I've got a weird issue with one of my movie files. I'm trying to sync it to the Plex app running in iOS. I've tried several devices with the same file and they are all fail. But it only fails when choosing low quality, medium works fine. Also other files work set to low fine as well so does seem to be specific to this one file. The error shown in the Sync Status screen in the web UI is 'The transcoder was unable to process this media'. The error that appears in the Plex iOS app is similarly lacking in specific details and is 'The transcoder encountered an error.'
I've tried to look in the server log files but can't see anything that would make any sense to me to know where to start looking! Any help would be appreciated. Log file attached with debug logging enabled.
Plex Media Server: 1.1.4.2757
Mac OS X: 10.12.0 (Sierra only installed recently, problem was also happening under 10.11)