ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:     -1 size:2534775
ret:-1         st:-1 flags:0  ts:-1.000000
ret:-1         st:-1 flags:1  ts: 1.894167
ret:-1         st: 0 flags:0  ts: 0.800000
ret:-1         st: 0 flags:1  ts:-0.320000
ret:-1         st:-1 flags:0  ts: 2.576668
ret:-1         st:-1 flags:1  ts: 1.470835
ret:-1         st: 0 flags:0  ts: 0.360000
ret:-1         st: 0 flags:1  ts:-0.760000
ret:-1         st:-1 flags:0  ts: 2.153336
ret:-1         st:-1 flags:1  ts: 1.047503
ret:-1         st: 0 flags:0  ts:-0.040000
ret:-1         st: 0 flags:1  ts: 2.840000
ret:-1         st:-1 flags:0  ts: 1.730004
ret:-1         st:-1 flags:1  ts: 0.624171
ret:-1         st: 0 flags:0  ts:-0.480000
ret:-1         st: 0 flags:1  ts: 2.400000
ret:-1         st:-1 flags:0  ts: 1.306672
ret:-1         st:-1 flags:1  ts: 0.200839
ret:-1         st: 0 flags:0  ts:-0.920000
ret:-1         st: 0 flags:1  ts: 2.000000
ret:-1         st:-1 flags:0  ts: 0.883340
ret:-1         st:-1 flags:1  ts:-0.222493
ret:-1         st: 0 flags:0  ts: 2.680000
ret:-1         st: 0 flags:1  ts: 1.560000
ret:-1         st:-1 flags:0  ts: 0.460008
ret:-1         st:-1 flags:1  ts:-0.645825