tests/filtergraphs/iamf_5_1_4


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[0:a]channelmap=0|1:stereo[FRONT];
[0:a]channelmap=4|5:stereo[SIDE];
[0:a]channelmap=2:mono[CENTER];
[0:a]channelmap=3:mono[LFE];
[0:a]channelmap=6|7:stereo[TOP_FRONT];
[0:a]channelmap=8|9:stereo[TOP_BACK];