Newest 'ffmpeg' Questions - Stack Overflow

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• how to pass the argument for latest file pick

  11 mai 2018, par vikash garg

  cd C:\FFAStrans0.9.0\Processors\ffmpeg\x64
  
  
  for %%a  in ("C:\FFAStrans0.9.0\encode\out\done\*.*")  do ffmpeg -i "%%a" -i  C:\FFAStrans0.9.0\IT.png -filter_complex "overlay=520:20"  C:\FFAStrans0.9.0\encode\out\%%~na.mp4
  

• Create thumbnail image from video in server in php

  11 mai 2018, par swamy

  In my website I have a option to upload video file by the user. In that I want to create a thumbnail image of that video. I have tried in local system with some coding it is working fine. I tried same coding in to service it is not working. I checked for ffmpeg enabled in server, it was disabled. Is their any other option to creating thumbnail in server with out enabling the ffmpeg? Please help me to find the solution.

• python ffmpeg moov atom not found Invalid data when processing input

  11 mai 2018, par Isocrates

  I have a progress that records the screen, and audio from a microphone, and then combines the video and audio recording (.mp4 and .wav) into one mkv file.

  I am using python 3.6 and ffmpeg to achieve this aim. For short videos (<20 sec.) it works, but for longer recordings it presents the following error message:

  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55abb3a52540] moov atom not found
  tmp/tmp_0.mp4: Invalid data found when processing input
  

  Full output:

  ffmpeg version 3.3.7 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 7 (GCC)
  configuration: --prefix=/usr --bindir=/usr/bin -- 
  datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg -- 
  incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man -- 
  arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp, 
  -D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp- 
  buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat- 
  hardened-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables' --extra- 
  ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' -- 
  extra-cflags='-I/usr/include/nvenc ' --enable-libopencore-amrnb -- 
  enable- 
  libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib 
  --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt -- 
  enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable- 
  libcdio --enable-indev=jack --enable-libfreetype --enable-libfribidi -- 
  enable-libgsm --enable-libmp3lame --enable-nvenc --enable-openal --enable- 
  opencl --enable-opengl --enable-libopenjpeg --enable-libopus --enable- 
  libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex -- 
  enable-libtheora --enable-libvorbis --enable-libv4l2 --enable- libvidstab - 
  -enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid -- 
  enable-avfilter --enable-avresample --enable-postproc --enable-pthreads -- 
  disable-static --enable-shared --enable-gpl --disable-debug --disable- 
  stripping --shlibdir=/usr/lib64 --enable-libmfx --enable-runtime-cpudetect
    libavutil      55. 58.100 / 55. 58.100
    libavcodec     57. 89.100 / 57. 89.100
    libavformat    57. 71.100 / 57. 71.100
    libavdevice    57.  6.100 / 57.  6.100
    libavfilter     6. 82.100 /  6. 82.100
    libavresample   3.  5.  0 /  3.  5.  0
    libswscale      4.  6.100 /  4.  6.100
    libswresample   2.  7.100 /  2.  7.100
    libpostproc    54.  5.100 / 54.  5.100
  [wav @ 0x55abb3a0b880] Ignoring maximum wav data size, file may be invalid
  [wav @ 0x55abb3a0b880] Estimating duration from bitrate, this may be 
  inaccurate
  Guessed Channel Layout for Input Stream #0.0 : stereo
  Input #0, wav, from 'tmp/tmp_0.wav':
    Metadata:
      encoder         : Lavf57.71.100
    Duration: 00:00:21.97, bitrate: 768 kb/s
  Stream #0:0: Audio: pcm_mulaw ([7][0][0][0] / 0x0007), 48000 Hz, 
  stereo, s16, 768 kb/s
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55abb3a52540] moov atom not found
  tmp/tmp_0.mp4: Invalid data found when processing input
  

  The python file (ffmpeg.py) is as follows. The class, AV_COMPILE, is not yet complete, held up by the aforementioned error, and therefore still uses the initial test files as defaults. But otherwise it ought to work:

  import os, time, glob
  
  TMP_DIR = "tmp"
  DISPLAY = os.environ['DISPLAY']
  EXT = {
      'Video':'mp4',
      'Audio':'wav',
      'AV':'mkv',
  }
  
  class ffmpegVideo:
  
      FFMPEG_BIN = "ffmpeg"
      AUDIO = False
  
      def __init__(self, fps = 30, audio = True):
      global TMP_DIR, DISPLAY, EXT
  
      self.fps = fps
  
      if audio:
          self.AUDIO = True
  
      self.video_filename = self.unique_filename()
  
      self.command = [ self.FFMPEG_BIN,
          '-video_size', '1920x1080',
          '-framerate', str(fps),
          '-f', 'x11grab',
          '-i', DISPLAY,
          '-vcodec', 'libx264',
          '-qp', '0',
          '-preset', 'ultrafast',
          '-y', TMP_DIR + '/' + self.video_filename
      ]
  
  def start(self):
      import threading as th
  
      thread = th.Thread(target=self.record)
      thread.start()
  
  def record(self):
      import subprocess as sp
  
      self.pipe = sp.Popen(self.command, stderr=sp.PIPE)
  
      if self.AUDIO:
          ffmpegAudio().start()
  
  def stop(self):
      self.pipe.terminate()
  
  def unique_filename(self):
      global TMP_DIR, EXT
  
      i = 0
  
      while os.path.exists((TMP_DIR + '/' + 'tmp_%s.%s') % (i, EXT['Video'])):
          i += 1
  
      return ('tmp_%s.%s') % (i, EXT['Video'])
  
  class ffmpegAudio:
  
      FFMPEG_BIN = "ffmpeg"
  
      def __init__(self):
  
          self.audio_filename = self.unique_filename()
  
          self.command = [ self.FFMPEG_BIN,
              '-f', 'pulse',
              '-ac', '2',
              '-ar', '48000',
              '-i', 'default',
             '-acodec', 'pcm_mulaw',
             '-y', TMP_DIR + '/' + self.audio_filename
          ]
  
      def start(self):
          import threading as th
  
          au_thread = th.Thread(target=self.record)
          au_thread.start()
  
      def record(self):
           import subprocess as sp
  
          self.pipe = sp.Popen(self.command, stderr=sp.PIPE)
  
      def stop(self):
          self.pipe.terminate()
  
      def unique_filename(self):
          global TMP_DIR, EXT
  
          i = 0
  
          while os.path.exists((TMP_DIR + '/' + 'tmp_%s.%s') % (i, EXT['Audio'])):
          i += 1
  
          return ('tmp_%s.%s') % (i, EXT['Audio'])
  
  class AV_COMPILE:
  
      def __init__(self, au_in = TMP_DIR + '/' + 'out1.wav', vd_in = 
  TMP_DIR + '/' + 'test4.mp4', out = TMP_DIR + '/' + 'av.mkv'):
          import subprocess as sp
  
          au_in = min(glob.iglob(TMP_DIR + '/*.wav'), key=os.path.getctime)
          vd_in = min(glob.iglob(TMP_DIR + '/*.mp4'), key=os.path.getctime)
  
          self.command = ('ffmpeg -i %s  -r 30 -i %s -shortest -c:a aac -c:v copy %s') % (au_in, vd_in, out)
          sp.call(self.command, shell=True)
  

  I would be grateful for any assistance you could provide in understanding why this happens and how to solve the error. Also, I am happy to receive any other tips on how to improve this code, or any other problems anyone might notice.

  EDIT: I now believe that the reason for this error in longer videos, and occasionally shorter, is that the program is proceeding to attempt to compile the av output whether or not it has finished compiling the original video file. I tested a time.sleep(10) function to delay AV_COMPILE, and this seems to work.

  However, as video files get larger, obviously the delay needs to be adjusted. So I should like to know how I can separately check the integrity of the video file and determine that it is safe to proceed to the next step.

• is there any functional build of ffmpeg to android

  11 mai 2018, par Rafael Lima

  I've searching the last 3 days for a usable API for android access ffmpeg. Since FFMpeg group doesn't release an official lib for android I found several paralel projects trying to build it.

  So it brings me to my nightmare that is called compile.

  i've followed all these tutorials: https://trac.ffmpeg.org/wiki/CompilationGuide/Android

  And others found in different places. but none of them build

  NONE OF THEM IS LESS THAN 3 YEARS OLD

  Sorry for the caps, but it is frustrating... no ffmpeg build projects I found deal with nkd above 14 and google doesn't keep in archive nkds older than that, so even if i agree with get all outdated libraries source i cant reproduce de compiler i cant download the same ndk...

  The only api i manage to download with a functional build of ffmpeg probably was compiled without some codecs, because on my tests i can only handle few types of videos

  ===============================================================

  The question is, does anyone know an actual, stable, project for building ffmpeg to android?

  I'm even willing to pay in order to get a working version of it

• NODE.JS using audioconcat , configured ffmpeg but still have prob

  11 mai 2018, par Adnan Khan

  Want to concatenate two audio files. i used an npm package known as audioconcat but when i installed and configured the below code i am confronted with the following error

  Error: Error: Cannot find ffmpeg
      at E:\VoiceMan\registercheck\node_modules\fluent-ffmpeg\lib\processor.js:136:22
      at E:\VoiceMan\registercheck\node_modules\fluent-ffmpeg\lib\capabilities.js:123:9
      at E:\VoiceMan\registercheck\node_modules\async\dist\async.js:356:16
      at nextTask (E:\VoiceMan\registercheck\node_modules\async\dist\async.js:5057:29)
      at E:\VoiceMan\registercheck\node_modules\async\dist\async.js:5064:13
      at apply (E:\VoiceMan\registercheck\node_modules\async\dist\async.js:21:25)
      at E:\VoiceMan\registercheck\node_modules\async\dist\async.js:56:12
      at E:\VoiceMan\registercheck\node_modules\async\dist\async.js:840:16
      at E:\VoiceMan\registercheck\node_modules\fluent-ffmpeg\lib\capabilities.js:116:11
      at E:\VoiceMan\registercheck\node_modules\fluent-ffmpeg\lib\utils.js:223:16
  ffmpeg stderr: undefined
  

  Then I put my problem on stackoverflow. A kind developer suggest me to install ffmpeg also. which i successfully installed and set there path variables but now i am having another issue which tells me that no such file are directry found..i placed my audio files in the same folder of this module. here is the error

  working11
  working1123423423423
  ffmpeg process started: ffmpeg -i concat:audio/a(1).m4a|audio/a(2).m4a|audio/a(3).m4a -y -acodec copy all.m4a
  Error: Error: ffmpeg exited with code 1: concat:audio/a(1).m4a|audio/a(2).m4a|audio/a(3).m4a: No such file or directory
  
      at ChildProcess. (C:\Projects\audio\node_modules\fluent-ffmpeg\lib\processor.js:182:22)
      at emitTwo (events.js:126:13)
      at ChildProcess.emit (events.js:214:7)
      at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
  ffmpeg stderr: ffmpeg version N-90173-gfa0c9d69d3 Copyright (c) 2000-2018 the FFmpeg developers
    built with gcc 7.3.0 (GCC)
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libas
  s --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --ena
  ble-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack -
  -enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidst
  ab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libmfx --enable-amf --enable-cuda
   --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth
    libavutil      56.  7.101 / 56.  7.101
    libavcodec     58. 13.100 / 58. 13.100
    libavformat    58. 10.100 / 58. 10.100
    libavdevice    58.  2.100 / 58.  2.100
    libavfilter     7. 12.100 /  7. 12.100
    libswscale      5.  0.101 /  5.  0.101
    libswresample   3.  0.101 /  3.  0.101
    libpostproc    55.  0.100 / 55.  0.100
  concat:audio/a(1).m4a|audio/a(2).m4a|audio/a(3).m4a: No such file or directory
  

  here is my code :

  var audioconcat = require('audioconcat')
  
  
  var songs = [
    'a(1).mp3',
    'a(2).mp3',
    'a(3).mp3'
  ]
   console.log("working11")
  audioconcat(songs)
  
    .concat('all.mp3') 
    .on('start', function (command) {
      console.log('ffmpeg process started:', command)
    })
    .on('error', function (err, stdout, stderr) {
      console.error('Error:', err)
      console.error('ffmpeg stderr:', stderr)
    })
    .on('end', function (output) {
      console.error('Audio created in:', output)
    })
     console.log("working1123423423423")