How to Combine Videos and Add Subtitles

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How to Combine Videos and Add Subtitles

20 December 2018 Ashley S. Miller Specialist of Customer Service Dept.

Last update by James Smith at 9 November 2026

Summary
When we edit videos, it is common for us to combine videos into one. And adjust the audios and subtitles as well. Here, we are going to introduce how to combine videos with frames and audios synchronously.

Reasons of Combining Videos losslessly?

Lossy video combination will change the frames and reserve more bright part of the frame. As a result, the quality of the video will be reduced or the audio of the video will not be synchronous.

So it is necessary to combine videos in a lossless way. Here we are going to introduce method about how to combine videos losslessly with frames and audios synchronously.

Part 1: Combine Video Losslessly

It is recommended to try Renee Video Editor Prowhen we want to create the lossless video combination. This software supports to join videos without reducing the video quality and can make the audios in synced with the frames.

Step 1: Launch Renee Video Editor Pro and click “Video Toolbox”.

Step 2: Click “Add files” to select the videos you want to combine.

Step 3: Select Output format and the target place to save the combined videos. It is recommended to choose MP4.

Step 4: Check the option “Merge all files into one” and then click “Start”.

Then all the videos will be combined and saved in the target place you set. If you want to add subtitles to your video, please follow steps in part 2.

Part 2: Add Subtitle to Videos

Combining videos with Renee Video Editor Pro is easy and convenience. Then we are going to get more about how to add subtitles to videos with Renee Video Editor Pro.

Subtitle function in Renee Video Editor Pro supports to upload subtitle file locally or get the file online. You can also adjust the position and format of the subtitle.

1. Upload the subtitle file you have

Step 1: After adding the target video to Renee Video Editor Pro, please click “Subtitle”.

select subtitle in Renee Video Editor Pro

Step 2: Click “+” button and select “Load Subtitle File” in the menu.

Step 3: Please select the subtitle file with extension of “.srt” in local disk.

2. Create new subtitle file

Step 1: Click “+” button and select “Create Subtitle File” in the menu.

Step 2: Set the name of the created subtitle file and click “Save” in the pop up window.

Step 3: Edit the subtitle in the subtitle file after opening.

Step 4: Please save the subtitle file. Then it will be added to the video automatically.

3. Search the subtitle online

Step 1: Click “Search” to search the subtitle online.

Step 2: Try to search and download the target subtitle in the pop-up window.

4. Adjust the position and style of the subtitle

Step 1: Please adjust the position of the subtitle by clicking “Top”, “Middle” and “Bottom”. Besides, you can also adjust the position manually.

Step 2: Click “Font” to change the style of the subtitle.

You can add subtitle to videos with methods above. However, if you find the audio is not synced with the subtitle, please fix it with steps below.

Part 3: Solution to Solve the Audio Subtitle Sync Problem

You can add subtitle to videos with methods above. However, if you find the audio is not synced with the subtitle, please fix it with steps below.

Step 1: Please click the “Edit” icon which is marked with red.

Step 2: Please adjust the start and end time of related subtitles in the pop-up window accordingly.

Step 3: Please save the subtitle file. Play and check the audio and subtitle in video.

Tips: Besides combining the videos and adding subtitle, Renee Video Editor Pro provides more functions:

Renee Video Editor Pro - Professional Vdieo Edit Software

Screen Recording - Record screen and webcam in Windows computer.
Cut Videos - Specify the start and end time in the video to cut a video clip.
Corp and Rotate Function - Support to crop and rotate the video.
Effects - Provides filters, zoom in and out and sound effect to users.
Watermark - Users can add text, image, video watermarks to videos. Also supports to remove watermark from videos.
Music Function - Add background music to videos. You can create the voice over by yourself or add local music as background music.
Subtitle Function - Customized your own subtitle.

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Reasons of Combining Videos losslessly?

Part 1: Combine Video Losslessly

Part 2: Add Subtitle to Videos

1. Upload the subtitle file you have

2. Create new subtitle file

3. Search the subtitle online

4. Adjust the position and style of the subtitle

Part 3: Solution to Solve the Audio Subtitle Sync Problem

Tips: Besides combining the videos and adding subtitle, Renee Video Editor Pro provides more functions:

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