v4l2: frames are already packetized

modules/access/v4l2.c

@@ -2189,6 +2189,7 @@ static int OpenVideoDev( vlc_object_t *p_obj, demux_sys_t *p_sys, bool b_demux )
     es_fmt.video.i_width  = p_sys->i_width;
     es_fmt.video.i_height = p_sys->i_height;
     es_fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;
+    es_fmt.b_packetized = true;
 
     msg_Dbg( p_demux, "added new video es %4.4s %dx%d",
         (char*)&es_fmt.i_codec, es_fmt.video.i_width, es_fmt.video.i_height );