El día Wednesday, January 13, 2016 a las 01:37:27PM +0000, Alan Pope escribió:
> On 13 January 2016 at 13:15, Matthias Apitz <[email protected]> wrote: > > El día Wednesday, January 13, 2016 a las 12:48:43PM +0000, Alan Pope > > escribió: > > > >> On 13 January 2016 at 11:57, Matthias Apitz <[email protected]> wrote: > >> > I described here: > >> > https://gurucubano.gitbooks.io/bq-aquaris-e-4-5-ubuntu-phone/content/en/chapter6.html > >> > how one can bring the MIR screen onto an X11 server with around 60 > >> > frames per second, which is good enough to produce for example a demo > >> > for a talk in a conference. > >> > > >> > >> This is interesting to me, thanks for documenting it. Have you tried > >> it recently though? I tried on my OnePlus One and the mirscreencast > >> call on the device just launches and stops until you remove the > >> --stdout parameter. On the PC side nothing ever appears on screen, no > >> mplayer. > > > > I tested it right now for some minutes with the rotating clock; it works > > exactly as described. See attached desktop picture. or here: > > http://www.unixarea.de/mircast.png > > > > Thanks for confirming. I must have done something stupid, it works here too > now. Nothing to thank for. I found a small issue after playing back the demo. The two command pipes are, on BQ: mirscreencast -m /run/mir_socket --stdout --cap-interval 1 -s 405 720 \ | gzip -c | nc $srcIP $port on the netbook: nc -l 12345 | gzip -dc |\ tee mutt.video |\ mplayer -demuxer rawvideo -rawvideo fps=60:w=405:h=720:format=rgba - As you can see the frames are recorded in a file 'mutt.video', uncompressed already. If you play this file back with: mplayer -demuxer rawvideo -rawvideo fps=60:w=405:h=720:format=rgba - < mutt.video It runs to fast, 10 times to fast. It contains 1073 frames from the test (and btw, it has 1 GByte of size); it plays fine with fps=6; this means that during the test the sending side (mirscreencast) gave only 6 frames per second, and not 60 as the parameter '--cap-interval 1' asked. And this is wrong again, because it seems that this changed now in Ubuntu. There is no man page installed in the BQ, but the help says: $ mirscreencast -h Usage: -h [ --help ] displays this message -n [ --number-of-frames ] arg number of frames to capture -d [ --display-id ] arg id of the display to capture -m [ --mir-socket-file ] arg mir server socket filename -f [ --file ] arg output filename (default is /tmp/mir_screencast_<w>x<h>.<rgba|bgra> -s [ --size ] arg screencast size [width height] -r [ --screen-region ] arg screen region to capture [left top width height] --stdout use stdout for output (--file is ignored) --query only queries the colorspace and output size used but does not start screencast --cap-interval arg adjusts the capture rate to <arg> display refresh intervals 1 -> capture at display rate 2 -> capture at half the display rate, etc.. Does this mean, that the MIR runs only with 6 fps? HOw one can play video with this? Some hints about this? matthias -- Matthias Apitz, ✉ [email protected], ⌂ http://www.unixarea.de/ ☎ +49-176-38902045 UNIX since V7 on PDP-11 | UNIX on mainframe since ESER 1055 (IBM /370) UNIX on x86 since SVR4.2 UnixWare 2.1.2 | FreeBSD since 2.2.5 -- Mailing list: https://launchpad.net/~ubuntu-phone Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-phone More help : https://help.launchpad.net/ListHelp
