Diko Matrix Creator 1.2

[NathanX]

My teacher in school (long long ago.. ;-)) always told me that there are no silly questions, just silly answers.

I use this bitrate calculator:
http://rapidshare.de/files/24714090/CalcuMatic.exe.html

[das Ich]

@Psycho

Thanks for your efforts! 

@NathanX

Thank you again, matrices guru. 

This tool is perfect for our purposes.

[Psycho Reptile]

@ das Ich

Glad you found it useful, thanks for the support

[NathanX]

Just if someone is interested, i did some encodes this weekend. As i like (B)SVCDs, I do a lot of 1 BVCD encodes as long as the bitrate does not go below 950 Kbit. For that I use Diko with CCE 2.70 and BVCD matrix. If I have to go for 2 SVCDs, I use Diko, CCE 2.70 and MPEG Standard matrix. For ultralow bitrate encodes (1000 Kbit) and below, I use Diko, QUenc 0.70 and QLB Matrix.

[XBrazucaX]

Great work Psycho!!!

Plz tell me, if I want to make a BDVD with 10 hours of duration, wich recommended matrix for me?
And this calc is correct?
Duration 2h ~ 8000kbps
Duration 4h ~ 4000kbps
Duration 8h ~ 2000kbps
Duration 10h ~ 1600kbps

If YES, maybe you can use some names of easy agreement to all, like: 4h DVD5, 8h DVD5, 20h DVD9, etc... and 1h CD, 1h30 CD, 2h CD, etc...

I'M REALLY INTERESTED :-D


Ps: Forgive my engilsh hehe

[Psycho Reptile]

Great work Psycho!!!

Thanks XBrazucaX, I will impliment a wizard (a few check boxes) that will recommend matrices (using NathanX's suggestions) - this should help noobs .

Or I'm thinking on integrating a bitrate calculator (based on the one at www.videohelp.com/calc) which will allow you to add a movie (or a few movies) and calculate the destination bitrate and suggest a matrix for DVD and (S)VCD, what do you think?

Regards your question, you have not included your audio bitrate, assuming one track at 128kbps:

www.videohelp.com/calc gives you:

Duration 2h ~ 4952kbps
Duration 4h ~ 2410kbps
Duration 8h ~ 1139kbps
Duration 10h ~ 885kbps

The calculator that NathanX posted gives you:

Duration 2h ~ 4973kbps
Duration 4h ~ 2422kbps
Duration 8h ~ 1147kbps
Duration 10h ~ 892kbps

Personally I use the bitrate calculator at vcdhelp

[vmesquita]

Thanks XBrazucaX, I will impliment a wizard (a few check boxes) that will recommend matrices (using NathanX's suggestions) - this should help noobs .

This would be really cool.

[das Ich]

Or I'm thinking on integrating a bitrate calculator (based on the one at www.videohelp.com/calc) which will allow you to add a movie (or a few movies) and calculate the destination bitrate and suggest a matrix for DVD and (S)VCD, what do you think?

It would be terrific. 

[NathanX]

@Psycho
Great suggestion as long as I can not held responsible for bad encodes due to the usage of the wrong matrix ;-)

Regarding the calculator: good idea, but be aware of the mux overhead. "My" calculator calculates the bitrate without mux overhead (that's why the calculated bitrate is a bit higher), I do not know
if the one at videohelp does that this way, too. Without integrating the mux overhead into bitrate a lot of oversized encodes could be the result... ;-)

[Psycho Reptile]

@ NathanX

The calculator at vcdhelp does intergrate MPEG/Author overhead , and I don't think anyone will hold you responsible - the recommended matrices can always be changed to incorporate any new/changed matrices and bitrates

[vmesquita]

Do you know how to calculate mux overhead? I always wanted to implement this in DIKO but never found any formula...

[NathanX]

Do you know how to calculate mux overhead? I always wanted to implement this in DIKO but never found any formula...

Maybe you coud try this:
http://forum.doom9.org/archive/index.php/t-66145.html

or you could download vcdhelp.com's Bitrate-Calculator and analyse the jar-file ;-)

[Psycho Reptile]

Updated . Hope everyone likes the new features.

@ vmesquita

I did what NathanX suggested, analysed the jar file from the calculator at vcdhelp. I don't have my source to hand - I'll have a look and hopefully post a formula for DVD/SVCD mux overheads.

[Psycho Reptile]

Do you know how to calculate mux overhead? I always wanted to implement this in DIKO but never found any formula...

Here's how it's done in the vcdhelp calculator:

DVD MPEG/Author Overhead = (Media Size in MB) * (Number of Discs) - ((Media Size in MB) * (Number of Discs) / 1.021)
SVCD MPEG/Author Overhead = (Media Size in MB) * (Number of Discs) - ((Media Size in MB)* (Number of Discs) / 1.02)

[vmesquita]

@Psycho Reptile
Thanks for your efforts, but unfortunatelly that formula doesn't work well when you increase footage: Overhead for 2 hours of video is much bigger than overhead for 6 hours of video (targetting the same media, 1 DVD for instance). I've found out this in tests but never came out with an exact formula