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• flutter integration with ffmpeg package for video stream recording using rtsp url

  16 avril, par Brijesh Gangwar

  Launching lib\main.dart on SM X115 in debug mode...
C:\Users\hp\AppData\Local\Pub\Cache\hosted\pub.dev\ffmpeg_kit_flutter_full_gpl-6.0.3\android\src\main\java\com\arthenica\ffmpegkit\flutter\FFmpegKitFlutterPlugin.java:157: error: cannot find symbol
    public static void registerWith(final io.flutter.plugin.common.PluginRegistry.Registrar registrar) {
                                                                                 ^
  symbol:   class Registrar
  location: interface PluginRegistry
C:\Users\hp\AppData\Local\Pub\Cache\hosted\pub.dev\ffmpeg_kit_flutter_full_gpl-6.0.3\android\src\main\java\com\arthenica\ffmpegkit\flutter\FFmpegKitFlutterPlugin.java:651: error: cannot find symbol
    protected void init(final BinaryMessenger messenger, final Context context, final Activity activity, final io.flutter.plugin.common.PluginRegistry.Registrar registrar, final ActivityPluginBinding activityBinding) {
                                                                                          ^
  symbol:   class Registrar
  location: interface PluginRegistry
2 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':ffmpeg_kit_flutter_full_gpl:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
> Run with --info option to get more log output.
> Run with --scan to get full insights.

BUILD FAILED in 15s

┌─ Flutter Fix ───────────────────────────────────────────────────────────────────────────────────┐
│ [!] Consult the error logs above to identify any broken plugins, specifically those containing  │
│ "error: cannot find symbol..."                                                                  │
│ This issue is likely caused by v1 embedding removal and the plugin's continued usage of removed │
│ references to the v1 embedding.                                                                 │
│ To fix this error, please upgrade your current package's dependencies to latest versions by     │
│ running `flutter pub upgrade`.                                                                  │
│ If that does not work, please file an issue for the problematic plugin(s) here:                 │
│ https://github.com/flutter/flutter/issues                                                       │
└─────────────────────────────────────────────────────────────────────────────────────────────────┘
Error: Gradle task assembleDebug failed with exit code 1

Exited (1). 


  


  how to solve this

  


  I tried to use widget_record_video package instead but it is still depended on flutter ffmpeg package.
I have already tried to install app on real device.
Help me out to solve this error

  


• How to replace the video track in a video file with a still image ?

  22 février 2021, par cornerstore

  I am trying to use ffmpeg to replace the video track in a video file with a still image. I tried some commands I got from other questions such as the one here

  


  ffmpeg -i x.png -i orig.mp4 final.mp4

  


  ffmpeg -r 1/5 -i x.png -r 30 -i orig.mp4 final.mp4

  


  But these didn't work. I'm not sure which of these arguments are required or not. The output should be accepted by YouTube as a valid video - I was able to simply remove the video track, but apparently they don't let you upload a video without a video track.

  


• Add support for playing Audible AAXC (.aaxc) files [PATCH v4]

  1er janvier 2000, par Vesselin Bontchev

  Add support for playing Audible AAXC (.aaxc) files [PATCH v4]
  The AAXC container format is the same as the (already supported) Audible
  
  AAX format but it uses a different encryption scheme.
  Note : audible_key and audible_iv values are variable (per file) and are
  
  externally fed.
  It is possible to extend https://github.com/mkb79/Audible to derive the
  
  audible_key and audible_key values.
  Relevant code :
  def decrypt_voucher(deviceSerialNumber, customerId, deviceType, asin, voucher) :
  
      buf = (deviceType + deviceSerialNumber + customerId + asin).encode("ascii")
  
      digest = hashlib.sha256(buf).digest()
  
      key = digest[0:16]
  
      iv = digest[16 :]
      # decrypt "voucher" using AES in CBC mode with no padding
  
      cipher = AES.new(key, AES.MODE_CBC, iv)
  
      plaintext = cipher.decrypt(voucher).rstrip(b"\x00")  # improve this !
  
      return json.loads(plaintext)
  The decrypted "voucher" has the required audible_key and audible_iv
  
  values.
  Update (Nov-2020) : This patch has now been tested by multiple folks -
  
  details at the following URL :
  https://github.com/mkb79/Audible/issues/3
  Signed-off-by : Vesselin Bontchev <vesselin.bontchev@yandex.com>
  

  • [DH] libavformat/isom.h
  • [DH] libavformat/mov.c