Why do people rar videos?

This is a discussion on Why do people rar videos? within the A Brief History of Cprogramming.com forums, part of the Community Boards category; Umm well, it's really big, 77 MB. Don't have a hosting so I'll need to choose one first and upload... ...

  1. #16
    C++まいる!Cをこわせ! Elysia's Avatar
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    Umm well, it's really big, 77 MB.
    Don't have a hosting so I'll need to choose one first and upload... and that's... slow >_<
    Anyhow, why not try some heavy compression files yourself?
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  2. #17
    (?<!re)tired Mario F.'s Avatar
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    Quote Originally Posted by abachler View Post
    Supply the original file so others can verify your results?
    She doesn't need to. Those are expected results for that file type.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

  3. #18
    Malum in se abachler's Avatar
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    No offence Mario, but your word doesn't carry a lot of weight with me. Im certainly willing to go through the trouble of verifying her results, but since I posted the files I used, I expect the same courtesy in return.
    Until you can build a working general purpose reprogrammable computer out of basic components from radio shack, you are not fit to call yourself a programmer in my presence. This is cwhizard, signing off.

  4. #19
    C++まいる!Cをこわせ! Elysia's Avatar
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    Name a good upload service with ftp (ftp because uploading is slow, since my connection is limited to 60 kb/s up) and I'll upload tomorrow. Otherwise I have to scourge the web for one and then upload it.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  5. #20
    Malum in se abachler's Avatar
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    Not really sure, I have a hosting service that I use, but it doesnt allow anonymous ftp upload. Perhaps you could just find some suitable source already on the net that we could compare results from. I suggest Globat.com if you are looking to get a host. Im switchign to them when my current contract runs out.
    Until you can build a working general purpose reprogrammable computer out of basic components from radio shack, you are not fit to call yourself a programmer in my presence. This is cwhizard, signing off.

  6. #21
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    You could always use Megaupload:

    http://www.megaupload.com

    (Though it's over HTTP.)

    EDIT: FWIW, I rar:ed a couple of .avi files, the rar's were both 10-15&#37; smaller (with max compression). I could upload them for verification, if requested.
    Last edited by Oysterman; 02-11-2008 at 03:10 PM.

  7. #22
    C++まいる!Cをこわせ! Elysia's Avatar
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    I'm not looking for a host right now. I had one that gave 10 or 100 or so webspace, I can't remember, but I let it expire since I just had nothing to put on the hosting.
    So, some source of the web, huh? Speedruns maybe?
    I'll try. Let me do a test on one of the files I have.

    Quote Originally Posted by Oysterman View Post
    You could always use Megaupload:
    http://www.megaupload.com
    (Though it's over HTTP.)
    Yeah, I know of that one as well as rapidshare. Only problem is that I don't want to upload via HTTP since I can't see when it's finished and I can't pause/resume and it will take forever, so I can't close the page and I can't resume if it fails, etc. That's why I prefer FTP.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  8. #23
    pwns nooblars
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    In most cases, people have already compressed the video before it is RAR'd/7zip'd/ZIP'd so the effects of a second compression is negligable, the point of the OP was that no type of compression is much better than typical video compression. That is not to say if you take a near raw feed (such as your video camera, which can not compress as well due to the video streaming in) it wont compress, but once you run a single pass or double pass filter over it, you will get the about as small as it is going to get. (EDIT: without losing quality that is)

    Also I don't know much about RAR but 7zip, you have to get the settings right for the type/size of file you are compressing, proper setting you can get a lot better compression than just default.

  9. #24
    (?<!re)tired Mario F.'s Avatar
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    Maybe wraithan word carries more weight abachler. Will you care to listen to him?
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

  10. #25
    C++まいる!Cをこわせ! Elysia's Avatar
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    I'm using "Best" compression for both, so no problems there.
    First test for this file shows 3&#37; compression gain with 7zip (306 MB vs 314 MB).
    As for rar, 2% compression gain (308 MB vs 314 MB).

    File:
    http://ia300134.us.archive.org/1/ite..._HQ_part04.avi

    For tomorrow's test, I'll recompress the file (video compression) and recompress using both rar and 7z again.
    Last edited by Elysia; 02-11-2008 at 03:17 PM.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  11. #26
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    Quote Originally Posted by Elysia View Post
    Yeah, I know of that one as well as rapidshare. Only problem is that I don't want to upload via HTTP since I can't see when it's finished and I can't pause/resume and it will take forever, so I can't close the page and I can't resume if it fails, etc. That's why I prefer FTP.
    Well, Megaupload has a flash-based progress indicator that works fine for me, at least. No resume functionality AFAIK, though.

  12. #27
    Woof, woof! zacs7's Avatar
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    So it'd be really bad if we, rar'd a video, zipped the rar'd video, 7zipped the zipped rar'd video?

  13. #28
    Malum in se abachler's Avatar
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    OK, im dling that file, although its not exacly MPEG4, which is what my original claim was, Ill see what I can do with it.

    and when we are done with all that lets ARJ it just to be ........heads

    OK I finished DLing it and heres the results I got

    Original File - 330,127,360
    Compressed- 323,773,272

    Savings 6,354,088

    overall compression ratio 98&#37; (98.07%).
    Last edited by abachler; 02-11-2008 at 04:21 PM.
    Until you can build a working general purpose reprogrammable computer out of basic components from radio shack, you are not fit to call yourself a programmer in my presence. This is cwhizard, signing off.

  14. #29
    S Sang-drax's Avatar
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    Quote Originally Posted by abachler View Post
    I just compressed an MPEG4 stream coming form a camera and got 33% compression. (67% of original size).
    Hehe, well, you should try a more representative video stream and not one minute of unchanged video. I am not surprised that RAR was able to compress that video stream well.

    For those interested, the video he used was a view out from a window where nothing was changing except cars in the distance.
    Last edited by Sang-drax; 02-11-2008 at 05:08 PM.

  15. #30
    Captain Crash brewbuck's Avatar
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    Quote Originally Posted by abachler View Post
    Supply the original file so others can verify your results?
    Right. Because Elysia is just making it up. Paranoid much?

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