John Rofrano
3
COW Coins
Forum Replies Created
-
[Derek Charles] “I’m failing to see how exporting the same file with the same settings could degrade quality – since it’s indeed the same -“
Because it’s not the same depending on the codec used to compress it. If you were using a lossless codec (which you are not) you would get the identical output, but you are using a “lossy” codec. That means that the compression algorithm guess at some information and throws other information away. What that means is that over repeated renders, you will see the effects of an average, of an average, of an average, of the image. It’s like editing a JPG file over and over again. After a while, the compression artifacts will degrade the image.
I wouldn’t worry too much about losing quality with only one or two extra renders. If you are really worried about losing quality, you should render your files to CineForm AVI which is a near-lossless codec but many use Sony MXF with the HD422 1920×1080-60i 50 Mbps or similar template. This will keep the bit rate high enough that you shouldn’t have to worry about degradation over a couple of renders.
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com -
[Richard Milner] “This is not a sound card per se but a video/audio mixer input card. There are no outputs on the card.”
How many inputs does it have?
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com -
Does that card have ASIO drivers? If so, make sure they are installed and selected under Options | Preferences | Audio Device. Most good audio cards will have ASIO drivers. If not, you can use ASIO4ALL but you really should buy a card with ASIO drivers to control latency.
If the card doesn’t have ASIO drivers then it should be seen as just the Microsoft SoundMapper which is the default Windows audio driver. This is really not optimal for recording but it should still work.
In either case, you should be able to assign inputs to an audio track. Can you post a screen shot of what the inputs on the track look like?
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com -
[Maxime Labrèche] “The purpose of the rendering is for playback on mac and pc. The video is supposed to be played on a wide screen in a classroom.”
MPEG4 AVC/H.264 is the ubiquitous format for both PC and Mac which is the MainConcept AVC encoder or Sony AVC encoder.
[Maxime Labrèche] “It looks like I don’t have the render template you’re describing in my version of vegas (9). The only mainconcept AVC ones I can choose from are ipod 320 x 240 and 640 x 480.”
Yea, Vegas Pro 9 is 7 years old. That’s a long, long. time ago in video years. If you don’t have anything more modern, then the iPod 640 x 480 template is the closest to what you need. You might also want to look at the templates under Sony AVC. It might have a template that is similar.
[Maxime Labrèche] “That source file is a 2.68 GB .mov and I’d like to reduce it to something like 500 mb.”
Depending on what format the source is in, you may loose a lot of quality trying to make it 5x smaller.
[Maxime Labrèche] “Should I be able to do that in Vegas 9? Maybe I should switch to some other software? I’d need to be able to do some edits too.”
Maybe you just need to upgrade your Vegas Pro 9 to Vegas Pro 13 so that you can render to more modern formats. If you have a Mac, I would use that since the source is in Mac QuickTime MOV format to begin with.
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com -
Do a test to see how well Vegas Pro handles Lagarith on your computer first. You really only need to convert the files that don’t match the project properties.
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com -
[Rob Clapham] “Would you still recommend adding noise to the cleaned footage? “
I’m sorry, I’m not familiar with this dithering method so I really can’t comment. Banding is usually cause by low bit depth so increasing the bit depth should solve it.
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com -
[Jeff Randle] “When using SVP13 to convert 10-bit ProResHQ to MXF, will it maintain the 10-bit status of the file?”
No it will not. Sony MXF is 8-bit.
[Jeff Randle] “I use a BMCC and shoot in 10-bit ProRes and am looking into how to maintain that 10-bit status by converting the ProRes to Cineform, MXF, or whatever file type can be used natively in SVP13 so as to maintain that 10-bit status. (so, I hear that’s how to do it).”
CineForm AVI will maintain 10-bit for you.
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com -
-
[Rick Hughes] “Anybody have any experience over which format would be better as my input media?”
I would use Motion-JPEG which is used by lots of content houses to deliver high quality royalty free content. You can also use Lagarith. It will have large file sizes but it is 100% lossless.
I would avoid X264vfw like the plague. AVC/H.264 was never meant to be placed in an AVI container and while you can do it… it’s a hack at best and Vegas Pro will give you problems when you go to render. So your entire project will look like its working and then at the 11th hour when you need to render, all sorts of weird things will happen. Don’t do it.
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com -
[Russ Froze] “…making sure the effect is to the right of the composite rectangle”
Like this:
~jr
http://www.johnrofrano.com
http://www.vasstsoftware.com
