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Sur d’autres sites (4161)

  • Was able to mix two audio files and 1 video, but the audio is not in sync with the video

    15 janvier 2019, par Sumeet

    I am trying to mix 2 audio files, say audio1.mp3 and audio2.wav with a video file, say video.mp4. I was able to mix the files into one file, say final.mp4, but the audio and video in the final file is not in sync.
    I used amix to mix the files using command prompt.
    I am not able to figure out how to use apad in my command line to see if that works. Should I really be using apad or am I on the wrong track ?

    ffmpeg -i video.mp4 -i audio1.mp3 -i audio2.wav -filter_complex "[1][2]amix=inputs=2[a]" -map 0:v -map "[a]" -c:v copy outputfilename.mp4

  • Segmenting an audio stream or audio only file

    15 janvier 2013, par Luuk D. Jansen

    There is need for an audio only link for HTTP-live streaming. I now use the segmenter in FFMPEG for the video, and that works great. However, when giving an audio-file the segmenter does not seem to work, just creates one segment.

    The call to FFMPEG for the segmentation is :

    ffmpeg -i data/media/1/2/encoded.mp3 -y -c copy -flags global_header
    -map 0 -f segment -segment_time 10 -segment_list data/media/1/2/fileList.txt -segment_format libmp3lame
    data/media/1/2/segment_%05d.mp3

    I did put as the -segment_format 'libmp3lame' in, but it doesn't seem to make a difference.

    The first step is the encoding, this is the bedbug output :

    20:11:36,158 DEBUG ~ FFMPEG: ffmpeg version 0.10.2.git-d3d5e84 Copyright (c) 2000-2012 the FFmpeg developers
    
20:11:36,158 DEBUG ~ FFMPEG:   built on May  2 2012 19:00:38 with clang 3.0 (tags/Apple/clang-211.10.1)
    
20:11:36,158 DEBUG ~ FFMPEG:   configuration: --prefix=/opt/local --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libdirac --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libxvid --enable-libx264 --enable-libvpx --enable-libspeex --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --arch=x86_64 --enable-yasm
    
20:11:36,158 DEBUG ~ FFMPEG:   libavutil      51. 44.100 / 51. 44.100
    
20:11:36,158 DEBUG ~ FFMPEG:   libavcodec     54. 12.100 / 54. 12.100
    
20:11:36,158 DEBUG ~ FFMPEG:   libavformat    54.  3.100 / 54.  3.100
    
20:11:36,158 DEBUG ~ FFMPEG:   libavdevice    53.  4.100 / 53.  4.100
    
20:11:36,158 DEBUG ~ FFMPEG:   libavfilter     2. 66.101 /  2. 66.101
    
20:11:36,158 DEBUG ~ FFMPEG:   libswscale      2.  1.100 /  2.  1.100
    
20:11:36,158 DEBUG ~ FFMPEG:   libswresample   0. 10.100 /  0. 10.100
    
20:11:36,158 DEBUG ~ FFMPEG:   libpostproc    52.  0.100 / 52.  0.100
    
20:11:36,162 DEBUG ~ FFMPEG: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'data/media/1/1/test.m4a':
    
20:11:36,162 DEBUG ~ FFMPEG:   Metadata:
    
20:11:36,162 DEBUG ~ FFMPEG:     major_brand     : mp42
    
20:11:36,162 DEBUG ~ FFMPEG:     minor_version   : 1
    
20:11:36,163 DEBUG ~ FFMPEG:     compatible_brands: mp42mp41
    
20:11:36,163 DEBUG ~ FFMPEG:     creation_time   : 2011-12-07 18:53:04
    
20:11:36,163 DEBUG ~ FFMPEG:   Duration: 00:00:24.20, start: 0.000000, bitrate: 40 kb/s
    
20:11:36,163 DEBUG ~ FFMPEG:     Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 22050 Hz, stereo, s16, 39 kb/s
    
20:11:36,163 DEBUG ~ FFMPEG:     Metadata:
    
20:11:36,163 DEBUG ~ FFMPEG:       creation_time   : 2011-12-07 18:53:04
    
20:11:36,163 DEBUG ~ FFMPEG:       handler_name    : Apple Sound Media Handler
    
20:11:36,170 DEBUG ~ FFMPEG: [mpegts @ 0x7fe4c404d000] muxrate VBR, pcr every 4 pkts, sdt every 200, pat/pmt every 40 pkts
    
20:11:36,171 DEBUG ~ FFMPEG: Output #0, mpegts, to '/Users/Luuk/Documents/Java/idoms-server/data/media/1/2/encoded.mp3':
    
20:11:36,171 DEBUG ~ FFMPEG:   Metadata:
    
20:11:36,171 DEBUG ~ FFMPEG:     major_brand     : mp42
    
20:11:36,171 DEBUG ~ FFMPEG:     minor_version   : 1
    
20:11:36,171 DEBUG ~ FFMPEG:     compatible_brands: mp42mp41
    
20:11:36,171 DEBUG ~ FFMPEG:     creation_time   : 2011-12-07 18:53:04
    
20:11:36,171 DEBUG ~ FFMPEG:     encoder         : Lavf54.3.100
    
20:11:36,171 DEBUG ~ FFMPEG:     Stream #0:0(eng): Audio: mp3, 48000 Hz, stereo, s16, 64 kb/s
    
20:11:36,171 DEBUG ~ FFMPEG:     Metadata:
    
20:11:36,171 DEBUG ~ FFMPEG:       creation_time   : 2011-12-07 18:53:04
    
20:11:36,171 DEBUG ~ FFMPEG:       handler_name    : Apple Sound Media Handler
    
20:11:36,171 DEBUG ~ FFMPEG: Stream mapping:
    
20:11:36,171 DEBUG ~ FFMPEG:   Stream #0:0 -> #0:0 (aac -> libmp3lame)
    
20:11:36,171 DEBUG ~ FFMPEG: Press [q] to stop, [?] for help
    
20:11:36,673 DEBUG ~ FFMPEG: size=     109kB time=00:00:12.79 bitrate=  69.5kbits/s    
    
20:11:37,156 DEBUG ~ FFMPEG: size=     209kB time=00:00:24.24 bitrate=  70.7kbits/s    
    
20:11:37,156 DEBUG ~ FFMPEG: video:0kB audio:190kB global headers:0kB muxing overhead 10.301383%

    Then the next is the segmentation (version 0.10.2 cannot do both at the same time yet) :

    20:11:37,211 DEBUG ~ FFMPEG: ffmpeg version 0.10.2.git-d3d5e84 Copyright (c) 2000-2012 the FFmpeg developers
    
    20:11:37,212 DEBUG ~ FFMPEG:   built on May  2 2012 19:00:38 with clang 3.0 (tags/Apple/clang-211.10.1)
    
    20:11:37,212 DEBUG ~ FFMPEG:   configuration: --prefix=/opt/local --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libdirac --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libxvid --enable-libx264 --enable-libvpx --enable-libspeex --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --arch=x86_64 --enable-yasm
    
    20:11:37,212 DEBUG ~ FFMPEG:   libavutil      51. 44.100 / 51. 44.100
    
    20:11:37,212 DEBUG ~ FFMPEG:   libavcodec     54. 12.100 / 54. 12.100
    
    20:11:37,212 DEBUG ~ FFMPEG:   libavformat    54.  3.100 / 54.  3.100
    
    20:11:37,212 DEBUG ~ FFMPEG:   libavdevice    53.  4.100 / 53.  4.100
    
    20:11:37,212 DEBUG ~ FFMPEG:   libavfilter     2. 66.101 /  2. 66.101
    
    20:11:37,212 DEBUG ~ FFMPEG:   libswscale      2.  1.100 /  2.  1.100
    
    20:11:37,212 DEBUG ~ FFMPEG:   libswresample   0. 10.100 /  0. 10.100
    
    20:11:37,212 DEBUG ~ FFMPEG:   libpostproc    52.  0.100 / 52.  0.100
    
    20:11:37,226 DEBUG ~ FFMPEG: [mpegts @ 0x7fccc2049800] max_analyze_duration 5000000 reached at 5016000
    
    20:11:37,226 DEBUG ~ FFMPEG: Input #0, mpegts, from '/Users/Luuk/Documents/Java/idoms-server/data/media/1/2/encoded.mp3':
    
    20:11:37,226 DEBUG ~ FFMPEG:   Duration: 00:00:24.12, start: 1.376978, bitrate: 71 kb/s
    
    20:11:37,226 DEBUG ~ FFMPEG:   Program 1 
    
    20:11:37,226 DEBUG ~ FFMPEG:     Metadata:
    
    20:11:37,226 DEBUG ~ FFMPEG:       service_name    : Service01
    
    20:11:37,226 DEBUG ~ FFMPEG:       service_provider: FFmpeg
    
    20:11:37,226 DEBUG ~ FFMPEG:     Stream #0:0[0x100](eng): Audio: mp3 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16, 64 kb/s
    
    20:11:37,226 DEBUG ~ FFMPEG: Output #0, segment, to '/Users/Luuk/Documents/Java/idoms-server/data/media/1/2/segment_%05d.mp3':
    
    20:11:37,226 DEBUG ~ FFMPEG:   Metadata:
    
    20:11:37,226 DEBUG ~ FFMPEG:     encoder         : Lavf54.3.100
    
    20:11:37,226 DEBUG ~ FFMPEG:     Stream #0:0(eng): Audio: mp3 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, 64 kb/s
    
    20:11:37,226 DEBUG ~ FFMPEG: Stream mapping:
    
    20:11:37,226 DEBUG ~ FFMPEG:   Stream #0:0 -> #0:0 (copy)
    
    20:11:37,226 DEBUG ~ FFMPEG: Press [q] to stop, [?] for help
    
    20:11:37,238 DEBUG ~ FFMPEG: size=       0kB time=00:00:24.28 bitrate=   0.0kbits/s    
    
    20:11:37,238 DEBUG ~ FFMPEG: video:0kB audio:190kB global headers:0kB muxing overhead -100.000000%

  • 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

    


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