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• How can I add individual thumbnails to several MKV files (possibly using ffmpeg) ? [closed]

  1er juillet 2024, par oli_vi_er

  I would like to add thumbnails to many MKV files.

  


  I know how to use MKVToolnix GUI to achieve this, but I'd need to do it for dozens of files, so I'm wondering if there's a quicker way to do it in batch.

  


  I think that it may be possible with ffmpeg, and I already have the JPEG images with the same name as the MKVs, but I don't really know how to use ffmpeg's command lines, let alone batch processing.

  


  So, is it possible to do this ?

  


• Android ffmpeg command shows java.io.IOException : Error running exec()

  13 avril 2015, par Jamal

  I would like to use ffmpeg binary executable in my Android project.for this purpose I have used pre built ffmpeg Android binary from this(https://github.com/hiteshsondhi88/ffmpeg-android/releases/download/v0.3.3/prebuilt-binaries.zip) link.

  As per procedure I have to place the executable file into /data/data/com.example.rampedsample directory, here com.example.rampedsample is my project packageName.I couldn’t find this location in my device as it is un rooted.So I pasted that executable into Android emulator’s com.example.rampedsample directory using DDMS perspective.

  In my Activity used the below code

   try {
  
              Process p = Runtime.getRuntime().exec("/data/data/com.example.rampedsample/ffmpeg "+Environment.getExternalStorageDirectory()+"/Movies/ramp_video.mp4"
  
                      +" -map 0:v -codec copy "+Environment.getExternalStorageDirectory()+"/Movies/ramp_video2.mp4");
  
  
  
  
  
          } catch (IOException e) {
  
              // TODO Auto-generated catch block
  
              e.printStackTrace();
  
          }

  AndroidManifest permission

  error

  04-13 16:59:55.314: W/System.err(11387): java.io.IOException: Error running exec(). Command: [/data/data/com.example.rampedsample/ffmpeg, /mnt/sdcard/Movies/ramp_video.mp4, -map, 0:v, -codec, copy, /mnt/sdcard/Movies/ramp_video2.mp4] Working Directory: null Environment: null
  
  04-13 16:59:55.314: W/System.err(11387):    at java.lang.ProcessManager.exec(ProcessManager.java:211)
  
  04-13 16:59:55.355: W/System.err(11387):    at java.lang.Runtime.exec(Runtime.java:168)
  
  04-13 16:59:55.355: W/System.err(11387):    at java.lang.Runtime.exec(Runtime.java:241)
  
  04-13 16:59:55.355: W/System.err(11387):    at java.lang.Runtime.exec(Runtime.java:184)
  
  04-13 16:59:55.355: W/System.err(11387):    at com.example.rampedsample.MainActivity.onCreate(MainActivity.java:18)
  
  04-13 16:59:55.355: W/System.err(11387):    at android.app.Activity.performCreate(Activity.java:5008)
  
  04-13 16:59:55.355: W/System.err(11387):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)

• ffmpeg for Android build shows error

  2 avril 2015, par Jamal

  I would like to build ffmpeg for Android so I am following a steps from this tutorial http://www.roman10.net/how-to-build-ffmpeg-with-ndk-r9/

  What I tried

  1. downloaded android-ndk-r10d-darwin-x86_64.bin for Mac 64 bit OS
  2. decompressed/extract the NDK archieve file
  3. downloaded ffmpeg 2.6.1
  4. decompressed/extract the `ffmpeg 2.6.1 file
  5. copied the ffmpeg 2.6.1 extracted folder and pasted into android-ndk-r10d/sources/ location

  6. Opened the ffmpeg-2.6.1/configure file and replaced this code

     SLIBNAME_WITH_MAJOR=’$(SLIBNAME).$(LIBMAJOR)’
     LIB_INSTALL_EXTRA_CMD=’$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"’
     SLIB_INSTALL_NAME=’$(SLIBNAME_WITH_VERSION)’
     SLIB_INSTALL_LINKS=’$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)’

  with

  SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
  
  LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
  
  SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
  
  SLIB_INSTALL_LINKS='$(SLIBNAME)'

  7.Created the build_android.shfile inside ffmpeg-2.6.1 folder so now it be like this ffmpeg-2.6.1/build_android.sh.
  instead of this NDK=$HOME/Desktop/adt/android-ndk-r9 line I set current NDK location
  8. executed this sudo chmod +x build_android.sh command

  9. while executing this command ./build_android.sh got below error

  Hubs-Mac-mini:ffmpeg-2.6.1 hubmaci7$ ./build_android.sh
  Configured with : —prefix=/Applications/Xcode.app/Contents/Developer/usr —with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/4.2.1
  Configured with : —prefix=/Applications/Xcode.app/Contents/Developer/usr —with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/4.2.1
  /hubmaci7/Pictures/Hubino/Jamal/android-ndk-r10d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc is unable to create an executable file.
  C compiler test failed.

  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "config.log" produced by configure as this will help
  
  solve the problem.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Hubs-Mac-mini:ffmpeg-2.6.1 hubmaci7$ 

  please provide a needed solution for me to solve this errors