MKV Optimizer - Save disk space by eliminating unneeded audio tracks

Try the new beta 1.12 I just updated.

If it's still not working, click the View MKV Info button and post the details of one of the files.

Still the same.

http://pastebin.com/zumC8ctE

Amelandbor Wrote:Still the same.

http://pastebin.com/zumC8ctE

ahh... that is the problem. What language is that? I'm guessing german...

I will need to add translation for other languages. I'll get started on that for the next release.

Dutch

compcentral Wrote:It really depends on the length of the film and the encoded bitrate, but for each DTS track removed, I gained about 1-1.5 GB, and about half that for AC3 tracks.

It takes about 10-15 minutes to process each movie for me (using the server listed in my signature), but this depends on CPU/RAM of your PC... maybe even hard drive specs as well.

EDIT: I was curious... so I did the math...

Most DTS tracks seem to use a bitrate of around 1500 Kbps, so assuming the movie is say 100 minutes long:

1500 Kilobits/sec * 1024 bits/Kb = 1536000 bits/sec
1536000 bits/sec / 8 bits/byte = 192000 bytes/sec
192000 bytes/sec / 1024 bytes/KB = 187.5 KiloBytes/sec
187.5 KiloBytes/sec * 60 sec/min = 11250 KB/min
11250 KB/min / 1024 KB/MB = 10.98 MB/min
10.98 MB/min * 100 minutes = 1098 MB saved for 100 minute movie

Most AC3 tracks seem to use a bitrate of around 640 Kbps, so again, assuming the movie is say 100 minutes long:

640 Kilobits/sec * 1024 bits/Kb = 655360 bits/sec
655360 bits/sec / 8 bits/byte = 81920 bytes/sec
81920 bytes/sec / 1024 bytes/KB = 80 KiloBytes/sec
80 KiloBytes/sec * 60 sec/min = 4800 KB/min
4800 KB/min / 1024 KB/MB = 4.69 MB/min
4.69 MB/min * 100 minutes = 469 MB saved for 100min movie

Hopefully that's right... I broke it down in its simplest form so you see how it's fully calculated.

Great! If it takes that long to save that much space, deffo worth the effort. Will give your tool a go when I start running low on space!

Here are the mkv header strings that I will need translated into other languages if anyone else wants to help...

I took at crack at the dutch versions based on your pastebin.

track type: audio (dutch = spoor type: audio)
track type: subtitles (dutch = spoor type: subtitles
track type: video (dutch = spoor type: video)
track type: chapter (dutch = spoor type: chapter)
enabled (?)
default flag (?)
forced flag (?)
codec id (appears to remain "codec id")
language (?)
sampling frequency (dutch = voorbeeld frequentie)
channels (dutch = sporen)

I need help with the rest.... could you look at a few MKV Infos to fill in the blanks for me?

Here are the dutch translations:

track type: audio - spoor type: audio
track type: subtitles - spoor type: subtitles
track type: video - spoor type: video

track type: chapter (?) Couldn't find this one. Chapters is mentioned below as "Hoofdstukken" but when I look further into it, everything is named Chapter (ChapterAtom, ChapterUID etc.)

enabled - aangezet
default flag - standaard markering
forced flag - geforceerde markering
codec id - codec id
language - taal
sampling frequency - voorbeeld frequentie
channels - sporen



Edit: I tried setting mmg to English, but then I still get question marks while when I open a file mkvinfo everything is in English.

Okay... I think I might have found a way to have mkvinfo translate the output into english no matter what the language of the local computer is.

Give beta 1.13 a try and let me know how it works.

It works.

Nice work

Still some weird things though.

MKVinfo gives no default flag on some of them, but when I look at them in mkvmerge a default flag is set.