Thumbnails are reduced-size versions of pictures/videos/PDF's, Used to help in recognizing and organizing them.

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1answer
11 views

Can't generate thumbnails from some mkv files

I've been using Ubuntu for a time but still not that professional one. My problem -that I've been stuck with last two days- is I downloaded an MKV video with HEVC stream which is unknown to VLC, but ...
1
vote
1answer
61 views

dolphine “show previews for” blank

I Fresh installed ubuntu 16.04 and installed dolphin (15.12.3) + FFMpegThumbs so that I can see thumbnails of videos but when I went to the previews the box was just blank
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0answers
17 views

Lubuntu - How to disable thumbnails for videos and PDFs

How can I disable thumbnails for video files and PDFs in Lubuntu 16.04?
1
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1answer
439 views

How to install dolphin on Ubuntu 15.10 wily with Unity

I am using dolphin as my preferred file manager under unity. After upgrading to Ubuntu 15.10, dolphin shows a couple of problems: some program icons are missing. For example icons in the icon bar ...
1
vote
1answer
149 views

Caja only shows images and icons preview when root

I'm looking for the solution to this error for some time . I did not find anywhere. Caja could only see the icons of the images and videos when at root. How can I enable this functionality in normal ...
3
votes
2answers
7k views

Nautilus thumbnails don't appear in 14.04

This is a fresh install of Ubuntu 14.04. In Nautilus > Edit > Preferences > Preview I have "Show thumbnails" as "Local files only" and "Only for files smaller than" 100MB. Changing those settings ...
2
votes
1answer
66 views

How to enable thumbnail preview for text files in Nautilus

I have many small text files, and want Nautilus to show previews in the icon thumbnail. Left is my current situation, right is what I want. How to achieve that on Ubuntu 15.10? My current ...
0
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3answers
2k views

dolphin thumbnail didn't show

I've changed my unity default file manager to dolphin like this sudo mv /usr/bin/nautilus /usr/bin/nautilus.asli && sudo ln -s /usr/bin/dolphin /usr/bin/nautilus but, video thumbnails ...
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0answers
31 views

mkv picture attachment and thumbnails

Question How do I get nautilus to use the attached picture to my MKV file when available? I have ffmpeg and ffmpegthumbnailer installed so I get thumbnails for my videos but those aren't as fancy as ...
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0answers
78 views

how to have thumbnail for image/video in dash and nautilus?

I'm running ubuntu 15.10. For some videos on my external drive, I have thumbnails in Nautilus. I have try to empty cache and change settings in nautilus Edit/preference/preview, but I still don't ...
0
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0answers
75 views

Nautilus thumbnails gone after uninstalling Totem (Ubuntu 14.04)

I've installed VLC and uninstalled Totem. Now Nautilus doesn't show any thumbnail for videos. How can I get them back? (My problem is exactly the same as in nautilus-video-thumbnails-without-totem, ...
0
votes
1answer
46 views

Retrieve thumbnail for a given file

Is there a command to get the (possibly cached) thumbnail for a given file? As in, the same way the file manager does it? Answers can be for gnome, lxde, kde, it doesn't matter. Props for a command ...
2
votes
1answer
789 views

Creating thumbnails with the same name as the pictures

Please, here is my little code for creating thumbnails of pictures saved in a folder named 'pictures', and saving them in another folder named 'thumbs'. #!/bin/bash for i in *.jpg do convert ...
5
votes
1answer
803 views

Nautilus not generating thumbnails for GIF images in Ubuntu 15.04

No matter what I try (changing the preview options, deleting the thumbnail cache, etc.), Nautilus in Ubuntu 15.04 does not generate thumbnails for GIF image files. However, it generates a thumbnail ...
4
votes
2answers
2k views

Missing movie thumbnail in Dolphin Kubuntu 15.10

Since the new 15.10 release, the movie thumbnail is gone from dolphin. It was working before, I did an upgrade from 15.04 and suddely this option disappeard. Any idea how can I get it back ? Thank ...
0
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0answers
94 views

Ubuntu 15.10 does not provide thumbnails for tex files

I recently upgraded from Ubuntu 14.04 LTS to 15.10 and among several little drawbacks, I noticed that there are no thumbnails of tex files (and other text files by the way) either on Nautilus or Nemo. ...
0
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0answers
20 views

Creating a Nautilus thumbnailer script for YUV422 images

My question is very similar to this. I have an image in png format: I can convert the image back and forth to YUV422 like this: avconv -i car.png -s 657x424 -pix_fmt yuv422p car.yuv avconv ...
8
votes
3answers
978 views

How to regenerate a specific thumbnail in Nautilus?

Sometimes I crop PDFs in order to have a one-page reading instead of a scanned two pages. However, nautilus keeps an old thumbnail showing the former front page. I know that I can delete the hidden ...
1
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0answers
91 views

How can I see the thumbnails for webms?

I'm using Lubuntu and I can't see the thumbnails for webms and some images. How do I fix that?
3
votes
1answer
230 views

How to make Nautilus display .psd thumnails?

is it possible to make Nautilus display Photoshop .psd files thumbnails when viewing files in the list? If yes, what are exact steps to make it happen. Had been searching this in google, no luck so ...
3
votes
0answers
73 views

Thumbnail creation in Nautilus fails

I've tried to create a thumbnailer for Nautilus for PSD files with this configuration in /usr/share/thumbnailers/psd.thumbnailer And the following content: [Thumbnailer Entry] TryExec=convert ...
12
votes
3answers
2k views

How large can Nautilus's thumbnail cache grow?

Nautilus's thumbnail cache in ~/.thumbnails has grown to several hundred megabytes. Do I need to be concerned about unrestricted growth of this in the long term, or is its size automatically managed ...
7
votes
1answer
496 views

Different nautilus thumbnails rendering for text files

I have Ubuntu 14.04 Gnome edition on both my laptop and the desktop; both are up-to-date but they have a different past-history of installations and upgrades. Now, text-type thumbnails are different ...
15
votes
2answers
13k views

Way to make video-thumbnails generate from VLC instead of Totem?

I'm suffering from problem that video-thumbnails do not appear in nautilus for some video files. I just found this bug typefinding: some mpeg files are not identified as mpeg files which seems to ...
13
votes
2answers
492 views

Disable thumbnail creation for specific folders only, but all users

How do I prevent my Ubuntu 14.10 (now 15.04) from creating and saving thumbnails for a specific folder only? I want to tell the thumbnailer to skip over that single folder (and subfolders), but for ...
0
votes
0answers
144 views

Certain .mkv files won't generate thumbnails.

In Xubuntu, randomly, thumbnails for certain mkv files refuse to generate. Trying to delete one showed it was unable as it was being used by the thumbnailing service. Also, no thumbnails are generated ...
3
votes
1answer
2k views

Ffmpeg output screenshot gallery

Does any one knows if ffmpeg can create video thumbnails something like I know totem can do this but totem does not support the video format that I am using THank you in advanced You can see this ...
2
votes
2answers
156 views

Disable Text File Preview in Nautilus in Ubuntu 14.04

In Ubuntu 14.04 I find that text files are displayed with a preview in the icons. I do not want to disable preview for all file types because I need thumbnails for images, media and various other ...
4
votes
1answer
344 views

Nemo / Nautilus folder icon size

Does anybody know how to reduce this white space - distance on nemo or nautilus between the folders? It's getting ridiculous! I've enlarged the thumbnails from dconf-editor and I also use compact ...
2
votes
1answer
1k views

Clearing thumbnail cache from terminal on Ubuntu 14.04

I am looking to free some space by clearing out the thumbnail cache from terminal. Inside the ~/.cache/thumbnails folder, I see 3 folders: fail large normal Is it safe to clear out all three ...
1
vote
2answers
285 views

How to recover lost Thumbnail and preview options?

I am using Ubuntu 12.04 LTS on Lenovo T500 with Gnome desktop. I have to upload photos daily for work and 2 weeks ago lost thumbnails and the ability to select preview. I assume an update did ...
0
votes
0answers
66 views

Shotwell, ignore thumbnails from other programs for import

I stored my pictures on a synology NAS and using the Photo station. The Photo station creates a couple of thumbnails for every picture and stores them in a subfolder named @eaDir. When importing ...
3
votes
0answers
133 views

Enable text file thumbnails in nautilus

In Ubuntu 15.04 (new installation, no upgrade) I cannot find an option to enable thumbnails for text files. In previous Ubuntu versions the first lines of a text file can be seen. Now in Ubuntu 15.04 ...
1
vote
1answer
173 views

Make nautilus to adjust icons size

In the following picture, I want nautilus to scale up mp3 icon so that it seems as same size as two other thumbnails. What I've done but seemed with no luck: Manipulating ...
5
votes
4answers
7k views

How to make videos show thumbnail in ubuntu 13.04?

I have ubuntu 13.04 and many of my videos do not show thumbnails whereas some do, they are all Mp4 formats including the ones that do show thumbnails. Is there a way to make all videos show ...
4
votes
1answer
3k views

LXDE: PCManFM Thumbnails of images > 2MB are not shown

Im using LXDE, with PCManFM but images bigger than 2MB are just shown with image-symbol and not with the thumbnail. How Can I change that behavior?
3
votes
1answer
237 views

How can I exclude specific folders from thumbnail generation?

So I have a folder I would like Nautilus to skip generating thumbnails for because there are too many files and too many changes to it. I saw that we can disable thumbnails for a specific filetype ...
9
votes
2answers
437 views

Generate thumbnails for text?

I need to generate thumbnails for some text files. Obviously the system somehow has the ability to do exactly this (see the screen shot). Is there any way I can access these images and just copy them ...
1
vote
0answers
238 views

Why did my Nautilus stop displaying thumbnails for text files?

I've chosen to have plain-text files displayed with thumbnails in Nautilus. However, this has suddenly stopped functioning the other day (after upgrading to Ubuntu 14.04 I guess). But there's no such ...
29
votes
4answers
7k views

How can I instruct Nautilus to pre-generate thumbnails?

I have a large library of PDF documents (papers, lectures, handouts) that I want to be able to quickly navigate through. For that I need thumbnails. At the same time however, I see that the ...
2
votes
2answers
394 views

How to generate thumbnails in advance (pdf mostly) [duplicate]

I have a rather large set of documents (150 GiB ~5000 files) and would like to know how to pre-generate thumbnails, preferably from the command line, so that when I navigate to the folder, I don't ...
14
votes
5answers
3k views

How do I make Shotwell regenerate all the thumbnails?

For some unknown reason all thumbnails are lost in my Shotwell, instead all icons are grey. The images themselves are all okay and I can open them all in Shotwell. There are only empty folders in ...
10
votes
2answers
6k views

Why doesn't Nemo preview thumbnails?

I have a problem with thumbnails on my Ubuntu 12.04 LTS 32-bit system with Cinnamon 2.0.14 DE and Nemo 2.08. I have tried removing the ~/.thumbnails directory but it is not working for me. This is ...
0
votes
2answers
135 views

Thumbnail Creation Cause 100%CPU

Opening folder with .jpg images or .mp4 or .mkv etc. causes 100% cpu utilization. Ubuntu 14.04, Lenovo T540P. I do not want thumbnails written constantly on my SSD. Using dconf editor I selected ...
2
votes
1answer
955 views

Some videos have no thumbnail?

I just downloaded a video series and opened the videos folder to find that some of the videos have thumbnails and some do not. How can I force the others to generate thumbnails? I have tried playing ...
0
votes
1answer
212 views

MPEG2 Transport Stream (MTS) Thumbnails

I have one of these Sony handycams that produce MTS video files. Openshot can now edit them and MPlayer2 can play them, which is fantastic. But I have trouble knowing which is which in the file ...
3
votes
2answers
61 views

Is there any way to create thumbnails in the Trash folder?

By default these do not seem to be generated. I don't know if I can force the system to do it as they would be very handy to identify a wrongly deleted picture. I'm using Ubuntu 14.04.1 LTS
1
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0answers
43 views

Custom thumnailers not working in trusty

For some reason, dconf editor is no longer able to customise thumnailers as explained here. I want to exclude pdfs and plain text thumbnails. I add ['application/pdf','text/plain'] to org > gnome ...
1
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0answers
23 views

How to change preview image for file from command line? [duplicate]

If I open the properties window for some random file. If I click on the file icon in that window I can select a new preview image (thumbnail) for the file. This preview will be displayed in the file ...
0
votes
1answer
150 views

how to stop saving thumbnails in ~/.thumbnails

file manager keeps thumbnails in ~/.thumbnails even after the original photo is deleted. it's really annoying and i feel like it's insecure if some one can watch a photo that I've deleted. i want this ...