QUOTE(kevinwcw @ Oct 28 2007, 04:06 PM)
nowadays psp can support many kind of video.....and the UMD video is still the best quality for portable devices....Can ipodtouch/iphone beat it in future???? 
In my opinion, well... just my opinion lar... 1. User acceptance
2. Portability & flexibility of format
3. Proprietary or open system
4. The actual video performance
5. Compression, size to quality ratio
I mean, no use if a format is so good and versatile but it does not have a place in the marketplace. No use if a format is so great but you can't buy it at the common place. If format A want to compete with UMD, it simply do not need to because there's nothing to compete.
UMD video format is a proprietary format developed by Sony for the PSP. Nobody can buy this media off the shelves or get supply of this media and then publish it with your own content. No publisher can publish in this format without giving a royalty to Sony.
Next UMD can only be played on Sony PSP. Unless I'm mistaken, there's no other device using UMD at the moment. Of course the video performance is really promising for a form factor like a PSP. But how many of our favorite shows, favorite podcasts, videoblogs, dramas, and movies are published in UMD? I'm talking contents from various continents of the world. Yes, we do have good movies from the North America for UMD, but I don't think we have the same for Asian entertainment.
Then can you transcode UMD to another format and vice versa? This is the portability side of the format. Can you convert UMD to a MPEG4/H.264 or another format to UMD for viewing on PSP? You can't unless you use the memory card slot but that isn't UMD anymore.
I think the same goes to Ipod Video/Touch/iPhone. We need to transcode a content to something acceptable to these Ipods. Ipod cannot and PSP cannot so what's my point? In this case, we look at how many people are using these devices and how popular they are in the market place. In this case, we look at user acceptance. Note that I'm talking about DEVICE to play them. I believe each user of each camp would have an answer in this own mind by now.
Now we move to format. UMD format is a format glued to the disc. Meaning to say, UMD, the format, its compression algorithms and the physical information holder and the disc is ONE. UMD comes in a disc. I'm discounting those brave souls hacking the format from the disc and deliver them from memory cards. We're talking from a legal perspective.
MPEG4/H.264 is one versatile format. It do not have a fixed physical information holder. It doesn't necessary comes in a disc, you can download off the net, and you can obtain from different sources. All the popular formats like Windows Media Video 9/10/11 (WMV) , Real Media Variable Bitrate (RMVB), etc all use some form of processing from the MGEG4/H.264 process flow. You can transcode any format (with a proper software transcoder of course) to any format you want. MPEG4 is almost free for use and not tied down to a corporation. Those China made portable media players (PMP) can accept MPEG44 easily. iPod Video/Touch/iPhone uses a proper transcoded MPEG4 to play too. Most handphones record videos in MPEG4, 3GPP, etc.
Video quality hands down - UMD is great. But there's no point in using this format where I can't find any contents for it. There's no point in admiring this great quality by sticking to the few discs I ever own. I can't like watch the movie over and over again just to admire it.
Then again a lot of online music stores offer video at MPEG4. You can easily download movies in MPEG4 or RMVB or DIVX (in legal perspectives, please). The real show is that, I can transcode any of these formats to another for my whatever PMP I have. I can't do the same for UMD.
So I rest my case. Let the lashings begin
Oct 30 2007, 02:59 PM

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