We are using Wowza's GoCoder on iPhones (latest update) to record live streams on our Wowza Striming Engine (4.0.1). We have done this for some time with our old 3.5 Wowza server, and the previous version of the GoCoder without any problem. Recently, we are getting many (about 50%) of the recorded files corrupted. When converting them with FFmpeg we always get this error: "Invalid SampleDelta in STTS", and "multiple fourcc not supported" (I saw a track with the same error from 7 months ago, with no response). Also, many has this error too: "Queue input is backward in time" and various other errors.
I am not sure if the problem started after upgrading the server, or the GoCoder since we upgraded them in about the same time.