Windows 7: Release Candidate 1 Preview
by Ryan Smith and Gary Key on May 5, 2009 11:00 PM EST- Posted in
- Systems
Windows Media : New Codecs, New Looks, New Features
One of the more annoying aspects of setting up a new Windows computer is how little media Windows can play right out of the box. With Vista Home Premium there is support for MPEG-1 and MPEG-2 video, MP3 and AC3 audio, and Windows Media Audio and Video. What has been lacking however is support for more modern video codecs such as MPEG-4 ASP and H.264, along with AAC audio and the container formats these use. This has put Windows well behind most Linux distributions, which include media players capable of playing everything under the sun, and even Mac OS X which includes full H.264/AAC/MP4 support through QuickTime.
With Windows 7 that’s all changing. Windows 7 includes codecs for all the above-mentioned formats and their containers, along with AAC+ (commonly used for streaming audio). This gives Windows 7 the ability to play most common media formats, notably the old standard of Xvid/DivX (MPEG-4 ASP) encoded video inside of an AVI container, and the new standard of H.264 inside of an MP4 container. At this point the only relatively common things Windows 7 can’t read are Matroska containers (which usually contain H.264 video and AC3 audio), DivX3 video, and anything OGG (sorry guys).
The new decoders are available as DirectShow, DirectX Media Object, and Media Foundation codecs, allowing new and old programs alike to access them. This includes both Microsoft applications like Windows Media Center, and 3rd party applications like Media Player Classic Home Cinema. Oh, and did we mention that the MPEG-2 and H.264 decoders are multi-threaded and DXVA accelerated?
Windows Media Player playing a 30Mb H.264 clip entirely in software without breaking a sweat
In our informal testing thus far, once we installed a Matroska splitter we have been unable to find anything that Windows Media Player can’t play. It even manages to play newer QuickTime MOV files, as a result of the MP4 container being based off of the MOV container. The performance of the codecs looks good too. Since the H.264 codec is multi-threaded, it had no issue playing back our 30Mb 1080P test clip even without DXVA acceleration - this clip tends to kill most software codecs. For MPEG-4 ASP, we need to investigate the quality a bit more. It's looking like the Microsoft codecs don't have any post-processing features, which wouldn't surprise us but would put it behind DivX/Xvid in quality.
This brings us to Windows Media Player, which is up to version 12 as of Windows 7. There are few GUI changes to speak of, but the same cannot be said for features. With the aforementioned new codecs, WMP gains the ability to read more shared libraries than just WMP’s; in particular iTunes libraries are now supported, with the exception of songs protected with FairPlay DRM.
Microsoft has also taken a page out of the playbook of media streaming applications like Simplify Media, with the addition of internet streaming capabilities. Currently this requires a Windows Live ID for authentication/security purposes, and only WMP12 works as a client. We know that Windows 7 includes some basic audio/video transcoding features as part of the Media Foundation, and presumably WMP12 is using these features to serve up media. We haven’t had a chance to test this specific feature yet, so we’ll have to get back to it with the final version of Windows 7.
WMP Internet Streaming Configuration
Meanwhile Windows Media Center (7MC), Microsoft’s 10ft UI for HTPC use, has received a much bigger overhaul for Windows 7. The GUI has been given a minor reworking (it’s best described as more Zune-like) but it’s the guts that make all the difference. With the addition of H.264 support to Windows 7, 7MC is now suitable for TV reception in more environments besides North American cable and OTA TV. We’ve previously mentioned DirecTV as a likely addition in the future, and this would also extend to services like IPTV and Freeview, both of which are starting to use H.264.
Windows Media Center 7 UI
ClearQAM support is also officially in for 7MC, which means users of the HDHomeRun and other ClearQAM-capable tuners can now pull in unencrypted cable TV networks and watch them on 7MC.
Finally, as we mentioned previously Microsoft has added some transcode abilities to Windows 7 via the Media Foundation Transcode interface. There’s nothing here that will knock your socks off, but via MFT Windows 7 can encode material into a format suitable for mobile devices – that being H.264 video and AAC audio inside of an MP4 container. With mobile devices being the focus of this feature, it should come as no surprise that the H.264 encoder is fairly limited in scope. It can do Baseline profile at SD resolutions up to 1.5Mbps, which is good enough for mobile devices but is not any kind of competition for x264 or other full-feature H.264 encoders.
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Gary Key - Thursday, May 7, 2009 - link
Actually, the public release of the 8.612 betas work fine with the HD 4770. AMD made a couple of changes right before they were posted on the site. :)CSMR - Wednesday, May 6, 2009 - link
Best source of information on Windows 7 by far. Nice work!ssj4Gogeta - Wednesday, May 6, 2009 - link
In the article you said that the "Jump Menus" have their roots in OS X? Not at all. They've been their for years. The only example I can think of at this time is Winamp. It had a "jump menu" in Windows 98 for controlling playback.Axell - Wednesday, May 6, 2009 - link
Well, this is actually Windows 7 Release Candidate. There won't be a second RC, so it's "Release Candidate" only, no RC1 like the title and text suggests.vectorm12 - Wednesday, May 6, 2009 - link
Just for the sake of argument.Ever thought about how long it usually takes for MS to actually make their OS:es work well? Doesn't anyone remember what a abysmal OS XP was before SP1 let alone SP2(which in my opinion was the point where I felt confident enough to upgrade from win2k). I'm starting to wonder if people have actually forgotten how much they where complaining about XP before SP1&2 or if they just don't want to remember. What about the security vulnerabilities that still plague XP? The fact that both Vista and Win7 improves on these seem to have been lost in the quest to keep XP alive.
After all do you hear Apple users complaining about 10.5.6 being significantly slower in many respects than 10.4? The fact that 10.4 in my opinion had a bunch of features lost in 10.5 that where really useful doesn't seem to bother them half as much. In the end I think this whole discussion has become more of a "hey I'm cool for bashing Microsoft and Vista rather than keeping an open mind and actually seeing the improvements they make"
How long did it take for Microsoft to make windows 2k a better OS than NT4.0 besides the USB support (which for the first couple of years was more or less pointless anyway).
Windows 95 and RC2 and so on. I mean it usually takes years for MS to actually make a OS superior to the older version.
What sets Windows7 apart from Vista in my opinion is just that.
Windows 7 may as well be a dressed up/optimized/"insert random comment" version of Windows Vista. Sure they could have made major GUI changes and feature updates to Vista through service packs etc but the fact is that when people hear or think vista it usually equals "dog turd" or worse and usually that is because it's become cool to bash Vista. In my opinion I wouldn't hesitate to run Vista SP1 on our studio computer where I work but unfortunately most of the software required for production purposes require specific software configurations which means Vista isn't supported other than in the latest releases.
The name change is a chance for people to try what in many ways is a vastly improved OS without having that association in mind when doing so. Sure Windows 7 is still more bloated and in certain areas probably slower than XP because of bloated code/new functions etc but the fact is Microsoft has actually taken a lot of great functionality in vista and(most likely taken inspiration from Mac OS in certain areas) and improved upon it even further.
I for one want a Microsoft OS for my gaming computer. I can't be bothered running Linux and wine just to play WoW and run the Adobe suite. Given the choice I'm going for Win7 rather than XP or vista, it's safer, I've got performance to spare and there's nothing wrong with a little eyecandy to make things look more exciting.
Macs are fine but to be honest I don't like OS x THAT much to pay the premium.
Linux works perfectly on my work computer and on the servers I run at work or on my laptop that I use to surf the web.
leexgx - Wednesday, May 6, 2009 - link
apart from some drivers XP has allways worked well for me (+ i was behind an router so RDP basid worms was not an problem),Vista is slugish and bloted for the most part and it allways will be as thay not port stuff to vista that are makeing windows 7 run far more smoother,
i have loaded win 7 onto an amd64 3000+ 2ghz, 2gb ram, it works well there is One small bug not sure why but it thinks i got 16gb installed in an socket 754 socket lol, but lists 2gb useable (at least Win7 now Shows Both numbers useable and installed as on SP1 for vista that was an joke hideing useable ram) need to report that to MS but not sure where i submit that
Lexington02 - Wednesday, May 6, 2009 - link
:face palm:You have 32 bit and that is not MS's fault for 32bit portion, it is pure math. Also 64 bit will always be slower than 32 bit on the same specs. Think about it, 64 is twice as big as 32 bit...
Bmadd - Wednesday, May 6, 2009 - link
If any of that was refering to my post my Thanks MS was for giving me the features i wanted and not having to go to win7. Not that they make bad products. I love the one ppl "hate" the most. PS xp needs to be laid to rest, pleaseiAURA - Wednesday, May 6, 2009 - link
I'm in the same boat as the above poster, all I will get from W7 is a "funner" GUI and DX11, but hey, there's still tons of game being released as DX9 games.ssj4Gogeta - Wednesday, May 6, 2009 - link
DX11 will be released for Vista as well.