推荐回答（4个）
国产优秀视频格式 转换器winmpg video convert，
专业的转换软件，为视频格式文件转换提供终极解决方案，
它能够读取各种视频和音频文件，并且将他们快速转换为流行的媒体文件格式。
拥有非常漂亮友好的界面.
它几乎涵盖了所有流行的影音多媒体文件格式, 包括AVI, Mpg, RM, RMVB, 3GP, MP4, AMV, Mpeg, Mpeg1, Mpeg2, Mpeg4, VCD, SVCD, DVD, XVID, DivX, ASF, WMV, SWF, IPOD, PSP, GIF, MJPEG, QuickTime, MOV, FLV, MKV, DV以及所有的音频格式.
http://hi.baidu.com/ddeingdas1/blog/item/73e935f4463c3cce7931aaa7.html
狸窝，界面，在输出格式那可选择格式，在设置内可选择分辨率。试试看吧
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