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Clip Quality Variation.
When I render in Sony Vegas some of my clips look better than others. My goal is to get the video to look good on YouTube in 360p. I record at 29 fps in 1080p! I just want the clips to have the same quality throughout the video.
Render Settings: Main Concept AVC/AAC
Profile: Main
Frame Rate: 14.985 (Half NTSC)
Field Order: None
Pixel Aspect Ratio: 1.000
Number Of Reference Frames: 2 [x] use deblocking
Variable Bitrate: [x] Two-Pass
Maximum (bps): 50,000,000
Average (bps); 50,000,000Test Video: https://www.youtube.com/watch?v=b3ukpQuDR5Q&feature=player_embedded
As you can see the quality start to get lower towards the middle.
The scene at the football field just looks horrible. I just want the clips to have the same quality throughout the whole video. -
10 Replies
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You will have to be more specific.
Two problems that I see right off – First, one of your talents is wearing a checkerboard pattern shirt. In front of a chain-link-fence. Both will give the encoder fits (technically, Moire patterns), and since you’re using interlaced footage, these patterns are going to create a lot of interlaced artifacts.
Second, some of your talent are wearing RED shirts. While this is not normally a problem, red in a high-contrast encode will bleed some.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Thanks, Can you please name the more specific things that you need to know?
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Be specific as to what you are calling a “quality variation”. It all looks the same to me.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
The shots on the sports field with the red t-shirt look like they were taken in fairly low light and some cloud, so they’re not as crisp as most of the other footage, but a bit blurry and dull/flat. It’s probably similar for the shot on the fenced bridge.
If possible, you need to re-shoot that take under similar lighting conditions as the rest of the footage. Other than that, it looks good.
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But what if I can’t re-shoot it. Is there any other thing I can do in sony vegas to help?
I dont get why the field scene looks like that because if you pay attention the first field clip you see (the slow motion extra) is clear but after that it is all blurry. -
Are you’re talking about the girl in the field at :40 to :45 seconds into the video? It looks like the camera autofocus is the problem here.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Thats a young guy with dreads! The field scene at 23 seconds is clear. But the field scenes at 29 seconds and on are horrible looking. How did the quality change like that?
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[Junya Wright] “The field scene at 23 seconds is clear. But the field scenes at 29 seconds and on are horrible looking.”
The first shot has relatively little camera motion, so there’s not much motion blur. But look at the guy’s fingers – they are quite blurred.
The later shots of the same scene have lots of camera motion, and the motion blur is obvious. It’s the same with the single shot with the guy in white tee walking along a path.
The light was probably too low for the camera, and it’s also having trouble auto-focussing as Stephen pointed out. The sunlit shots are clear and sharp. Maybe you can drop these shots and use some of the other better takes instead if you have enough footage.
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As Matt said, you have a lot of motion in this video and encoders don’t handle motion well. It takes a few frames for the encoder to figure out what is important.
Most of us can’t afford the encoders that can. Like the Telestream Episode Engine, $4,000.
Is this one or two-pass encoding?
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
This is two pass vbr encoding..
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