 EEST 2020
Thanks for your reply and I apologize that I probably posted incorrectly my
Most likely, my problem will occur with the current version of FFmpeg, too.
I tried many combinations of configure options. The problem occurs even if
I use only 1 option: --enable-shared
I'll check the location of _av_rescale_q_rnd symbol for the correct
library. I use Freepascal, not C/C++. It complicates this work.
I already checked the work of my app with dylibs downloaded from Zeranoe
website. Everything works correctly. I even successfully compiled static
FFmpeg and ffmpeg and ffplay executables work fine. The problem is only
with shared libraries.
вс, 2 авг. 2020 г. в 22:14, Carl Eugen Hoyos <ceffmpeg at gmail.com>:
> Am So., 2. Aug. 2020 um 19:40 Uhr schrieb Екатерина <
> beautyofnorth at gmail.com>:
> > I have a problem with compilation of shared libraries on macOS Catalina
> > include FFmpeg 4.3.1 dylibs for my app video for a simple video playback:
> > ./configure --prefix=/usr/local/Cellar/ffmpeg/4.3.1 --enable-shared
> > --enable-pthreads --enable-hardcoded-tables --enable-avcodec
> > --enable-avformat --enable-avresample --enable-postproc
> Unrelated to your problem:
> Most of the options above make little sense, I wonder if you need
> avresample. And I am curious: Why are you using --enable-hardcoded-tables?
> > I compile successfully all dylibs. But my app crashes when I try to open
> > any video file:
> > * Symbol not found: _av_rescale_q_rnd Referenced from:
> > Expected in: /usr/local/lib/libavcodec.58.dylib*
> This symbol is part of libavutil (since 2012), not libavcodec.
> You could test with ffmpeg (the application) first to see if your
> libraries work.
> And please remember that only current FFmpeg git head is supported
> here (and that we do not like top-posting), Carl Eugen
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