In which module the Scaling is happening?

[nataraajc]

Hi,

I would like to know, where the actual Scaling is implemented in VLC. When we select menu Video->Scale the scaling is happening, is that Hardware scaling?
Can I implement my own scaling algorithm instead of the actual VLC one?

Pls throw some light on this.

Thx
Natz

[Rémi Denis-Courmont]

Normally, scaling is done in the GPU. If that's not working, VLC will use libswscale instead.

[nataraajc]

Normally, scaling is done in the GPU. If that's not working, VLC will use libswscale instead.

Hi, Can you be more detailed? Which file I can look for this scaling and change that to my own Scaling algorithm?

[nataraajc]

Hi.. Pls advice me if anyone knows where the actual Scaling is happening...

[erwan10]

As said earlier, in modern PC, scaling occurs at the hardware level (GPU), not at the vlc level.

If you choose to deactivate this GPU extra capability (--vout parameter set for instance to gdi (Windows) or xcb_x11(Linux)), then vlc does use sofware scaling from the libswscale library. (see ffmpeg projects)

If you really want to force software scaling and use your own algorithm, modules/video_filter/swscale.c is probably the file you are interested in.

[nataraajc]

I have implemented the scaling in Video Filter. Its working fine. Thanks for the help