audio_frame_rate = int(c.find('AudioStream').find('FrameRate').text)
names = { 1: 'mono', 2: 'stereo', 3: '3.0', 4: '4.0', 5: '4.1', 6: '5.1', 7: '6.1', 8: '7.1' }
audio_cmd = '-f lavfi -i anullsrc=channel_layout=%s:sample_rate=%d' % (names[audio_channels], audio_frame_rate)
audio_frame_rate = int(c.find('AudioStream').find('FrameRate').text)
names = { 1: 'mono', 2: 'stereo', 3: '3.0', 4: '4.0', 5: '4.1', 6: '5.1', 7: '6.1', 8: '7.1' }
audio_cmd = '-f lavfi -i anullsrc=channel_layout=%s:sample_rate=%d' % (names[audio_channels], audio_frame_rate)