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Need help for converting movie clips.

Discussion in 'General' started by segaduck, Dec 1, 2002.

  1. segaduck

    segaduck Well-Known Member

    As people who has already downloaded the latest movies from Taiwan, you might find that the quality is not so good and files are still big. Can anyone provide some tutorials for converting? Because they are more 3on3 clips need to be converted, and it will be very helpful if anyone can teach me how to do, or just give me links to the tutorials. Thanks.

    I tried to use VirtualDub1.4c and Divx 5.02 pro codec, but the result was still too big (20MB for a single match). What parameters should I change?
     
  2. Fishie

    Fishie Well-Known Member

    Totaly unrelated but I dont think initial D uses a VF4Evo card system.
     
  3. Myke

    Myke Administrator Staff Member Content Manager Kage

    PSN:
    Myke623
    XBL:
    Myke623
    I haven't seen these Taiwan movies yet, but I have some general advice to keep your movie sizes down.

    Datarate (kb/s) : This is a setting you can try to tweak to reduce the total size. A direct feed movie at around 500kb/s is very good quality (e.g. am.sega movies) although I've seen stuff that is 'watchable' at around 300kb/s. It's a tradeoff between quality and filesize, so try to lower this setting as much as you can while the final movie is still watchable.

    Resolution : Typical movie resolutions are 320x240 so it's pretty safe to stick with that. Resolutions larger than this aren't usually necessary, especially for VF movies IMO.

    Audio : Make sure you're compressing Audio too!


    p.s. Almaci, please stfu. Segaduck is only expressing his desire for a card system similar to Initial D's.
     
  4. CreeD

    CreeD Well-Known Member

    Hey segaduck, some other tips for making avi's with virtualdub -

    Audio should be true mp3, not Lame Mp3 or Cool Mp3 or one of the other hacked codecs. Click the box that says 'show all formats'.. I like 112 kbit/S, 48,000 hZ, Stereo. It uses up 14 Kb/s for audio, which is fine.

    For video, divx has some checkboxes on the right like "use gmc" and "use quarter pixel". Those two are pretty safe to check, if your bitrate is too low they will cause a weird swimming effect on the video. Anyway check those to knock off another 5-10% or so.

    For bitrate, 500-750 is fine.

    Finally, it's possible to do two pass encoding, where it encodes once to figure out where there's room for improvement, then encodes again. You'll get smaller filesizes (20-30 percent smaller I'd guess) but it takes twice as long to encode.

    If you want to do two pass encoding, just follow these steps.

    1. Get all the settings just the way you like, and in the divx options screen put the dropdown at 2-pass, First Pass. Click ok.

    2. Click file --> Save AVI, and check the box at the bottom (the one that says 'defer processing') ...also when you name the avi, give it a name like blah-pass1.avi

    3. Go back to video -> compression -> divx -> and in the divx options screen, change the dropdown to 2 pass, 2nd pass. You can adjust settings here, but I'd recommend that you leave them alone. Click OK

    4. Click file -> save AVI -> give it the name you want for your final product. You also want to check that box again - defer processing.

    5. Press F4 to bring up your jobs list, and you'll see two jobs waiting (pass 1 and pass 2). Just click start and sit back. After a little while you'll end up with two movies. The first one, pass 1, is garbage... it can be deleted. The second one should be a really well-encoded match.

    6. Divx will put a chunky text file called divx.log wherever you saved your newly-encoded movies. Be sure to delete that file. If you don't, divx will use it the next time it encodes a 2 pass movie, and the result will be a much LARGER movie instead of a smaller one. Doh.
    ========
    When TBzone put up their first divx AVI's, they were about 20 megs a match also. That's not unusual for high quality stuff. I'm really glad you're going with divx here, as divx is easy to fool with and wmv is not. Good luck.
     
  5. segaduck

    segaduck Well-Known Member

    To Myke and CreeD:

    Thanks for your help. I will try it now. /versus/images/icons/smile.gif
     
  6. uk-guy

    uk-guy Well-Known Member

    If it's about size than I would say def go with the two-pass. Also try X-vid, IMO it is even better than div502, and similar to div502 for for 2-pass set-up.

    Also when it comes to sound I would say 112k 48kz is maybe overkill for vf matches. I have gone as low as 22k 22kz, which IMO is fine and also makes files quite a bit smaller. Consequently if you are going for 112k 48kz MP3 audio why not try VBR (2-pass) 128k 48kz audio instead, can sometimes be smaller in size AND better quality, win win;)

    I have to say (even though i hate M$) that WM9 is amazing, esepcially in 2-pass 500kbs with 64k 48khz audio, nothing can touch it, but it takes about TWICE as long to encode! Unfortunately it is quite hard to encode stuff to wm9 if it isn't recognoised by M$'s encoder, and WM9 is just a pain to try and convert to something else as-well, not a problem if you just want compact files, but a pain if you wanted to edit something, i.e. taking out stuff like character select screens or lengthy replays.
     

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