[buffer @ 0x80ac600] w:1280 h:536 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
[scale @ 0x80ab3c0] w:1280 h:536 fmt:yuv420p -> w:720 h:480 fmt:yuv420p flags:0x4
[pad @ 0x80bd9c0] [Eval @ 0xbff6046c] Undefined constant or missing '(' in 'sar'
    Last message repeated 1 times
Error when evaluating the expression 'ih*16/9/sar'
Error opening filters!