Hi,
How do I set something simliar like this on windows
[HKEY_CURRENT_USER\SOFTWARE\Plex, Inc.\Plex Media Server]
“GenerateBIFKeyframesOnly”=dword:00000000
on my Synology NAS?
Thanks,
Cabel
To be clear, you want to turn this off? BIF generation is much faster with it on. With it off, it will take several times longer.
Thank you very much!
@trumpy81
should it look something like this?
@anon18523487
Yes, I have to turn it off because some movies didin´t generate video preview thumbnails.
Same as here:
I have been discussing this on another thread, but now have concrete examples of straight-from-Blu-ray rips for which Plex fails to produce video thumbnail previews.
Discs from the Arrow label especially seem to cause this error: The Thing (1982 film/2017 release), The Exorcist III (2019 release) and Dream Demon (2020 release), Another is Little Joe (2019).
In all cases, the preview generator fails with an error along the lines of: “BaseIndexFrameFileManager: expected 4174 images, but found 0”…
There is a very old bug in Plex which me and a few others reported about a year ago, regarding the generation of video preview thumbnails. This happens with certain titles that have an unusual encoding format.
It’s very easy to reproduce.
Take any Blu-ray or 4K disc published by the Arrow label. This is not confined to Arrow, but I know for a fact they all use the same GOP encoding.
Rip the title to MKV using any method you prefer.
Add it to a Plex library with video preview thumbnail generat…
Oh my gosh …
There’s a much better way than the binary hacking above. I found a hidden setting:
In Preferences.xml, add: GenerateBIFKeyframesOnly="0"
By default this setting doesn’t exist, the default value is 1, and Plex uses -skip_frame:v nokey. This is fast but has occasional problems on certain files if FFmpeg doesn’t detect enough keyframes.
Adding this and changing it to 0 causes Plex to not use that argument and not skip frames. This is much slowe…
Volts
October 1, 2021, 7:55pm
7
Oh nice! GenerateBIFKeyframesOnly has been added to the Support doc. It wasn’t listed previously. I was always worried that it was unsupported.
There’s also this method for changing settings:
Big Media folder? Make smaller video preview thumbnails! - #6 by Volts
system
Closed
December 30, 2021, 7:56pm
8
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