ks-crop - Crop or change aspect ratio of a video.

Syntax:

$ ks-crop -16:9-crop <video-file>   --> Crop from 4:3/IMAX to 16:9 (1.77:1)
$ ks-crop -4:3-crop <video-file>    --> Crop from 16:9 to 4:3 (1.33:1)
$ ks-crop -5:4-crop <video-file>    --> Crop from 16:9 to 5:4 (1.25:1)
$ ks-crop -imax-crop <video-file>   --> Crop from 16:9 to IMAX (1.43:1)

$ ks-crop -16:9-aspect <video-file> --> Change aspect to 16:9 (stretched)
$ ks-crop -4:3-aspect <video-file>  --> Change aspect to 4:3 (stretched)
$ ks-crop -5:4-aspect <video-file>  --> Change aspect to 5:4 (stretched)

Default configuration:

The script ks-crop use by default the following configuration:

- Video codec: libx264
- Bitrate video: 5000k
- Preset: medium
- Audio codec: copy
- Default Audio: spa
- Container: mkv

If you want to change the settings, you need to edit the ks-crop file and change the following variables:

v_preset="medium"
vcodec="libx264"
b_vcodec="5000k"
acodec="copy"
v_ext="mkv"
default_lang_audio="spa"

Examples (Crop):

Crop from 4:3/IMAX to 16:9 (1.77:1):

$ ks-crop -16:9-crop /data/movies/Example.mkv

Crop from 16:9 to 4:3 (1.33:1):

$ ks-crop -4:3-crop /data/movies/Example.mkv

Crop from 16:9 to 5:4 (1.25:1):

$ ks-crop -5:4-crop /data/movies/Example.mkv

Crop from 16:9 to IMAX (1.43:1):

$ ks-crop -imax-crop /data/movies/Example.mkv

Note: Output file name will be Example-crop.mkv.

Examples (Change aspect):

Change aspect to 16:9 (stretched):

$ ks-crop -16:9-aspect /data/movies/Example.mkv

Change aspect to 4:3 (stretched):

$ ks-crop -4:3-aspect /data/movies/Example.mkv

Change aspect to 5:4 (stretched):

$ ks-crop -5:4-aspect /data/movies/Example.mkv

Note: Output file name will be Example-aspect.mkv

Execution:

After executing one of the mentioned commands, a wizard will be displayed to choose the video/audio tracks and define some parameters:

* Information of Example.mkv:

+ Video Tracks:
Stream #0:0(eng): Video: h264 (High)

+ Audio Tracks:
Stream #0:1(spa): Audio: dts (DTS)
Stream #0:2(spa): Audio: ac3
Stream #0:3(eng): Audio: ac3

* (Default: 0:0) Type the number of video track: 
* (Default: 0:1) Type the number of audio track: 
* (Default: 5000k) Type the bitrate (libx264): 
* (Default: n) Do you want apply '-max_muxing_queue_size 9999' patch? (y/n): n

* COMMAND THAT WILL BE EXECUTED:

  # Crop 'Example.mkv' from 16:9 to 4:3 (1.33:1)
  ffmpeg -i Example.mkv -vsync 1 -async 1 -map 0:0 -map 0:1 
  -filter:v "crop=ih/3*4:ih" -s 1920x1440 -c:v libx264 -profile:v high 
  -b:v 5000k -preset medium -c:a copy Example-crop.mkv

* (Default: y) Do you want run the conversion? (y/n): n

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