Re: [Linphone-developers] HD Video

[Jonathan Rosser]

On 10/26/10 19:06, Doug Blewett wrote:
> How much work would it be to add HD video to Linphone?

This works for me on Linux:

diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index 7befb64..cce1c17 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -3273,6 +3273,7 @@ unsigned long 
linphone_core_get_native_video_window_id(const LinphoneCore *lc){
 }

 static MSVideoSizeDef supported_resolutions[]={
+       {       {MS_VIDEO_SIZE_1080P_W,MS_VIDEO_SIZE_1080P_H}   ,       
"hd1080"},
        {       {MS_VIDEO_SIZE_SVGA_W,MS_VIDEO_SIZE_SVGA_H}     ,       
"svga"  },
        {       {MS_VIDEO_SIZE_4CIF_W,MS_VIDEO_SIZE_4CIF_H}     ,       
"4cif"  },
        {       {MS_VIDEO_SIZE_VGA_W,MS_VIDEO_SIZE_VGA_H}       ,       
"vga"   },


Obviously you need to pay attention to the codec and actually getting a 
v4l2 source to deliver HD video in the right format, but I have 
HDMI+HDSDI capture driving linphone fine. I'm using x264 as the codec 
with the "zerolatency" preset and the picture quality at 10Mbits/sec is 
fine on a 46" screen.

For me, it feels like this kind of image size stresses the internals of 
mediastreamer2 quite significantly - looks like there may be room for 
some optimisation.

Regards,
Jonathan.