Resolution when using AC3>MP3......

[JayTray]

I have a question about when you encode using GKnot all in one. If you use AC3 to be encoded to MP3 (128kbs) as your audio source when creating your .avs, you lose bit rate which could be used in you video output(resolution size). Especially if the AC3 is 6 channels 256kbs. Do you need to encode the Audio seperately and then create the ".avs" after figuring out what resolution to use? Otherwise Gknot thinks you will be using AC3 (200mb) audio, when really you will be using an MP3 (100mb). Does this make sense, I am trying really hard to explain this.

It's not really an Issue, I just encode the audio seperately and then create the .avs file. I was just wondering if there was a way to bypass this. I guess with Gknot I am getting spoiled and I am trying to get away with less work. ;)

Thanks In advance!

[muab]

nope, as far as i know gknot takes the actual mp3 file size IF u check (something like) "recalculate if needed" (the last window where u clicke the "last button" to encode)

muaB

[JayTray]

Yeah, but this will not correct the resolution so you get .2 kilobits per frame. I knew that alrady.

[pia2001slo]

If you do audio separatly than you can load the final MP3 file
in SELECT option in Gknot where the audio A is (if you have one audio
track). But this option is only for purpose of calculating the
correct size of the FINAL output avi. Ofcourse the bitrate of
encoding is also decreasing if you put your size of Mp3 so the
final movie will be at desired size. You can put no audio so the
bitrate will be higher,but when you mux your Mp3 in Nandub you
will get much bigger size than you want.
Did i answer your question ?

Bye

Janko

[xzquala]

Gknot doesn't actually assume anything. you have to tell it everything.

if you want to use the ac3 track, you have to tell it that. if you want to use an mp3 track, you have to tell it that. you can go outside the program to create your mp3, and enter the value into the audio a box, if you have the time and patience, you will only get more accurate results. but don't forget to check the box for calculating udio overhead. that is very important for filesize accuracy.

nowhere will gknot assume a bitrate higher than the atual bitrate, unless you tell it to.

for example, you could temm gknot in the audio a box that you will be using a 160k/s mp3 track, then have gknot make the ac3 track for you. lame will definately give you an undersized file with this setting. so gknot will calculate the size of the mp3 with overhead for muxing and automatically adjust the bitrate of the movie for you, assuming you've let it.

but if instead you want the most accurate possible bits/pixel*frame value for deciding what resoution to use, you can seperately encode the audio, and load the file itself into gknots main window.

but you cannot get gknot to automatically change the resolution for you.

hope I didn't seem like I was patronizing you, just trying to help

[JayTray]

Thanks Everyone....

I know this.... But I just wanted to see how everyone else is doing it. I try to get as close to 700mb as possible without going over 702 mb (for 1cd rip of course). I think I will stick with encoding the audio seperately and then adding the audio into Gknot to get the resolution and bit rate. Then encode, I feel its worth it since it only takes about 1/2 hour with BeSweet GUI encoder. I have had no problems with this method. I just wanted to know if there was a better method for getting as accurate a file size without the extra step.

Thanks for all the feedback!

[Beave]

There is another possibility to overburn the cd. It works great in NERO and I have no probs until 712mb.

And if the movie is even bigger I cut some credits away...

[JayTray]

Doesn't over burning just continue to burn off of the CD cutting off part of the Index. Do your Cd's still seek okay? Meaning if you stop the player and then start from the beginning. Seeking to where you left off, does it take a long time. If you could try this for me I would appreciate it.

Also, I have Nero Version 5, 0, 3, 5 and the CD on the Fly radio button is Grayed out. I was gonna try and see if over burning has any effect on the index of the avi file but the option appeared to be unavailable. I'm sure I just have to change a setting somewhere.

Let me know about those over burned CD's.

[JayTray]

Okay got the disc-at-once option to be available. It needs to be changed from multi session disc. But now when I try to burn Nero says I need a CD with more space to burn. The file is only 708 MB.

I would clip the credits off but I downloaded the file and for some reason my hard drive or the program I was using deleted the file when it was 1 or 2 MB from finishing the download. So I used Norton Unerase to retrieve the .dat file the program erased. I then Changed the file extension to .avi. The file plays great untill the end of the credits where the download was cut off. I have tried using Virtual Dub and Nan Dub to Clip the end credits, but it ruins the file because part of the index is corrupted. So I must either find a program that will cut the end of the file off without rebuilding the index, or overburn. I don't know if it is possible to clip the end of the file without destroying the index.

Thanks for the help!