ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:      0 size:117024
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: 0.790000
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: 0.370000
ret:-1         st: 0 flags:1  ts:-0.740000
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ret:-1         st:-1 flags:1  ts: 1.047503
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ret:-1         st:-1 flags:0  ts: 1.730004
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ret:-1         st:-1 flags:0  ts: 1.306672
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ret:-1         st: 0 flags:0  ts:-0.900000
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ret:-1         st:-1 flags:1  ts:-0.222493
ret:-1         st: 0 flags:0  ts: 2.670000
ret:-1         st: 0 flags:1  ts: 1.570000
ret:-1         st:-1 flags:0  ts: 0.460008
ret:-1         st:-1 flags:1  ts:-0.645825