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Uncompressed Render results in black bars / squashed picture

Posted: Sat, 9th Jan 2010, 3:57am

Post 1 of 6

alienux

Force: 1050 | Joined: 6th Jan 2010 | Posts: 299

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

This happened to me in the demo of EffectsLab Pro, and it is also happening in the full version now that I've purchased it.

I'm importing .avi video that I created in Sony Vegas. Once I've completed my work in EffectsLab, if I render using DirectShow and then choose "DV Video Encoder" for the compressor option, everything looks as it should.

However, if I change the compressor setting to "Uncompressed," I get black bars at the top and bottom (as if the video were 16x9, which it isn't) and the picture that should fill the playback area is squashed between the two black bars, making everyone in the video look short and pudgy.

The only thing that I can find in the settings that I though would cause this is the option to "assume project is widescreen," but I've checked that setting and it is off.

What do I need to do to get my 4x3 fullscreen video rendered with no compression and without the black bars and "squashing" that are being inserted?
Posted: Sat, 9th Jan 2010, 5:00am

Post 2 of 6

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

What project settings are you using when you start the project? It will be a matter of determining the specific settings your footage uses, and matching those settings when you create the project.
Posted: Sat, 9th Jan 2010, 5:33am

Post 3 of 6

alienux

Force: 1050 | Joined: 6th Jan 2010 | Posts: 299

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

I'm choosing "Select video clip" and just using the suggested settings that EffectsLab gives. They are:

Template: NTSC DV (720x480)
Width: 720
Height: 480
Framerate: 29.97
Aspect Ratio: D1/DV NTSC(0.9)
Scan Method: Interlace (Even)

I leave those settings, add my effects, and render. AVI with DV encoding works great, but uncompressed rendering gives the black bars at the top and bottom and the squashed image I described earlier.
Posted: Sun, 10th Jan 2010, 6:52pm

Post 4 of 6

alienux

Force: 1050 | Joined: 6th Jan 2010 | Posts: 299

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

So, any ideas on what is happening or how I can correct this? I assume that if my project settings were incorrect, I would get the black bars and picture squashing when I render using DV Video Encoder as the compression setting. But, since my renders look fine with DV Video Encoder as my compressor setting I would think that my project settings are ok and that "uncompressed" should work fine, just without compression, but that's not the case.

Here are some of the specs from my camera (a Sony DCR-TRV280 NTSC), if it helps:

# Digital8 ™ Format (500 lines of horizontal resolution)
# 1/6” CCD Imager, 460K Gross Pixel; 290K Effective Pixels
# 16:9 Wide Mode (which I'm not using right now)
Posted: Sun, 10th Jan 2010, 7:51pm

Post 5 of 6

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

Indeed, if the DV renders are coming out correct, that would seem to indicate that the project settings are ok. I've very little experience with .avi though, so I'm not really sure what would cause this sort of issue. Hopefully some other .avi users out there might have some suggestions?

I stick with .mov, as I find it much more reliable, and with far less confusion as to codecs and compatibility.
Posted: Tue, 12th Jan 2010, 10:41pm

Post 6 of 6

alienux

Force: 1050 | Joined: 6th Jan 2010 | Posts: 299

CompositeLab Pro User EffectsLab Pro User Windows User

Gold Member

Update on this:

I was playing the clips exported by EffectsLab in Windows Media Player just to see how they looked. I hadn't tried to import them into Vegas because I assumed there was a problem since the uncompressed clips looked off in Media Player. Fxhome support asked if I was viewing the files in WMP, and also how they looked in Vegas. Since I hadn't actually imported them in Vegas because I though the renders were messed up, I went ahead and tried and they look fine in Vegas.

I even took one of each render from EffectsLab (one DV encoded and one uncompressed of the same footage) and added them to my timeline in Vegas. They both looked exactly as they should in Vegas, and after doing a final render in Vegas with each clip running one after the other, the final result video clip showed both to look the same, other than the uncompressed section being slightly better quality.

So, it comes down to something in Windows Media player displaying the uncompressed clip incorrectly, but all is well if I ignore that and just import the clip into Vegas.