IMDB Movie Video does not synch with Movie Sound while viewing?

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Whenever we attempt to watch *any* IMDB TV video on Amazon FireTV through our Spectrum 5gHz 100mbs wireless Internet connection, the IMDB video image displays properly but the video sound delays a few tenths of a second.

Consequently, every IMDB movie we attempt to view is disrupted by the sound track that does not synchronize with the movie display.  We cannot watch IMDB TV because of this video display/sound synch problem.

All other Amazon FireTV channels (i.e. Pluto, Tubi, BigStar, Sony Crackle, etc.) seem to show videos OK with no video display/sound problems such as IMDB TV. As far as I am aware, we have installed all of the latest hardware/software firmware and updates currently available through Amazon FireTV.

Spectrum's Tech Support claims the display video/synch problem is probably caused by the broadcast signal sent by the IMDB TV movie link and not by Spectrum.  They claim it is an IMDB problem and not Spectrums responsibility.

How can I better diagnose and define the cause of this IMDB video/sound problem and where could I find more info to resolve these display/video synch concerns?

Are there any IMDB software utility tools available to my standard IMDB Account that would allow me to better synchronize this time delay between the IMDB TV video and sound?

Are there any specific and constant Internet Port Addresses used by the IMDB TV Channel that should be given priority through our 5gHz wireless Router?

Would an IMDB Pro subscription enable a better level of video/sound quality from IMDB TV?
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Steve Neago

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Posted 2 months ago

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Steve Neago

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I believe I found the answer to our IMDB TV Audio/Video Synch problem !

It is strange that we only experienced this problem with the IMDB TV channel and not other Amazon FireTV channels...

Our original Amazon FireTV setup defaulted to Settings -> Display & Sounds -> Audio -> Dolby Digital Output -> Dolby Digital Plus Automatic that had been set to ON. 

This FireTV "Dolby Digital Plus Automatic" setting used with our Toshiba LCD TV apparently causes a time delay to occur between FireTV Video and Audio.

I selected another choice named "Dolby Digital Plus OFF" to turn off Dolby Digital sound and now the sound works great with IMDB TV and our Standard IMDB TV Account...

Have other people also experienced this Amazon FireTV - IMDB TV video/audio synch problem and how were you able to resolve this problem?


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Steve, Official Rep

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Hi Steve,



If you're experiencing playback issues with IMDb TV, please first review the Prime Video System Requirements for Computers.

If you've confirmed that your device, web browser, and internet connection meet the minimum requirements and are still experiencing playback issues, please contact Prime Video support for further assistance.
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Steve Neago

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The "Prime Video System Requirements for Computers." requirements mentioned above are misleading... This weblink says that Web Browsers must support "Sound quality - Stereo" which my Mozilla FireFox version does fully support.

The problem is the Amazon FireTV Stick V2 that I own initially installs Dolby Digital Plus Automatic as a default setting.  However, IMDB TV apparently requires this setting to be "Dolby Digital Plus OFF". 

IMDC TV usage documentation needs to changed because it does not advise the User while installing nor through online documentation this setting needs to be changed from Dolby Digital Plus Automatic to Dolby Digital Plus OFF.

It seems to me that IMDC TV needs to add this hardware check in online user documentation and/or modify the IMDC TV APP install program to check for and modify that setting. 

This default FireTV Stick settings concern seems to be a IMDC TV testing/documentation problem that I have discovered and needs to be addressed by IMDC documentation staff if they want to reduce customer install problems and concerns...