How to Join Videos Without Conversion using tsMuxerGUI

This post is a follow up to the one on free tools that can join videos without conversion. The explanation on how this works as well as the conditions needed for this to work are in that post, so make a point to read it should you encounter problems joining your videos as detailed below.

As previously stated, tsMuxeR only outputs to TS and M2TS containers and as such has restrictions on the video formats you can input. It supports only the following formats:

Containers Formats:

  • TS
  • M2TS
  • SIFF
  • MOV/MP4
  • Blu-ray

Video Codecs:

  • H.264/MVC
  • Microsoft VC-1
  • MPEG-2


Audio Codecs:

  • AAC
  • AC3 / E-AC3(DD+)
  • Dolby True HD (for streams with AC3 core only)
  • LPCM

Subtitle Types:

  • M2TS Presentation graphic stream
  • SRT text subtitles

If your videos have any of the above containers, you can proceed to use tsMuxeR. It’s however a good idea to make sure both the video and audio codecs are supported also, since some containers like MKV, MP4 and MOV may contain unsupported video/audio codecs.

To check the video and audio codecs in any video, you can use MediaInfo. The Windows Explorer Details Bar also lists this info when you select a video however it’s doesn’t work on all videos.

Windows Explorer Video Details

To join video using tsMuxeR, follow the steps below.


Join Vidoes Losslessly using tsMuxerGUI

join vidoes tsmuxer

1. Get tsMuxeRGUI from here. The software comes as a standalone package and as such doesn’t need to be installed.

2. Run tsMuxerGUI then in the Input tab, click the Add button to add the first video to join. You can also drag and drop the video into the input window.

Add first Video

3. Next, click the Join button and select the video to join to the first. If you’ve additional videos, use the Join button to add them.

Add Videos to Join


  • Under tracks you’ll see a list of video and audio codecs. Make sure they are included in the supported list otherwise the muxing won’t work. 
  • You should also have just one video and audio codec there – any more will mean your videos use different codecs and the joining won’t work even if the codecs are supported.
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Codec Listing

4. Next select the Output format. You’ve the choice of TS and M2TS as well as Blu-ray ISO, Blu-ray and AVCHD Folders suitable for hardware players.

Demux is for separating the streams so don’t use that.

Mux to Join Videos

5. Click the Start muxing button to start the joining process.


Kelvin Muriuki is a web content developer that's passionate about keeping the internet a useful place. He is the founder and editor of Journey Bytes, a tech blog and web design agency. Feel free to connect with him regarding the content appearing on this page or on web and content development.

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