mpegtsmux problem

[Clarke, Trevor]

I'm attempting to mux a number of h.264 streams into an MPEG TS and write it to disk. I have a bin for each stream which generates the h.264 (data is pushed in via an appsrc, some processing occurs, and the compression is done by either a hardware plugin or x264enc).
The src from each bin is fed into an mpegtsmux and the output goes to a tee with a multifilesink and udpsink.

I'm seeing the appsrc's buffers filling up a lot and I'm thus dropping packets regularly. I looked at the output files and generated timeline plots of the PTS values for each stream (testing with 3 in the example below). The streams are generated a 10fps and the caps for the h.264 streams represent this. Looking at the cache files I see the following (first line represents 0.1 second ticks, where the frames would ideally fall)

Ticks  |          |          |          |         |
Str1   *                              *
Str2                  *                                *
Str3                           *

I'm seeing some expected jitter but it looks like the interleaving is putting 1 frame per tick across all streams not 1 frame per stream per tick. Thoughts on what might be causing this behavior?
----------------------
Trevor R.H. Clarke
Software Engineer, Ball Aerospace
(937)320-7087




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