Discussion Forums > Technology
A/V sync problems with selfmade MKVs... Help?
iindigo:
So I recently acquired an Exiled-Destiny release of an anime I previously had. Both releases were DVD rips. The E-D release's video and audio were both quite clearly superior, but the old release's SSA softsubs and default Japanese audio do a much better job of keeping my eyes and ears intact and not clawed out than E-D's painful vobsubs and default English audio.
My solution? To (attempt) to create my own mix of the two, of course. For the most part, it's worked pretty well... I've discovered many of the ins and outs of mkvextract and mkvmerge and can create a pretty full-featured MKV with chapters, titles, etc.
A problem I ran into after merging E-D's audio and video with the other group's subs, however, is that the video is a few seconds behind the audio and progressively gets worse as the file plays on. I do research and find that this is due to the default duration of the video in my MKV defaulting to 25FPS instead of the 29.970FPS it's suppossed to run at. "No problem," I think, as I append --default-duration 1:29.970fps to the end of my mkvmerge command.
After the MKV file has compiled, I open it up to find that the problem still exists and that the --default-duration command has been ignored completely. The framerate is still that damn 25FPS.
Would any of the more video-savvy types around here know what I'm doing wrong? Here's the command I'm using, if it helps at all:
--- Code: ---
mkvmerge -o Episode\ 1.mkv ep1.avi ep1j.ac3 ep1e.ac3 ep1.ssa --default-duration 1:29.970fps --language 2:jpn --language 3:en --language 4:jpn
--- End code ---
Thanks!
Excale:
If you like, you can contact one of my team's encoders on my website (irc.raitian.info #exssubs) and pop in and post ur question.
nstgc:
Could you pad either the video or audio, or crop one? That won't fix the rate difference, but it should fix the initial difference. I use the gui version whenever I have problems.
Also try this: --default-duration 0:30000/1001fps
fohfoh:
So you're having issues with the hard subs? Did you try toying around with soft subs?
Slysoft:
get mkvtoolnix. It can't be any simpler. You just import the audio, video, and subtitle files and hit mux. Of course there are a ton of advanced settings but I don't mess with those. There's also a GUI or a command line version depending on which you prefer. This program is acknowledged by matroska themselves, so you can be sure that it's good.
http://www.bunkus.org/videotools/mkvtoolnix/index.html
It also works good for ripping tracks out of the mkv, if you for example liked one group's video but another group's subs.
Navigation
[0] Message Index
[#] Next page
Go to full version