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Windows compression settings

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Tom Mooney
Windows compression settings
on Jun 4, 2009 at 7:52:37 pm

We have over 20 hours of HD video that we need to deliver as WMV files. The client is going to load the movies on a designated laptop so they will played back off of the Hard Drive. What would be a recommended data rate to use considering the files will not be streamed or transferred over the web? File size is not an issue. Also, what would be a good window size to use? Thanks in advance.


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Chris Blair
Re: Windows compression settings
on Jun 6, 2009 at 12:51:33 am

You could likely go as high as 5MB/sec and still get consistent playback off of a newer, high-end laptop. But data rates (around 2-3MB/sec) would be more reliable. I'd suggest using 2-pass wmv encoding if you're got that option from your transcoding application or process.

As for size, we've output HD files as big as 1280x720 in the wmv format and had no issues playing them back from a laptop that has a lot of horsepower and a good-quality graphics card. I'm sure you could do other sizes too.

I'm curious if there is any particular reason they want wmv? There are many other formats that would likely be as good or higher quality, be more efficient and require smaller file sizes. H264, VC1, and MPG2 would all easily playback at NTSC sizes (720x480) and look great.

Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com


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Tom Mooney
Re: Windows compression settings
on Jun 6, 2009 at 1:36:25 pm

We are exploring doing the encodings in H264. Their is a potential that the movies may need to be played back on multiple computers and as a rule they do not load Quicktime on their systems. I am most concerned about the bit rate which we will probably stick with something around 3MB/sec to play it safe.



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Chris Blair
Re: Windows compression settings
on Jun 6, 2009 at 3:02:02 pm

There are other media players out there that will play just about any file type. VLC (Video Lan Client) Player, KM Player and M Player all come to mind. They're all free and all are very small, simple installs. In fact, I don't believe any of them install additional codecs or windows system files.

Here are some links:

http://www.videolan.org/vlc/

http://kmplayer.en.softonic.com/download

http://www.softpedia.com/get/Multimedia/Video/Video-Players/MPlayer-for-Win...


Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com


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