IF FFMPEG PROCESS IS AT 0.0% CPU USAGE:

poll([{fd=4, events=POLLIN}], 1, 100)   = 0 (Timeout)
poll([{fd=4, events=POLLIN}], 1, 100)   = 0 (Timeout)
poll([{fd=4, events=POLLIN}], 1, 100)   = 0 (Timeout)
poll([{fd=4, events=POLLIN}], 1, 100)   = 0 (Timeout)
poll([{fd=4, events=POLLIN}], 1, 100)   = 0 (Timeout)
poll([{fd=4, events=POLLIN}], 1, 100)   = 0 (Timeout)
poll([{fd=4, events=POLLIN}], 1, 100)   = 0 (Timeout)

IF A FFMPEG PROCESS IS WORKING:

poll([{fd=5, events=POLLOUT}], 1, 100)  = 1 ([{fd=5, revents=POLLOUT}])
sendto(5, "1000\r\n", 6, 0, NULL, 0)    = 6
poll([{fd=5, events=POLLOUT}], 1, 100)  = 1 ([{fd=5, revents=POLLOUT}])
sendto(5, "fm\0\0\0\5\tz\247\226W\325\0003\30\327\237\7\271Ly\320\314\215Bi\212\317a;/\310"..., 4096, 0, NULL, 0) = 4096
poll([{fd=5, events=POLLOUT}], 1, 100)  = 1 ([{fd=5, revents=POLLOUT}])
sendto(5, "\r\n", 2, 0, NULL, 0)        = 2
poll([{fd=4, events=POLLIN}], 1, 100)   = 1 ([{fd=4, revents=POLLIN}])
recvfrom(4, "\t\0\3,\17\355\300\0\0\0\0'\1\0\0\0\0\0\3#A\232&\3\274\6\367A\256\201\207\23"..., 10019, 0, NULL, NULL) = 827
poll([{fd=4, events=POLLIN}], 1, 100)   = 1 ([{fd=4, revents=POLLIN}])
recvfrom(4, "\10\0\1\204\17\355\325\0\0\0\0\257\1!\32\204U\236&,\"\0\0\0\v\377\25\227\271iR\334"..., 9192, 0, NULL, NULL) = 1448
poll([{fd=5, events=POLLOUT}], 1, 100)  = 1 ([{fd=5, revents=POLLOUT}])
sendto(5, "1000\r\n", 6, 0, NULL, 0)    = 6
poll([{fd=5, events=POLLOUT}], 1, 100)  = 1 ([{fd=5, revents=POLLOUT}])
sendto(5, "fm\0\0\0\5\tz\247\226\253+\f\225\312\241\"\301U\32E\211\250\200z\377\303\335\345\304\374\v"..., 4096, 0, NULL, 0) = 4096
poll([{fd=5, events=POLLOUT}], 1, 100)  = 1 ([{fd=5, revents=POLLOUT}])
sendto(5, "\r\n", 2, 0, NULL, 0)        = 2
poll([{fd=4, events=POLLIN}], 1, 100)   = 1 ([{fd=4, revents=POLLIN}])