Custom thumbnails for videos not displaying

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kbyork
Posts: 23
Joined: Sun Mar 30, 2014 7:19 pm

Custom thumbnails for videos not displaying

Post by kbyork »

Regarding an old post:
Custom thumbnails for videos not displaying viewtopic.php?f=82&t=42975
Post by MontanaFur » Wed Jan 26, 2022 8:20 pm

I also had found this problem! ...and since it still exists in the current version, I am chiming in on this bug report; in hopes that it gets attention.

I could send you an example video if you like;... or you could just make your own:

Code: Select all

fmpeg.exe -hide_banner -i INPUTvid.mp4 -i thumbnail.jpg -map 0 -map 1 -c copy -disposition:v:1 attached_pic OUTPUTvid.mp4
Any video with an embedded thumbnail seems to fail to show the embedded version.
As stated in the original post; Windows Explorer correctly displays the embedded thumbs.


P.S.: when using the INFO pane > Properties tab: I see sections for: FILE, IMAGE, VIDEO, AUDIO
I had always thought that the IMAGE section was the embedded thumbnail.
Since it is not; what is it for? (if anything)


thanks,
Kevin
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xnview
Author of XnView
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Re: Custom thumbnails for videos not displaying

Post by xnview »

yes please send me a sample file?
Pierre.
kbyork
Posts: 23
Joined: Sun Mar 30, 2014 7:19 pm

Re: Custom thumbnails for videos not displaying

Post by kbyork »

I forgot about needing to send you the video. My apologies...
Despite quite a bit of looking; I was not able to find the video that I was originally going to send you.
So I made a tiny one using ffmpeg.exe

hmm... how do I send it? A 7MB attachment causes a 'file too large' error.
kbyork
Posts: 23
Joined: Sun Mar 30, 2014 7:19 pm

Re: Custom thumbnails for videos not displaying

Post by kbyork »

Videos thumbnails can come from the embedded image or are auto-generated from the video itself.
I am guessing that XnView-MP is correctly detecting the embedded thumbnail image; but is preferring the auto-generated one.

Because (looking at INFO pane > PROPERTIES) you are detecting the thumbnail with correct resolution,etc.

POST SCRIPT: (looking at INFO pane > PROPERTIES) if the view does NOT have a thumbnail:
  • the properties of 'FILE', VIDEO' and 'AUDIO' are correctly updated.
  • But not the 'IMAGE' property. It keeps whatever was there the previous file that was examined.
kbyork
Posts: 23
Joined: Sun Mar 30, 2014 7:19 pm

Re: Custom thumbnails for videos not displaying

Post by kbyork »

(bump)