concat-multisound-mkv

Concatenate all videos which has multiple track audio and is made by OBS, changing sound volume.

OBS can record video which has multiple track audio. But, using the video with multiple track audio is not easy. For example, you need complex ffmpeg command or professional editing software.

This product give you easy way to record and edit videos with OBS. You need only some rule about OBS recording and make command.

Requirements

OBS
GNU Make and command line

How to Use

Requirement Usage of OBS

We assume that you record videos with multiple sound tracks by OBS. The video has all sound in track 1, has only game sound in track 2, and has only voice sound in track 3.

More detail of OBS configurations, please google it.

Record Video

We assume that you record videos with adove settings. You can stop and restart with new video file as many time as you like. It makes video small, and you manage it easily.

Move Videos

Move recorded videos to same directory with Makefile of this repository. Our script targets all videos in this directory. The videos should have name with recorded date, because concatenation order corresponds one sorted by names.

Edit Volume configuration

Open Makefile with editor, edit lines of BGM_VOLUME and VOICE_VOLUME. Game and voice sounds will changed by this values. You can use ratio by float and dB notation.

For example, if you want to change game sound down, and do not want to change voice sound.

BGM_VOLUME := -15dB
VOICE_VOLUME := 1.0

Concatenate Videos

Run make command and wait. It will generate output.mkv video.

$ make
ffmpeg -i input1.mkv -vn -map 0:2 -codec:a aac -filter:a volume=-10dB input1_bgm.aac
...
video:2364kB audio:244kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.258335%
$

Cleaning

After script have finished, run make clean to remove old temporarily files. And move your videos and output video to other place.

yonta / concat-multisound-mkv