-
Getting Lacing Rendering 720p – Any idea why??
I’m getting a lot of lacing in my rendered video and I’m not sure why. All the videos I use in my project have the following settings (data and bitrates vary slightly):
WxH: 1280×720
Data rate: 7374kbps
Total bitrate: 7438kbps
Frame Rate: 25/secondBefore rendering I check my project properties to make sure the following is set:
Template: HDV 720-30p (1280×720), 29.970 fps)
Field order: None (prog. scan)
Frame rate: 29.970 (NTSC)
Pixel format: 8-bit (I’ve set to 32-floating and get same lacing issue)
Full-resolution rendering quality: Best
Motion blur type: Gaussian
Deinterlace method: NoneAm I setting something wrong? Am I getting lacing because the project files are 25 fps and I’m rendering 30? Should I set the Deinterlace method to something other than none?
If you need any additional info in order to provide help, please let me know. I’d love to knock out this lacing issue any way possible.
Thanks!!!
-
9 Replies
-
[Jon Scippa] “Should I set the Deinterlace method to something other than none?”
Yes. You should keep it set to the default which is Blend Fields. Vegas will not use it unless it encounters interfaced video. You didn’t say if your source was interlaced or not. Apparently it must be because everything else is set to progressive.
Also you didn’t say what your render settings are.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Ah, sorry. The source videos are all .wmv taken from Blu-Rays. 720p, I think. I had to convert them from .mkv to .wmv since Vegas 8 won’t work with .mkv.
My render settings are Windows Media Video V9, 6 mbps HD 720-30p. Should I step it down to 5 mbps 720-25p instead? Would that cut down in the interlacing issues I’m seeing?
-
Do the source WMV files (that you converted from MKV) look fine when you play them back in media player? If not, then you need to convert them properly before using them in Vegas.
Unless you have a specific reason to render to 30fps, then stick with 25fps to match your source. If you render at a different frame rate, you’ll either get some ghosting/blending of frames (resampling enabled), or slight hiccups (resampling disabled) in the rendered video because Vegas has to make up extra frames.
If the source video files are interlaced (click on one in the Vegas explorer and check its stats at the bottom of the explorer window) then you need to specify an deinterlace method for rendering as John explained.
-
[Jon Scippa] “Ah, sorry. The source videos are all .wmv taken from Blu-Rays.”
So you are illegally ripping Blu-ray discs?
~jr
http://www.johnrofrano.com
http://www.vasst.com -
If they’re my Blu-Rays, it’s not illegal, is it? I’m making a montage of videos from some of my personal Blu-Ray discs.
-
[Jon Scippa] “If they’re my Blu-Rays, it’s not illegal, is it? I’m making a montage of videos from some of my personal Blu-Ray discs.”
Actually, if they are Blu-ray disc’s of movies that you purchased, it is still illegal for two reasons: It is illegal to break the copy protection, and when you purchased the disc, you purchased the right to watch the movie, but not the right to re-purpose or create derivative works which is what a montage would be.
If they are Blu-rays of your vacation videos that you created then it is total legal because you own the rights to the content.
So… let’s continue…
[Jon Scippa] “The source videos are all .wmv taken from Blu-Rays. 720p, I think. I had to convert them from .mkv to .wmv since Vegas 8 won’t work with .mkv.”
How did Blu-rays that you purchased become .mkv files and then .wmv files? If you own them, and are really ripping them, then why don’t you simply rip them to the proper format in the first place?
[Jon Scippa] “My render settings are Windows Media Video V9, 6 mbps HD 720-30p.”
…and I have to ask… why are you converting .wmv files to .wmv files? None of this makes any sense.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
“…and I have to ask… why are you converting .wmv files to .wmv files? None of this makes any sense.”
This isn’t that difficult. I have a collection of videos recorded by my family and me that were on Blu-Ray. I copied them all to my hard drive in mkv BEFORE I knew that Vegas couldn’t edit mkv. Since I don’t have all of the Blurays still at home, I just converted them to .wmv so I could EDIT them in Vegas to create a montage video.
-
[Jon Scippa] ” I copied them all to my hard drive in mkv BEFORE I knew that Vegas couldn’t edit mkv.”
Unfortunately that may have been where the damage was done. If you made these Blu-ray’s yourself, and you know that they are 720p, and you are seeing interlace artifacts (that shouldn’t be there) then it’s possible that the conversion to mkv has introduced the interlacing.
[Jon Scippa] ” Since I don’t have all of the Blurays still at home, I just converted them to .wmv so I could EDIT them in Vegas to create a montage video.”
WMV is a highly compressed delivery format and is horrible to edit. You don’t want to edit WMV in Vegas (or any other NLE except maybe Windows Movie Maker). You want to produce AVI files for editing in Vegas.
Something in your many conversions has introduced interlacing. You need to figure out what it was. Check the mkv files and work your way forward from there. You may have to go find the original Blu-ray discs to fix this.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
That’s what I feared. Looks like I’ll have to start from scratch and get all the blu-rays together again. I thought I could avoid that but it’s better to take the time and get it right. Luckily, each blu-ray is only about 20 minutes long so it could be worse.
Reply to this Discussion! Login or Sign Up