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How To Merge Multiple Videos on Ubuntu Using Command Line

Ubuntu 2

In this article, we will delve into the process of merging multiple videos on Ubuntu using the command line. This is a handy skill for those who work with video files regularly and prefer using the terminal over a GUI. We’ll be using three different tools: ffmpeg, mkvmerge, and melt.

Quick Answer

To merge multiple videos on Ubuntu using the command line, you can use tools like ffmpeg, mkvmerge, or melt. With ffmpeg, you can use the concat demuxer to merge videos by running a specific command. mkvmerge allows you to concatenate videos using the + sign, while melt lets you merge videos by specifying the input files and output format.

Prerequisites

Before we begin, make sure you have Ubuntu installed on your system. You should also have some basic knowledge of working with the command line interface.

Installing Necessary Tools

ffmpeg

ffmpeg is a powerful tool that can handle a wide range of multimedia processing tasks, including merging videos. To install ffmpeg, open your terminal and type:

sudo apt install ffmpeg

mkvmerge

mkvmerge is part of the mkvtoolnix package and is specifically designed to handle MKV files. Install it with:

sudo apt install mkvtoolnix

melt

melt is a powerful video framework from the MLT Multimedia Framework that can handle various video processing tasks. Install it using:

sudo apt install melt

Merging Videos

Using ffmpeg

Navigate to the directory where your videos are located. Then run the following command:

ffmpeg -f concat -safe 0 -i <(for f in ./*.mp4; do echo "file '$PWD/$f'"; done) -c copy output.mp4

Here, -f concat tells ffmpeg to use the concat demuxer for merging the videos. -safe 0 is required to use absolute file paths. -i is the input file, which in this case is a list of all the MP4 files in the current directory. -c copy specifies that the input streams should be copied as-is, without re-encoding. output.mp4 is the name of the output file.

Using mkvmerge

With mkvmerge, the process is straightforward. Run the following command:

mkvmerge -o output.mkv input1.mp4 + input2.mp4 + input3.mp4

The -o option specifies the output file. input1.mp4, input2.mp4, etc., are the input files. The + sign is used to concatenate the videos.

Using melt

With melt, the command is:

melt input1.mp4 input2.mp4 -consumer avformat:output.mp4 acodec=libmp3lame vcodec=libx264

Here, input1.mp4 and input2.mp4 are the input files. -consumer avformat:output.mp4 specifies the output file and format. acodec=libmp3lame and vcodec=libx264 set the audio and video codecs, respectively.

Conclusion

Merging videos on Ubuntu using the command line is a straightforward process once you understand the tools and commands involved. Whether you choose to use ffmpeg, mkvmerge, or melt, you now have the knowledge to merge videos efficiently and effectively. As always, make sure to refer to the man pages (man ffmpeg, man mkvmerge, man melt) for more information on these powerful tools. Happy video processing!

Can I merge videos of different formats using these tools?

Yes, you can merge videos of different formats using ffmpeg and melt. However, mkvmerge is specifically designed for merging MKV files, so it may not support merging videos of different formats.

Can I merge videos with different resolutions or aspect ratios?

Yes, you can merge videos with different resolutions or aspect ratios using ffmpeg and melt. These tools will automatically handle the necessary resizing and scaling to ensure a consistent output.

Can I merge videos with different audio codecs?

Yes, you can merge videos with different audio codecs using ffmpeg and melt. These tools will handle the necessary audio transcoding to ensure compatibility and consistency in the output file.

Can I specify the order in which the videos are merged?

Yes, you can specify the order in which the videos are merged using all three tools (ffmpeg, mkvmerge, and melt). Simply list the input files in the desired order when running the merge command.

Can I merge videos with different frame rates?

Yes, you can merge videos with different frame rates using ffmpeg and melt. These tools will handle frame rate conversion and synchronization to ensure a smooth and consistent output.

Can I merge videos with different codecs?

Yes, you can merge videos with different codecs using ffmpeg and melt. These tools will handle the necessary transcoding to ensure compatibility and consistency in the output file.

Can I merge videos with different container formats?

Yes, you can merge videos with different container formats using ffmpeg and mkvmerge. These tools will handle the necessary remuxing to ensure compatibility and consistency in the output file.

Can I merge videos with different bitrates?

Yes, you can merge videos with different bitrates using ffmpeg and melt. These tools will handle bitrate adjustment and synchronization to ensure a consistent output.

Can I merge videos with different subtitles or captions?

Yes, you can merge videos with different subtitles or captions using ffmpeg. You can add subtitles or captions to the merged video by using the appropriate command-line options in ffmpeg.

Can I merge videos with different video resolutions?

Yes, you can merge videos with different video resolutions using ffmpeg and melt. These tools will handle the necessary resizing and scaling to ensure a consistent output.

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