AddBorders
From Avisynth wiki
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(→Syntax and Parameters: new parameter color_yuv) |
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<div style="max-width:54em" > | <div style="max-width:54em" > | ||
* Add ''letterbox'' (top and bottom) borders: | * Add ''letterbox'' (top and bottom) borders: | ||
| − | <div {{BoxWidthIndent| | + | <div {{BoxWidthIndent|42|2}} > |
## add dark blue borders, using [[Colors|hex color notation]] | ## add dark blue borders, using [[Colors|hex color notation]] | ||
AddBorders(0, 86, 0, 86, $00008B) | AddBorders(0, 86, 0, 86, $00008B) | ||
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## same as above, using [[Preset_colors|named preset color]] | ## same as above, using [[Preset_colors|named preset color]] | ||
AddBorders(0, 86, 0, 86, color_darkblue) | AddBorders(0, 86, 0, 86, color_darkblue) | ||
| + | |||
| + | ## full scale black border using color_yuv [[Colors|hex color notation]] | ||
| + | AddBorders(0, 86, 0, 86, color_yuv = $008080) | ||
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</div> | </div> | ||
Revision as of 13:22, 6 December 2019
Add black or colored borders, increasing frame size. This has several common uses:
- Adjust the aspect ratio (make a 4:3 clip into 16:9 without stretching)
- Splice a smaller resolution clip to a larger one without resizing
- Together with Crop, shift a clip horizontally or vertically – see below.
See also: Letterbox, which adds borders without changing frame size.
Syntax and Parameters
AddBorders( clip clip, int left, int top, int right, int bottom [, int color ] [, int color_yuv AVS+])
- int left, top, right, bottom = (required)
- int color = (black)
- Border color; specified as an RGB value. See this page for more information on specifying colors.
- For YUV clips, colors are converted from full-range (0–255) to tv-range (16–235).
- Border color; specified as an RGB value. See this page for more information on specifying colors.
- int color_yuv =
AVS+- Specifies the color of the border using YUV values. It requires setting pixel_type to one of the YUV formats; otherwise it doesn't do anything.
- Similar to color_yuv in BlankClip
Examples and Notes
- Add letterbox (top and bottom) borders:
## add dark blue borders, using hex color notation AddBorders(0, 86, 0, 86, $00008B) ## same as above, using named preset color AddBorders(0, 86, 0, 86, color_darkblue) ## full scale black border using color_yuv hex color notation AddBorders(0, 86, 0, 86, color_yuv = $008080)
- Be aware that many older lossy compression algorithms don't deal well with solid-color borders, unless the border happens to fall on a macroblock boundary (16 pixels for MPEG).
- Use AddBorders in combination with Crop to shift an image without changing the frame size:
# Shift an image 2 pixels to the right Crop(0, 0, Width-2, Height) AddBorders(2, 0, 0, 0)
- Note, shifting this way must be done in 1- or 2-pixel increments, depending on color format.
- You can shift in sub-pixel increments with Resize.
