diff --git a/Cropping-ignored.md b/Cropping-ignored.md index 4693873..8147dfa 100644 --- a/Cropping-ignored.md +++ b/Cropping-ignored.md @@ -1,16 +1,16 @@ -# Cropping parameter are ignored, or cropping is done but with wrong dimensions +# Cropping parameters are ignored, or cropping is done but with wrong dimensions ## The problem -You merge a video track applying cropping parameters. When you play the file back the video is either unchanged (no cropping applied at all) or the dimensions are wrong. +You merge a video track applying cropping parameters. When you play the file back, the video is either unchanged (no cropping applied at all) or the dimensions are wrong. ## Reason This is a bug in your player. There's unfortunately no easy way around it. -In Matroska the cropping parameters are stored as four values (top, left, bottom, right) in the track headers. The video track itself is not modified. It's therefore a lossless process. +In Matroska, the cropping parameters are stored as four values (top, left, bottom, right) in the track headers. The video track itself is not modified. It's therefore a lossless process. -During playback it's the player's job to set up video filters properly so that the cropping parameters are honored. The [Matroska spec notes page](http://www.matroska.org/technical/specs/notes.html#Cropping) lists the process to use: +During playback, it's the player's job to set up video filters properly so that the cropping parameters are honored. The [Matroska spec notes page](http://www.matroska.org/technical/specs/notes.html#Cropping) lists the process to use: > PixelXXX (size of the coded image) -> PixelCropXXX (size of the image to keep) -> DisplayXXX (resized cropped image)