An old thread but others might be interested. The following python script will batch remove non English audio and subtitles, set the default audio track to the first English track and ensure that there are no default subtitles (only minor modification to support other languages - probably should be a command line option). MKVToolNix is a free and open-source Matroska libraries and a collection of tools for the Matroska media container format introduced by Moritz Bunkus. Serving for Linux, BSD, Mac and Windows, the program set allows users to merge multimedia streams, list all elements, extract specific parts, analyze and modify properties for their Matroska.
What is an MKV joiner
MKV is a free container format that is usually used for storing movies. What is the default browser for mac os x. It can store multiple image, video, text, and audio tracks in one file.
Clideo's MKV Merger allows you to join videos, pictures, and music together. You'll also be able to convert the output file to almost any desired format.
The tool is online, so you don't need to download anything to your device and risk its safety. It's also free, each file that you upload can be up to 500 MB in size.
How to merge MKV files
Add MKV and other files
Click on 'Choose files' to upload multiple files at once from your device.
Another option is to add them from Google Drive or Dropbox by clicking on the small arrow on the right of the button. The same arrow allows you to add a link to a video located in an external resource.
Combine MKV files
If you need to add more files, it's time to do that! You can use all three options from the first step on the top right.
Now, reorder everything you've added by dragging and dropping on the timeline below. The tool also allows selecting an aspect ratio and a crop option.
After that, add audio, trim it, and adjust the volume.
An last, select a format you want for the output video and click 'Merge'.
Save merged MKV
Have a final preview and make sure you like the result.
If so, download the video to your personal device or upload to cloud storage. If not, click 'Back to edit' without needing to start over.
I streamed a few DJ sets over the last few weeks with a bunch of friends as part of ‘covidcore’, an online get-together while we’re all in isolation. It’s been a while since I’ve played any DJ sets but it was great fun and thankfully I didn’t make too many mistakes.
Anyway, It was my first streaming experience and I found it a breeze to set up thanks to Twitch and OBS. When reviewing my recordings I noticed that my microphone level was pretty low so I decided to bust out the audio track from the video and raise it. Also when uploading my video to Youtube I also got a copyright notice about one the clips in my video which was subsequently being blocked, so I decided to edit that out too.
Here is how you can do it.
Note: I’m on a mac so all of the instructions are for that, but apart from installation the rest should be platform agnostic.
Steps
- Install mkvtoolnix
- Extract audio and video tracks from mkv file
- Optionally convert audio track if editing needed
- Merge audio and video tracks back in to mkv file
Install mkvtoolnix
mkvtoolnix is a set of command line programs for finding out information and modifying mkv (“Matroska”) files. You can install it with a GUI but I didn’t bother.
That’s it, boom!
Extract audio and video tracks from mkv file
For this step we are going to run this command
Java for mac os x 10.5 update 1 downloadtreeyour. In the above command we are using mkvextract, part of mkvtoolnix, to extract the video track which is encoded using the ‘h264’ codec and also the audio track which is encoded using the AAC codec.
In order to find out what your video and audio tracks were encoded with use the following tool
Might be good to reference the docs if you have trouble there.
Optionally convert audio track if editing needed
My audio editor couldn’t open the aac file I created so I converted it to FLAC format using ffmpeg, another command line program that is insanely useful for converting audio formats (amongst other things).
Mkvmerge Online Movies
So to convert I ran
Now I can open my flac file and edit the parts I want, like amplifying my microphone in the recording.
Merge audio and video tracks back in to mkv file
Right, now you have completed your editing we can stitch them back together again using the mkvmerge command Maplestory what does dmg do.
Mkvmerge Online Streaming
You can see I just merged the flac formatted audio back in. I just tried it and it worked. I need to read up a bit more on file formats to be honest so if you need more info check the docs.
Mkvmerge Split
Hope that helps someone :)