Transport Stream, is generally shortened to TS. It's a video encoded format principally used for saving streaming videos, which can compress video data with the standard MPEG-2 codec. If you have multiple separate TS video clips and would like to merge them into one TS video in original quality, this is where your idea could be realized. Here is a detailed summary of 4 lossless TS joiner software.

Part 1. How to Combine TS Files by Joyoshare Video Joiner

A quality loss should be a matter of general concern while merging TS files. For fear of any loss, a lossless program going by the name of Joyoshare Video Joiner is presented to you. It's an award-winning and user-friendly desktop video joiner with two modes to accommodate the various needs of users.

In more specific terms, it carries with both the 60X-high-speed mode for lossless join of files with the same format and the encoding mode for the combination of different media files, customization of codec, resolution, bit rate or other parameters, additional video editing. Furthermore, its huge compatibility makes it support perfectly MP4, TS, MTS, HD, DVD, FLV, WebM, OGG, ASF, WMV, MKV, AVI, M4V, etc, and a mass of device-compatible formats.

Step 1: Batch import TS files to the program

Get Joyoshare Video Joiner installed on your computer and TS files to be merged added to it. You have two methods for files adding, one of which is going to "Open Files" located at the lower-left corner. Another is by way of direct dragging.

Step 2: Make output format settings

Next, head to "Format" to set up merging mode and output format. To join TS files without re-encoding, you have to work with the high-speed mode, which is at the focus of merging identical media files with remaining the original quality. Afterward, select "Original" as the output format from "General Video". If you would like to combine TS files to MP4, just mark "MP4" as the export format.

Step 3: Cut TS files

Afterward, click on "OK" to return to the beginning interface. You can start previewing your TS videos. As for unnecessary content, easily slide the yellow timeline to clear it. Also, the program provides options to rename and rearrange media files. Do it as you wish if need be.

Step 4: Combine TS files without re-encoding

Eventually, find and tap on "Convert" at the bottom right corner. This action will activate the merging process. Shortly after, your TS files would be merged together at 60X high speed with zero quality loss.

Part 2. How to Merge TS Files by idoo Video/Audio Joiner

Another method available to combine TS files with original video quality is by utilizing idoo Video/Audio Joiner. It's a simple-to-handle and strongly compatible Windows joiner program. Not merely is it able to batch join lots of video files without re-encoding but also convert them to any specified format, such as MKV, TS, MTS, MOV, MPEG, AVI, WMV, HD videos... To use it for merging TS files, follow these steps.

Step 1: In the first place, download and install idoo Video/Audio Joiner from its official website, After that, launch it on your Windows computer and click "Add Files" to import TS files or simply dragging;

Step 2: Use the "Up" and "Down" buttons to make your TS files ordered as your will. Then set "Start" and "End" time or drag the scissor-shaped handle to cut excrescent parts off TS videos while previewing;

Step 3: Next, go for "Output Settings" to select an output format and set video and audio parameters like quality, size, Bitrate, aspect ration, etc. With the need of joining TS files without loss of quality, check "Set as the default output format";

Step 4: Once done, get back to the main interface and designate a destination output file. Lastly, you only press on "Start".

Part 3. How to Join TS Files Using FFmpeg

FFmpeg provides 3 methods to concatenate video files, namely, "Concat demuxer", "Concat protocol", and "Contat filter". The first one is most flexible, which requires the same codec but can work with any container format and avoid the re-encoding process. The second one just supports a select few container formats like MPEG-2 transport streams, DV. The last one applied to the situation where your files that you need to join have different codecs and different parameters. For the join of TS files without re-encoding, the follow selects "contact demuxer" to get it done.

Step 1: Before anything else, create a new folder with the name of TS to save your TS video files that need to be merged on desktop;

Step 2: Download the proper version of FFmpeg Static with the help of the link: https://ffmpeg.zeranoe.com;

Step 3: Visit FFmpeg Static folder. From "bin" file, select and copy "ffmpeg.exe" into your TS folder;

Step 4: Press both the "Win" and "R" keys on your keyboard to activate the Windows command prompt. Then, type "cmd.exe" in the input field and click "OK";

Step 5: In the following window, enter the desitination folder path of your TS files. Next, create a mylist.txt file with all your TS files you want to combine;

Step 6: Now, enter the command: for %i in (*.ts) do @echo file '%i') > mylist.txt and press the "Enter" key;

Step 7: After that, input command line: ffmpeg -f concat -i mylist.txt -c copy output.ts to combine and export the TS files into one. The new combined TS video will be stored in the previously created TS folder.

Part 4. How to Combine TS Files in Text Editor 

This is a useful trick on how to join multiple TS files together, which needs to draw support from a text editor like Notepad. The nice thing the method brings is that you won't need to install any video joiner on your computer. Just with a few of easy clicks, your TS video files are going to be merged into a whole one without any loss of quality. Surely, few people are exposed to the simple trick. Thus, below explains how to do.

Step 1: First of all, open a text editor on your computer and then input the command: copy /b *.ts joined_files.ts;

Step 2: Next, choose "Save" > "Save as" to save the file with a file name of "joiner.bat". It is very important that the file extension is .bat rather than .txt;

Step 3: Place all these TS files to be merged in one folder and name them in the order of merging, such as 1.ts, 2.ts, 3.ts, and so on;

Step 4: Whereafter, put the file with the name of joiner.bat that you create into the TS folder. Then, double-click the joiner.bat file. Like that, the merging process sets about. The final joined TS video would be stored in the joined_files.ts file.

For more methods, please go to the source page:
https://www.joyoshare.com/join-video/join-merge-combine-ts-files.html