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• Why can't I compile ffmpeg's shared libraries ? errors with "recompile with -fPIC"

  14 juillet, par Vigrond

  error:

  LD  libavcodec/libavcodec.so.61
  /usr/bin/ld: /home/user/ffmpeg_build/lib/libopus.a(celt.o): relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC
  /usr/bin/ld: failed to set dynamic section sizes: bad value
  collect2: error: ld returned 1 exit status
  make: *** [ffbuild/library.mak:119: libavcodec/libavcodec.so.61] Error 1
  

  so far I've removed --enable-libfdk_aac and --enable-libmp3lame with the same errors, and now it is erroring on libopus

  I thought -fPIC could be done with --enable-shared but it seems not the case

  version: ffmpeg 7.1.1

  command:

  PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
    --prefix="$HOME/ffmpeg_build" \
    --pkg-config-flags="--static" \
    --extra-cflags="-I$HOME/ffmpeg_build/include" \
    --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
    --extra-libs=-lpthread \
    --extra-libs=-lm \
    --bindir="$HOME/bin" \
    --enable-gpl \
    --enable-libfreetype \
    --enable-libharfbuzz \
    --enable-libopus \
    --enable-libvpx \
    --enable-libx264 \
    --enable-libx265 \
    --enable-nonfree \
    --enable-shared \
    --enable-avisynth \
    --enable-pic \
    --enable-version3 \
    --enable-ffplay \
    --enable-ffprobe
  

• FFMPEG : Invalid data found when processing input

  14 juillet, par Schüler

  I am unable to upload mp3 or mp4 is there any specific path format? Here is my code. I have tried this also ffmpeg -i Video/" + Name + " -ss 01:30 -r 1 -an -vframes 1 -f mjpeg Video/" + Name + ".jpg

  exec("ffmpeg -y -i Video/" + Name + " -map_metadata -1 -ab 192k Video/" + Name + ".jpg", function(err) {
              if (err) {console.log(err)}
          console.log('Done', {'Image' : 'Video/' + Name + '.jpg'});
          });
  

  Here is the error

  { Error: Command failed: ffmpeg -y -i Video/ac9358e25dd41a69e95a72d3e71e4881 -map_metadata -1 -ab 192k Video/ac9358e25dd41a69e95a72d3e71e4881.jpg
  ffmpeg version 4.1.1 Copyright (c) 2000-2019 the FFmpeg developers
    built with gcc 8.2.1 (GCC) 20190212
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-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-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    libavutil      56. 22.100 / 56. 22.100
    libavcodec     58. 35.100 / 58. 35.100
    libavformat    58. 20.100 / 58. 20.100
    libavdevice    58.  5.100 / 58.  5.100
    libavfilter     7. 40.101 /  7. 40.101
    libswscale      5.  3.100 /  5.  3.100
    libswresample   3.  3.100 /  3.  3.100
    libpostproc    55.  3.100 / 55.  3.100
  Video/ac9358e25dd41a69e95a72d3e71e4881: Invalid data found when processing input
  
      at ChildProcess.exithandler (child_process.js:275:12)
      at emitTwo (events.js:126:13)
      at ChildProcess.emit (events.js:214:7)
      at maybeClose (internal/child_process.js:925:16)
      at Socket.stream.socket.on (internal/child_process.js:346:11)
      at emitOne (events.js:116:13)
      at Socket.emit (events.js:211:7)
      at Pipe._handle.close [as _onclose] (net.js:557:12)
    killed: false,
    code: 1,
    signal: null,
    cmd: 'ffmpeg -y -i Video/ac9358e25dd41a69e95a72d3e71e4881 -map_metadata -1 -ab 192k Video/ac9358e25dd41a69e95a72d3e71e4881.jpg' }
  

• Can't import moviepy due to missing ffmpex.exe

  14 juillet, par SilentGrove_99

  I was trying to create an application with python using the moviepy library. I installed it using:

  pip install moviepy
  

  I found this from a MoviePy crash-course:

  # Import everything needed to edit video clips
  from moviepy.editor import *
  # or 
  from moviepy import *  # moviepy v2 after removal of editor
  

  After trying to run this line i get this error:

  Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 20:42:59) [MSC v.1500 32     bit (Intel)] on win32
  Type "help", "copyright", "credits" or "license" for more information.
  >>> # Import everything needed to edit video clips
  ... from moviepy.editor import *
  Traceback (most recent call last):
    File "", line 2, in 
    File "C:\Python27\lib\site-packages\moviepy\editor.py", line 22, in 
      from .video.io.VideoFileClip import VideoFileClip
    File "C:\Python27\lib\site-packages\moviepy\video\io\VideoFileClip.py", line 3, in 
      from moviepy.video.VideoClip import VideoClip
    File "C:\Python27\lib\site-packages\moviepy\video\VideoClip.py", line 20, in 
      from .io.ffmpeg_writer import ffmpeg_write_image, ffmpeg_write_video
    File "C:\Python27\lib\site-packages\moviepy\video\io\ffmpeg_writer.py", line 15, in 
      from moviepy.config import get_setting
    File "C:\Python27\lib\site-packages\moviepy\config.py", line 38, in 
      FFMPEG_BINARY = get_exe()
    File "C:\Python27\lib\site-packages\imageio\plugins\ffmpeg.py", line 86, in get_exe
      raise NeedDownloadError('Need ffmpeg exe. '
  imageio.core.fetching.NeedDownloadError: Need ffmpeg exe. You can download it by calling:
    imageio.plugins.ffmpeg.download()
  

  What is the problem here, and how can i fix it?

• Cutting multimedia files based on start and end time using ffmpeg

  14 juillet, par Kalaiyarasan

  I tried to cut the video using the start and end time of the video by using the following command:

  ffmpeg -ss 00:00:03 -t 00:00:08 -i movie.mp4 -acodec copy -vcodec copy -async 1 cut.mp4
  

  By using the above command I want to cut the video from 00:00:03 to 00:00:08. But it is not cutting the video between those times instead of that it is cutting the video with first 11 seconds.

• Error in writing video file using moviepy and ffmpeg

  13 juillet, par Divakar Sharma

  I have been working with moviepy library for the first time. I have a video clip around 7 hours long, and I'd like to clip it into small clips. I have a list of start and end time.

  video = VideoFileClip("videoFile.mp4")
  clips = []
  for cut in cuts:
     clip = video.subclip(cut[0], cut[1])
     clips.append(clip)
  clips
  clip = video.subclip("7:32:18", "7:38:38")
  clips.append(clip)
  for clip, title in zip(clips, title_list):
   clip.write_videofile(title + '.mp4', threads=8, fps=24, audio=True, codec='libx264',preset=compression)
  video.close()
  

  clips[] contain the start and end time for clipping. I have a list of title too which I have scraped from youtube. I have not included the two lists here but a small example could be:

  cuts = [('0:00', '2:26'),
   ('2:26', '5:00'),
   ('5:00', '7:15'),
   ('7:15', '10:57'),
   ('10:57', '18:00'),
   ('18:00', '18:22'),
   ('18:22', '19:57'),
   ('19:57', '20:37'),
   ('20:37', '28:27'),
   ('28:27', '40:32'),
   ('40:32', '49:57'),...
  title_list = ['Introduction (What is Todoist?), tech stack talk', 'Showing the final application (with dark mode!)', 'Installing create react app', "Clearing out what we don't need from create react app", "Let's get building our components!", 'Installing packages using Yarn', 'Building the Header component', 'Building the Content component',...
  

  OSError: [Errno 32] Broken pipe
  
  MoviePy error: FFMPEG encountered the following error while writing file Introduction(WhatisTodoist?),techstacktalkTEMP_MPY_wvf_snd.mp3:
  
  b'Introduction(WhatisTodoist?),techstacktalkTEMP_MPY_wvf_snd.mp3: Invalid argument\r\n'
  
  In case it helps, make sure you are using a recent version of FFMPEG (the versions in the Ubuntu/Debian repos are deprecated).
  

  Above is the error I am getting after running the write_videofile(). I have looked at the documentation and the issues on github, I tried updating the ffmpeg through pip too. I don't know why it can't write the audio file.