Video Rendering looks choppy, input from GP3BE

cuJB wrote on 5/16/2013, 12:18 PM

I'm just not happy with output rendering when editing footage from my GoPro 3 Black Edition.

I always shoot in 1080p60 mode, no protune.

I've tried several rendering formats, but mostly use these settings.
Main Concept MP4
Frame Size = HD 1920x180
Profile = Main
Frame Rate = 29.97
Allow source to adjust frame rate = checked
Field Order = None, Progressive
Pixel aspect ratio = 1.000
Number of reference frames =1
Use Deblocking Filter = checked
VBR, Two-Pass
Max = 28Mbps
Min = 24Mbps
Encode Mode = Render using OpenCL, if available
Enable Progressive Download = checked

I have an Intel core-i7-2600 @ 3.4GHz with 16GB of DDR
Also, NVIDIA GeForce GTX 650 display apapter


Any one have better results using different options? Or formats?

I'm just not happy with Movie Studio. Does the full Vegas have better results?

Thanks,
Jayson

Comments

musicvid10 wrote on 5/16/2013, 1:38 PM
Really sounds like a playback issue. You didn't say what player you are using.

Try cutting your bitrate in half. Does it play smoothly?
[EDIT]
cuJB wrote on 5/16/2013, 2:45 PM
How do I get it to render at 30fps? Sony only allows 29.97.

I play the videos Windows Media Player.
cuJB wrote on 5/16/2013, 3:16 PM
I've tried playback in QuickTime, Real Player and Windows Media Player. I think QT looked the best, but still not great.
musicvid10 wrote on 5/16/2013, 7:16 PM
1. Type 30 into the frame rate field.
2. Quicktime player for Windows is the worst possible choice.
Render at a sane bitrate, play in VLC and report back, thanks.
c3hammer wrote on 5/16/2013, 7:19 PM
30p nomenclature is actually 29.97 fps progressive. It is not actually 30 fps. 60p is actually 59.94fps. 24p is 23.976fps.

Your system is most likely fine and not the issue with playback.

Uncheck both the "allow source to adjust frame rate" and the "deblocking filter".

Most importantly is to DISABLE resample under the media properties when going from 60p input to 30p output. This will prevent MS from trying to blend two frames into one causing ghosting to appear in every frame. It effectively just throws out every other frame to get 30p.

Give that a try and I think you'll find those three things to solve your rough playback.

Cheers,
Pete

cuJB wrote on 5/17/2013, 3:47 PM
OK, I've tried those three things and I do see marginal improvement. Thank-you for the suggestions.

That said, I'm still not quite where I would like the video. I see so much GoPro video on the web and it all looks better than mine. And I'm not just talking about the color and contrast, but the sharpness and lack of flickering that I get, especially when doing slow motion.

But again, These tips did improve my video quality.

Is there a way to force Disable Resampling? I don't see that option in Preferences. The way I do it right now is edit every video in my timeline. And that's time consuming...

Last question, Would Vegas Pro improve my rendering quality?
cuJB wrote on 5/17/2013, 4:22 PM
I did more testing, this time using TWIXTOR for slow-motion and it greatly improved the video quality. It looked terrible before, but now it looks OK..

Thanks Again
musicvid10 wrote on 5/17/2013, 5:28 PM
OK, I see GoPro frame rates are NTSC, not "true" 30/60 as with some DSLRs and other hybrids. So 30p = 29.97.

You may want to adapt our Handbrake tutorial for web delivery of your GoPro video. Others are using it with very good success.

Disable Resampling is done event-by-event in Movie Studio. It can only be done via a script in Vegas Pro.

Vegas Pro has many advantages -- but better native rendering quality is not among them. Pro uses exactly the same codecs and rendering engine as Movie Studio.

Try this: