538: interframe interval = 1/32.67 s avg=1/30.67 stddev=1/99.27
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539: interframe interval = 1/31.98 s avg=1/30.78 stddev=1/102.36
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-frame= 500 fps= 29 q=2.8 Lsize= 1013kB time=36.53 bitrate= 227.2kbits/s \r
527: interframe interval = 1/29.27 s avg=1/30.69 stddev=1/95.51
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