For android you can apply following workaround since its support is finished

1. download aar (Android) from here https://artifactory.cronapp.io/libs-snapshot/com/arthenica/mobile-ffmpeg-full-gpl/4.4.LTS/
   2. manually install the file and add to your cache

   3. modify your build.gradle apply version 4.4.lts

   4. app/build.gradle apply your version 4.4.lts

   gradlew clean cache

   gradlew build --info