UT Video recorder
anyone developing a screen video recorder ?.
I think would be great to share experiences, improvements of UT etc... to the world
Difficult to do ?
Coincidentally, @Amolith just taught me this today:
- Connect device to computer with USB cable (make sure it's in developer mode: Settings --> About --> Developer Mode)
- Open terminal on computer
adb exec-out timeout 120 mirscreencast -m /run/mir_socket --stdout --cap-interval 2 -s 384 640 | tee ubuntu_touch.raw
- Then you can convert the raw file into an mp4:
ffmpeg -f rawvideo -pix_fmt rgba -s:v 384x640 -i ubuntu_touch.raw -filter:v "setpts=2*PTS" ubuntu_touch.mp4
yes, thank you, i already know this. But i'm looking for an app on UT without the need of a another computer
On your phone you can do this via terminal (I used ssh).
Open terminal app, change to Video folder, capture raw video to file.
eg. to use the command from post above:
$ cd ~/Videos $ mirscreencast -m /run/mir_socket --cap-interval 2 -s 384 640 -f screencast.rgba
Note: use Ctrl+C to cancel screencast recording, or just use the
timeoutto capture exact duration. Also it helps to see
mircast --helpto see the params meanings.
Then you need
ffmpegcommand. You can install it into libertine container. (mine default is
$ libertine-container-manager install-package -p ffmpeg
ffmpeginstalled you can use it inside
Videofolder (also inside
Picturesfolders) using libertine. So to encode saved
screencast.rgbato mp4 using params as in post above:
$ libertine-launch --id xenial ffmpeg -f rawvideo -pix_fmt rgba -s:v 384x640 -i screencast.rgba -filter:v "setpts=2*PTS" screencast.mp4
Note: we are still in the
Now you should see the
screencast.mp4. I can play it on my computer, but on the phone there is some error.
I tried to pipe the
ffmpegdirectly, but it didn't work maybe
libertine-launchdon't support stdin input.
$ # not working $ mirscreencast -m /run/mir_socket --cap-interval 2 -s 384 640 --stdout | libertine-launch --id xenial ffmpeg -i - -f rawvideo -pix_fmt rgba -s:v 384x640 -filter:v "setpts=2*PTS" newscreen.mp4
@bhdouglass ok thank you, i see it is another example with a connected PC.
Now, maybe recording directly to the device would be probably a performance killer .
Would this work to cast the desktop screen during convergence ?