Contents:

1. For people who would like to compare pictures within their browser
2. "Time travel" tips, or how to start a video at a specific time in Youtube, Vimeo and Dailymotion
3. How to crop the black borders in a screenshot

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For people who would like to compare pictures within their browser

• Tile Tabs add-on for Firefox users;
• Tab-resize extension for Chrome.

Opera apparently has it as inner functionality. I didn't find anything about it for Safari nor for Internet Explorer.

In Firefox:

(Click...)

"Time travel" tips, or how to start a video at a specific time in Youtube, Vimeo and Dailymotion

• Youtube:
At the end of the link, just add &t=[min.]m[sec.]s. Example, &t=14m57s:
https://www.youtube.com/watch?v=MtLmgQGizYg&t=14m57s
(Video: Chrysler Turbine / Channel History - Car Documentary)

Same idea when hours are needed:
https://www.youtube.com/watch?v=BqkL2dFWZ_I&t=1h06m27s
(Video: WRC / Channel History - Car Documentary)

It works of course with multiples of lower units:
https://www.youtube.com/watch?v=BqkL2dFWZ_I&t=66m27s
https://www.youtube.com/watch?v=BqkL2dFWZ_I&t=3987s
will both show the documentary starting at 1h 06m 27s...

(& can be replaced by #, and if only seconds are used, the "s" is not mandatory: #t=3987)

• Vimeo:
Same as for Youtube, the minutes and seconds are needed. But this time its a # that is used to indicate them. Example, #t=4m30s:
https://vimeo.com/57909173#t=4m30s (or #t=270s)
(Video: One Car to Do It All / Petrolicious)

As for Youtube, h can be used when needed:
https://vimeo.com/109759624#t=1h17m04s
(Video: Who Killed the Electric Car / Entrepreneurship)

• Dailymotion:
The "magic keyword" is &start=, followed by the number of seconds since the beginning of the movie. No h, m or s, a calculation is required. To start the video at 2m 25s, &start=145:
http://www.dailymotion.com/video/xbexqe_aeroport-vehicle-racing-crash-test_auto&start=145
(Video: Aeroport vehicle racing crash test truck destruction derby / Top Gear)
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Thanks to Sandie, who showed that this option was available for Youtube videos.

Couldn't find another thread to post this, but I have found out that BrentMosher420 is actually tom11 in disguise...their profile descriptions match, and both are from South Carolina...

You could then create a new thread instead of posting that as off-topic
And if he behalves like he did as tom11, he'll be banned again. If he behalves normally, it is fine.

How to crop the black borders in a screenshot

• with XnView, a free software (tutorial made by vilero):
http://imcdb.opencommunity.be/forum_topic-6311-47099-Cropping.html#p47099

XnView works apparently only with the Windows OS. GNU/Linux and Mac OS (and Windows) users can use XnViewMP, said to be "the enhanced version to XnView".

• with GIMP, a free and open-source software:
http://www.gimp.org/tutorials/GIMP_Quickies/#crop

Batch cropping is also possible using the DBP plugin (there is also the BIMP plugin. But it doesn't work on my computer, so I can't say if it is effective...).

GIMP was first intended to GNU/Linux OS to offer a free and open-source "PhotoShop contender", but Mac and Windows versions are also available (click on the Show other downloads link in the downloads page to see them).

• with ImageMagick, a free and open-source command-line software:
For fast scripts in a command-line window. ImageMagick runs on Linux, Windows, Mac Os X, iOS, Android OS, and some others.

For 720x306 pictures with 2px bars left and right and 3px ones top and bottom:
  ∗ single picture
convert -crop 716x300+2+3 OldPicture.jpg NewPicture.jpg
  ∗ batch conversion:
mogrify -crop 716x300+2+3 *.jpg

Just note that mogrify replaces the original pictures with the modified ones, makes no backup and keep in mind that Ctrl+Z don't work in command-line. This tool requires some self-confidence (or systematic use of backups)


(© Pierre Beteille)

Or use the old version:
http://www.xnview.com/en/xnview/#archive
and only the Windows version seems still maintained, since the author now works on XnViewMP I guess.