Amazon is intentionally sabotaging Roku?
Audio sync is 5 seconds ahead of video on only some Amazon Video programs (I'm new to both Amazon Video and the Ultra, so thus far I've only noticed this issue on all episodes of both seasons of "Richard Hammond's Crash Course") and only on my Roku Ultra. Please help!
Even on the problematic programs on my Ultra, every once in a while the sync on the problematic program is good for some reason (always when first started).
The problematic Amazon Video programs always have perfect sync on my PS4, and *other* content has good audio synch on Amazon Video on my Ultra. Other apps on my Ultra have perfect audio sync. Both the Ultra and the PS4 are connected to the my soundbar via identical brand new optical cables. (And I just tried connecting a different brand new optical cable to my Ultra; no change).
Edit: And usually the Ultra and PS4 are connected to my soundbar via the same Optical switch, but I just tried directly connecting the Ultra to my soundbar and that didn't help.
The Amazon Video app on PS4 has Audio Settings (the Amazon Video app on my Ultra has no Audio Settings) on which I have selected 5.1.
The problematic programs I've found do not show a little 5.1 symbol.
My soundbar does not support Dolby D+, so I've tried all the other Audio Settings combinations of "Mode" (Auto and Stereo) and "HDMI & S/PDIF" (Auto detect, PCM-Stereo, Dolby D, Dolby D, DTS.) I actually also tried Dolby D+ but that didn't help and streams start with a brief terrible screech.)
Incidentally, when I listen to the audio from my Ultra via my Samsung LN40A550P3FXZA HDTV (which gets it via HDMI), the audio sync is identical (whether via Optical to my Soundbar, from the TV's speakers, or via the TV's headphone output); which surprised me actually, I'm used to my old HDTV not outputting any audio (which I only send it via HDMI) unless it gets PCM, but other than this sync issue the HDTV outputs audio fine no matter what I set the Ulta to output. So I guess my initial concern about only one "HDMI & S/PDIF" setting might have been unnecessary.
So it's not just me either when it comes to Amazon Prime Video either. I've also seen/heard this occur on curated channel, Shockwerks TV. I've disconnected cables, powered down equipment, reset/restart Premiere + set top. Contacted the owner of Shockwerks and he was never aware of any problem. I can't point to any one thing that might have cleared the issue but it's only intermittent. Just curious, when you select Amazon Prime from Home screen, and select a title. do you ever get a "freeze frame" of video before the selection starts (with sound and picture synced) ?