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What is a Video Merger?

Video merger is a simple yet highly useful tool for content creators, social media managers, designers, and anyone who works with video content. If you're looking to merge multiple videos into one file, this tool is perfect for you. Just upload unlimited clips and merge multiple videos into one seamless compilation. Suppose you were at an event, your friend recorded event videos in parts and shared videos. You have complete event video but in parts. Just open ClikDeo video merger tool, upload all parts, choose correct positioning and then your video parts start merging into one complete event video. Video merger tool is basically considered as a glue for video files. You might have recorded a presentation in three parts, or your device has multiple short clips from and event, or you are a YouTuber and want to combine a video intro, main content, an outro into one final video. Instead of opening heavy softwares like Premiere or Final Cut, our tool merge your videos right in your browser, without uploading your videos to any external server. The output will be a single video file that plays from start to end without any visible digital lines between the original clips.

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History of Video Merging — The Timeline

Mechanism — How does video merging actually work?

People assume merging videos is like taping two film reels together. It's not. If you want to combine video clips into one file, you have to load clips, calculate duration, render frames, and record the final stream. Here's what happens step by step when you upload clips and click the merge button:

• 1. Loading clips into memory — Whenever a user uploads a video to, the uploaded file is read using the browser's file API. As user can upload or use multiple videos to merge, tool creates temporary URL for each clip so it can be played back without uploading anywhere. All clips will stay in your browser's memory during process.
• 2. Calculating total duration — To merge multiple videos into a single clip. Tool calculates each clip duration and then calculate the total duration of the finalized video. This also helps tool with progress tracking during merging process.
• 3. Setting up the canvas — When user uploads a first clip, tool creates a hidden HTML canvas element. The canvas element dimensions match the dimensions of first uploaded clip. If next uploaded clips have different dimensions then tool scale them to adjust according to canvas element dimensions.
• 4. Frame-by-frame rendering — Tool moves from your first clip from start to end on a hidden video element, at about 30 frames per second. Tool draws that frame on to the canvas. This creates a visual stream of the video.
• 5. Audio handling — When tool draws clip frames on to the segment, tool will also extract audio from your original video using Web Audio API. After that Web Audio API connects these audio context with video's audio track. If you have muted original audio of uploaded clips, then those clip tracks will be ignored. And if you have added background music, then that music will also mixed in original video's audio track.
• 6. Recording the merged stream — The MediaRecorder API is responsible for capturing everything drawn on the HTML canvas element along with mixed audio. It saves this separately and then assembles them into a single video blob. As all the processing and merging clips is a real time task, so merging a 10-minute video takes about 10 minute.
• 7. Creating thumbnail previews — Whenever user select a clip, tool generate preview thumbnails for every clip in your timeline. This preview thumbnails have multiple frames from the selected video file. These thumbnails helps you to identify which clip is without play clip.
• 8. Providing navigation controls — In the final merged video, tool tracks the points where each original clip starts and ends. Back and Next button below the merged video player helps you to jump directly to the beginning of each clip, which helps to find each clip in final merged video.
• 9. Downloading the final file — After merging, when you click download button, the video blob is saved to your computer as an MP4 or WebM file. The original clips will remain untouched on your computer.

Important notes: All the processing done in your computer. So, merging takes as long as your clips length. For example, if you have three clips, each clip is 2 minutes long and the merged video will be of 6 minutes, merging will take about 6 minutes. If you have an older computer, it might take a bit longer.

Where can you use the merged videos?

Videos merged with this video merger tool are standard MP4 or WebM files, nothing special. So, you can treat these videos like normal videos. You can upload them anywhere you'd normally upload a video. Here are some common platforms listed below, where people uploading these edited videos:

Real-world examples: Suppose a teacher recorded lesson videos separately and needs to share these lessons with students. It's time taking process to share every single lecture one by one. So, teacher can upload all the lessons to "Video Merger", merge all the files into one complete lesson video, and share it in just one go. A content creator combines intro, main content, and outro of a video into one final video and uploaded to YouTube. The tool doesn't restrict how you use the output, do whatever you want to do with it.

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Understanding the merging options

Timeline reordering: Adjust arrangement of your selected videos by pressing up and down arrow next to each clip in the timeline. The first clip at the top in timeline will play first in the merged videos and then next videos. This feature helps you to arrange your story exactly how you want to play.

Background music: You can also upload your own audio file to merged videos. Upload audio file will play throughout the entire merged video. If the uploaded audio file is shorter than the merged video file then the audio file will automatically loops and start again when finished.

Mute original audio: You can simply add your own voiceover or background music because you can remove all of the video's original sounds.

Navigation controls: After merging, merged video will display inside a preview box. This box has Navigation controls (Back and Next ) buttons. Use these Back and Next buttons to jump at the starting points of every clip. This helps you to check each clip transitions without having to play all the merged video and check manually.

Thumbnail previews: Each selected clip has a thumbnail preview in timeline. This thumbnail preview shows multiple images taken from different points of uploaded clip. Using these thumbnail preview you can check what's inside the clips without playing that clips one by one.