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• Error when initializing webcam with ffmpeg

  29 janvier 2018, par Daniel

  I am trying to set up a webcam and stream to localhost, using ffmpeg.

  Here is a command I put into a terminal :

  ffmpeg -f alsa -ac 2 -i hw:1,0 -f v4l2 -s 1280x720 -r 10 -i /dev/video1 -vcodec libx264 -pix_fmt yuv420p -preset ultrafast -r 25 -g 20 -b:v 2500k -codec:a libmp3lame -ar 44100 -threads 6 -b:a 11025 -bufsize 512k -f flv rtmp://localhost:80/

  And here is what happened :

  ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1 16.04.4) 20160609
  configuration : —prefix=/usr —extra-version=0ubuntu0.16.04.1 —build-suffix=-ffmpeg —toolchain=hardened —libdir=/usr/lib/x86_64-linux-gnu —incdir=/usr/include/x86_64-linux-gnu —cc=cc —cxx=g++ —enable-gpl —enable-shared —disable-stripping —disable-decoder=libopenjpeg —disable-decoder=libschroedinger —enable-avresample —enable-avisynth —enable-gnutls —enable-ladspa —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libmodplug —enable-libmp3lame —enable-libopenjpeg —enable-libopus —enable-libpulse —enable-librtmp —enable-libschroedinger —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxvid —enable-libzvbi —enable-openal —enable-opengl —enable-x11grab —enable-libdc1394 —enable-libiec61883 —enable-libzmq —enable-frei0r —enable-libx264 —enable-libopencv
  libavutil 54. 31.100 / 54. 31.100
  libavcodec 56. 60.100 / 56. 60.100
  libavformat 56. 40.101 / 56. 40.101
  libavdevice 56. 4.100 / 56. 4.100
  libavfilter 5. 40.101 / 5. 40.101
  libavresample 2. 1. 0 / 2. 1. 0
  libswscale 3. 1.101 / 3. 1.101
  libswresample 1. 2.101 / 1. 2.101
  libpostproc 53. 3.100 / 53. 3.100

  ALSA lib pcm_hw.c:1700 :(_snd_pcm_hw_open) Invalid value for card

  [alsa @ 0x21c45c0] cannot open audio device hw:1,0 (No such file or directory)

  hw:1,0 : Input/output error

• Missing ffmpeg in deployed application

  30 décembre 2017, par Dexstrum

  I have created a python GUI which utilizes ffmpy and tkinter. It works fine running in PyCharm and also in py2app’s alias mode. After I deployed it using py2app and ran the program, it loaded up, but nothing happened. After doing some digging, I found that the error was ’ffmpeg executable is missing.’

  I tried using pyinstaller to remedy the issue, but the application did not even run.

  The warning.txt output file gave me this :

  missing module named org - imported by copy
  
  missing module named _sha512 - imported by hashlib
  
  missing module named _sha256 - imported by hashlib
  
  missing module named _md5 - imported by hashlib
  
  missing module named _sha - imported by hashlib
  
  missing module named 'org.python' - imported by pickle, xml.sax
  
  missing module named _subprocess - imported by subprocess
  
  missing module named msvcrt - imported by subprocess, getpass, youtube_dl.utils
  
  missing module named riscosenviron - imported by os
  
  missing module named riscospath - imported by os
  
  missing module named riscos - imported by os
  
  missing module named ce - imported by os
  
  missing module named _emx_link - imported by os
  
  missing module named os2 - imported by os
  
  missing module named nt - imported by os, ntpath
  
  missing module named 'urllib.parse' - imported by pafy.util, youtube_dl.compat, pafy.backend_internal, pafy.backend_shared, pafy.playlist
  
  missing module named _winreg - imported by mimetypes, urllib, winreg, platform
  
  missing module named OverrideFrom23 - imported by Carbon.Res
  
  missing module named SOCKS - imported by ftplib
  
  missing module named rourl2path - imported by urllib
  
  missing module named _dummy_threading - imported by dummy_threading
  
  missing module named 'urllib.error' - imported by pafy.pafy, pafy.util, youtube_dl.compat, pafy.backend_shared
  
  missing module named 'urllib.request' - imported by pafy.g, youtube_dl.compat, pafy.backend_shared
  
  missing module named ElementC14N - imported by xml.etree.ElementTree
  
  missing module named 'java.lang' - imported by platform, xml.sax._exceptions
  
  missing module named _xmlplus - imported by xml
  
  missing module named sgi - imported by pty
  
  missing module named vms_lib - imported by platform
  
  missing module named java - imported by platform
  
  missing module named winreg.HKEY_LOCAL_MACHINE - imported by winreg, platform
  
  missing module named winreg.CloseKey - imported by winreg, platform
  
  missing module named winreg.QueryValueEx - imported by winreg, platform
  
  missing module named winreg.OpenKeyEx - imported by winreg, platform
  
  missing module named win32pipe - imported by platform
  
  missing module named netbios - imported by uuid
  
  missing module named win32wnet - imported by uuid
  
  missing module named lazy_extractors - imported by youtube_dl.extractor
  
  missing module named Crypto - imported by youtube_dl.downloader.hls
  
  missing module named xattr - imported by youtube_dl.utils
  
  missing module named 'dbm.ndbm' - imported by future.moves.dbm.ndbm
  
  missing module named gdbm - imported by anydbm, future.moves.dbm.gnu
  
  missing module named 'dbm.gnu' - imported by future.moves.dbm.gnu
  
  missing module named 'dbm.dumb' - imported by future.moves.dbm.dumb
  
  missing module named bsddb3 - imported by bsddb
  
  missing module named _pybsddb - imported by bsddb, bsddb.db
  
  missing module named 'test.support' - imported by future.moves.test.support
  
  missing module named reprlib.recursive_repr - imported by reprlib, future.backports.misc
  
  missing module named _thread.get_ident - imported by _thread, future.backports.misc
  
  missing module named _datetime - imported by future.backports.datetime
  
  missing module named 'urllib.response' - imported by youtube_dl.compat

  I am not sure where to go from here. I don’t know how to include ffmpeg into the deployed application, and when I include the modules in the setup.py file it throws me a different error. Is there a reason why the py2app is not deploying the application with ffmpeg ?

• FFmpeg error loading shared libraries libx265.so.113

  19 février 2019, par SenDjasni

  I recently installed libx265, I dont know what happened, but when I execute ffmpeg command I got this error :

   ffmpeg: error while loading shared libraries: libx265.so.113: cannot open shared object file: No such file or directory

  I google it but got nothing specific about it.

  I also executed this command : ldd $(which ffmpeg) and got the following output :

  linux-vdso.so.1 =>  (0x00007ffd147e7000)
  
  libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f1cea052000)
  
  libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f1ce9e30000)
  
  libxcb-xfixes.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-xfixes.so.0 (0x00007f1ce9c27000)
  
  libxcb-shape.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-shape.so.0 (0x00007f1ce9a23000)
  
  libasound.so.2 => /usr/lib/x86_64-linux-gnu/libasound.so.2 (0x00007f1ce9723000)
  
  libx265.so.113 => not found
  
  libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f1ce9419000)
  
  liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f1ce91f7000)
  
  libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f1ce8fdc000)
  
  libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f1ce8dbf000)
  
  libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f1ce89f6000)
  
  /lib64/ld-linux-x86-64.so.2 (0x0000559e03a1d000)
  
  libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f1ce87f1000)
  
  libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f1ce85eb000)
  
  librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f1ce83e3000)

  Could someone help me ?