Sur d’autres sites (5393)

• gcc is unable to create an executable file

  1er juin 2023, par Abhinandan Madaan

  I'm trying to compile ffmpeg cloned from ffmpeg github (with gpu support using CUDA) in my windows instance. I'm using msys2 mingw64 commandline to run the following command. The configure script is present in the root of the cloned ffmpeg codebase mentioned above.

  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags=-I/c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v12.1/include --extra-ldflags=-L/c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v12.1/lib/x64


  


  But I get the following error :

  


  gcc is unable to create an executable file.
If gcc is a cross-compiler, use the --enable-cross-compile option.
Only do this if you know what cross compiling means.
C compiler test failed.

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.


  


  config.log file looks something like this(I have removed most of the unnecessary lines in between the logs) :

  


  # ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags='-I/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/include' --extra-ldflags='-L/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/lib/x64'
ACLOCAL_PATH=/mingw64/share/aclocal:/usr/share/aclocal
ALLUSERSPROFILE='C:\ProgramData'
ALL_COMPONENTS='
    
    aac_adtstoasc_bsf
av1_frame_merge_bsf
.
.
.
.
gcc -I/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/include -c -o /tmp/ffconf.b4kwCEqD/test.o /tmp/ffconf.b4kwCEqD/test.c
gcc.exe: warning: Files/NVIDIA: linker input file unused because linking not done
gcc.exe: error: Files/NVIDIA: linker input file not found: No such file or directory
gcc.exe: warning: GPU: linker input file unused because linking not done
gcc.exe: error: GPU: linker input file not found: No such file or directory
gcc.exe: warning: Computing: linker input file unused because linking not done
gcc.exe: error: Computing: linker input file not found: No such file or directory
gcc.exe: warning: Toolkit/CUDA/v12.1/include: linker input file unused because linking not done
gcc.exe: error: Toolkit/CUDA/v12.1/include: linker input file not found: No such file or directory
C compiler test failed.


  


  It looks like it is unable to recognise the directory names with spaces included. I've tried escaping using \ as well as with double quotes and single quotes too. I've tried the following commands, but the result is the same :

  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags=-I /c/"Program Files"/"NVIDIA GPU Computing Toolkit"/CUDA/v12.1/include --extra-ldflags=-L /c/"Program Files"/"NVIDIA GPU Computing Toolkit"/CUDA/v12.1/lib/x64


  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags="-I/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/include" --extra-ldflags="-L/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/lib/x64"


  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags="-I'/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/include'" --extra-ldflags="-L'/c/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v12.1/lib/x64'"


  


  ./configure --enable-cuda --enable-cuvid --enable-nvenc --enable-libnpp --enable-nonfree --extra-cflags=-I/c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v12.1/include --extra-ldflags=-L/c/Program\ Files/NVIDIA\ GPU\ Computing\ Toolkit/CUDA/v12.1/lib/x64


  


• FFMPEG - How to transcode and segment to multiple bitrates ?

  25 juillet 2014, par ipegasus

  I would like to know how to use FFMPEG to transcode video (Prores codec) and segment videos to multiple bitrates. Is it possible to do it in one command ?

  Current working solution with X264 :

  1. Encode Videos Using X264.

     /home/ubuntu/bin/ffmpeg -y -i "$video_path" -threads 1 -f mpegts \
     -acodec libfaac -ab 64k -ar 44100 -vcodec libx264 -vprofile baseline -x264opts "fps=12:keyint=36:bitrate=200" -s 416x234 "$DIR_VIDEO_OUTPUT/$filename"/p1.ts \
     -acodec libfaac -ab 64k -ar 44100 -vcodec libx264 -vprofile baseline -x264opts "fps=12:keyint=36:bitrate=400" -s 480x270 "$DIR_VIDEO_OUTPUT/$filename"/p2.ts \
     -acodec libfaac -ab 64k -ar 44100 -vcodec libx264 -vprofile baseline -x264opts "fps=24:keyint=72:bitrate=600" -s 640x360 "$DIR_VIDEO_OUTPUT/$filename"/p3.ts \
     -acodec libfaac -ab 64k -ar 44100 -vcodec libx264 -vprofile baseline -x264opts "fps=24:keyint=72:bitrate=1200" -s 640x360 "$DIR_VIDEO_OUTPUT/$filename"/p4.ts \
     -acodec libfaac -ab 64k -ar 44100 -vcodec libx264 -vprofile main -x264opts "fps=24:keyint=72:bitrate=1800" -s 960x540 "$DIR_VIDEO_OUTPUT/$filename"/p5.ts \
     -acodec libfaac -ab 64k -ar 44100 -vcodec libx264 -vprofile main -x264opts "fps=24:keyint=72:bitrate=2500" -s 960x540 "$DIR_VIDEO_OUTPUT/$filename"/p6.ts \
     -acodec libfaac -ab 64k -ar 44100 -vcodec libx264 -vprofile main -x264opts "fps=24:keyint=72:bitrate=4500" -s 1280x720 "$DIR_VIDEO_OUTPUT/$filename"/p7.ts

  2. Using an extrenal segmenter

     cd $DIR_VIDEO_OUTPUT/$filename
     mkdir M3U8
     for p in p1 p2 p3 p4 p5 p6 p7 ; do mkdir $DIR_VIDEO_OUTPUT/$filename/M3U8/$p.seg ; (cd M3U8 ; m3u8-segmenter —input $DIR_VIDEO_OUTPUT/$filename/$p.ts —duration 7 —output-prefix $p.seg/$p —m3u8-file $p.m3u8 —url-prefix "") ; done

  3. And finally manualy the individual playlists are joined into one

     echo ’

     EXTM3U

     EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=264000,RESOLUTION=416x234

     p1.m3u8

     EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=464000,RESOLUTION=480x270

     p2.m3u8

     EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=664000,RESOLUTION=640x360

     p3.m3u8

     EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1264000,RESOLUTION=640x360

     p4.m3u8

     EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1864000,RESOLUTION=960x540

     p5.m3u8

     EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=2564000,RESOLUTION=960x540

     p6.m3u8

     EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=4564000,RESOLUTION=1280x720

     p7.m3u8’ >> $filename.m3u8
     cd "$DIR_VIDEO_OUTPUT/$filename"/
     sudo rm *.ts

• Is there any way to port ffmpeg command to Android without root the device ?

  8 février 2014, par user1429903

  This link http://www.roman10.net/how-to-port-ffmpeg-the-program-to-androidideas-and-thoughts/ talks about port ffmpeg command to Android.

  Can anyone describe more detail ?

  My purpose is to record user's behavior on Android device and save as video file which contains user's sound.