Custom thumbnails for videos not displaying

[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

[xnview]

yes please send me a sample file?

[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]

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]

(bump)

[Alexandra0056]

Here is a sample video with implemented custom thumbnail uploaded on external host 4shared:

https://www.4shared.com/video/WVQuDcOdk ... ction.html

That video uses this exact image as custom (embedded) thumbnail:

https://imgur.com/a/7ZtoxbM

See also: https://newsgroup.xnview.com/viewtopic.php?t=49425

P.s. Maybe this tool [https://exiftool.org/gui/] would help to determine which EXIF data belongs to custom thumbnail.

[Alexandra0056]

I can admit that it is really annoying. And for example Windows Live Photo Gallery 2012 (app old 13 years) is showing custom thumbnails correctly.

Honestly, XnView MP is one of best pieces of software in world, and I can't believe that such basic things are not resolved.

But since this issue is open for 3 years it suggests that main developer have different priorities and I respect that.