1. Ensure encoding profile matches Adobe specs. Non variable keyfarmes - make fixed interval.
2. Ensure you are using baseline encoded assets. Green screen is a sign of the wrong profile. Wrong profile will exibit all the issues you are seeing.
Defo an encoding problem.
Thanks, I will check those with the guys who do the encoding and see if it sheds any light anywhere.
I had a chat with the encoder guys and it looks like that is already in place - all bitrates use fixed keyframes and standard profiles. Only difference I can see is that the three lower bitrates use "Base" profile where the top bitrate uses "Main" profile as it has so much more data it needs it (apparently) - not sure what is in these profiles, but they are, I think, standard Adobe fare.
I'm wondering whether the different profile for 1024 could be part of the problem? I don't know much about the profiles, but I imagine they should all be the same. Do you know whether there would be a problem using "Main" for all of them?
In my 'experience' you should only be using baseline encoded assets if you are producing content for Android devices.
Main profile seemed to cause problems with our playback so we switched entirely to baseline. Now no problems in that respect.
I don't think you should be switching from baseline up to main either. Main is a much more complicated profile and it places b frames out of order so it will most likely affect the switching. Get your encoder guys to analyse the packets/metadata and send you a copy. From this it's easy to see any discrepencies.
I work for a large uk tv company and we stream renditions from 150k to 1200k (with 300, 400, 600, 800 between) - we stream all types of content and in most cases it looks fine from 600 upwards. Their reasoning is invalid.
We also have experienced issues with FMS 4.5.2 recently where switching doesn't work as it should. We were using a fixed GOP length but with scene detection which meant in some renditions the keyframes were out of sync.
Thanks, yes, it seems to be running well now I'm sticking with just the baseline assets. I'll chat through with them about the main stuff - also the fixed GOP length, though I'll have to google it first!