26
Jan

Learn how to use ffmpeg_php : ffmpeg_frame object

By admin|Computer, PHP

ffmpeg_frame
The ffmpeg_frame object provides methods to query individual frames from a movie.

ffmpeg_frame object methods

Method Description
$frame = new ffmpeg_frame(Resource gd_image) Create a frame object from a GD image.

NOTE: This function will not be available if GD is not enabled.
$frame->getWidth() Return the width of the frame.
$frame->getHeight() Return the height of the frame.
$frame->getPTS() alias $frame->getPresentationTimestamp() Return the presentation time stamp of the frame.
$frame->resize(Integer width, Integer height [, Integer crop_top [, Integer crop_bottom [, Integer crop_left [, Integer crop_right ]]]]) Resize and optionally crop the frame. (Cropping is built into ffmpeg resizing so I’m providing it here for completeness.)

  • width – New width of the frame (must be an even number).
  • height – New height of the frame (must be an even number).
  • croptop – Remove [croptop] rows of pixels from the top of the frame.
  • cropbottom – Remove [cropbottom] rows of pixels from the bottom of the frame.
  • cropleft – Remove [cropleft] rows of pixels from the left of the frame.
  • cropright – Remove [cropright] rows of pixels from the right of the frame.

NOTE: Cropping is always applied to the frame before it is resized. Crop values must be even numbers.

$frame->crop(Integer crop_top [, Integer crop_bottom [, Integer crop_left [, Integer crop_right ]]]) Crop the frame.

  • croptop – Remove [croptop] rows of pixels from the top of the frame.
  • cropbottom – Remove [cropbottom] rows of pixels from the bottom of the frame.
  • cropleft – Remove [cropleft] rows of pixels from the left of the frame.
  • cropright – Remove [cropright] rows of pixels from the right of the frame.

NOTE: Crop values must be even numbers.

$frame->toGDImage() Returns a truecolor GD image of the frame.

NOTE: This function will not be available if GD is not enabled.
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