Recherche avancée

Sur d’autres sites (9243)

• FFMpeg command to merge 1 video and 2 audio files while also reducing volume of one audio

  26 septembre 2022, par UserM

  I need to construct a FFMpeg using amix or any equivalent command to merge 1 video and 2 audio files while also reducing volume of one background music file (ukulele.mp3).
Refer : https://ffmpeg.org/ffmpeg-filters.html#Examples-11

  


  //cmd works with out volume reduction of background music file
anima_buf = ("C:/ffmpeg/bin/ffmpeg -thread_queue_size 8192 -safe 0 -f concat -i %s -t %s -safe 0 -f concat -i %s -i ./music/ukulele.mp3\
-filter_complex amix=inputs=2:duration=shortest -c:v libx264 -profile:v high -crf 20 -pix_fmt yuv420p -y %s" % ( anima_img_file, anima_len, anima_audio_file, anima_opvideo_file))
os.system(anima_buf)
//successful

//cmd to reduce volume of background music
    anima_buf = ("C:/ffmpeg/bin/ffmpeg -thread_queue_size 8192 -safe 0 -f concat -i %s -t %s -safe 0 -f concat -i %s -i ./music/ukulele.mp3\
    -filter_complex amix=inputs=2:duration=shortest:dropout_transition=0:weights="1 0.25":normalize=0 -c:v libx264 -profile:v high -crf 20 -pix_fmt yuv420p -y %s" % ( anima_img_file, anima_len, anima_audio_file, anima_opvideo_file) )
os.system(anima_buf)
                                                                                   
SyntaxError: invalid syntax mentioned at weights="1 0.25"


  


  FFmpeg version :

  


  ffmpeg version 2022-05-23-git-6076dbcb55-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 11.3.0 (Rev1, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx 
--enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame 
--enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
libavutil      57. 25.100 / 57. 25.100
libavcodec     59. 28.100 / 59. 28.100
libavformat    59. 24.100 / 59. 24.100
libavdevice    59.  6.100 / 59.  6.100
libavfilter     8. 38.100 /  8. 38.100
libswscale      6.  6.100 /  6.  6.100
libswresample   4.  6.100 /  4.  6.100
libpostproc    56.  5.100 / 56.  5.100


  


  Can someone guide me, thanks in advance

  


• ffmpeg Nvidia build [closed]

  30 septembre 2022, par Never

  I follow this document
https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/#compiling-for-linux
compile ffmpeg

  


  the documentation says "To compile FFmpeg, the CUDA toolkit must be installed on the system, though the CUDA toolkit is not needed to run the FFmpeg compiled binary."

  


  Why does running ffmpeg binary still require CUDA toolkit after I compile ffmpeg

  


  $ ./ffmpeg
./ffmpeg: error while loading shared libraries: libnppig.so.11: cannot open shared object file: No such file or directory


  


  I follow this document
https://developer.nvidia.com/cuda-downloads?target_os=Linux&target_arch=x86_64&Distribution=Debian&target_version=11&target_type=deb_local
install cuda

  


  it runs ok

  


  $ ./ffmpeg

ffmpeg version N-108433-g8089fe072e Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --extra-libs='-lpthread -lm' --ld=g++ --bindir=/root/bin --enable-gpl --enable-gnutls --enable-libaom --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libsvtav1 --enable-libdav1d --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libmfx --enable-nonfree --enable-cuda-nvcc --enable-cuvid --enable-nvenc --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64
  libavutil      57. 38.100 / 57. 38.100
  libavcodec     59. 48.100 / 59. 48.100
  libavformat    59. 33.100 / 59. 33.100
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 49.100 /  8. 49.100
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

Use -h to get full help or, even better, run 'man ffmpeg'


  


  How to run ffmpeg without installing cuda ?

  


• Restream a rtsp stream to a rtmp server

  26 septembre 2022, par Sayan Chakraborty

  I have few hikvision cameras, I want to access it remotely in an app that I wrote. I am able to get the camera feed when I am connected to the network which has the camera. So I have setup a rtmp server in ec2 with Nginx, where I will be broadcasting the camera video feed through the raspberry pi, and would Be able to fetch the feed in my app.

  


  I used obs to stream the camera feed to the ramp server and was able to successfully get the video feed from the ec2 instance, but when using ffmpeg I am getting the following error.

  


  pi@raspberrypi:~$ ffmpeg -re -i rtsp://admin:pass@192.168.0.253/ISAPI/Streaming/channels/101 -an -c:v libx264 -f flv rtmp://ec2instanceip/live
ffmpeg version 4.2.7-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
[rtsp @ 0x55dd3b126300] Missing PPS in sprop-parameter-sets, ignoring
[rtsp @ 0x55dd3b126300] UDP timeout, retrying with TCP
[rtsp @ 0x55dd3b126300] method PAUSE failed: 551 Option not supported
[rtsp @ 0x55dd3b126300] Could not find codec parameters for stream 0 (Video: h264, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, rtsp, from 'rtsp://admin:pass@192.168.0.253/ISAPI/Streaming/channels/101':
  Metadata:
    title           : Media Presentation
  Duration: N/A, bitrate: 64 kb/s
    Stream #0:0: Video: h264, none, 90k tbr, 90k tbn, 180k tbc
    Stream #0:1: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
Output #0, flv, to 'rtmp://ec2instanceip/live':
Output file #0 does not contain any stream