How to Change Video Container without Losing Quality?

Updated on Feb 9, 2022
  • Download Download the best video converter to change video container easily:
  • 1. Import video file(s) into the conversion list;
  • 2. Choose an output video format;
  • 3. (Optional) Adjust parameters to enable Lightning Mode/Remux;
  • 4. Change video container without losing quality.
Quick Navigation
1. About Changing Video Container
2. Change Video Container without Encoding (For Beginners)
3. FFmpeg Change Container (For Advanced Users)

Author’s Words:

Want to change video container for a better playback experience? This article gives two working solutions to change containers without any quality loss. Read on for more details.

1. About Changing Video Container

A video container is a wrapper format used to store multimedia data, including video, audio streams, and sometimes subtitles. MP4, MKV, and AVI are the common video containers.

By saying changing video container, most people mean changing from one container format to another while keeping the data intact. This process is called remuxing or repackaging, and it is a lossless conversion. You’ll get the original video and audio quality after the process. And since the data won’t be re-encoded, the conversion will be done at the fastest speed (compared with the CPU-intensive transcoding). These are the reasons why many people prefer to change video container only.

For changing video container without encoding, some requirements are to meet, including:

  • Make sure the parameters, including codecs, bitrate, resolution, aspect ratio, etc., remain the same;
  • No video editing before conversion.

In the following parts, we will introduce to you two working ways to change video container without losing quality in detail.

2. How to Change Video Container without Encoding? (For Beginners)

HD Video Converter Factory Pro is a professional video converter program designed to handle various types of video/audio conversions, including changing video containers without encoding. It can help you encapsulate videos into another container with zero quality loss in simple clicks. It’s also got a batch conversion mode and hardware acceleration support that can greatly improve the conversion efficiency. The conversion process is straightforward.

Now, the following tutorial shows you an example of how to remux MKV to MP4 with this software. Before start, please free download free download the software and install it on your PC.

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HD Video Converter Factory Pro makes it easier than ever to remux a single video or multiple videos to other containers at the fastest speed and without quality loss. Get it now to change between format containers handily and rapidly.

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Step 1. Import Video File(s)

Launch HD Video Converter Factory Pro and open the “Converter.” Click “+ Add Files” to load the needed videos. You can also drag these files into the converter directly.

Step 2. Choose Output Format

Click the right-side format image to open the format library and then select one appropriate format as the output format. Note that the selected format must support the encoder used in the original file. For example, to remux an H.264 encoded MKV file, you can choose MP4 or MOV as the output format.

Step 3. Maintain Parameters

The program will automatically smart fit the best settings for your conversion after you selected the output format, usually with the same encoder, same resolution, etc. But you should double-check the parameters in the “Parameter settings” and ensure everything matches the source data. You will see a lightning icon appear at the conversion list when the video is ready for remuxing.

Step 4. Start Lossless Conversion

Click the bottom triangle button to set an output path. When everything is ready, hit “Run” to start changing the video container without encoding.

3. FFmpeg Change Container without Losing Quality (For Advanced Users)

FFmpeg is a very powerful cross-platform open-source project for dealing with multimedia file tasks, such as video conversion and audio streaming. And it is more than enough to change video container without losing quality. FFmpeg is command-line-based, however, and people who are unfamiliar with shell scripting might find it difficult to get started. Yet, for power users, FFmpeg is one of the best choices when it comes to a/v conversions. The below FFmpeg MKV to MP4 example shows you how to use FFmpeg to change container on Windows 10.

Step 1. Download and install the latest correct version of the FFmpeg ZIP file from the official website

Step 2. Extract the FFmpeg file and rename the file as “ffmpeg.” Then move the folder to your C: drive.

Step 3. In your Windows search bar, input “system environment variables” and open the best match result. Click “Environment Variables…” and select “Path” under the user variables section. Click “Edit…” and add the FFmpeg binary directory to the path, e.g.  C:\ffmpeg\bin. Then click “OK” to save the changes.

Step 4. Type “cmd” in your system search bar to bring up “Command Prompt.” Then input “ffmpeg -version” and press Enter to see if the configuration is done.

Step 5. Copy the path of the source video file. Then in the CMD, input “cd *the copied source path*” and press Enter to enter the file directory.

Step 6. Next, input “ffmpeg -i *example*.mkv -c copy *example*.mp4” and press Enter to start the single file remuxing.

Note: *example* means your file name.

Tips: If you want to batch remux the files, you can switch into the directory that contains the multiple source files and run the following command line.

for /R %f IN (*.mkv) DO ffmpeg -i "%f" -c copy "%~nf.mp4"


That’s all for how to change video container without encoding. If you have any questions during the remuxing process, please feel free to contact me on Twitter. I’ll do my best to help. Thanks for reading!

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