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• Embedding "Dolby Digital Plus with Dolby Atmos" into MP4 using ffmpeg

  8 mars, par Krystian

  How can I encode Dolby Atmos into MP4 ? I am using this command ffmpeg -i input.mp4 -i input.ec3 -map 0:v -map 1:a -c:v copy -c:a copy -disposition:a default -metadata:s:a:0 complexity_index=16 -metadata:s:a:0 title="Dolby Atmos" output_test.mp4 I have to provide every single piece of data that is inside this EC3 file. I have noticed that when I am running this command the MP4 file contains actual Dolby Atmos stream but it's missing complexity index. Raw EC3 file has Complexity Index set to 16 but after adding it to MP4 file the complexity index is not present and this MP4 is not identified as a video with proper Dolby Atmos stream

  


  I thought that after using this command, complexity index will be added correctly. I don't want to use MKV but it looks like I will have to do that.

  


• FFMPEG Kit issue in Banuba Video SDK : "FFmpegKit failed to start on brand"

  10 mai 2023, par Vivek Makwana

  I am trying to integrate Banuba Video Editor sdk in flutter.

  


  The issue i am facing is as below

  


  Banuba sdk works with native code for Android in Flutter

  


  So Banuba requires FFMPEG dependency to define in Native Android

  


  And I am already using 'ffmpeg_kit_flutter' plugin for flutter.

  


  So both the FFMPEG kits are conflicted and some of the functions are not found. due to that I am receiving the below error.

  


  When the app is launched I am receiving this Crash as mentioned

  


  **java.lang.Error: FFmpegKit failed to start on brand: google, model: sdk_gphone_x86, device: generic_x86_arm, api level: 30, abis: x86 armeabi-v7a armeabi, 32bit abis: x86 armeabi-v7a armeabi, 64bit abis: .&#xA;**  at com.arthenica.ffmpegkit.NativeLoader.loadLibrary(NativeLoader.java:50)&#xA;    at com.arthenica.ffmpegkit.NativeLoader.loadFFmpegKit(NativeLoader.java:189)&#xA;    at com.arthenica.ffmpegkit.FFmpegKitConfig.<clinit>(FFmpegKitConfig.java:145)&#xA;    at com.arthenica.ffmpegkit.FFmpegKitConfig.enableFFmpegSessionCompleteCallback(FFmpegKitConfig.java:864)&#xA;    at com.arthenica.ffmpegkit.flutter.FFmpegKitFlutterPlugin.registerGlobalCallbacks(FFmpegKitFlutterPlugin.java:168)&#xA;    at com.arthenica.ffmpegkit.flutter.FFmpegKitFlutterPlugin.init(FFmpegKitFlutterPlugin.java:652)&#xA;    at com.arthenica.ffmpegkit.flutter.FFmpegKitFlutterPlugin.onAttachedToActivity(FFmpegKitFlutterPlugin.java:198)&#xA;    at io.flutter.embedding.engine.FlutterEngineConnectionRegistry.attachToActivityInternal(FlutterEngineConnectionRegistry.java:351)&#xA;    at io.flutter.embedding.engine.FlutterEngineConnectionRegistry.attachToActivity(FlutterEngineConnectionRegistry.java:324)&#xA;    at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:194)&#xA;    at io.flutter.embedding.android.FlutterActivity.onCreate(FlutterActivity.java:498)&#xA;    at com.sound.it.MainActivity.onCreate(MainActivity.kt:43)&#xA;    at android.app.Activity.performCreate(Activity.java:8000)&#xA;    at android.app.Activity.performCreate(Activity.java:7984)&#xA;    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)&#xA;    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3422)&#xA;    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)&#xA;    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)&#xA;    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)&#xA;    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)&#xA;    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)&#xA;    at android.os.Handler.dispatchMessage(Handler.java:106)&#xA;    at android.os.Looper.loop(Looper.java:223)&#xA;    at android.app.ActivityThread.main(ActivityThread.java:7656)&#xA;    at java.lang.reflect.Method.invoke(Native Method)&#xA;    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)&#xA;    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)&#xA;**Caused by: java.lang.UnsatisfiedLinkError: dlopen failed: cannot locate symbol "av_log_default_callback" referenced by "/data/app/~~umF3qlB9U53L4peU9nKYuQ==/com.sound.it-agqiFlNmMe17AHMK5gYIHw==/lib/x86/libffmpegkit.so"...**&#xA;    at java.lang.Runtime.loadLibrary0(Runtime.java:1087)&#xA;    at java.lang.Runtime.loadLibrary0(Runtime.java:1008)&#xA;    at java.lang.System.loadLibrary(System.java:1664)&#xA;    at com.arthenica.ffmpegkit.NativeLoader.loadLibrary(NativeLoader.java:48)&#xA;</clinit>

  


  Looking for the solutions

  


• How do I resolve ffmpeg concat command error "unknown keyword..." ?

  6 décembre 2023, par Scorb

  I am trying to concatenate two video files using ffmpeg, and I am receiving an error.

  


  To eliminate compatibility issues between the two videos, I have been concatenating the same video with itself, and the same error persists.

  


  ffmpeg \
  -f concat \
  -safe 0 \
  -i intro_prepped.avi intro_prepped.avi \
  -c copy \
  concat.avi  


  


  And the error output I receive is....

  


  


  [concat @ 0x220d420] Line 1 : unknown keyword 'RIFFf� ?'
intro_prepped.avi : Invalid data found when processing input

  


  


  I have tried various combinations of concat flags and have not been able to get it to work. Has anyone seen this error before ?