ShowAlpha: Difference between revisions
No edit summary |
Y8 |
||
| Line 5: | Line 5: | ||
In v2.54 ShowAlpha now returns RGB, YUY2, or YV12 via the pixel_type argument. The latter two can be used to layer an RGB clip with alpha transparency data onto a YUV clip using the 3-argument form of Overlay, because when setting pixel_type to YUY2 or YV12 the luma range is [0,255]. | In v2.54 ShowAlpha now returns RGB, YUY2, or YV12 via the pixel_type argument. The latter two can be used to layer an RGB clip with alpha transparency data onto a YUV clip using the 3-argument form of Overlay, because when setting pixel_type to YUY2 or YV12 the luma range is [0,255]. | ||
In v2.56 ShowAlpha/Red/Green/Blue now returns RGB24, RGB32, YUY2, or YV12 via the pixel_type argument. For RGB32 output the selected channel is copied to all R, G and B channels, but not the Alpha channel which is left untouched. For YUV output the selected channel is copied to the Luma channel, the chroma channels are set to grey (0x80). | In v2.56 ShowAlpha/Red/Green/Blue now returns RGB24, RGB32, YUY2, or YV12 (and in v2.60 also Y8) via the pixel_type argument. For RGB32 output the selected channel is copied to all R, G and B channels, but not the Alpha channel which is left untouched. For YUV output the selected channel is copied to the Luma channel, the chroma channels are set to grey (0x80). | ||
'''Examples:''' | '''Examples:''' | ||
| Line 19: | Line 19: | ||
'''Changelog:''' | '''Changelog:''' | ||
{| border="1" | {| border="1" | ||
|- | |||
| v2.60 | |||
| Added pixel_type "Y8" | |||
|- | |- | ||
| v2.56 | | v2.56 | ||
| Added ShowBlue, ShowGreen and ShowRed. | | Added ShowBlue, ShowGreen and ShowRed. | ||
|} | |} | ||
[[Category:Internal filters]] | [[Category:Internal filters]] | ||
Revision as of 19:54, 13 August 2014
ShowAlpha(clip clip, string pixel_type)
ShowBlue(clip clip, string pixel_type)
ShowGreen(clip clip, string pixel_type)
ShowRed(clip clip, string pixel_type)
ShowAlpha shows the alpha channel of a RGB32 clip, available in v2.53. ShowBlue/ShowGreen/ShowRed shows the selected channel of a RGB clip, available in v2.56.
In v2.54 ShowAlpha now returns RGB, YUY2, or YV12 via the pixel_type argument. The latter two can be used to layer an RGB clip with alpha transparency data onto a YUV clip using the 3-argument form of Overlay, because when setting pixel_type to YUY2 or YV12 the luma range is [0,255].
In v2.56 ShowAlpha/Red/Green/Blue now returns RGB24, RGB32, YUY2, or YV12 (and in v2.60 also Y8) via the pixel_type argument. For RGB32 output the selected channel is copied to all R, G and B channels, but not the Alpha channel which is left untouched. For YUV output the selected channel is copied to the Luma channel, the chroma channels are set to grey (0x80).
Examples:
# shows alpha channel of clip AviSource("clip.avi") ShowAlpha()
# swaps red and blue channels:
AviSource("clip.avi")
MergeRGB(ShowBlue("YV12"), Last, ShowRed("YV12"))
Changelog:
| v2.60 | Added pixel_type "Y8" |
| v2.56 | Added ShowBlue, ShowGreen and ShowRed. |
