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Beak
18th September 2009, 03:20
Hello.

I am backing up bluray discs with Megui. I am burning to DVD+R DL

I am creating raw h264 video and multiplexing with ac3 at 640.

The problem is I can't seem to hit my file sizes accurately as the multiplexing adds alot of data and I was overshooting.

I use the bitrate calculator to determine the size. I have been using 7500MB as the selected size which is then reduced to 7.32GB automatically.I use this now because it never overshoots, or at least not yet.

I then subtract 640 from the calculated bitrate to make room for the audio. This works, but many discs have a couple hundred megs left that I would like to make use of.

What is the correct method?

Thanks for any help...
Atak_Snajpera
18th September 2009, 09:37
Did you try ripbot264?
Beak
18th September 2009, 12:54
Yes I did. I set it to 7950 for a backup of The Godfather.

It also missed by about 200 megs. I had to cut the credits and re-encode the audio to make it fit.

The average encode was 24 hours as opposed to 12 for megui, and time is an issue for me.
twazerty
18th September 2009, 16:28
Yes I did. I set it to 7950 for a backup of The Godfather.

It also missed by about 200 megs. I had to cut the credits and re-encode the audio to make it fit.

The average encode was 24 hours as opposed to 12 for megui, and time is an issue for me.

AVCHDCoder has a very accurate bitrate calculator to calculate the bitrate for AVCHD. I suggest you use AVCHDCoder for Blu-ray backups.

If you want to use different applications you can use AVCHDCalculator to calculate the bitrate.
Beak
19th September 2009, 01:56
AVCHDCoder has a very accurate bitrate calculator to calculate the bitrate for AVCHD. I suggest you use AVCHDCoder for Blu-ray backups.

If you want to use different applications you can use AVCHDCalculator to calculate the bitrate.

Thanks very much. trying it out right now.:thanks:

Works perfectly everytime. Thanks ++