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  • How can we use ffmpeg or fluent-ffmpeg with angular cli ?

    25 juillet 2019, par Nileshdeora1122

    How to use ffmpeg with angular2+ application ?

    im tring to use ffmpeg inside my angular application but it is throwing some error during importing ffmpeg in angular like this :

    // import * as ffmpeg from 'fluent-ffmpeg';

    but getting errors like this :

    ERROR in ./node_modules/fluent-ffmpeg/lib/ffprobe.js
    
Module not found: Error: Can't resolve 'child_process' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/utils.js
    
Module not found: Error: Can't resolve 'child_process' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
    
Module not found: Error: Can't resolve 'child_process' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
    
Module not found: Error: Can't resolve 'fs' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/capabilities.js
    
Module not found: Error: Can't resolve 'fs' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
    
Module not found: Error: Can't resolve 'fs' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/isexe/mode.js
    
Module not found: Error: Can't resolve 'fs' in '/home/pfacode1/angularApplication/careerfable2/node_modules/isexe'
    
ERROR in ./node_modules/isexe/windows.js
    
Module not found: Error: Can't resolve 'fs' in '/home/pfacode1/angularApplication/careerfable2/node_modules/isexe'
    
ERROR in ./node_modules/isexe/index.js
    
Module not found: Error: Can't resolve 'fs' in '/home/pfacode1/angularApplication/careerfable2/node_modules/isexe'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/utils.js
    
Module not found: Error: Can't resolve 'os' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
    
Module not found: Error: Can't resolve 'path' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
    
Module not found: Error: Can't resolve 'path' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/capabilities.js
    
Module not found: Error: Can't resolve 'path' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/fluent-ffmpeg.js
    
Module not found: Error: Can't resolve 'path' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/options/misc.js
    
Module not found: Error: Can't resolve 'path' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib/options'
    
ERROR in ./node_modules/which/which.js
    
Module not found: Error: Can't resolve 'path' in '/home/pfacode1/angularApplication/careerfable2/node_modules/which'
    
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
    
Module not found: Error: Can't resolve 'stream' in '/home/pfacode1/angularApplication/careerfable2/node_modules/fluent-ffmpeg/lib'

  • FFMPEG loudnorm filter does not work in combination with silenceremove filter

    12 mai 2021, par MareikeP

    I want to consistently normalize audio files for TTS model training. The output audio files should meet the following criteria :

    


      

    1. mono channel

      2. 


    2. sample rate of 22050 Hz

      3. 


    3. wav format

      4. 


    4. no silence at beginning and end of audio clip

      5. 


    5. volume of -24 dB

      6. 


    


    I have already fulfilled the first 4 criteria. So far, it works properly.

    


    Normalizing the volume basically works as well with this ffmpeg command -af loudnorm=I=-24:LRA=11:TP=-1.5 , but not in combination with the silence removal : As soon as I remove silence with this ffmpeg command agate=threshold=0.045:attack=0.5:release=500:ratio=5000,silenceremove=start_periods=1:start_threshold=0.0075,areverse,silenceremove=start_periods=1:start_threshold=0.0075,areverse, the loudness normalization does not work any longer : the output volume now varies between -25dB and -32dB instead of the desired -24 dB.

    


    This is the complete ffmpeg command I used :

    


    ffmpeg -i filename.flac -ac 1 -af agate=threshold=0.045:attack=0.5:release=500:ratio=5000,silenceremove=start_periods=1:start_threshold=0.0075,areverse,silenceremove=start_periods=1:start_threshold=0.0075,areverse,loudnorm=I=-24:LRA=11:TP=-1.5,aresample=22050 -y -hide_banner filename.wav


    


    And this is the piece of code that I'm using to run it :

    


    import os

INPUT_DIR = '/home/username/all_data'
OUTPUT_DIR = '/home/username/normalized_data'
for filename in os.listdir(INPUT_DIR):
    wav_filename = filename[:-5] + '.wav'
    command = (f'ffmpeg -i {INPUT_DIR}/{filename} -ac 1 -af agate='
               f'threshold=0.045:attack=0.5:release=500:ratio=5000,'
               f'silenceremove=start_periods=1:start_threshold=0.0075,'
               f'areverse,silenceremove=start_periods=1:start_threshold='
               f'0.0075,areverse,loudnorm=I=-24:LRA=11:TP=-1.5,aresample'
               f'=22050 -y -hide_banner {OUTPUT_DIR}/{wav_filename}')
    os.system(command)


    


    EDIT :

    


    A complete log from the ffmpeg command can be seen here :

    


    username@pop-os:~$ ffmpeg -i /home/username/audios/filename.flac -ac 1 -af agate=threshold=0.045:attack=0.5:release=500:ratio=5000,silenceremove=start_periods=1:start_threshold=0.0075,areverse,silenceremove=start_periods=1:start_threshold=0.0075,areverse,loudnorm=I=-24:LRA=11:TP=-1.5,aresample=22050 /home/username/result.wav
ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --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
Input #0, flac, from '/home/mareike/tts_data/save/audios_flac/0a6c8520-7536-11eb-8338-b7015f354987.flac':
  Duration: 00:00:04.64, start: 0.000000, bitrate: 1090 kb/s
    Stream #0:0: Audio: flac, 44100 Hz, stereo, s32 (24 bit)
Stream mapping:
  Stream #0:0 -> #0:0 (flac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
Output #0, wav, to '/home/mareike/result_0a6c8520-7536-11eb-8338-b7015f354987.wav':
  Metadata:
    ISFT            : Lavf58.29.100
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16, 352 kb/s
    Metadata:
      encoder         : Lavc58.54.100 pcm_s16le
size=     138kB time=00:00:03.19 bitrate= 353.0kbits/s speed=14.3x    
video:0kB audio:138kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.055375%


    


    Can anyone tell me what I'm doing wrong and how I can finally get the volume normalized to -24 dB (in combination with silence removal) ? Any help is appreciated, thank you very much !

    


  • FFmpeg error m4v to flv requested bitrate is too low

    20 décembre 2012, par Pradeep Singh

    FFMPEG OUTPUT

    COMMAND

    /usr/local/bin/ffmpeg -i '/home/machine/public_html/video_1355531272.m4v' -s '640x480' -sameq -ab '64k' -ar '44100' -f 'flv' -pass '1' -passlogfile '/home/machine/public_html/tmp/1355531273-50cbc4090d696-multipass'  -y /home/machine/public_html/tmp/1355531273-50cbc4090d2a9.flv &> /home/machine/public_html/tmp/1355531273-50cbc4090da7c.info
    
/usr/local/bin/ffmpeg -i '/home/machine/public_html/video_1355531272.m4v' -s '640x480' -sameq -ab '64k' -ar '44100' -f 'flv' -pass '2' -passlogfile '/home/machine/public_html/tmp/1355531273-50cbc4090d696-multipass'  -y /home/machine/public_html/tmp/1355531273-50cbc4090d2a9.flv &> /home/machine/public_html/tmp/1355531273-50cbc4090da7c.info
    
eng): Video: h264, yuv420p, 960x540, 3428 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 5994 tbc
    
    Metadata:
    
      creation_time   : 2012-12-14 22:50:55
    
    Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 111 kb/s
    
    Metadata:
    
      creation_time   : 2012-12-14 22:50:55
    
[buffer @ 0xdd079d0] w:960 h:540 pixfmt:yuv420p
    
[scale @ 0xdd07da0] w:960 h:540 fmt:yuv420p -> w:640 h:480 fmt:yuv420p flags:0xa0000004
    
[flv @ 0xdd041c0] requested bitrate is too low
    
Output #0, flv, to '/home/machine/public_html/tmp/1355531273-50cbc4090d2a9.flv':
    
    Stream #0.0(eng): Video: flv, yuv420p, 640x480, q=2-31, pass 2, 200 kb/s, 90k tbn, 29.97 tbc
    
    Metadata:
    
      creation_time   : 2012-12-14 22:50:55
    
    Stream #0.1(eng): Audio: adpcm_swf, 44100 Hz, stereo, s16, 64 kb/s
    
    Metadata:
    
      creation_time   : 2012-12-14 22:50:55
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
  Stream #0.1 -> #0.1
    
Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height
    
-------------------------------
    
RESULT
    
-------------------------------
    
Execute error. Output for file "/home/machine/public_html/video_1355531272.m4v" was found, but the file contained no data. Please check the available codecs compiled with FFmpeg can support this type of conversion. You can check the encode decode availability by inspecting the output array from PHPVideoToolkit::getFFmpegInfo().

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