把视频转成AVI格式，可以任选编码格式，帧率，大小，等参数。
输入格式:
AVI, WMV, MPG, MPEG, MP4, FLV, RM, 3GP, MOV, 3G2, MTV, ASF, DV, MP4, MVI, PSP, RM, SWF, VOB
输出格式:
AVI-Video
参数设置:
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