Fast forward probs for some encodes

[raymondh]

I am using the latest Gknot (patched) and Divx 5.02 (not pro).

I am ripping my DVD's with AC3 sound and encoding with 1800 kBit/s and just muxing the AC3 file. I'm not cropping or anything else. All I'm doing is putting the movies on my hard drive for playback.

Some movies that I have done I can fast forward and rewind with no problems at all. Others will either lose sound completely or be very out of sync.

Nandub shows:

Movie 1 (will not ff or rewind)
248995 number of frames
884 number of key frames

Movie 2 (ff and rewinds perfect)
152137 number of frames
1108 number of key frames

Movie 3 (ff and rewinds perfect)
167699 number of frames
671 number of key frames

I have tried zoom player, ATI file player, and WMP9.

Can anyone help me with this problem?

Thank you!

Ray

[raymondh]

I just tried playing one of the problem movies in the old version of windows media player and it plays fine until I try moving the slider. I get the following error: The file format is invalid. (Error=8004022F)

A clue?

[manono]

Hi-

There's at least a chance that the interleave settings for the AC3 Audio could be the cause of your problem. Try experimenting with the settings suggested in the AC3 Q&A (http://forum.doom9.org/showthread.php?s=&threadid=18318) over in the Audio Forum.

[Acaila]

Let's assume that first video is PAL 25fps:
248995 frames @ 25fps = 9959 secs @ 1800Kb/s = 17927640000 bits total
17927640000 / 8 = 2240955000 bytes
2240955000 /1024 = 2188432 KB
2188432 /1024 = 2137 MB
2137 /1024 = 2,1 GB

Muxing in the AC3 stream will increase that with another 350MB or so leaving you with 2,4 GB, give or take. For NTSC 23,.. or 29,.. fps the final number will be slightly different, I just used PAL as an example, but over 2GB nonetheless.

An AVI greater than 2GB will lose sync once you seek, no matter which program you use to play it.

There's an easy solution though, just cut it up into pieces smaller than 2GB and it will play just fine.

[raymondh]

You are good!

Both files are well over 2 gigs. I split them with nandub and it works great!

Thank you, thank you, thank you,

Ray

[chilledinsanity]

An AVI greater than 2GB will lose sync once you seek, no matter which program you use to play it.

Not true, maybe at one time, but I'm making lots of movies well over 2 gigs and haven't had any problem seeking. It will lose sync for about 2-3 seconds while it's searching for the next keyframe, but then regain it and the movie plays fine. So far the biggest movie I've watched like this was a total of 4.3 gigs.