Shotcut PAL-SD: Source video resized and black borders added
Posted: Wed Oct 09, 2013 12:58 pm
[PROBLEM]
When opening a video with PAL resolution (720x576) in Shotcut, it is squished and some vertical lines are dropped by that resize.
This not only distorts the picture in an unpretty way, but also adds black borders on the left- and right-side of the image.
[SOLUTION]
Actually this is a workaround.
The reason for the resize seems to be that by default, the PAL SD width is stored Shotcut-internally as 768 pixels.
I've therefore created a custom video mode profile:
Settings > Video Mode > Custom > Add
Entered the following values:
That profile settings are located in a textfile in "~/.local/share/Meltytech/Shotcut/profiles".
Edit it with your favorite text editor. Its contents are like this:
Change that to "720", save the file and then re-load the profile in Shotcut.
Now, you 720x576 video should be displayed as-is
When opening a video with PAL resolution (720x576) in Shotcut, it is squished and some vertical lines are dropped by that resize.
This not only distorts the picture in an unpretty way, but also adds black borders on the left- and right-side of the image.
[SOLUTION]
Actually this is a workaround.
The reason for the resize seems to be that by default, the PAL SD width is stored Shotcut-internally as 768 pixels.
I've therefore created a custom video mode profile:
Settings > Video Mode > Custom > Add
Entered the following values:
Code: Select all
Name: My_PAL
Resolution: 720 x 576
Aspect ratio: 4:3
FPS: 25
Scan mode: interlaced
Colorspace: ITU-R BT.601Edit it with your favorite text editor. Its contents are like this:
You see the "sample_aspect_num" being "768"?width=720
height=576
sample_aspect_num=768
sample_aspect_den=720
display_aspect_num=4
display_aspect_den=3
progressive=0
colorspace=601
frame_rate_num=25000
frame_rate_den=1000
Change that to "720", save the file and then re-load the profile in Shotcut.
Now, you 720x576 video should be displayed as-is