non-square pixel rendering
Moderator: Ken Berry
non-square pixel rendering
I dump from my HD recording and down convert through firewire into VS11. The project by default is in 16x9 aspect ratio. I keep this aspect ratio and edit the .mpg files to create project. When I want to export out to an .AVI file should I deselect 'non-square pixel rendering' check box to get the highest quality output in the 16x9 format?
You leave "Non-Square Pixel Rendering" = ON for the majority of all projects.
HDV, DV, Mpeg etc which are standard codecs.
In this case it should also be left on.
If you uncheck it the video will not be displayed correctly on a 4:3 TV, maybe not even a 16:9 HDTV, depends on the HDTV..
Some special codecs like cineform only use square pixels and use the avi container.
DV in the avi container is a set standard so this setting is always ON.
HDV, DV, Mpeg etc which are standard codecs.
In this case it should also be left on.
If you uncheck it the video will not be displayed correctly on a 4:3 TV, maybe not even a 16:9 HDTV, depends on the HDTV..
Some special codecs like cineform only use square pixels and use the avi container.
DV in the avi container is a set standard so this setting is always ON.
your non square
off another post you informed me on native HD footage:
Unless you have the Huffyuv or cineform codecs the only one I know to use is uncompressed which is hugh file sizes.
If or when you find a codec that is frame accurate to edit in I would convert the HDV that first before editing. Use a 1 minute test file, you may have to uncheck "Use non-square pixel rendering" when exporting and turn it back on when rendering back to HDV format.
I was confused a bit and had read up on aspect ratios thinking the native HD down converted were all square pixels and me going from .MPG to .AVI and then through Windows Media Encoder this was going to stilt the footage.
Unless you have the Huffyuv or cineform codecs the only one I know to use is uncompressed which is hugh file sizes.
If or when you find a codec that is frame accurate to edit in I would convert the HDV that first before editing. Use a 1 minute test file, you may have to uncheck "Use non-square pixel rendering" when exporting and turn it back on when rendering back to HDV format.
I was confused a bit and had read up on aspect ratios thinking the native HD down converted were all square pixels and me going from .MPG to .AVI and then through Windows Media Encoder this was going to stilt the footage.
-
sjj1805
- Posts: 14383
- Joined: Wed Jan 26, 2005 7:20 am
- System_Drive: C
- 32bit or 64bit: 32 Bit
- motherboard: Equium P200-178
- processor: Intel Pentium Dual-Core Processor T2080
- ram: 2 GB
- Video Card: Intel 945 Express
- sound_card: Intel GMA 950
- Hard_Drive_Capacity: 1160 GB
- Location: Birmingham UK
Non Square Pixel Rendering.
I admit that this used to confuse me for quite a while until eventually the penny dropped - so let me explain it in laymans language.
Think of a screen size - any screen size will do, for arguments sake we will say that our screen size is 100 x 100.
If we use Square pixels then we will have a perfect 100 x 100 square like a sheet of graph paper.
If we use non square pixels then these pixels could be oblong in shape.
Therefore the 100 x 100 will not be square.
To clarify that even further lets put some sizes to those pixels.
Let us say that our square pixels are 1" x 1" (OK a pixel isn't an inch - I am just trying to make things clear)
so we have a 100 x 100 square measuring 100" x 100"
In our non square pixel example each pixel is 1" high x 2" wide
so now our 100 x 100 grid is in fact 100" x 200" (Oblong)
Both examples contain a 100 x 100 grid but in the square one it is "Square" - the non-square one is "Oblong".
I admit that this used to confuse me for quite a while until eventually the penny dropped - so let me explain it in laymans language.
Think of a screen size - any screen size will do, for arguments sake we will say that our screen size is 100 x 100.
If we use Square pixels then we will have a perfect 100 x 100 square like a sheet of graph paper.
If we use non square pixels then these pixels could be oblong in shape.
Therefore the 100 x 100 will not be square.
To clarify that even further lets put some sizes to those pixels.
Let us say that our square pixels are 1" x 1" (OK a pixel isn't an inch - I am just trying to make things clear)
so we have a 100 x 100 square measuring 100" x 100"
In our non square pixel example each pixel is 1" high x 2" wide
so now our 100 x 100 grid is in fact 100" x 200" (Oblong)
Both examples contain a 100 x 100 grid but in the square one it is "Square" - the non-square one is "Oblong".