diff options
Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 194e151f8f..a587bce766 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -1485,11 +1485,19 @@ Overlay one video on top of another. It takes two inputs and one output, the first input is the "main" video on which the second input is overlayed. -It accepts the parameters: @var{x}:@var{y}. +This filter accepts the following parameters: + +@table @option + +@item x +The horizontal position of the left edge of the overlaid video on the main video. + +@item y +The vertical position of the top edge of the overlaid video on the main video. + +@end table -@var{x} is the x coordinate of the overlayed video on the main video, -@var{y} is the y coordinate. The parameters are expressions containing -the following parameters: +The parameters are expressions containing the following parameters: @table @option @item main_w, main_h @@ -1515,15 +1523,15 @@ Follow some examples: @example # draw the overlay at 10 pixels from the bottom right # corner of the main video. -overlay=main_w-overlay_w-10:main_h-overlay_h-10 +overlay=x=main_w-overlay_w-10:y=main_h-overlay_h-10 # insert a transparent PNG logo in the bottom left corner of the input -avconv -i input -i logo -filter_complex 'overlay=10:main_h-overlay_h-10' output +avconv -i input -i logo -filter_complex 'overlay=x=10:y=main_h-overlay_h-10' output # insert 2 different transparent PNG logos (second logo on bottom # right corner): avconv -i input -i logo1 -i logo2 -filter_complex -'overlay=10:H-h-10,overlay=W-w-10:H-h-10' output +'overlay=x=10:y=H-h-10,overlay=x=W-w-10:y=H-h-10' output # add a transparent color layer on top of the main video, # WxH specifies the size of the main input to the overlay filter |