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• Trying to use the arcade library on Python3 with Debian 10 errors with pyglet_ffmpeg

  30 mars 2020, par Colin

  I’ve been trying to use the arcade library this morning with python3 but keep getting nothing but errors.

  My environment is Debian 10 (buster)

  I checked first to ensure I have python 3 installed, this confirmed as Python 3.7.3

  I double checked (according to the arcade library website arcade linux installation instructions and ran the install for python3 to make sure that pip and the required libraries were installed.

  I then ran the command to install the library

  sudo pip3 install arcade

  And to test it, copied and pasted the happy_face.py example. However when I tried to run it I got a slew of errors. This seems to be directly related to the arcade installation and if I just run a python script (test.py) with just one line

  import arcade

  At the terminal with

  python3 test.py

  I get the following errors

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavcodec.so.58.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavformat.so.58.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libswresample.so.3.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavfilter.so.7.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavutil.so.56.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libswscale.so.5.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavcodec.so.58.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavformat.so.58.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libswresample.so.3.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavfilter.so.7.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libavutil.so.56.*

  Unable to find match for ffmpeg sound library at expected location :
  /usr/local/lib64/python3.7/dist-packages/pyglet_ffmpeg2/linux_x86_64/libswscale.so.5.*

  I have used the following terminal command to identify the version of OpenGL installed

  glxinfo | grep "OpenGL version"

  Which returned

  OpenGL version string : 3.3 (Compatibility Profile) Mesa 18.3.6

  I have also tried the terminal command

  sudo pip3 install pyglet-ffmpeg

  Which returns

  Requirement already satisfied : pyglet-ffmpeg in
  /usr/local/lib/python3.7/dist-packages (0.1.4)

  Requirement already satisfied : pyglet>=1.4.0a1 in
  /usr/local/lib/python3.7/dist-packages (from pyglet-ffmpeg) (1.5.0)

  Requirement already satisfied : future in
  /usr/local/lib/python3.7/dist-packages (from
  pyglet>=1.4.0a1->pyglet-ffmpeg) (0.18.2)

  Any assistance would be appreciated. I’ve tried to be as concise as I can, but if more information is required, I’ll gladly supply it.

• FFMPEG Padding 1 pixel

  21 juillet 2022, par Rittari771

  I've been playing around with the values in my padding code, but cannot seem to get the paddings to match exactly 1:1.
If we look really closely, it is 1 pixel off from
left side,
but right side seems fine (1:1 with the violet padding)

  


  I did get the left side to match, but then the right side is bad... i cant find a point between where both are equal.

  


  What can i do to match them ? Here is my code :

  


  ffmpeg -i video1.mp4 -filter_complex "pad=iw*1.1:0:ow*0.5:0:violet,scale=1080x1270" -y video1_padded.mp4
ffmpeg -i video2.mp4 -filter_complex "pad=iw*1.1:0:ow*0.5:0:cyan,scale=1080x650" -y video2_padded.mp4
ffmpeg -i video1_padded.mp4 -i video2_padded.mp4 -filter_complex "vstack=inputs=2" -y finalproduct.mp4


  


• problem compiling ffmpeg for iFrameExtractor

  11 septembre 2012, par Robin Rye

  I'm trying to compile the ffmpeg by using the make and build files in iFrameExtractor example. firstly i tried to follow the readme file on the github, which only says to run the ./build_universal in ffmpeg folder. it did not work

  i then tried to follow the info in INSTALL without success. i then tried doing the stuff in INSTALL followed by the ./build_universal which didn't work. All the *.a files that are imported to the project exists until the end of the build sequence. when the lipo commands in build_universal are run, which i guess concat the .a files for the different architectures(?). anyhow these leave the following errors :

  lipo: specifed architecture type (armv6) for file (armv6/libavcodec.a) does not match it's cputype (16777223) and cpusubtype (3) (should be cputype (12) and cpusubtype (6))
  
  lipo: specifed architecture type (armv6) for file (armv6/libavdevice.a) does not match it's cputype (16777223) and cpusubtype (3) (should be cputype (12) and cpusubtype (6))
  
  lipo: specifed architecture type (armv6) for file (armv6/libavformat.a) does not match it's cputype (16777223) and cpusubtype (3) (should be cputype (12) and cpusubtype (6))
  
  lipo: specifed architecture type (armv6) for file (armv6/libavutil.a) does not match it's cputype (16777223) and cpusubtype (3) (should be cputype (12) and cpusubtype (6))
  
  lipo: specifed architecture type (armv6) for file (armv6/libswscale.a) does not match it's cputype (16777223) and cpusubtype (3) (should be cputype (12) and cpusubtype (6))

  i can get the project to compile for simulator if i only use ./build_armv7 but if i run the universal the .a files are removed in the end. and only using doesn't work to build for iphone 4 .