Convert MKV to MP4 for free quickly and safely online
Add File to Start Or drop files here. Max file size 50MB. Sign Up for max file size 100MB
Setting
Custom resolution:
| Operation | Free Trial Version | Logged-in Account | Pro Version |
 File validity period | No | 7 days | No limit |
 File number | 2 files/24 hours | 10 files/24 hours | No limit |
 File size | Less than 50MB | Less than 100MB | No limit |
 Batch processing | No | No | Yes |
 Advanced trimming | No | No | Yes |
 Secure transmission | Yes | Yes | Yes |
Failed to upload media file! Please try again, or use ArkThinker Video Converter Ultimate for Desktop.(Error code: 20015)
ArkThinker Video Converter Ultimate
The original video resolution is higher than 720p. If you want to output the original high resolution, you need to download the Pro Version. Or would you like to output the default 720p resolution?
Get unlimited Chance to Convert Video and Audio Files of 1000+ Formats Offline Using AI
1. Import MKV File
Click Add File to Start to upload your MKV file
2. Convert to MP4
Select MP4 as the input format and enter Convert to MP4.
3. Save MP4 File
Wait and tap on Download button to produce your MP4 file.
| File Extension | .mkv | .mp4 |
|---|---|---|
| File Type | Video File | Video File |
| Definition | MKV (also known as Matroska Video) is a container for videos, images, audio and subtitle tracks without limitations. It is mostly chosen for online videos because it supports files in high definition but also a relatively large size for storage. | MP4 Videos, which are also called MPEG-4 Part 14 Videos incorporate audio, videos, subtitles and more as a powerful container. It’s compatible with most devices and players at present. You can access a compressed file with easy digital distribution on various platforms. |
| Technical Details | Videos saved in Matroska enjoy wide currency in online media. Each component contained in MKV files adopts its own encoding but the video quality is still guaranteed in this format. Players for MKV can go through all the content in a single MKV file once you open it. | File in MP4 format is a lossy one with degraded quality after compression. The security may be weaker because it’s easier to remove metadata and distribute MP4 files without permission. And not all registered codecs in MP4 are supported now. |
| Supported Programs | Apple QuickTime Player Elmedia Player MKPlayerMovist | Apple QuickTime Player Microsoft Windows Media Player VLC Media Player KMPlayer |
| Developed by | Matroska | Moving Picture Experts Group |
| MIME Type | video/x-matroska | video/mp4 audio/mp4 |
| Useful Links | All details about MKV Files | Information about MP4 format |
ArkThinker MKV to MP4 Converter supports files without watermarks in the final version.
You can customize the output setting on encoder, resolution, bitrate and more of videos.
The simple and vivid interface with clear instructions will enhance your experience greatly.
How to crop my converted MP4 videos?
You can use ArkThinker Video Converter Ultimate to trim and crop your videos through simple steps.
1. Add your MKV files with Add File button.
2. Enter Trim icon and cut your MP4 videos to fit.
Can I Make GIF with my MKV files?
ArkThinker Video Converter Ultimate supports GIF making at a superfast speed to make GIFs with your MP4 videos.
1. Launch Toolbox tab and choose GIF Maker section.
2. Input your MP4 videos and select Loop Animation, Preview, Output Size and Frame Rate if you want.
3. Choose Generate GIF button and you can create a GIF for use.
How to create a 3D video from my MP4 files?
ArkThinker Video Converter Ultimate has introduced 3D Maker feature to meet your needs:
1. Enter Toolbox on the menu bar and search 3D Maker.
2. Add your MP4 file and adjust the settings on Anaglyph, Split Screen, Format, Quality and Depth
3. Press Generate 3D button to complete the process.
Is there any way to merge various videos together quickly?
Sure. And you can merge your multiple videos in ArkThinker Video Converter Ultimate with a few clicks.
1. Open ArkThinker Video Converter Ultimate and enter Toolbox.
2. Move your mouse and find Video Merger in the available channels for editing.
3. Add your files and choose the name, output format, audio track for your merged file. 4. Click Export and get your adjusted file.
How to Compress my MKV videos in good quality?
To compress your MKV videos without any quality loss, grasp the golden tool in ArkThinker Video Converter Ultimate with the following steps:
1. Launch ArkThinker Video Converter Ultimate and choose Toolboox.
2. Find Video Compressor among options in the list and import your MKV videos.
3, Go through the settings on the size, format, resolution and more. Change whatever you favor.
4. Click Compress to get your final result.
The greatest online platform I’ve ever used! Now it’s my favorite choice for online conversion.
I love the creative design and easy-to-use interface. That makes me more enjoyable when using it
Bravo! I love the conversion speed and it saves me great trouble worrying about the security and reliability.
Already a die-hard fan now. I hope more and more users could discover this magical online tool with your needs.
Thanks a million for no charge and trustworthy quality on my converted files. Always recommend it.
I bet nobody can refuse such a friendly program for uses at all levels and you are gonna love it!
Convert MKV to Other Files MKV Converter
Convert Other File to MP4 MP4 Converter
ArkThinker Video Converter Ultimate is a powerful and comprehensive software with multiple functions and services. You can access a quick and safe conversion within a few clicks without worrying about the quality loss on your videos and audio files. More than that, you are guaranteed editing functions including MV making, collaging, 3D effect, GIF in toolbox and more to enhance the output file. What are you waiting for?
| Function | MKV to MP4 Converter Online） | Pro Version |
|---|---|---|
| File number | 2 files/24 hours | No limit |
| File size | Less than 50MB | No limit |
| Batch processing | ||
| Advanced trimming | ||
| Video editing | Crop, rotate, add watermarks, add filters, adjust effects, etc. | |
| Other tools | Video Compressor, GIF Maker, Video Watermark Remover, Video Enhancer, etc. |
Step 1: Add Files and Choose Output Formats.
Launch ArkThinker Video Converter Ultimate on your computer and click the Add Files button to import your video/audio files. Then, you can pull down the box following Convert All to on the top right corner.
Here you can select the wanted format and customize your profile with the Gear icon. Feel free to adjust settings on both audio and video as you like.
Step 2: Edit Your Files with Multiple Sections.
If you would like to adjust your video or audio files with effective functions, enter Edit icon. In the pop-up window, you are guaranteed multiple choices on Rotate & Crop, Effect & Filter, Watermark, Audio and Subtitle for impressive results. Then click OK to save.
Step 3: Check and Complete the Conversion.
Choose a channel to save your converted files. You can combine multiple targets into one by clicking Merge into One box. Finally, tap on Convert All button to finish the process.
