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• Create muted video and black screen video with FFmpeg on OS X

  22 septembre 2017, par user2685832

  I’m trying to use FFmpeg on OS X to generate the following from a local mp4-file :

  • A copy of the original video with no audio
  • A copy of the original video with audio but without visuals (a black screen instead). This file also needs to be in mp4 format.

  After reading through the documentation I am struggling to get the terminal commands right. To remove the audio I have tried this command without any success :

      ffmpeg -i file.mp4 -map 0:0 -map 0:2 -acodec copy -vcodec copy

  Could anyone guide me towards how to accomplish this ?

  Thanks !

• how to install portaudio19-dev and ffmpeg on ubuntu WSL

  28 mai 2021, par Joshua Aldrich Edbert

  I'm a windows user trying to run a command from ubuntu 20.04 LTS release on windows.

  


  sudo apt-get install gcc portaudio19-dev python3-dev ffmpeg


  


  After asking me to input a password, the terminal showed :

  


  reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package portaudio19-dev
E: Unable to locate package ffmpeg


  


  I'm not sure what happened as I'm new to this world. Any help would be appreciated !

  


• FFMPEG library Integration unsuccess

  1er septembre 2017, par Alok Kumar Verma

  I’m stuck with the integration of the FFMPEG file. I’m using Android Studio 2.3.3

  I’ve followed this link and hence got to know how to do this but all I’m getting is a failure.

  Links

  1. How to integrate the FFMPEG in your android
  2. Integrating android FFMPEG

  Now I"ve my ndk installed in this path : /Users/alok/Library/Android/sdk/ndk-bundle

  And I’ve downloaded the newest version of the FFMPEG i.e., 3.3.3 unzipped it in the sources folder of ndk-bundle

  Now I’ve followed this and implemented everything as said.

  • Editing the Configure File using TEXTVIEW in my mac

  • Creating a file name build_android.sh and copy pasting the given code. However I’ve changed the NDK path in my case in the code the code is here

    NDK=/Users/alok/Library/Android/sdk/ndk-bundle
SYSROOT=$NDK/platforms/android-23/arch-arm/
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64

  • Now opening the folder through terminal and then typing this command sudo chmod +x build_android.sh followed by this sudo ./build_android.sh

  The result is : No android name folder created inside under the folder FFMPEG 3.3.3 in this root i.e., /ndk-bundle/sources/ffmpeg 3.3.3/

  and the terminal shows this output :

  ./configure: line 3341: syntax error near unexpected token `2'

  ./configure: line 3341:

  DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)''
Makefile:2: config.mak: No such file or directory
Makefile:67: /common.mak: No such file or directory
Makefile:114: /libavutil/Makefile: No such file or directory
Makefile:114: /library.mak: No such file or directory
Makefile:116: /doc/Makefile: No such file or directory
Makefile:206: /tests/Makefile: No such file or directory
make: *** No rule to make target /tests/Makefile'. Stop.

  Hence I’m not been able to move next due to this which creating a JNI folder and stuff. I’m a beginner with FFMPEG and want to integrate it.

  NOTE : I’ve already used this library in my gradle

  compile ‘com.writingminds:FFmpegAndroid:0.3.2’

  For easy approach and things are working fine too but due to the older version I’m getting wrong outputs, so need to update it and there is one way and this is the way to do it.