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April 18, 2020 13:31
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Lossless screencast for Gnome Shell (supports wayland and X)
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#!/usr/bin/env python3 | |
from dbus import SessionBus, Interface | |
from os import getcwd, path | |
from sys import argv | |
BUS_NAME = 'org.gnome.Shell.Screencast' | |
PATH_NAME = '/org/gnome/Shell/Screencast' | |
INTERFACE_NAME = BUS_NAME | |
PIPELINE='x264enc pass=qual quantizer=0 speed-preset=ultrafast ! queue ! matroskamux' | |
if path.isabs(argv[1]): | |
name = argv[1] | |
else: | |
name = path.join(getcwd(), argv[1]) | |
bus = SessionBus() | |
screen_cast = bus.get_object(BUS_NAME, PATH_NAME) | |
screen_cast = Interface(screen_cast, INTERFACE_NAME) | |
ret, name = screen_cast.Screencast(name, {'pipeline': PIPELINE}) | |
if not ret: | |
print('Error starting screencast.') | |
raise SystemExit(1) | |
try: | |
i = input() | |
except (EOFError, KeyboardInterrupt): | |
pass | |
finally: | |
screen_cast.StopScreencast() |
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It's configured for H.264 Matroska (.mkv) files. It can be configured with the PIPELINE variable, in line 9.