High Bit Rate and Audio Sync Problems

[christopheramos]

Hey folks,

I am frameserving TV episodes from Vdub through CEE SP2 (the newest from Cinema Craft). I finally (finally!!!) got the Vdub filter setting to where they do a good job. Problem is, I have to set the output bit rate pretty high and change the frame rate from PAL (25 FPS) to NTSC (29.97).

Now, the output video file looks great. But the audio is garbage. So I then demuxed the audio from the video and tried it again.

The output video (in NTSC format) has about 20 seconds of black, blank footage at the end. Remuxing the audio is now a problem because the the video and audio are way out of sync.

Probably a bitrate problem, but I have no idea how to fix it. Any ideas??????

Thanks!
Chris

[manono]

Hi-

Probably a bitrate problem, but I have no idea how to fix it. Any ideas??????

Probably a framerate problem. Why not keep the video the same framerate (25fps) and then run DGPulldown afterwards for 25->29.97. The audio won't have to be stretched doing it that way, although there's a chance you'll have to apply a delay when authoring.

Or alternatively, encode for 23.976fps (NOT 29.97fps), and run standard pulldown afterwards. The audio will have to be slowed if you do it that way. BeSweet has a 25000-23976 preset.

I have to set the output bit rate pretty high

That doesn't make a whole lot of sense to me. You can set the bitrate to whatever you want.

Also, don't let CCE touch your audio. Demux it and handle it separately and add it back in when authoring. Feed CCE an audioless video. And frameserving using AviSynth is better than frameserving via VDub

[christopheramos]

Hey,

Well, I don't know how to do anything with AVISynth. It's all Greek to me.

I set the bitrate high to get the best quality output. I don't guess I "have" to set it high, but as I want to convert these files to DVD for play on my standalone player, I wanted to shoot for the best quality.

I tried 23.976, and a large chunk of the bottom of the video was cut off. Missing altogther. So I just left that setting alone.

As for pulldown, I am not even remotely sure of how that works.

P.S.
I no longer feed audio into CCE. Like you suggested. I quit doing that days ago!

[manono]

I tried 23.976, and a large chunk of the bottom of the video was cut off.

One reason to learn AviSynth. Don't let CCE resize the video. Get your AviSynth script using FitCD, and turn off "For DVD" at the top of the main screen of CCE.

[christopheramos]

Okay, would you suggest turning of "For DVD" in CCE even if I don't end up using AVISynth? Is there an advantage to that? I just figured that since I was going to convert to MPEG-2 for making a DVD, that'd I'd leave that option ticked.

[manono]

Well, if what you feed CCE isn't DVD compliant, it's going to resize it for you, possibly in ways you might not like. If you just drop an AVI in it (very bad, by the way), you may not get a DVD with correct AR. Look, just open the AVI in FitCD and use the script it gives you to send to CCE. Here's FulciLives' guide:

https://forum.videohelp.com/viewtopic.php?p=1487285#1487285

[christopheramos]

Thanks manono, I will give it a shot. I am very gun shy about trying to use AviSynth because (1) I don't know much programing, and (2) I'm stupid. No, not really stupid. I kid. I've learned a great deal from this forum.

Thanks! I will give it a shot.

Regards,
Chris