How to specify windows coordinates to cvlc

[SvenVD]

omxplayer has the --win option that can be used like this:
--win "0 720 1920 1080"

rpisurv.net is heavily relying on this functionality, how can this be achieved with vlc or vlc python libraries?

Thanks

[jc-kynesim]

--mmal-vout-window fullscreen|<width>x<height>+<x>+<y> will set the fullscreen output window position

[popcornmix]

I've done a few tests with latest apt vlc and it seems to be working. Making a note here, so I can refer back to what was tested.
Running from console (without x):
This displays video in a smaller window with framebuffer console hidden:

cvlc --mmal-vout-window 1280x720+64+128 <file>

This displays video in a smaller window with framebuffer console visible:

cvlc --mmal-vout-transparent --mmal-vout-window 1280x720+64+128 <file>

This displays video in a smaller window with framebuffer console visible and video behind framebuffer console:

cvlc  --mmal-layer -200 --mmal-vout-transparent  --mmal-vout-window 1280x720+64+128 <file>

This flips the video left-to-right. It also flips the dest coordinate (I'm not sure that is expected behaviour)

cvlc  --mmal-vout-transform hflip --mmal-vout-transparent  --mmal-vout-window 1280x720+64+128 <file>

This rotates video clockwise by 90'. It also transforms the dest coordinate (I'm not sure that is expected behaviour)

cvlc  --mmal-vout-transform 90 --mmal-vout-transparent  --mmal-vout-window 1280x720+64+128 <file>

[jc-kynesim]

Transform affecting win coords is expected as the "normal" use of it is to deal with rotated screens. I think VLC has a way of forcing source transform (i.e. overriding landscape/portrait encoded in the source) but I've forgotten how to do it (N.B. it isn't the transform module!)

[popcornmix]

omxplayer transforms source video and then renders to given dest coordinates, so the behaviour is different (although it's straightforward to adapt).
Also vlc is preserving aspect ratio. e.g. this doesn't render to a square - is there a way of forcing that? omxplayer does output square video here.

cvlc  --mmal-vout-transparent  --mmal-vout-window 1280x1280+64+128 <file>

[jc-kynesim]

I suspect there may be a zoom option that does that - not sure

[jc-kynesim]

You can force the source display aspect ratio with "--aspect-ratio a:b" so "--aspect-ratio 1:1" will give you a square pici. There is no explicit option for zoom to fill window but if you dup the window size into the aspect ratio you will get what you want.

[SvenVD]

Thanks for the help, I just release Rpisurv 3 Using cvlc player at its core, replacing omxplayer completely

[popcornmix]

Cool. Okay to close @SvenVD ?

[SvenVD]

Yes

[KenT2]

A few additional hints discovered by trial and error:
Using --crop or --aspect-ratio allows the --mmal-vout-window to work correctly provided the aspect ratio of the processed source matches that of the window
Using --crop and --aspect-ratio in the same command does not work. Use only one.
If using libvlc or python-libvlc the --crop and --aspect-ratio command options are ignored. They can be set using MediaPlayer methods