Encoding videos adds 10-20 black frames at the beginning of the video

[jacob28348]

I'm using virtualdub to encode AVC videos into VP8. When I encode anything, 10-20 black frames are added at the beginning of every video. The strange thing is, if I hit save again and overwrite the video, the black frames disappear. Does anyone know why this is happening?

[jacob28348]

Fixed the problem by using FFMpeg Input plugin