Video Compression

Brett_C · 11-29-2006, 08:13 PM

Hi there,

In short my buddies and I have put together a short film of our hobby ‘spearfishing’. I did up a short trailer of the film to email my mates, but the quality is not spectacular. I compressed it using the windows movie maker to about 5.4mb, not being very experienced in this area I don’t know if that is as good as I can do it or whether there is another way.

To give you an idea of the quality the clip can be viewed via this link;

http://www.bluevisions.net/play_trailer.php

Any suggestions would be most welcome.

Cheers.

Brett

**koala** · 11-29-2006, 08:29 PM

Hi Brett, welcome to TSF

The picture quality looks great considering you've managed to fit 2mins30 into just 5mb. The sound quality isn't quite as good though, sounds a bit tinny.

I'm no video expert, so I'll leave the advice to the others, but to give us something to work with.... what settings did you use in Movie Maker?

If you're looking to reduce the filesize, you could change the audio from 32000Hz stereo to 22000Hz mono.

If you're looking to improve the video quality, try a different codec like divX instead of WMV and increase the dimensions from 320x240. This will give a sharper image in fullscreen but at the expense of filesize.

ebackhus · 11-30-2006, 08:34 AM

I'm at work so I can't view or hear the clip. Koala's suggestions are right on target. Is the audio in it stereo or monoraul? If it's monoraul you can knock the frequency down to 20Khz with almost no loss in overall quality. WMV is a decent encoder, but XviD will give you more bang for your digital buck (file size).

Brett_C · 11-30-2006, 01:55 PM

Thanks guys, great suggestions I will have a play with them and see how it goes.

Cheers

zuluclayman · 01-22-2008, 03:44 AM

When making videos I use premier elements (you can use whatever editing software you have) and export it at top quality in both sound and video. This makes for large file sizes. I then use Auto Gordian Knot free compression software. This allows you to choose amount of compression and codecs include divX and Xvid - you can choose a target size or a target percentage in quality. Post editing compression always seems to give better results than using high compression codecs within the editing software. best of all AGK is free! download all the addons which include audio codecs and VirtualDub.

11-29-2006, 08:13 PM	#1 (permalink)
Brett_C Registered User Join Date: Nov 2006 Posts: 2 OS: xp	Video Compression Hi there, In short my buddies and I have put together a short film of our hobby ‘spearfishing’. I did up a short trailer of the film to email my mates, but the quality is not spectacular. I compressed it using the windows movie maker to about 5.4mb, not being very experienced in this area I don’t know if that is as good as I can do it or whether there is another way. To give you an idea of the quality the clip can be viewed via this link; http://www.bluevisions.net/play_trailer.php Any suggestions would be most welcome. Cheers. Brett

11-29-2006, 08:29 PM	#2 (permalink)
koala Moderator Hardware Team Join Date: Mar 2005 Location: UK Posts: 8,187 OS: XP/UBUNTU My System	Hi Brett, welcome to TSF The picture quality looks great considering you've managed to fit 2mins30 into just 5mb. The sound quality isn't quite as good though, sounds a bit tinny. I'm no video expert, so I'll leave the advice to the others, but to give us something to work with.... what settings did you use in Movie Maker? If you're looking to reduce the filesize, you could change the audio from 32000Hz stereo to 22000Hz mono. If you're looking to improve the video quality, try a different codec like divX instead of WMV and increase the dimensions from 320x240. This will give a sharper image in fullscreen but at the expense of filesize. __________________ New members: Subscribe to your thread (Thread Tools) to receive an instant email notification when you get a reply. TSF Folding@Home Team 85015 - details here Last edited by koala : 11-29-2006 at 08:30 PM.

11-30-2006, 08:34 AM	#3 (permalink)
ebackhus Asst. Manager, Design Join Date: Apr 2005 Location: SATX Posts: 12,294 OS: WinXP Pro SP2b My System Blog Entries: 14	I'm at work so I can't view or hear the clip. Koala's suggestions are right on target. Is the audio in it stereo or monoraul? If it's monoraul you can knock the frequency down to 20Khz with almost no loss in overall quality. WMV is a decent encoder, but XviD will give you more bang for your digital buck (file size). __________________ ----------------------------- There are no dumb questions, unless a customer is asking them. Help in the fight against cancer and other serious illnesses. Last edited by ebackhus : 11-30-2006 at 02:32 PM. Reason: big typo ><;

01-22-2008, 03:44 AM	#5 (permalink)
zuluclayman Registered User Join Date: Dec 2005 Location: Newcastle NSW Australia Posts: 153 OS: WindowsXPSP2	Re: Video Compression When making videos I use premier elements (you can use whatever editing software you have) and export it at top quality in both sound and video. This makes for large file sizes. I then use Auto Gordian Knot free compression software. This allows you to choose amount of compression and codecs include divX and Xvid - you can choose a target size or a target percentage in quality. Post editing compression always seems to give better results than using high compression codecs within the editing software. best of all AGK is free! download all the addons which include audio codecs and VirtualDub.

11-30-2006, 01:55 PM	#4 (permalink)
Brett_C Registered User Join Date: Nov 2006 Posts: 2 OS: xp	Thanks guys, great suggestions I will have a play with them and see how it goes. Cheers