[Ffmpeg-devel] wv1 can't fast-forward

[黃瑞玲]

Hi. I need some help from you, experts.
I did a decode/encode to make MPEG1 video abstract from MPEG1/2 videos. It works fine. 
But when I tried to do the same thing to make WMV video abstract. 
Video came out ok but I can't move the slider in the player, whenever I drag the slider, it moves right back.
Do someone know what property of video was used to fast-forward video?

Thanks !

Juiling

P.S. I set format to ASF and use CODEC_ID_MWV1. Did I do it wrong?