Cross region Media Live unstable output quality

The messages you're seeing in CloudWatch indicate that there are PTS (Presentation Time Stamp) jitter issues detected in the stream. This can lead to synchronization problems between audio and video, resulting in unstable stream quality and audio/video out-of-sync issues.

Theses are the steps i usually use to address this type of issues and most of the time it is always a Network issues:-

Ensure that the network connectivity between your EC2 instance and MediaLive channel is stable. Network issues can cause packet loss and jitter, leading to synchronization problems. You can use network monitoring tools to check for network stability and performance.

Stream Encoding Settings: Verify the encoding settings of your RTMP stream on the EC2 instance. Ensure that the video and audio encoding parameters are configured correctly and optimized for streaming. Make sure that the output stream format and bitrate are compatible with MediaLive's input requirements.

MediaLive Channel Configuration: Review the configuration of your MediaLive channel. Ensure that the input settings, including video and audio codecs, frame rates, and resolutions, match the specifications of the incoming RTMP stream. Make any necessary adjustments to align the settings between the source stream and the MediaLive channel.

PTS Jitter Detection: The messages indicating "PTS jitter detected" and "PTS jitter cleared" suggest that MediaLive is detecting variations in the presentation time stamps of the stream packets. This can be caused by irregularities in the source stream or network latency. Analyze the source stream for any inconsistencies and investigate potential network latency issues.

Test with Different Sources: If possible, try pulling the RTMP stream from different sources or using alternative streaming methods to see if the synchronization issues persist. This can help determine if the problem is specific to the current source or configuration.

MediaLive Metrics and Logs: Utilize MediaLive's built-in metrics and logs to gather more detailed information about the stream's performance and any detected issues. Look for metrics related to input stream health, audio/video synchronization, and PTS jitter to gain insights into the root cause of the problem.

By following these steps and closely monitoring the stream's performance, you should be able to identify and address any synchronization issues between your RTMP stream and MediaLive channel.