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Contents
# frozen_string_literal: true
module Lolcommits
class CaptureWindowsVideo < Capturer
def capture
return unless capture_device_string
system_call "ffmpeg -v quiet -y -f dshow -i video=\"#{capture_device_string}\" -video_size 640x480 -t #{capture_duration} \"#{capture_path}\" > NUL"
end
private
def capture_device_string
capture_device || device_names.first
end
def ffpmeg_list_devices_cmd
'ffmpeg -list_devices true -f dshow -i dummy 2>&1'
end
# inspired by this code from @rdp http://tinyurl.com/y7t276bh
def device_names
@device_names ||= begin
names = []
cmd_output = ''
count = 0
while cmd_output.empty? || !cmd_output.split('DirectShow')[2]
cmd_output = system_call(ffpmeg_list_devices_cmd, true)
count += 1
raise 'failed to find a video capture device with ffmpeg -list_devices' if count == 5
sleep 0.1
end
cmd_output.gsub!("\r\n", "\n")
video = cmd_output.split('DirectShow')[1]
video.lines.map do |line|
names << Regexp.last_match(1) if line =~ /"(.+)"\n/
end
debug "found #{names.length} video devices: #{names.join(', ')}"
names
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems