To address longer buffering times, I have several strategies to share:

1. **Adaptive Bitrate Streaming (ABR)**: Implement ABR to automatically adjust video quality based on the user's network conditions. ExoPlayer supports this with DASH, HLS, and Smooth Streaming formats.
2. **Pre-buffering**: Use pre-buffering to load content before playback begins, ensuring a smoother experience.
3. **Optimize Buffer Settings**: Adjust the buffer size settings in ExoPlayer to find the right balance between buffering time and playback smoothness.
4. **Network Quality Detection**: Detect network quality in real-time and adjust playback settings accordingly.
5. **User Feedback**: Provide users with feedback about the buffering status. Inform them if buffering fails and offer options to retry or check their connection.
6. **Offline Playback**: Allow users to download content for offline playback, reducing dependency on network conditions.
7. **Error Handling and Retries**: Implement robust error handling and retry logic for network errors to ensure seamless recovery from buffering issues.

By employing these strategies, we can effectively tackle longer buffering times and ensure smooth and efficient media playback.