RAR extraction size change

Moonee · Post by **Moonee** » Tue Jan 27, 2026 11:15 pm 0 likes

Night457 wrote: Mon Mar 03, 2025 12:42 pm At 7.57GB it is large enough that a VPN Server change may be required in the middle of the download to maintain full download speed.

I think you were meant to add a 6, not 7

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Post by **Night457** » Wed Jan 28, 2026 12:42 am 0 likes

It looks like I used the size of the full ISO as claimed by the single pixeldrain link. Maybe WinRar actually succeeded in compressing it somewhat when I archived it?

Moonee · Post by **Moonee** » Wed Jan 28, 2026 1:24 am 0 likes

Huh, I'm super confused as to why pixeldrain is higher in size than the mega file

I added both the pixeldrain file and the mega files to my jdownloader2 linkgrabber tab and this is the size for both

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Post by **Night457** » Wed Jan 28, 2026 1:28 am 0 likes

The Mega links are a bunch of RARs forming an archive. In theory RAR is supposed to compress the size. It was not much.

Moonee · Post by **Moonee** » Wed Jan 28, 2026 1:40 am 0 likes

Oh, I didn't know that

But once I extract the rars, the size will be exactly the same size as the pixeldrain file right?

Post by **Night457** » Wed Jan 28, 2026 2:05 am 0 likes

Yes, unless I f*d up. I do not test extracting the RARs I create, I just assume WinRar did it right.

Moonee · Post by **Moonee** » Wed Jan 28, 2026 7:52 am 0 likes

Night457 wrote: Wed Jan 28, 2026 2:05 am Yes, unless I f*d up. I do not test extracting the RARs I create, I just assume WinRar did it right.

Nah, I don't think you messed up

The file went from 6 and a half gb to 7gb after I extracted the file

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Weird, I've never seen a file increase in size after I extract.. I've only seen decreases

DreamScape · Post by **DreamScape** » Wed Jan 28, 2026 8:56 am 1 likes

Moonee wrote: Wed Jan 28, 2026 7:52 am Weird, I've never seen a file increase in size after I extract.. I've only seen decreases

Hmm, I thought there was already a discussion about this. DVD specifications are over 30 years old at this point, the video encoding is not as compressed as modern codecs so archiving them can actually reduce the file size sometimes.

Post by **Night457** » Wed Jan 28, 2026 3:38 pm 0 likes

new thread for discussion

Post by **Night457** » Wed Jan 28, 2026 3:53 pm 1 likes

DreamScape wrote: Wed Jan 28, 2026 8:56 am
Moonee wrote: Wed Jan 28, 2026 7:52 am Weird, I've never seen a file increase in size after I extract.. I've only seen decreases
Hmm, I thought there was already a discussion about this. DVD specifications are over 30 years old at this point, the video encoding is not as compressed as modern codecs so archiving them can actually reduce the file size sometimes.

I could at least find a mention:

DreamScape wrote: Tue Jan 06, 2026 4:33 pm
Moonee wrote: Tue Jan 06, 2026 3:56 pm To be honest, I don't understand a single meaning of h265, h264 etc.
Videos are not a slide show of images because the file size would be too large. It's also wasteful because two adjacent frames in a video are typically very similar. So an algorithm is used by your computer to calculate the next image in the sequence instead of directly storing the entire image. h264 is older and has wider compatibility. h265 is newer, more efficient (so smaller file size), but also requires more CPU power to crunch the numbers to calculate the next image, which can cause the video to stutter on older computers.

BTW, this is why archiving a video in a win rar or 7zip file doesn't shrink the file very much at all. Modern video files are already highly compressed so archival compression doesn't add much.