Image ghosting effect?

hanselthecaretaker wrote on 7/24/2011, 6:03 PM
Hi,

I have Vegas Movie Studio HD Platinum 10 and use it to edit PS3 game footage. I both record and edit the footage in native MPEG-4 AVC/H.264 (.M2TS) format, but notice the end result is never as "crisp" as the raw footage. I'm wondering if there is something that can be done about this.

For example, the first image is a raw footage screencap-

http://img853.imageshack.us/img853/2149/vlcsnap2011072420h38m02.jpg

and this is after editing-

http://img535.imageshack.us/img535/5614/vlcsnap2011072420h37m31.jpg

It's mostly noticeable when pausing playback, but sometimes it just looks almost nauseating in motion too.

Is there a specific reason this is happening? It happens for every game edited. Same thing with another video editor I used, Cyberlink Powerdirector 8, but the effect was even more pronounced there. The funny thing is that raw video footage is described as 60fps when in reality it's only 30fps (speed of game). Odd seeing as how the frame counter in video preview verifies it as 30fps.

My PC specs are:

Q6700
ATI 1GB HD 6870
4GB DDR2 800
Windows 7 Ultimate 64 bit.

Capture device is Hauppauge HDPVR 1212, using ArcSoft Total Media Extreme software. It automatically detects what native settings are at by choosing the Playstation 3 recording option.

Here are examples of raw footage screencaps using its software

http://img51.imageshack.us/img51/390/unled1aoo.jpg
http://img4.imageshack.us/img4/1092/unled3oh.jpg
http://img705.imageshack.us/img705/4904/unled10ue.jpg

Thank you for any help correcting this issue.

Comments

Steve Grisetti wrote on 7/24/2011, 6:42 PM
Software that records video of your computer's desktop often uses unusual codecs that don't play well with video editing software. Even if it appears to use a standard format, like MP4. You will nearly always see some degradation of the image.

But a lot depends on how your Vegas project is set up. Have you got your project set up for 1280x720 AVCHD video at 60p?

If so, ensure that the area you're recording is only 1280x720 pixels. (Computer desktops can be larger than this.) If you're recording your whole desktop and then putting in a video project that's set up for 1280x720 pixels -- or, worse, 720x480 -- you will definitely see a reduction in quality and resolution in your final product!
Tim L wrote on 7/24/2011, 7:53 PM
Steve -- he is actually recording footage from a PS3 -- PlayStation 3 console -- using a Hauppage box to convert video signals (via the component leads) to AVCHD.

http://www.amazon.com/Hauppauge-1212-Definition-Personal-Recorder/dp/B0018LX0DY

Hansel -- I have no experience with a PS3, but the 1280x720 vidcap images you posted indicate your PS3 is set up for "720p" mode. 720p is indeed 60 frames per second, not 30. The "blurred" image you posted is actually two separate frames blended together. I'm guessing you have a 30p or 60i project set up in VMS (i.e. 29.997). In essence, in every 1/30th of a second frame of video in your project timeline you have two 1/60th of a second images from your source file.

If VMS allows it, set your project properties to "HD 720-60p" (or 720-50p if you are outside the US). It looks like this 60p capability may have been added in VMS 11 and might not be available in VMS 10.

If you don't have 60p available, then on your timeline, try right-clicking on your clip, select Switches, then select "Disable Resample" and see if this helps. I think this will use only every other frame of your captured video instead of combining two 60p frames into every 30p frame on the timeline.

(Note: VMS doesn't automatically match your project's frame rate to your source video frame rate. For example, you could set up a 24p VMS project and bring 60p video files into it. By default, VMS will combine multiple frames from a "faster" source file to create a single frame in a "slower" project file.)

You could also try setting your project properties so that "De-interlace Method" is set to "Interpolate Fields".

I'm just guessing at these things since I don't have any direct experience. Please let us know what works or doesn't work.

musicvid10 wrote on 7/24/2011, 8:39 PM
Right-click on your video events, choose Switches, then Disable Resample.
That should take care of a lot of what you are seeing.
hanselthecaretaker wrote on 7/25/2011, 3:29 PM
Thanks for the detailed response! I'm trying the disable resample option now. I guess I didn't fully understand that video capture framerate is independent of game render framerate. I didn't see an option for 720p-60 frames even in advanced render options. There is Blu-ray 1080 60i but I don't want to upsample because that would lower fidelity as well. I suppose if these solutions don't help I could upgrade to VMS11 if it indeed has 720p-60 capability.
Eugenia wrote on 7/25/2011, 3:42 PM
You don't need to upgrade to get frame rate support. You simply edit the frame rate fields on both project properties and exporting dialogs to match the exact frame rate of the original footage. You don't have to use ready-made templates for it. As long as the frame rate matches the original footage in all steps of post processing, you won't get ghosting. In that case, you will only get ghosting if you slow-motion your footage, and that's easily gone by disabling resample.
hanselthecaretaker wrote on 7/26/2011, 4:47 PM
Well disabling resample works much better for clarity, but in some cases the footage is half as smooth; obviously because of the missing frame, mainly noticeable when the game engine itself is rendering at 60fps vs 30.

Eugenia, I tried saving a custom option for a 59.940fps export to match the original footage/project settings, but it still saves under the default 1280x720p - 30fps heading. We'll see if it works.

Export dialogues is simply the "make a movie' tab render options, correct?

*edit* Video rendered much smoother so it appears the custom setting worked! No noticeable loss in quality either, which is a bit surprising considering the file size doesn't appear to be any larger than if it were a 30fps render. But I confirmed it did render 60fps by dividing total frames by the total time. And like I said the playback is undoubtedly smoother. Definitely a relief it has the ability to do this as it saves me the frustration and money.

Thanks for the help!
Chienworks wrote on 7/26/2011, 6:59 PM
Never use the Make Movie button. It's way too limiting. Always use Advanced Render, which opens up a whole host of options ... such as choosing the frame rate when rendering.