Bitrate calculator problem

[X-treme]

After using the bitrate calculator and applying the given value from the calculation (bitrate) to TMPGEnc, I noticed that the video itself was in excess of what I could store on a dvd-r.

What went wrong here?

When I use the project wizard, the bit rate was roughly 1500-2000 less in value, and would fit on a dvd-r. Now that I increasedthe value (thinking it was better) the final file size is enormous.

What's the point of using it if it's going to make the file huge and not useable?

Thanks for any help!

[teegee420]

Are you saying that you used the TMPGEnc internal calculator? Try plugging in the value received from the DVDRhelp Bitrate Calculator instead.

[j123vt_99]

i've experienced the same problems using the bitrate calc that is posted here... i will often increase the size i enter for the audio part (making it greater than actual) and decrease the bitrate that i am given to use by 100-200 and the resulting file is still too big

[Capmaster]

Try reducing the video bitrate by the same percentage the files exceed the DVD capacity, and reduce it juuuust a little more for insurance.

[X-treme]

**If it makes ANY difference, i'd like to point out that i'm trying to convert divx to dvd**
After opening Gspot, I find the audio value (which was 128kbits/s), and enter that information along with the length of the movie.

The bitrate calculator then spits out a # that is roughly 1500kbit/s LARGER than what is calculated from TMPGenc. I inputted the new value (6021kbits) in TMPGEnc and let it encode. After waiting numerous hours I was left with a video file of 4.13gig (that's not including audio). Once I author the video, and add the audio, the final product is in excess of 5gigs.

I'm not sure what went wrong?

I also just using my 'standard' way through project wizard, and rather than having the file size at 100%, I adjusted it to 85% (file size 3500mb) and let it encode. Keeping in mind that the video bitrate is now only 4654kbit/s.

I'm stumped.

[sacajaweeda]

The calculator on this site here works just fine for me. Type in the time, select audio bitrate and then enter the VBR data it gives you into your encoder. Presto. Perfect fit each and every time.

[thor300]

The audio bitrate to use when caculating is not the one from your AVI file, you use the audio bitrate you will use on the DVD, and im almost sure you dont want to use 128? Check your ENCODED audio bitrate, its way higher than 128.

[X-treme]

Thor, you were right, Thanks.

I just relized I was looking at the wrong audio. The encoded audio was 1510kbit/s That's quite a BIG difference from the normal audio bitrate.. lol.

Thanks for helping out guys!

[DereX888]

1510 Kbps audio?! It cant be MPEG audio, its LPCM most likely?
I dont know them wizards or creator helper or whatchamacallit you've used there, but if this software insist on using LPCM (because probably you have NTSC "project") then just force it to use standard MPEG-1 Layer II at 224kbps. Altough NTSC DVD-Video specify AC3 or LPCM audio and only PAL DVD-Video adds MPEG Audio to it - trust me, in 99% cases it still works. Go for MPEG audio in your 'project'

And don't follow audio bitrate of your avi files... It is 128kbps *MP3* format (most likely, but some may have WMA renamed to DivXAudio instead), while any normal standard-compliant video MPEG always uses *MP2* audio format (short for MPEG-1 Layer II).

[thor300]

If you want AC3 audio for maximum player compatibility then get besweet, its free. To encode to 2 channel ac3:
besweet.exe -core( -input "C:\Audiofile.Wav" -output "C:\Audio.AC3" ) -azid( -s stereo ) -shibatch( --rate 48000 ) -ac3enc( -b 192 )

Change the bitrate ( -b 192 ) to whatever you like to use, within the limits of the DVD standard, 384 is a "good" maximum for 2 channel i think.

[johns0]

Also try ffmpeggui,really easy to make ac3 with for sound.

[uniquo]

how do you use the videohelp bitrate calculator, to find the min and max bitrate for a avi file I want to back up into a 800mb vcd? I tried to use it but I can't tell which one is the min or max for the file. Please help!! I'm going to use these values in TOK. the rate is 29.97