Synchronized RTSP streams freeze after a few hours

Application Development
1

Hello everyone, I’m working on synchronizing two RTSP streams to capture stereo video every 30 seconds. Initially, everything functions smoothly, with frames synchronized to the millisecond during the first hour. However, after that, I occasionally encounter frozen frames.
This is my current pipeline:

gst-launch-1.0 -e
rtspsrc location=‘{CHANNEL_1}’ ! rtph265depay ! h265parse ! decodebin ! videoflip method=counterclockwise ! m.sink_0
rtspsrc location=‘{CHANNEL_2}’ ! rtph265depay ! h265parse ! decodebin ! videoflip method=counterclockwise ! m.sink_1
videomixer name=m sink_1::xpos=1080 ! x265enc ! h265parse ! splitmuxsink async-finalize=true location=‘videos/{CAGE_NAME}_%05d.hevc’ max-size-time={VIDEO_DURATION_SECONDS}

Any insights or suggestions would be greatly appreciated!