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How to Merge OBS Recordings in FLV or MP4 Video Format into One?

OBS Merger - Join Multiple OBS Recordings into One on Mac and Windows


Want to merge two or more OBS recordings into one single file for a better viewing or uploading to YouTube or other websites or a convenient sharing to your friends? If so, simply get iDealshare VideoGo, the professional OBS recordings merger, described in this article is what you need.

OBS Recordings Merger - iDealshare VideoGo

  • Merge the two or more OBS recordings in FLV or MP4 into one single FLV or MP4 without video re-encoding.
  • Merge multiple other video files in AVI, MOV, MKV, WMV, ASF, VOB, etc to one big AVI, MOV, MKV, WMV, ASF, VOB, etc as well as merge multiple FLV or MP4.
  • Merge multiple OBS recordings in FLV, MP4 or other video files and convert the merged file into other video formats.
  • Edit the FLV or MP4 OBS recordings, like rotating 90, 180, 270 degrees, splitting into many small files, adjusting video resolution, bitrate, frame rate, etc, deleting necessary video part, etc.
  • Extract audio, such as MP3, from the FLV or MP4 OBS recordings or from other video files.

Merge OBS Recordings Guide

Follow the step by step guide below to merge two or more OBS recordings as you want. The guide will take merge two or more OBS recordings in FLV video format as an example.

Make Preparation: Free download OBS Recordings Merger

Free download the professional OBS Recordings Merger - iDealshare VideoGo (for Mac, for Windows), install and run it, the following interface will pop up.

OBS Recordings Merger Mac Version - iDealshare VideoGo Mac Version

Step 1 Import OBS Recordings files

Click "Add file" button to add two or more OBS recordings in FLV to iDealshare VideoGo. You can also choose to drag and drop the OBS recordings to iDealshare VideoGo.

Merge OBS Recordings FLV Files on Mac

Step 2 Click Merge button

Click Merge button (or simply right click to open the context menu, and then click the "Merge" option), the merged OBS Recordings will automatically appear below the OBS Recordings with the name like "Merge 1".

Step 3 Set output video format (Optional)

Click the "Profile" drop down button to select desired video or audio format for the will be merged MP4, if you like the joined file is still in MP4 format, simply select MP4 as output format.

Step 4 Finish Merging OBS Recordings FLV videos

Click the "Convert" button to finish merging two or more OBS recordings in FLV format into one MP4, AVI, MOV, or FLV.

How to Get a Better Video Recording with OBS?

OBS, short for Open Broadcaster Software, is a free and open source software for video streaming and recording. If you want to get a better video recording quality you had better make your settings as follows:


  • Use CBR: Disabled
  • Quality Balance: 10
  • Bitrate: 1000
  • Use custom buffer size: Enabled
  • Buffer size: 0

Advanced Options

  • x264 CPU Preset: Ultrafast
  • Use custom x264 parameters: Enabled
  • Custom x264 parameters: crf=X
  • Where X is anywhere from 1-20, lower being higher quality / higher CPU usage. A good place to start is the 15 - 20 range. A CRF of 0 enables lossless recording which will have very high file size and CPU requirements and introduces compatibility issues, so be careful!