/path/to/google/chrome --use-fake-device-for-media-stream [--use-file-for-fake-audio-capture=/apth/to/audio --use-file-for-fake-video-capture=/path/to/video]
/path/to/google/chrome --use-fake-device-for-media-stream [--use-file-for-fake-audio-capture=/apth/to/audio --use-file-for-fake-video-capture=/path/to/video]