We want to synchronize multiple devices that stream mpeg-ts over SRT, we have noticed that we do not get perfect sync when relying on the mpeg-ts clock retrieval.
The devices are AXIS cameras, and for H.264 we can ask the cameras to embed timestamp information in SEI header in a way that AXIS dictates: Trigger data | Network video | VAPIX® Library
We then use these timestamps to sync multiple devices later in our processing pipeline.
But. Axis does not provide these for H.265. We can dig out a NTP based timestamp via some ONVIF header extension, but we have no clear way of embedding these into the H.265. Do you guys have any idea of what a nice way forward would be?
Could something similar like the
update-timecode property on
h264parse be added to
h265parse ? Would that give us what we need? Does anyone have any pointers on how one would implement that in that case?
Or am I missing some simpler way?