Mpeg2 Compatibility

I just bought Premiere Pro CS3, installed it last night, and was very excited to begin using it. Now after using it, and reading the forum of incompatibility issues with MPEG2 such as no audio or Random red frames, I think I made a mistake in my purchase decision. Ironically, many suggestions to correct involved the use of other Adobe products, I guess Premiere is not as premiere as the Adobe marketing suggests.
I know, I know one of the first things Im going to be told is to use a real video format, not Mpeg2, or to convert all my video to real video format.
I agree Mpeg2 has many limitations, but Mpeg2 is a widely used and dominant standard in the consumer market. All new hard drive/memory camcorders use this format, unless you choose HiDef in which AVCHD by Song and Panasonic seems to be an option. Im using a JVC GZ-MG155u camcorder which records in Mpeg2 format.
And yes, Im a general consumer, not a video professional, but one of the highly targeted audiences Adobe believes should be using this product for home use.
So when I read the Premier Pro CS3 feature list with the following statements:
Comprehensive video-format compatibility - Work with the formats you want. Edit all standard- or high-definition formats, from DV and HDV to HD and beyond (some formats may require additional hardware).
Native HDV editing - Capture and edit HDV content in real time and in its original format with no conversion or quality loss. Adobe Premiere Pro CS3 supports HDV cameras and VTRs from Sony, JVC, and Canon.
http://www.adobe.com/products/premiere/features/allfeatures/
I too believe Mpeg2 should work flawlessly, as do many other users who have posted similar comments in this forum. The simple truth is that Adobe needs to fix these Mpeg2 compatibility issues. Ironically when I use Adobe Bridge CS3, or cheaper editing software such as Roxio, my videos play/edit just fine. Therefore the knowledge is known on how to accommodate the limited Mpeg2 format standard across multiple manufacturers of popular consumer products, please apply this knowledge to Premiere Pro CS3.

> agree Mpeg2 has many limitations, but Mpeg2 is a widely used and dominant standard in the consumer market.
> or cheaper editing software such as Roxio, my videos play/edit just fine.
Then use a consumer Editor like Elements, its' (and cheaper programs) mpeg capabilities are great.
In general editing MPEG in PPRO is a hit and miss for some people, for me I have only had a problem once with MPEG, and have been fine ever since.
Jim you fail to take into account that there are literally hundreds of programs and camera's that record mpeg material, and therefore many different variations, and there is only 1 Premiere.
Again you need to understand MPEG is a delivery format not meant for editing. The reason it is on consumer cameras is because they (manufacturers) are trying to remove the editing stage and make it easier for people wanting to view the footage right away.
> I guess Premiere is not as premiere as the Adobe marketing suggests.
It is! It edits DV, and the mpeg from an HDV camera works fine.
This is a user to user forum, what exactly is your question?

Similar Messages

MPEG2 imported from Sonny HDD camera yeilds poor quality. Is this normal?

I'm still struggling with iMovie and my new Sonny HDD, DCR-S200. It records to an MPEG2 format. When I import video clips from the camera into iMovie and then view the results, the scenes seem to be missing frames. The playback is not smooth. As the scroll bar is jerky (brief pauses) when it travels over the frames it's playing. The movies are also not smooth, but jerky (brief pauses). The sound is fine.Is this the best I can expect? Is the problem with MPEG2 compatibility with iMovie?
Any suggestions or advice?

Your PowerPC G5 is at the very bottom end of machines capable of running iMovie.
Have you tried rendering your project? Is the final shared project also poor? It should be fine, because in the process of rendering, it will go as slow as it needs to, but make every calculation.
See this link for iLife System Requirements. iMovie needs minimum G5 with 1.9Ghz or faster
http://www.apple.com/ilife/systemrequirements.html
Message was edited by: AppleMan1958

Camcorder compatibility w/ Mac

I've read conflicting info about camcorder compatibility with macs. Some say that using a firewall there is no issue uploading from any brand of minidvd camcorders. Others say this is not true, swear up and down that there are compatibility problems w/ Canon models vs. other brands. I want to purchase a Canon ZR900, ZR930 or ZR950 as these have had good reviews but am reluctant to do so until this question is answered.
Thank you!

The firewall in Mac OS X has absolutely no bearing on camcorder compatibility. The camcorder does not use the network.
With regard to mini-DVD camcorders, they record their video in MPEG2 format, which suffers two problems: 1.) it's a highly-compressed lossy format that's really poor for editing (the video they shoot is not intended to be edited, only played back as is); 2.) recompressing the MPEG2 to create a new movie makes things worse.
Since you're asking about the Canon ZR series, and they are MiniDV and not mini-DVD camcorders, that may not be important to you.
Canon models don't have any particular problems. It's true that they use what OS X calls the FireWire basic profile (IEEE-1394 raw video) rather than IEEE-1394 DV, but the problem there is only that the OS X FireWire driver drops frames (rare, but it happens) sometimes with the basic profile. You generally won't notice, but it can be annoying (you can run Linux on your Mac and it works just fine, it's not a hardware issue). Just make sure that if you use Final Cut you turn off the option to terminate if a frame is lost (and there's a bug in FC where a dropped frame causes it to lose VTR control of the camcorder).
That said I have a Canon ZR mini-DV camcorder (ZR500 -- standard definition), and it's a nice little camera. It's performance in low-light is not all that great, but in well-lit situations the video is quite good. Were I to buy a new camcorder, I'd go with a high-definition model that does 1080i, even if I were outputting to DVD because the sharpness of the video pops even there. However, though I am fond of the MiniDV cassettes as a backup medium, there's some huge advantages to SD and HD storage for camcorders (for example, no low-frequency hum from the DV tape mechanism), but AVCHD is really tough (takes a lot out of your computer) to work with.

Export MPEG2 from Final Cut, HDV for use it on PC platform

My client needs to upload the videos in a PC network, he asked me to deliver the final videos on MPEG 2. I have tried to export by using compressor but the clips come out without sound. How can I have the videos with sound and in MPEG 2?
Or is there any other format that I can export on, so the videos can run on a PC? I tried WMP from Quicktime but it only exports up to 30 seconds. Do I have to buy a Flip4mac to be able to export a longer file ? and if so which version of Flip4mac is advisable?
Please help me. Thanks.

I noted that by doing WMP videos the files are way smaller in size, which is very good for me because I have to FTP 20 videos of 2 min. each to my client. Is WMP the same quality or equivalent to MPEG 2?
I assume you mean WMV files?
Yes, WMVs can be superior to MPEG2 files, but it's all about the choices you make when you encode encoding them. It's also possible to get very acceptable WMVs at very small file sizes, again depending on your content and your encoding expertise.
Flip4Mac's documentation will take you through the steps and the choices. Pay attention to the details and test, test test.
I've found that Windows users are always happier with WMVs, as there are never any compatibility issues - and the last thing I need when the deadline is getting closer is troubleshooting my client's windows installations.
Best of luck.

Converting into AVI, Mpeg2, and WMV

What's the best way to convert files into AVI, Mpeg2 and WMV from Final Cut Pro? Should I convert into .mov then convert into those from another program? As far as I know, Final Cut only does Mpeg2. I would like to get the best quality.

Concerning AVI, it depends on what codec you want within the AVI container. How will the AVI be used? Is it going to be further compressed on a Windows system, or used in Premiere on a Wiindows computer, or perhaps played from within PowerPoint?
Really, the only good reason to make an AVI any more is to provide compatibility with certain software on the Windows platform that still requires it. Otherwise, Windows Media or Quicktime provide better solutions.

Losing Audio, MPEG2, Linear PCM

I'm attempting to take all of my home videos from the past 10 years that have been carfully edited, categorized etc.. and convert them to a common H.264 format. Over the years I've used a variety of editors, mostly on Windows, to create the finished products and as such I'm dealing with a variety of codec and container issues.
The latest issue I've run into has to do with .mpg files that contain mpeg2 video along with 160 Linear PCM audio. They play fine in Winodws but QT X refuses to play them nicely. I've got FCPX and Compressor 4 installed on this machine and other non Linear PCM audio MPEG 2 files play fine.
When I try and convert these files to H.264 using Compressor 4 the program converts the video just fine but basically ignores the audio since it believes there isn't any (as seen in Compressor Inspector). Other programs such as MPEG Streamclip, Handbrake etc.. deal with the audio just fine. I'd use those programs to do the transcode but I'm trying to have a consistent transcoder so that I do not run into compatibility issues down the road. Any idea why Compressor cannot see this audio?
Another option I tried was to demux the stream before transcoding. I could successfully do that and get the audio into an .aiff but do not know if compressor is capable of remuxing ( I don't believe it is ). TSMuxer which I've used before doesn't appear to be compatbile with Lion either so I'm looking for other ideas.
Any help would be appreciated.
Thanks

paoloj wrote:
Is Compressor the best software to convert MPEG 2 to H 264 ?
To answer your question, no. Use the MPEG Streamclip to convert your video. You can also use the Handbreak app.
http://handbrake.fr/
It's free....

No sound in MPEG2 video after upgrading to QT 7.6.6

I still have a problem with QT playing the sound of MPEG2 videos after upgrading to QT 7.6. I had this problem one year ago and solved it by downgrading to QT 7.5. Now I did the automatic update suggested by the system which insrtalled QT 7.6.6
Unfortunately again no sound when playing MPEG2 videos (I have the MPEG2 QT component installed). When converting the video to MPEG1 or MP4 there are no problems at all. So it seems to be a problem of the MPEG2 component together with QT 7.6
Any idea how I could solve this? Is the a MPEG2 component update which works with QT 7.6?
Thanks for your help
Wolfgang

I downloaded the new MPEG2 component (unfortunately I had to pay the 20 EUR as my previous download has been in something liek 2008 and is no longer registered in the Apple Store
Strange! I made my original pre-QT v6.4 MPEG-2 component purchase in September of 2002 and it was automatically updated to the version for QT 6.4 thru QT v7.5 which was then automatically updated for QT v7.6 and later. It would seem the European stores may operate differently than the US store. You may wish to hang onto you purchase information in case this ever happens again in order to discuss the matter with Customer Service or at least learn the specific terms/limitations of your purchase agreement and/or account.
I hope this solves the problem but it seems most likely that the incompatibility of the old MPEG2 component and QT 7.6.x is the reason for my problem. You may be right
I opened up the installer package after reading your latest post and noticed a statement that QT 7.6 is "required" for this update. So it looks like there were some compatibility issues with the change to QT v7.6 software.
In any case, wish you the best of luck...

HT1443 Quick Time version to support mpe (MPEG2) on mac running 10.6 quick Time 10.0?

Running quick time 10.0 on OS 10.6.8 trying to run mpe. movie. Message, NOT compatable with this version of Quick Time.
Which version should I be running to view mpe. formated movies (MPEG2)?

http://store.apple.com/us/product/D2187Z/A/quicktime-mpeg-2-playback-component-f or-mac-os-x

Bought QuickTime MPEG2 component - "installed" but it's not there

I just bought the MGEG2 component and ran the installer - it said it was going on my hard drive, ran the progress bars, etc., and even gave a nice cheery "installaiton Successful" announcement with an attractive green check mark, Too bad it didn't do jack for QT's ability to open files.
When I look in my (hard drive)/Library/QuickTime/ directory, it's not there.
It should have a resource filenamed "QuickTime MPEG2.component" (everything there is for audio (AC3), Div6, Perian, Flip4Mac and the Save as AVI component from MPEG Streamclip.)
Antbody understand why it's not where it should be?
Reference info:
OS 10.6.7
QT Pro 7.6.6
MacBookPro (Intel 2 GHz)
component installer v. 7.6
(creation date Jan 14, 2009) <- too old?

1) What part of their MP4 doesn't my version of QuickTime understand? (It reads a lot of mpeg-4s, what does it need to know?)
You have two different facets here.
The first is MPEG-4/AVC (H.264) video multiplexed with AC3 audio wrapped in an M2TS, MPG, or MPEG file container. This has many problems. On the one hand the video is MPEG-4 and so the QT MPEG-2 Playback component cannot decode it but it is wrapped in an file container that is basically telling QT to use the QT MPEG-2 Playback component for video playback (i.e., much the same as why VLC considers the content MPEG-1/2 data because that is what both media players expect even though VLC can actually handle the audio and video data in this wrapper). On the other, QT is not natively compatible with AC3 audio and cannot play it natively even if it was able to "demux" the blocks of audio and video data properly and synchronize the two to a common external time reference which is the basis for QT media technology. (I.e., The wrapper being used is based on spatial synchronization of audio and video data interspersed in a single data stream rather than the temporal synchronization of up to 99 parallel data tracks normally used by QT—a basic difference in player technology akin to trying to play a BD disc in a CD player.) Normally, the way around this problem is to use iMovie '08, '09, or '11 to import your content. iMovie contains a special import/converter module to handle this content. Basically, it converts the AVCHD video to AIC (Apple Intermediate Codec), converts the AC3 audio to resampled linear PCM (AIFF) and applies timing offsets as may be needed to ensure synchronization between audio and video content. This data is then wrapped in the generic QT MOV file container making the files compatible with any/all QT based applications. Unfortunately, the special module cannot be used by files already imported to your hard drive at the "Finder" file level.
As to MP4 (SD MPEG-4, Chapter 2) content, these files may or may not be compatible with QT depending on how the audio is encoded, the file container actually used, and/or how your system is actually configured with QT components. In most cases, making the content compatible may be as easy as doing nothing, to changing the file extension or copying the data to a real MOV file container to using MPEG Streamclip to convert/handle the audio content.
2) Why does VLC show the file properties as MPEG-1/2?
Like QT, when VLC sees the wrapper file extension, it "assumes" the file contains a specific type (or range) of data types and reports accordingly. The main difference here, is that VLC can actually play the AVCHD data natively while QT cannot.
By the way the MPEG-2 description jived with a review - CNET, I think - which I'd read online. No doubt this will provoke another one of those explanations that always boil down to "you don't understand, the wrapper isn't telling you what's in the files" responses. Is there a tool for telling what the thing actually is?
Interpretations can sometimes be confusing. HDV content can also be described or reported as MPEG-1/2 content since it is sometimes described as DV100 encoded data wrapped in an MPEG-2 file container. As to what is actually in a file container and utilities to read them, there are a number of such available as free downloads. Unfortunately, many will have the same problem with MPEG/MPG containers if they bother to read them at all but do really well with other file containers. Since most of the content I deal with is MOV, MP4, and/or M4V, I tend to use the free VideSpec and/or Dumpster utilities. In my case I am more worried about MPEG-4 Profiles and Levels, entropy encoding modes, fourCC identifications, key frame frequency, key frame data rates, how the data is distributed between key frames, and the like when trouble shooting problems and most of my dealings with AVCHD are limited to the conversion of DVR/BD content to TV2 compatible content since I don't even own an AVCHD camcorder (and still prefer HDV for editing purposes).
The broader question remains - is QuickTime meant to be general purpose, at least as a player?
No, it isn't. As previously stated, QT technology is based on temporal synchronization of multiple parallel data tracks (up to 99) to a common reference clock and not spatial synchronization by interspersing of blocks of data within a single stream or the interleaving of data frames (which QT can handle because the data is only out of sync by one half-frame per n-1 tracks). This is great if you mask, layer, window, etc. content within a single player but severely limits QT compatibility with older and/or currently competing technologies. In short, pick your player/converter based on the technology used in the source file and not because you think QT should be an all purpose, one size fits all multimedia utility. If FLV Crunch meets your needs, then by all means use it.
I took some similar files I got from a recent model Canon to a video professional's (family) and they couldn't be read by a current version of FinalCut Pro.
Which model Canon? Which "current" version of FCP, the suite or the new FCP X release? Do you have a short snippet you can upload for examination? Have yet to research the pros and cons of the latest release but plan to do so next month if/when I have the time. (I.e., users seem to either really love it or really hate it.)
PC video straightforward, Mac a colossal hassle until you find the right 3rd party application: does that sound wrong to anybody else?
If you opt to use an import work flow that preserves the QT file incompatibilities instead of a work flow that ensures QT playback, conversion, and editing compatibilities, is it the fault of the software or the user?

HT1146 Camcorder compatibility

I have a MBA and would like to buy a camcorder. I need to be able to import the pix to edit on imovie11, but it appears there are a lot of issues with fireware/usb ports etc. Is there a reasonably anguish free product for £500 or less that someone can recommend that will definately work?
Thanks,
SM

The firewall in Mac OS X has absolutely no bearing on camcorder compatibility. The camcorder does not use the network.
With regard to mini-DVD camcorders, they record their video in MPEG2 format, which suffers two problems: 1.) it's a highly-compressed lossy format that's really poor for editing (the video they shoot is not intended to be edited, only played back as is); 2.) recompressing the MPEG2 to create a new movie makes things worse.
Since you're asking about the Canon ZR series, and they are MiniDV and not mini-DVD camcorders, that may not be important to you.
Canon models don't have any particular problems. It's true that they use what OS X calls the FireWire basic profile (IEEE-1394 raw video) rather than IEEE-1394 DV, but the problem there is only that the OS X FireWire driver drops frames (rare, but it happens) sometimes with the basic profile. You generally won't notice, but it can be annoying (you can run Linux on your Mac and it works just fine, it's not a hardware issue). Just make sure that if you use Final Cut you turn off the option to terminate if a frame is lost (and there's a bug in FC where a dropped frame causes it to lose VTR control of the camcorder).
That said I have a Canon ZR mini-DV camcorder (ZR500 -- standard definition), and it's a nice little camera. It's performance in low-light is not all that great, but in well-lit situations the video is quite good. Were I to buy a new camcorder, I'd go with a high-definition model that does 1080i, even if I were outputting to DVD because the sharpness of the video pops even there. However, though I am fond of the MiniDV cassettes as a backup medium, there's some huge advantages to SD and HD storage for camcorders (for example, no low-frequency hum from the DV tape mechanism), but AVCHD is really tough (takes a lot out of your computer) to work with.

AVCHD or mpeg2

Dear Adobe experts
I have a JVC HD-30 and can choose to record in either AVCHD to mpeg2. Do you have an opinion on which one to go for?
I am especially concerned about quality as I have read that AVCHD quality is not as good as mpeg2.
Are there any editing issues I should bear in mind? I assume PRE7 can handle either?
Thank you for your help.

I recommend MPEG2. Greater compatibility. AVCHD was supposed to be the next big thing, but the support and compatibility hasn't really materialized.
I have a Canon that only records to AVCHD and I regret my decision because the AVCHD files have been a pain.

Hardware MPEG2 Encoder

According to Apple and Google, there is NO Hardware MPEG2 encoder available for Apple's Quad G5. I am on the hunt for a solid MPEG2 encoder after countless Compressor letdowns both in performance and actually getting the program to work.
http://www.apple.com/finalcutstudio/dvdstudiopro/partners.html
Optibase, among others, have not yet adopted the PCI Express compatibility which has painted us in a corner to deal with the software encoding process that takes hours. Yes, HOURS. I'm not talking about 2-3 hours for a 20 minute video. I'm talking about 10, 15, 20 hours for Compressor to make the MPEG2 and AIF, and once it does, the quality is good, not great.
Please someone at Apple or one of these third party companies (Optibase, Wired) throw a pizza party for the engineering staff and let's get the ball rolling on a PCI Express techology that we can use before the PowerIntel MacPro G6 comes out.
(Or at least make Compressor utilize all four chips in the Quad)
Thanks,
Dan
Quad G5, 8GB RAM Mac OS X (10.4.5)

I use an SD-2000 on Windows. The Creator encoder is still part of a OS9 G4 system but they're not not updating it. They've (Sonic) flat out stopped developing Creator/Fusion. We also have a Wired Inc. board which I've not sorted out yet. The windows CCE SP (software) option is a very good app but hardware is hardware. Two or three copies, Procoder and some PCs still works out a lot cheaper than some hardware encoders though...
I'd say it's aways good to have options cause there are lots of times where the SD-2000 doesn't cut it and I encode with something else...
-Jake

I have formatted my SSD and hard drive.... I am running a clean install from disk of 8.1 pro. I cannot determine if it is a compatibility

issue or hardware issue. I had run a memory test and scan disk for bad sectors from the bios. As administrator, I enabled automount in diskpart to allow windows to assign a drive name.
From the bios, I can see both drives and only the ssd. I have not pinpointed when the harddisk is unmounted. It is formatted as NTFS. I can hear it unmount either during boot or upon waking from sleep mode. The bios sees no bad sectors nor does windows.
However, when I had the intel compatibility software installed, my hard drive never mounted. I did a restart and inorder for windows to see my hard drive. I disabled the intel software for the 4th gen i7 processor. This problem is happening less often. I do
not think I have solved the problem. Intel or Windows... I think a bit of both.
If there is a software patch, please guide me to it. I am in school and use my laptop ALL the time. I believe it is a compatibility issue. I have attached this from searching intel's site for downloads and windows is up to date.
I am quite concerned because I can hear my harddrive unmount. It is labeled as healthy NTFS partition. I have checked for hidden volumes and done everything I know to do to check the integrity of the hardware as administrator. I have searched microsofts
libraries and forums and have done everything I can find as suggestions.
I have checked for malware, viruses, etc. My only clue this is going to happen is the hard disk spins up and I hear the fan, then I hear it unmount the drive. Of course, after unmounted there are other issues which I have ruled out as the cause of the problem.
Basically, I am experiencing a lack of swap space after my hard drive unmounts.
Any suggestions, are welcome! I would really like to know if this is a known windows issue. I should not have to disable intel's processor software. I paid for the features of the i7 and would like to utilise the processor.

Hi,
According to your descriptioin, I don't think this is system problem, it should be Intel driver problem. It would be contact Intel to confirm this issue whether this is their driver problem.
Roger Lu
TechNet Community Support

Itunes wont open - compatibility error...

hi,
today I had a problem with moving songs from itunes to ipod. have had this issue in the past which was fixed by using ipod updater.
this didnt seem to work so for first time in ages ran the itunes updater. I can no longer open itunes and get the following error.
Quicktime unavailable
itunes requires Windows 2000 or later
Please make sure compatibility mode is disbaled in the compatibility tab of the properties of itunes.exe
well....I tried to do this (I am not massively IT literate!), have tried selecting or deselecting compatibility on this tab....and still wont open....any ideas?
im on windows XP professional.
cheers in advance
mike

hiya!
if I find the mp3 file on my hardrive and move it to ipod manually it still doesnt appear when I disconnect.
that's normal. for the ipod to recognise a song it needs to be transferred to the ipod via itunes rather than dragged and dropped with Windows Explorer. see the note at the end of this article:
iPod: Operating System or iTunes Reports the Disk is Full, But It Does Not Look Full
... try resetting the warnings on your ipod and trying another manual sync:
Resetting iPod warnings
do you get an error message show up after resetting warnings?
love, b

Is there a Data Execution Prevention compatable version of iTunes? I have reinstalled iTunes 10.5 at least 10 times, and after it installs, it will not open because of DEP.

I have tried all the advice I have seen on Apple Support discussion boards for the past 2 days, and nothing works. Disabling DEP is not possible, regardless of what the Windows Support discussions tell you. In the meantime, I have absolutely no access to iTunes, or even the ability to update my iPhone or iPod. The only feasable solution is the possibility of a version of iTunes that is compatable with Data Execution Prevention settings.
In the past 2 days, I have: Removed iTunes and related components from the Control Panel (numerous times) Per the instructions on Apple Service discussions pages, I did it in this order. 1. iTunes 2. QuickTime 3. Apple Software Update 4. Apple Mobile Device Support 5. Bonjour ^. Apple Application Support. After all that, I reinstalled iTunes.
Everything looks fine during installation, with no error messages. At the end, it says everything was successfully installed. However, when the installation tool closes, iTunes will only partially open a window, but will stay blank. Then I get the message that iTunes has stopped working and that Windows has shut it down. Then I get notified that DEP has caused iTunes to shut down.
Can someone please help? Or, is there a DEP compatible version of iTunes?
I would appreciate any help. Thanks!!

Polydorus,
Thank you for your kind reply. During the many times I uninstalled iTunes, and all the other Apple programs, I only used the Uninstall Programs in Windows Control Panel. To make a long story short, I found a solution that works for me, but it is still not a complete soluton.
Here is what I did:
I used Uninstall Program in the Windows Control Panel to uninstall everything IN THIS ORDER
1. iTunes
2. QuickTime
3. Apple Software Update
4. Apple Mobile Device Support
5. Bonjour
6. Apple Application Support
Then I went to C:\Program Files and looked for any iTunes or Apple program listed there and deleted it.
I have 64-bit, so I then went to C:\Program files (x86) and looked for any iTunes, QuickTime, Bonjour or any other file or folder that had Apple or any Apple program in the name and deleted it.
I went to C:\Windows|SysWOW64\Quicktime and C:\Windows\SysWOW64\QuicktimeVR and deleted them
Go back to START, and open the "C" drive. Open the USERS folder. Open the folder with your username. Open the AppData folder. Then double-click on the LOCAL folder to open it. If you see any files or folders there that show any Apple program or file, delete those files or folders. Then go to the REMOTE folder and do the same. If there are any other users on this computer, go to each individual user and do the same thing in each LOCAL and REMOTE folder. Restart your computer.
Go to http://www.apple.com/itunes/download/ This is the page where you will actually download iTunes. Scroll down the page to the section under "Windows Software" that says "64-bit editions of Windows Vista or Windows 7 require the iTunes 64-bit installer". Click on that line to get the installer. It will take you to another download window.
Scroll to the bottom of the page to the message that says "Download for iTunes 10.4.1 for Windows (64-bit) here: iTunes for Windows 64-bit." Click there to get the download.
This is not iTunes 10.5, so you will not have access to "The Cloud", but it is at least functional until Apple actually comes out with a version that will not activate the DEP message. There was no combination of uninstalling and reinstalling, with or without Quicktime, with 10.5 that did not cause problems with Data Execution Prevention problems that I found.
I also used Firefox for the downloading instead of Internet Explorer. It just seemed to function better that way.
I hope this is helpful to someone. It's just what worked for me.

Mpeg2 Compatibility

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