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

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3
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1answer
1k 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
48 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 ...
3
votes
1answer
42 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
142 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
236 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
16 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 ...
11
votes
0answers
183 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 ...
1
vote
1answer
92 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 ...
13
votes
2answers
10k 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 ...
2
votes
0answers
55 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
51 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 ...
0
votes
0answers
22 views

Video is auto rotated in Nautilus (Gnome) as a thumbnail and playback

I have searched everywhere for settings/plugins/program etc. to change this behaviour. If a video is filmed in portrait (or believes it is) it is rotated to this perspective both as a thumbnail and ...
4
votes
4answers
5k 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
2answers
2k 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
151 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 ...
1
vote
2answers
2k 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 ...
9
votes
2answers
245 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 ...
5
votes
1answer
206 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 ...
1
vote
0answers
164 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 ...
27
votes
4answers
6k 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
101 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 ...
6
votes
2answers
3k 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
67 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
904 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
136 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
45 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
vote
0answers
37 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
vote
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
82 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 ...
11
votes
2answers
5k views

How to stop Nautilus from creating thumbnails of specific file types?

I'm trying to stop Nautilus from creating thumbnails of PDF files. In another thread on 'Ubuntu forums' someone said to open gconf-editor and disable the PDF entry in the '/desktop/gnome/thumbnailers' ...
0
votes
0answers
34 views

Incorrect orientation of thumbnails in Nautilus (“Files”) using 14.04 [duplicate]

In Files 3.10.1 (formerly Nautilus) I display thumbnails when viewing a folder of images. If the orientation of some images is wrong (i.e. landscape format displaying as portrait, or vice versa) I ...
0
votes
1answer
55 views

Nautilus keeps re-creating thumbnails

I'm have a thumbnail problem on my Ubuntu 12.04 machine where my thumbnails won't stay deleted. I've gone through the following steps in an unsuccessful effort to permanently delete old thumbnails: ...
4
votes
2answers
4k views

Show me only picture thumbnails

Is it possible in nautilus that it shows thumbnails only for pictures and for all others like videos, pdfs, etc thumbnails are disabled?
0
votes
1answer
65 views

Is There A Way To Disable thumbnails on Ubuntu 12.04?

Is there a way to disable thumbnails from being made (captured) on Ubuntu 12.04? I'm referring in: ~/home/xxxx/.thumbnails Thanks in advance.
1
vote
2answers
54 views

Permissions for thumbnailer on device

I'm developing an application for U-Touch that gets a thumbnail from a video in C++ code using libthumbnailer system library. The app does the thumbnailing perfectly in my computer, but when i try to ...
1
vote
1answer
192 views

Can I safely remove tumbler in Xubuntu 14.04?

I have a similar problem to the one under this question: What is tumblerd? That program is one of the most CPU hungry I ever seen in Xubuntu/Xfce. I do not really need thumbnails preview and I might ...
4
votes
2answers
717 views

What rendering engine does Nautilus use to show HTML previews/thumbnails?

I just noticed that HTML files with CSS transforms on elements show with the CSS transforms within the thumbnails on Nautilus. So what rendering engine does Nautilus use to generate the thumbnails for ...
1
vote
0answers
239 views

How to manually generate video thumbnails?

I'm using Ubuntu 14.04 and I want to ask how to generate video thumbnaiils manually? In some videos, the generated thumbnail is the logo of the company (in the very beggining of the video), and not ...
5
votes
1answer
1k views

How to disable thumbnail generation?

For privacy and security reasons I want to disable the generation of any thumbnails in the ~/.cache/thumbnails folder (using Ubuntu 14.04 LTS). I already tried this (without success): In the ...
12
votes
2answers
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 ...
0
votes
0answers
21 views

How often is the thumbnail cache cleared? [duplicate]

I'm not sure which application is the culprit (Nautilus, with the help of another library, I would assume), but if you take a look at ~/.cache/thumbnails you will notice that Ubuntu stores the ...
7
votes
2answers
2k views

What additional thumbnailers are available and how do I install them?

Question: Ubuntu's file manager, Nautilus, comes with a wide support for file previews. These thumbnails are handled by helper programs called thumbnailers. The number of thumbnailers that come ...
23
votes
3answers
9k views

What is safe to exclude for a full system backup?

I'm looking for a list which paths/files are safe to exclude for a full system/home backup. Considering that I have a list of installed packages. /home/*/.thumbnails /home/*/.cache ...
3
votes
2answers
103 views

An independently browseable database of large thumbnails?

I've googled about this for a while but to no avail. I have a huge amount of photos stored in several media and backed up in a cloud. Shotwell generates pretty large thumbnails which are quite good ...
1
vote
0answers
265 views

Disable text file previews/thumbnails in nautilus

Nautilus in 14.04 generates "thumbnails" of all text files in that it shows them all as the same, blank text icon. If I turn off thumbnails altogether, then it displays correct icons, but I need ...
0
votes
1answer
144 views

link between photo and thumb in shotwell (v 12, db schema 15, ubuntu 12.04)

How do I find the corresponding thumb to a photo in shotwell, schema version 15? The thumb files seem to have hex numbering that doesn't seem to correspond to anything in the photo table as far as I ...
5
votes
1answer
433 views

Is it possible to preview arbitrary formats in Nautilus?

I recently found out that Nautilus (Ubuntu 12.04 at least) can show thumbnails of files of non-image formats, for example (data grapher) grace files (.agr) shows a small version of the graph contained ...
2
votes
0answers
16 views

How to disable thumbnail preview for text file [duplicate]

I am using Ubuntu 14.04 but I miss one great feature of enabling and disabling preview for text file, so is their any way to do so?
1
vote
1answer
1k views

How do I enable thumbnails for 'webm' files?

I have thumbnails for every other file type just not .webm. Is there any way to enable them and if so, how would I do that?