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• How to statically build ffmpeg with librtmp without root on centos 6.4 ?

  22 avril 2014, par Shuman

  i forked STVS’s batch build script here. only added lines for rtmp ? but why it’s not working , the error i got is

  *** Building FFmpeg ***
  
  ERROR: librtmp not found

  if i check the config.log file

  gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -I/usr/tmp/tmp/ffmpeg-static-test/target/include -I/usr/tmp/tmp/ffmpeg-static-test/target/include -static --static -std=c99 -fomit-frame-pointer -pthread -I/usr/tmp/tmp/ffmpeg-static-test/target/include/opus -I/usr/tmp/tmp/ffmpeg-static-test/target/include -Wl,-z,relro -L/usr/tmp/tmp/ffmpeg-static-test/target/lib -c -o /var/tmp/ffconf.CIIzEs8o.o /var/tmp/ffconf.bBYD2amo.c
  
  gcc -L/usr/tmp/tmp/ffmpeg-static-test/target/lib -lm -L/usr/tmp/tmp/ffmpeg-static-test/target/lib -lm -static -Wl,--as-needed -I/usr/tmp/tmp/ffmpeg-static-test/target/include -Wl,-z,relro -L/usr/tmp/tmp/ffmpeg-static-test/target/lib -o /var/tmp/ffconf.goVEXKQq /var/tmp/ffconf.CIIzEs8o.o -lrtmp -lssl -lcrypto -ldl -lz -L/usr/tmp/tmp/ffmpeg-static-test/target/lib -lopus -lmp3lame -lfaac -lm -pthread -lbz2 -lz -lrt
  
  /usr/bin/ld: cannot find -lssl
  
  collect2: ld returned 1 exit status
  
  ERROR: librtmp not found

  i then checked my openssl install, it’s installed and

  > which openssl
  
  /usr/bin/openssl
  
  
  
  
  
  > ldd /usr/bin/openssl
  
  linux-vdso.so.1 =>  (0x00007fffd19ff000)
  
  libssl.so.10 => /usr/lib64/libssl.so.10 (0x0000003358000000)
  
  libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x0000003357c00000)
  
  libkrb5.so.3 => /lib64/libkrb5.so.3 (0x0000003356c00000)
  
  libcom_err.so.2 => /lib64/libcom_err.so.2 (0x0000003355800000)
  
  libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x0000003357400000)
  
  libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x0000003355c00000)
  
  libdl.so.2 => /lib64/libdl.so.2 (0x000000334e800000)
  
  libz.so.1 => /lib64/libz.so.1 (0x000000334f000000)
  
  libc.so.6 => /lib64/libc.so.6 (0x000000334e000000)
  
  libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x0000003356800000)
  
  libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x0000003357000000)
  
  libresolv.so.2 => /lib64/libresolv.so.2 (0x000000334fc00000)
  
  libpthread.so.0 => /lib64/libpthread.so.0 (0x000000334ec00000)
  
  /lib64/ld-linux-x86-64.so.2 (0x000000334dc00000)
  
  libselinux.so.1 => /lib64/libselinux.so.1 (0x0000003350000000)

  which means i have libssl.so already. i tried adding -L/usr/lib64 to the configure script, but still it’s not working.

  previously in the build script

  CFLAGS="-I$TARGET_DIR/include" LDFLAGS="-L$TARGET_DIR/lib -lm" ./configure --prefix=${OUTPUT_DIR:-$TARGET_DIR} --extra-cflags="-I$TARGET_DIR/include" --extra-ldflags="-L$TARGET_DIR/lib -lm" --extra-version=static --disable-debug --disable-shared --enable-static --extra-cflags=--static --disable-ffplay --disable-ffserver --disable-doc --enable-gpl --enable-pthreads --enable-postproc --enable-gray --enable-runtime-cpudetect --enable-libfaac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-bzlib --enable-zlib --enable-nonfree --enable-version3 --enable-libvpx --disable-devices --enable-librtmp

  i tried

  CFLAGS="-I$TARGET_DIR/include" LDFLAGS="-L$TARGET_DIR/lib -L/usr/lib64 -lm" ./configure --prefix=${OUTPUT_DIR:-$TARGET_DIR} --extra-cflags="-I$TARGET_DIR/include" --extra-ldflags="-L$TARGET_DIR/lib -L/usr/lib64 -lm" --extra-version=static --disable-debug --disable-shared --enable-static --extra-cflags=--static --disable-ffplay --disable-ffserver --disable-doc --enable-gpl --enable-pthreads --enable-postproc --enable-gray --enable-runtime-cpudetect --enable-libfaac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-bzlib --enable-zlib --enable-nonfree --enable-version3 --enable-libvpx --disable-devices --enable-librtmp

  same error, what am i missing ?

• replaygain_synthesis.h : Fix FLAC_SHARE__MAX_SUPPORTED_CHANNELS.

  11 mai 2014, par Erik de Castro Lopo

  replaygain_synthesis.h : Fix FLAC_SHARE__MAX_SUPPORTED_CHANNELS.
  Was previously hard coded as 2 when it should be FLAC__MAX_CHANNELS.
  Patch-from : lvqcl <lvqcl.mail@gmail.com>
  

  • [DH] include/share/replaygain_synthesis.h

• Clipping audio problem on ffmpeg live stream

  20 mars 2019, par Ivan Bombash Stokic

  in 30-40% of the live stream i get some king of distortion or clipping in the streamed audio and i have no idea why, is is only because low hardware performance maybe ? I am running the stream on a Raspberry pi 3b+ CPU usage while streaming from 25 to 30% Ram usage 28% , storage device is a USB pen drive.

  Here is the code :

  ffmpeg -re -f alsa -i default -re -stream_loop -1 -i "/home/pi/Documents/Youtube/video720p.mp4" -c:v copy -c:a aac -f flv -max_muxing_queue_size 400 rtmp://a.rtmp.youtube.com/live2/pfjd-jhjs-k3td-xxxx

  Or i should buffer it before streaming or re-encode the audio before streaming ?

  Thanks in advance !