AddBorders
From Avisynth wiki
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| + | Up-to-date documentation: [https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/addborders.html https://avisynthplus.readthedocs.io] | ||
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Add black or colored borders, increasing frame size. This has several common uses: | Add black or colored borders, increasing frame size. This has several common uses: | ||
* Adjust the [[Aspect_ratios|aspect ratio]] (make a 4:3 clip into 16:9 without stretching) | * Adjust the [[Aspect_ratios|aspect ratio]] (make a 4:3 clip into 16:9 without stretching) | ||
Latest revision as of 04:33, 18 September 2022
AviSynth+
Up-to-date documentation: https://avisynthplus.readthedocs.io
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.
[edit] 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
[edit] 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.
