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Author Topic: The Rammb Slider Thread  (Read 685 times)

b_lumenkraft

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The Rammb Slider Thread
« on: April 15, 2019, 07:04:36 AM »
As requested,

Perhaps you should start a new thread to store them.

, here i will post GIFs made with the Rammb Slider website which provides satellite images of the Arctic in 51-minute steps.

Hope you all enjoy. :)

b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #1 on: April 15, 2019, 07:09:40 AM »
This is a GIF showing the Beaufort Sea.

You can see beautifully how the wind moves the ice, causing a spiral pattern.

Edit: The gyre below is also contributing to the movement.

(Click to play)
« Last Edit: April 15, 2019, 11:35:25 AM by b_lumenkraft »

b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #2 on: April 15, 2019, 07:17:51 AM »
This is a GIF showing a perfect storm over Nares Strait on 11. and 12. 04.

oren

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Re: The Rammb Slider Thread
« Reply #3 on: April 15, 2019, 08:48:53 AM »
Amazing stuff, thank you B_L. Although the name of the thread may not be clear to some.

b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #4 on: April 15, 2019, 09:16:47 AM »
Thanks a lot Oren :)

I thought it's a good nerdy name for nerdy sea ice topic. I'm not married to it though.

Neven, feel free to rename (if possible).

uniquorn

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Re: The Rammb Slider Thread
« Reply #5 on: April 15, 2019, 11:29:23 AM »
This is a GIF showing the Beaufort Sea.
You can see beautifully how the wind moves the ice, causing a spiral pattern.
Thanks for the new thread b_l. As you probably know, the gyre below is also contributing to the movement.

b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #6 on: April 15, 2019, 11:36:52 AM »
This is a GIF showing the Beaufort Sea.
You can see beautifully how the wind moves the ice, causing a spiral pattern.
Thanks for the new thread b_l. As you probably know, the gyre below is also contributing to the movement.

You are welcome Uniquorn.

Thanks for the correction. I've edited the post accordingly. :)

b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #7 on: April 15, 2019, 11:58:14 AM »
This is a GIF showing the Nares Strait downstream of Franklin Island.

There is evaporation going on directly after Franklin. I suspect swirls are causing upwelling here, showing the heat content carried by Nares deep waters.

Timeframe covered: 14.04. 11:16 to 20:35 UTC

be cause

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Re: The Rammb Slider Thread
« Reply #8 on: April 15, 2019, 12:52:23 PM »
b-lumencraft .. thanks for allowing the gifs to be played seperately ..I cannot load some pages here because all the gifs are trying to load and play themselves at the same time and my connection is not that good . I only wish all posters could adopt similar tactics .. for folks like me .. and for the environment .. b.c.
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b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #9 on: April 15, 2019, 02:16:57 PM »
b-lumencraft .. thanks for allowing the gifs to be played seperately ..I cannot load some pages here because all the gifs are trying to load and play themselves at the same time and my connection is not that good . I only wish all posters could adopt similar tactics .. for folks like me .. and for the environment .. b.c.

Thank you B.C.,

but actually, i think it's the forum software doing this when GIF size is very big. I did nothing special.

Neven, can you shed light on this? Is there an 'play inline' option?

Neven

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Re: The Rammb Slider Thread
« Reply #10 on: April 15, 2019, 02:53:01 PM »
Yes, from a certain size onwards (700x700px or some such, I'm not sure) gifs only play by clicking on them.
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Re: The Rammb Slider Thread
« Reply #11 on: April 15, 2019, 03:03:36 PM »
Click is required above 700 pixels. Or make an MP4 instead of a gif.
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b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #12 on: April 15, 2019, 03:05:27 PM »
Yes, from a certain size onwards (700x700px or some such, I'm not sure) gifs only play by clicking on them.

Thank you for your answer Neven. :)

So B.C., what do we do with this info? Upload big ones on purpose so they don't autoplay?

b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #13 on: April 15, 2019, 03:10:21 PM »
Click is required above 700 pixels. Or make an MP4 instead of a gif.

Thanks Sleepy,

MP4s don't play in the browser for me. I need to download them and play them with separate software. Very inconvenient IMHO.

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Re: The Rammb Slider Thread
« Reply #14 on: April 15, 2019, 03:15:02 PM »
Some MP4's do not play well, I made this one with handbrake recently, does it play for you?
https://forum.arctic-sea-ice.net/index.php/topic,1102.msg195011.html#msg195011
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Re: The Rammb Slider Thread
« Reply #15 on: April 15, 2019, 03:39:58 PM »
Sorry to report: No. :-[

Sleepy

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Re: The Rammb Slider Thread
« Reply #16 on: April 15, 2019, 03:59:24 PM »
Ok, just trying to figure out if it was playing for you, the settings I use in handbrake should work in most browsers, I primarily use Firefox myself.
But since MP4 is just a container it's possible to make it unplayable for everyone. ;)
http://camendesign.com/code/video_for_everybody/test.html

The easy fix is to make your gifs 701 pixels or more.
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uniquorn

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Re: The Rammb Slider Thread
« Reply #17 on: April 15, 2019, 08:08:31 PM »
I sympathise with be cause's problem not least because I am on satellite broadband and am always managing bandwidth at the end of the month. It should be noted that 700 pixel gifs (or less) often produce the best quality images when viewed directly in the browser.
I think posting larger animations on the less viewed threads is a good compromise, though I thought that neven preferred an upper limit of ~10MB. If be cause really wants to view those threads then there is always the option suggested a long time ago here.
https://forum.arctic-sea-ice.net/index.php/topic,1259.msg165467.html#msg165467

Neven

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Re: The Rammb Slider Thread
« Reply #18 on: April 15, 2019, 10:02:15 PM »
Larger files cost more energy. I'm neurotic when it comes to that kind of stuff. In the greater scheme of things, it doesn't matter all that much. But it does matter to some of those people who don't have limitless bandwidth at their disposal, so I try to keep files as small as possible.
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Re: The Rammb Slider Thread
« Reply #19 on: April 15, 2019, 10:38:27 PM »
Larger files cost more energy. I'm neurotic when it comes to that kind of stuff. In the greater scheme of things, it doesn't matter all that much. But it does matter to some of those people who don't have limitless bandwidth at their disposal, so I try to keep files as small as possible.
understood

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Re: The Rammb Slider Thread
« Reply #20 on: April 16, 2019, 07:33:39 AM »
Larger files cost more energy. I'm neurotic when it comes to that kind of stuff. In the greater scheme of things, it doesn't matter all that much. But it does matter to some of those people who don't have limitless bandwidth at their disposal, so I try to keep files as small as possible.
understood

I don't understand.

Let's imagine 2 threads. The first thread has only small GIFs. A person opening this thread would download all the GIFs just by opening the thread.
Another thread with only big GIFs would not download any GIF, but only the ones they are clicked on.

So the thread with bigger GIFs would need more memory on the server but would cause less traffic because threads are opened way more often than GIFs clicked on.

As unintuitive as it sounds, bigger GIFs would cause less traffic given the behaviour of the forum software.

Sleepy

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Re: The Rammb Slider Thread
« Reply #21 on: April 16, 2019, 10:27:19 AM »
People are talking different sizes here, pixel size and file size. Then add animation and canvas size.

If you want a thread primarily using animated images and at the same time optimize loading time for users with low bandwidth you should use a 701 pixel canvas. A 700 pixel image (or lower) with a 701 pixel canvas is exactly as good as an image with an 700 pixel canvas as long as the image itself is the same (original) size, pixelwise...

Your filesizes are also a bit large b_lumenkraft, as an example, NSDust03 above is +14MB, as a comparison I'll attach a modified animation using ScreenToGif and Photoshop with a 701 pixel wide canvas, it's now down to 3,7MB and it doesn't autoplay.

In short; b.c. is happy because loading time and power consumption are improved at his end.
Nevens servers likewise.
You've got more work and increased your own power consumption.
Like I did right now. But I save a lot more by not using a car. ;)

Edit; forgot to add the former standard phrase in here, click to animate.
« Last Edit: April 16, 2019, 10:55:05 AM by Sleepy »
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b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #22 on: April 16, 2019, 11:09:12 AM »
I understand now. Thank you Sleepy, that was very helpful.

b_lumenkraft

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Re: The Rammb Slider Thread
« Reply #23 on: April 16, 2019, 06:19:08 PM »
In the GIF below i provide visual context to this post from the Nares Strait thread:

Looking at pairs of DMI-Greenland Sentinel images that are "1 day" apart (but who knows the exact number hours between any two images?) - March 14 and March 15 - I see large floes coming into the north end of Nares Strait (that I'm 'sure' will break along the way, and not create an ice jam) having moved 30 km, floes moved 65 km in Hall Basin, 35 km in Kane Basin, and 55 km in Smith Sound.  (Named locations can be found in the very first link offered in the [Greenland and Arctic Circle folder] Google Maps with place names thread Reply #1 or more directly here.)  Averaging these rates, ice is currently taking about 10 days to traverse the 500 km length of Nares Strait.

14.04. 01:50 to 15.4. 10:38 (UTC)

Click to play
« Last Edit: April 16, 2019, 06:25:46 PM by b_lumenkraft »