2017-11-23 3:06 GMT+01:00 Sook Sin <[email protected]>: > Hi experts! My workplace is currently adopting ffmpeg as a solution to > normalize audios files in bulk. My colleague is having problem with the > installation of ffmpeg on Linux. The server is using CentOS Linux release > 7.3.1611 (Core). We have tried most of the solutions searchable from Google, > but they do not work. Could it be the issue is due to the wrong versions of > the dependencies and library files? If so, can someone please guide us in > resolving this problem? > > The 'make' commands shows numerous warnings and an error: > > libavcodec/libavcodec.a(bitstream.o): In function `bitswap_32': > > /var/www/ffmpeg/libavcodec/mathops.h:245: undefined reference to > `ff_reverse'
Please confirm that you are trying to build current FFmpeg git head (nothing else is supported here) and that you are using a sane configure line like "./configure --enable-gpl --enable-libmp3lame". > Running the ffmpeg commands shows an error: > > ffmpeg -i test1.mp3 -af "silenceremove=0:0:0:-1:1:-80dB, > dynaudnorm=p=1:m=3:r=1" -vn -acodec libmp3lame -b:a 12 > > 8K -ar 44100 -y test2.mp3 > > ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers > > built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-11) > > configuration: > Unknown encoder 'libmp3lame' Missing configure option "--enable-libmp3lame" Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
