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compressing a MKV
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Stue1975
Newbie
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28. January 2009 @ 11:10 |
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Does anybody know whats the best app to compress a MKV, ive got a few files which are around 8 1/2 gig, i just need them to fit on a dual layer dvd's but wont.
any ideas please.
Thank you
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KajNrig
Senior Member
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28. January 2009 @ 11:27 |
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No way to actually compress an .mkv... the streams inside it, though, are another matter entirely.
I'm guessing you want to play this HD .mkv movie on your PS3, then?
You've got a few routes.
1.) Re-encode the video. Takes a long time and you lose a bit of video quality (or a lot, depending).
2.) Re-encode the audio. Takes a lot less time and you lose a bit of audio quality (or a lot, depending).
3.) If you've got some needless tracks on there (like, say, other audio tracks or so that you don't want), you can get rid of those.
4.) Is it 8.5 GB? Or 8,500,000,000 bytes? Depending on which answer you give me, it either should or shouldn't fit on a dual-layer DVD. (I'm guessing it's the latter, though, since you're saying it won't fit on a dual-layer DVD.)
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Stue1975
Newbie
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29. January 2009 @ 01:46 |
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Thank you KajNrig,
I think the best way for me would be to Re-encode the movies, is there a application which re-encodes and enables you to fit it to a dvd9, ive used a couple but they always seem to en-code to same size.
Thanks again
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KajNrig
Senior Member
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29. January 2009 @ 15:34 |
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ConvertXtoDVD MIGHT be able to do it for you, but I prefer a combo of programs called MeGUI and Avisynth.
It's more than a bit complicated, though, so if you want to use that, let me know and I'll get you started on it.
There are some other HD video programs out there, but I'm blanking on them right now. I think they all use Avisynth as a base, though.
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Stue1975
Newbie
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30. January 2009 @ 01:46 |
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Thanks KajNrig ill give that app a go later today.
Thanks for your time
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Stue1975
Newbie
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2. February 2009 @ 06:02 |
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KajNrig thanks for the help so far convertXtoDVD work a treat easy to use and gets my 8.7 gig films onto a DVD-DL but have you any advice on the same using MeGUI.
Thanks again
Stue
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KajNrig
Senior Member
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2. February 2009 @ 11:19 |
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Well, MeGUI works with Avisynth scripts, which in turn work with the actual video. Just note that re-encoding a big file will take a LONG time, especially if your computer is fairly old. For comparison, a 8.5GB 720p movie took about... 36 hours to re-encode on my 2.4 GHz Pentium 4. So yeah. Fair warning.
If you want to convert the video using MeGUI, I'd suggest first getting mkvtoolnix and MKVExtractGUI to extract your audio stream from the .mkv to figure out how big it is. (I'm talking about JUST the audio, not the .mkv file, which is the video + the audio + any subtitles + any extras.)
Then open up Notepad. Type in:
DirectShowSource("C:/...path.../your movie.mkv")
Save the file, and make sure the extension is ".avs" (Avisynth script).
Open up MeGUI, let it update, and then open your .avs file. You should get a preview of your video.
Select an x264 profile, then go up to Tools (or Options, something like that), click on Bitrate Calculator, and you should see something like "File size." Enter in a value so that the re-encoded video + the audio = or < 8.5 GB. This is so that when you mux them together, you'll get a file that'll fit on a DL-DVD.
Anyway. Click "Enqueue," and look in the Jobs tab. Depending on the profile, you'll have one or two jobs (or more) lined up. Either way, just click on "Start" and the re-encoding process will start. Remember, though, that this could take a LONG time.
Once everything's done re-encoding, simply mux the video and audio back into an .m2ts container with tsMuxer, burn it onto a DVD, and you should be good.
...that all said, I don't really recommend this method, simply because it takes SO LONG to re-encode the video. If you've got a good computer, though - Dual/Quad-core, good RAM, etc. - then you should be able to get that part done in just a few hours. It's just... for me, the effort isn't worth the finished product.
So, that said, you could go another route and re-encode the audio, which'll also result in a smaller total filesize. I use eac3to, but you can use whatever audio converter you want. The process is more or less the same as with re-encoding video:
Figure out the size of the video, and from there figure out how much you have to work with (eg - if video = 7.0 GB, then you've got roughly 1.0 GB for audio).
When you convert your audio, try to figure out the bitrate so that you end up around that 1.0 GB mark (so as to lose as little quality as possible).
Re-mux to .m2ts with tsMuxer, burn it to DVD, and you should be good to go.
Let me know how things work out.
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Stue1975
Newbie
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5. February 2009 @ 06:38 |
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Thank you for your help i will give this a try.
Regards
Thanks again
Stu
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