Sunday, November 11, 2007

A Not So Simple Solution

Sorry if this post gets a little more technical than usual. Sometimes there just doesn't seem to be a simple solution.

I really like Microsoft PhotoStory. It's a simple, easy tool that lets teachers and students create digital stories. What's not simple is trying to play these stories on a Mac. This has become a problem because some of our teachers like to post their PhotoStory files on their class web site. Parents with Macs at home can't view them.

Flip4Mac is a free Quicktime plugin that allows the Mac Quicktime player to play Windows Media files (wmv's) but for some reason it will not seem to play files created by PhotoStory. Real Player for Mac won't play them either.

After a some research I discovered something about the PhotoStory Video Codec. Apparently Microsoft PhotoStory 3 does NOT use the standard Windows Media Video (WMV) codec but a special codec developed for compressing still images: Windows Media Video 9 Image v2.

One solution for playing these files on a Mac is to convert them to .mov files. I've used Zamzar and that seems to work but the file size increases. My 6.5MB Photostory file converted to a 16.2MB .mov file. Even though the file size more than doubles, the picture quality of the converted file doesn't seem to be as good.

Another solution is to use use Windows Media Encoder (another free download from Microsoft) to convert your PhotoStory file to a file that will play on Quicktime with the Flip4Mac plug-in.



When you convert your file using Windows Media Encoder, use the following settings:
  1. For "Content Distribution" select - File Download (Computer Playback)
  2. For "Encoding Options" select...
  • Video - VHS Quality (250 Kbps VBR)
  • Audio - CD Quality (VBR)

My 6.5MB photostory file converted to a 11.3MB wmv file that plays on my Mac.

Using media encoder seems to give me a better quality conversion and lower file size than using Zamzar and converting to a .mov file.

Now I just have to train our teachers to convert their completed video file before they post it online AND tell our Mac using parents that they need to download and install the Flip4Mac plug-in to view their class videos.

As I said, sometimes the solution is not that simple.

4 comments:

D Kootman said...

thats good to know Dennis. Always a benefit when someone else does the legwork to benefit all ;)

This summer I spent a lot of time trying to figure out how to convert a SWF file to something more acceptable. I ended up screencasting my output.

Wouldn't it be nice if all file types could just get along?

MrMartinsClass said...

Nice reference! Thanks

Anonymous said...

Thanks Dennis! We have been running workshops on Digital Storytelling utilising Photo Story 3 with Finn Cragg's multimedia for creative, fantasy stories. We have some excellent student samples and with your instructions to convert the WMV files successfully to Quicktime we can share cross-platform and post on the web. You may be interested in our work - see www.finncragg.com. We'd love to hear your thoughts about whether schools in USA would benefit from Finn Cragg's multimedia resources. Best regards and thanks again for doing the hardwork sorting this problem out! Lyn H lyn@finncragg.com Australia.

Anonymous said...

Thank you for posting this. This is the exact information that I needed! And your directions worked perfectly.