I try to open an AVI file.

1. The first software I tried is VLC media player. It reports some error about AVI index:

   This AVI file is broken. Seeking will not work correctly. Do you want to try to fix it? This might take a long time.

   I chose yes, and it began fixing AVI index and existed when the repair progress bar reaches 20% or so. Then the video started playing and stopped much earlier than when it is supposed to finish.

2. Next I tried to open it in Totem Movie Player, which also stopped earlier at the same place as in VLC player.
3. I tried to play it in GMplayer. Now the entire AVI file can be played from start to finish, but it is impossible to drag playing progress bar while it was possible in VLC player and Totem player.
4. I heard that Avidemux can fix AVI index error, but later discovered it failed to open the AVI file.

So I was wondering how I can fix the AVI index error, or at least drag the playing progress bar in GMplayer?

Thanks and regards!