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Ronhrin
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Location: Paradigms are changeable, reality is absolute.
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 Posted: Tue, 14th Feb 2006 21:58 Post subject: Recompress Xvid |
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I have a 900 Mb Xvid File and I wanted to recompress it to, let's say, 700 Mb, is there any software that makes this job with the push of a button?
thanks in advance 
He who sacrifices freedom for security deserves neither
- Benjamin Franklin - 1759
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werdercanuck
Posts: 1562
Location: Pot Capital of Canada (BC)
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| Posted: Tue, 14th Feb 2006 22:01 Post subject: |
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with the push of a button, no. and it wouldnt make much sense to recompress anyway, since xvid is already the highest compression, if i remember right. but, you could lower the resolution, that would save a few megs....or you could cut the opening and ending credits....
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Ronhrin
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Location: Paradigms are changeable, reality is absolute.
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| Posted: Tue, 14th Feb 2006 22:11 Post subject: |
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it's a video that I've captured from TV, it's not exactly HQ, and the thing is, it doens't make much sense to have a TVRip with 55 Min with 900 Mb, I wanted to compress it to 700 or even smaller.
there's nothing left that I can cut, only recompress it, how can I change the resolution, reduce the frame rate, or any other way to take some Mb's away from the file
He who sacrifices freedom for security deserves neither
- Benjamin Franklin - 1759
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werdercanuck
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Location: Pot Capital of Canada (BC)
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| Posted: Tue, 14th Feb 2006 22:16 Post subject: |
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do you want to fit it on a cd? and what resolution does it have at 900mb?
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Ronhrin
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| Posted: Tue, 14th Feb 2006 22:24 Post subject: |
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512x384 @25.000 fps
He who sacrifices freedom for security deserves neither
- Benjamin Franklin - 1759
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werdercanuck
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Location: Pot Capital of Canada (BC)
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| Posted: Tue, 14th Feb 2006 22:28 Post subject: |
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well, if you dont mind a major quality loss, you could use 352x288 (pal). thats vcd quality...
1F U C4N R34D 7H1S, U R34LLY N33D 70 G37 L41D
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| Posted: Tue, 14th Feb 2006 22:40 Post subject: |
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What kind of audio has it got, lowering the bitrate might make some difference.
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werdercanuck
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| Posted: Tue, 14th Feb 2006 22:41 Post subject: |
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not really, well depends how long it is...
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Ronhrin
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| Posted: Tue, 14th Feb 2006 23:05 Post subject: |
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but how exactly can I do that?
He who sacrifices freedom for security deserves neither
- Benjamin Franklin - 1759
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werdercanuck
Posts: 1562
Location: Pot Capital of Canada (BC)
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| Posted: Tue, 14th Feb 2006 23:09 Post subject: |
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if i dont care much about quality i use winavi, there i can set the audio bitrate, and also the output size and resolution etc.
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ToCS
Posts: 433
Location: -USA-
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| Posted: Wed, 15th Feb 2006 00:26 Post subject: |
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not really a "1-clicker" but you could try gordianknot, it's prolly the easiest you can find that will use the good tools to convert down to 700mb.
http://gordianknot.sourceforge.net/
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| Posted: Wed, 15th Feb 2006 00:53 Post subject: |
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It'll look like crap if you try to transcode it. Your best bet is probably to splice it in two and not grab directly to the (lossy) target format the next time you record something.
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ToCS
Posts: 433
Location: -USA-
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| Posted: Wed, 15th Feb 2006 01:08 Post subject: |
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| indiana wrote: | | It'll look like crap if you try to transcode it. |
if done right it should look as good as the original, considering the size for the time of the clip. but if the source looks to shitty i would just go ahead and recap it if possible.
also, shouldnt this be in encoders heaven?
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| Posted: Wed, 15th Feb 2006 14:17 Post subject: |
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wow
there's a very high volume of bullshit in this thread
gordianknot is for dvd ripping - not avi-avi recompression
xvid is not "the highest form of compression" in a way as if it has only one fixed bitrate setting
resolution is indirectly related to final filesize, but fully dependant on xvid settings
recompressing already heavily compressed video such as xvid is always a very bad idea
decompression, post processing, preprocessing for recompress and compression again, causes visual degradation
depends on the original quality and type of footage, ofcourse, but some blurring is unavoidable
so i would advice against it
if you have a Proper cd burner, get a 900M CD and burn it on that (yes, there are some.. look around)
if it's still oversized or you just plain want it smaller...
get virtualdubmod http://virtualdubmod.sourceforge.net/
get xvid http://www.koepi.org/xvid.shtml (latest build causes problems for me, so the 'final' build from december would probably be a good safe bet)
open the video in vdubmod
http://www.doom9.org/index.html?/xvid-vdub-11.htm
with two pass encoding you can decide on a file size that you want to be aiming at, and video quality will degrade accordingly
this tutorial pretty much shows a pretty deep xvid walkthrough
but you can skip most setting fiddling as the default settings are pretty optimal already
just get the film length right atleast
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ToCS
Posts: 433
Location: -USA-
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| Posted: Wed, 15th Feb 2006 16:45 Post subject: |
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@shole ~ obviously you didnt read the first post, or the third post. i think its safe to say that recompressing down to 700mb from 900mb would not hurt the quallity in anyway (beit using gknot, or manually using vdub/nandub/besweet) and especially since the video is only 55min.
gordianknot can do avi-avi, he asked for a push of a button program to.. gordianknot comes with all the necessary tools such as virtualdub and nandub for the video, besweet for the audio, and all the proper codecs, does all the calculations for you and is pretty self explanitory for the beginner.
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| Posted: Thu, 16th Feb 2006 00:53 Post subject: |
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well, there will still be significant quality loss in post processing after decoding and re-encoding phases
the same kind of loss happens with all wmv compression.. it can look good, but it immediately removes detail and grain from the footage to make it easier to compress
probably not noticable if you're not looking for it, or if it is of no importance
i have the full dharma&greg series in blurry wmv, and in a silly sitcom like that, the quality is a non-issue
i'm just a bit of a perfectionist when it comes to material that rely on visual detail
if gknot can do that, great
i thought it was just for dvd ripping
it's a nice idea, but not very foolproof in functionality.. being a dozen pieces of software scripted on top of eachother
i just had lots of trouble with it breaking halfway ripping (tried several versions), so i now just copy the dvd over on HD and encode directly with vdubmod
but if it's more stable these days, it's great for beginners
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spankie
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Location: Belgium
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| Posted: Sat, 18th Feb 2006 11:48 Post subject: |
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gordian knot does not give significant loss if you recompress an xvid. I do it all the time when i compress things i recorded from my television.
Just install gordian know, and lower bitrate, lower resolution untill you have 750mb. then compress. And afterwards cut away some credits or intro stuff, or commercials. And you'll have 700 mb.
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