Fastest Video Converter and Compressor in the market that supports almost all video formats: MP4, MKV, AVI, 3GP, MOV, MTS, MPEG, MPG, WMV, M4V, VOB, FLV etc. This converter & compressor supports converting, compressing and changing resolution, Frame rate(FPS), audio bitrate of a video file. Free Video DVD Converter Ultimate is a free MKV compressor for Windows that allows you to convert video/DVD to AVI, WMV, MPG, MOV, MKV, etc. Meanwhile, it provides similar video editing function as iMedia Converter for Mac, such as trimming, cropping, splitting to help you compress big MKV file to smaller one. Drag multiple video files to the 'Choose Files' section. Each video file size can be up to 200 MB. This video compressor supports many video formats such as MP4, WEBM, MOV, MKV, WMV, AVI, FLV, M4V, MPG, M2TS, ASF, RM, VOB or OGV etc. The batch compression automatically starts when files are uploaded. Compress Video This video compressor can compress various video files and reduce video file size, such as MP4, AVI, FLV, MOV, 3GP, MKV, WMV and more, help you to save disk space and network bandwidth for easy storage, transfer and sharing. The output format is the most popular MP4 video. Requirements: 5.0 and upOverview: Video Compressor - Compact Video application can compress and convert almost any format of videos This Video Compressor can compress an uncompressed video without losing quality using X264 and X265(HEVC) codec. It can also compress a compressed video by decreasing the quality which is Resolution Bitrate.
MKV is the shortened version of Matroska Video. It gathers multiple types of files, including subtitles files, audio tracks, multiple video tracks, etc. to one file. That is to say, MKV video is usually in much larger file size. And due to its large file size, we may meet some troubles when uploading MKV to certain vidoe sharing sites, and plan to store more MKV movies on our storage device. Sometimes, we even find the screen resolution of our devices do not support the playback of large resolution file size of MKV. So is there any free ways to compress big MKV file to smaller size? Yes, of course there is. Just follow the tutorial below to compress big MKV files with no quality loss.
Part 1: Parameters that affect MKV file size
Before compress big MKV file, we need to learn these video parameters that affect video file size, which will help us make sense of the options we have while compressing MKV.
Codec: This is a method that computer uses to decide on the amount of change that occurs between frames.
Keyframe: This is a reference frame. Z zip android. The codec will determine a keyframe every few frames. This is the base frame for the next few frames of change. Your keyframe interval will have a large impact on the size of your MKV file. Lots of keyframes will make the file large but higher quality. Infrequent keyframes will leave lots of artifacts.
Artifacts: These are blocky pieces of image that are the result of the keyframe not being updated correctly. The lower the quality of the compression, the more artifacts that will appear.
Bit/data rate: This is the amount of data that each second of video uses. Typically, this is measured in kilobits per second. Bit rates can be either Constant or Variable. A constant bit rate stays the same throughout the video, which can lead to larger video files. A variable bit rate changes depending on the amount of action on the screen, which will lead to smaller files.
Mkv Video Compressor Portable
Frame rate: this is the number of frames per second. Videos are typically shot in 24 or 30 frames per second. Keep the compressed copy's frame rate the same otherwise playback will be affected and audio may not sync properly.
Resolution: This is the size of the outputted video. It is measured in pixels, width x height.
Part 2: How to Compress MKV Files on Mac/Windows?
After comprehending these video parameters that affect MKV file size, let's start compress big MKV file to smaller one. As I know, there are mainly two methods to compress MKV video file size:
Method one: Compress MKV by converting MKV to H.264 MP4With same video quality, MKV file size is much larger than H.264 MP4. To shrink MKV without quality loss, we can convert MKV to H.264 MP4.
Method two: Shrink MKV by adjusting MKV video bit rate, resolution, frame rate, etc.This method helps to shrink MKV files to achieve a good balance between quality and file size.
To successfully compress big MKV, you can choose method one to change video format, or use the second method to shrink MKV file size. You can also utilize the two methods at the same time to compress video file size.
Then, here comes the question: how to convert MKV to MP4 and how to adjust MKV parameters? Here I highly recommend iMedia Converter for Mac, which is a easy-to-use video converter and compressor for Mac users (support macOS 10.13, macOS Sierra, Mac OS X 10.11 El Capitan, etc). It is capable of converting and compressing 4K/ UHD/1080p large video file like H.265, MKV, XAVC S, MXF, MTS, M2TS, AVCHD, etc. to small file size in the file format of MP4 with H.264 codec. Futhermore, this MKV compressor also provides video editing functions for you to reduce video file size, such as cut out unwanted segments, lower the file resolution or bit rate of the output video, etc.Apart from compressing common video file, this program also gives you a chance to compress Blu-ray or DVD to your desired file format or device preset profile formats. Here is an equivalent version for Windows: Pavtube Video Converter Ultimate.
How to compress MKV with iMedia Converter for Mac?
Step 1: Load MKV files to the video compressorClick 'File' drop-down option, then select 'Add Video/Audio' or 'Add from folder' to select the MKV file you want to compress.
Step 2: Define output file format
You can output your MKV video to MP4 format, which is highly compressed with H.264 codec. It is a small video format that has perfect compatibility with many portable devices and media players. Just click on 'Format' bar, go to 'Common Video', then select 'H.264 Video(*.mp4). If your device support H.265 codec, you can also compress MKV to H.265 MP4.
Step 3: Adjust output profile parameters
1. Click 'Settings' button behind Format bar, to open 'Profile Settings' window. You can change output video resolution to 640 x 480, which is more preferable by many portable devices such as iPhone, iPad, Android phone and tablet, etc and video sharing sites like YouTube, Facebook and Vimeo.
2. Lower the bit rate 20-50% of the default to get small files.
3. Trim video file size. Click the 'Edit' icon on the UI to open 'Video Editor' window. You can cut off the unwanted parts from a long video to short ones by setting the start time and ending time.
Step 4: Compress MKV file sizeHit on the right-bottom 'Convert' button to start compress MKV to smaller video file. After a few minutes, you will get your compressed video with small file size.
Part 3: Optional Free ways to Compress MKV Videos
HandBrake for Mac is a totally free software to compress MKV to MP4 on Mac. But the interface the program is a little complicated. Besides, it only support MP4 and MKV as output container, and the MP4 compression settings is not so multiple.
Compress MKV with Handbrake
1. Launch Handbrake, click the 'Source' button to browse and select the large MKV file you desire to compress.
2. Specify a preset for your output profile. Handbrake offers 9 option under the Devices presets including Universal, iPad, iPod, iPhone & iPod touch, Apple TV, etc. Choose one according to your own preference. You can also directly click Format bar to choose MP4 as output format.
3. Android studio deploy to device. Click 'Browse' and choose the location for your destination. Give your new file a fitting name, and click 'Save'.
Although Handbrake has gained great popularity as a beneficial MKV compressor. However, when people use Handbrake to shrink MKV video, they still encounter many errors such as no valid source found, video/audio out of syncing or other unexpected issues. If you are facing the same issue mentioned above and find no proper way to fix them effectively, you can try a Hanbrake compressor alternative.
2. Free Video DVD Converter UltimateFree Video DVD Converter Ultimate is a free MKV compressor for Windows that allows you to convert video/DVD to AVI, WMV, MPG, MOV, MKV, etc. Meanwhile, it provides similar video editing function as iMedia Converter for Mac, such as trimming, cropping, splitting to help you compress big MKV file to smaller one. Its interface and operation steps is similar to iMedia Converter for Mac and users even can quickly find the options they need without guide. However, this free version can't support MP4 output, if you need convert MKV to MP4, you can just upgrade it or use Pavtube Video Converter Ultimate.
Part 4: Best MKV Compression Settings for Youtube, Vimeo, Facebook & Instagram
If you want to compress MKV videos for Youtube, Vimeo, Facebook & Instagram, just follow the table to choose the settings.
| Best MKV Compression Settings | Youtube | Vimeo | ||
| Container | MP4 | MP4 | MP4/ MOV | MP4 |
| Codec | H.264 | H.264 | H.264 | H.264 |
| Frame rate | The same as the original video | 24, 25, or 30 FPS | 25-30 fps | 29.96 fps |
| Bit rate | 1000 kbps (360p), 2500 kbps (480p), 5000kbps (720p), 8000kbps (1080p), 10Mbps (1440p), 35-35kbps (2160p) | 2,000 kbit/s for standard definition (SD) video; 5,000 kbit/s for 720p HD video; or 10,000 kbit/s for 1080p HD video. | There is no recommendation for Bitrate as it highly rests upon codec | 3,500 kbps |
| Resolutions | 426x240 (240p), 640x360 (360p), 854x480 (480p), 1280x720 (720p), 1920x1080 (1080p), 2560x1440 (1440p), 3840x2160 (2160P) | SD video include 640 x 480 px (4:3 aspect ratio) and 640 x 360 px (16:9 aspect ratio). HD video is usually formatted at 720p (1280 x 720 px) or 1080p (1920 x 1080 px). | 1280px | maximum width 1080 pixels (any height) |
| Audio codec | AAC-LC | AAC-LC | AAC | AAC audio codec at 44.1 kHz mono |
| Audio bitrates | Mono (128 kbps), Stereo (384 kbps), 5.1 (512 kbps) | 128 kbps | There is no recommendation for Audio Bitrate as it highly rests upon codec | 5,500 kbps video bitrate (although Instagram may reduce this to 3,500kbps when we post it) |
4K resolution, also known as 4K, is one of the trendy tags coming into people's sight in recent years. It's a newly-emerging resolution standard for Ultra HD, which provides with the ultimate visual experience. You can find many 4K recorded videos uploaded by users, the new movie Trailer like Jurassic World 2, and kinds of pop music videos on YouTube and other video-sharing sites. With the growing demand of the public, as well as the extraordinary advantage of better watching experience, 4K and above like 8K will definitely become the mainstream standard for digital video in the next couple of years.
Why We Need to Compress 4K Video to 1080P, 720P, 480P?
HandBrake for Mac is a totally free software to compress MKV to MP4 on Mac. But the interface the program is a little complicated. Besides, it only support MP4 and MKV as output container, and the MP4 compression settings is not so multiple.
Compress MKV with Handbrake
1. Launch Handbrake, click the 'Source' button to browse and select the large MKV file you desire to compress.
2. Specify a preset for your output profile. Handbrake offers 9 option under the Devices presets including Universal, iPad, iPod, iPhone & iPod touch, Apple TV, etc. Choose one according to your own preference. You can also directly click Format bar to choose MP4 as output format.
3. Android studio deploy to device. Click 'Browse' and choose the location for your destination. Give your new file a fitting name, and click 'Save'.
Although Handbrake has gained great popularity as a beneficial MKV compressor. However, when people use Handbrake to shrink MKV video, they still encounter many errors such as no valid source found, video/audio out of syncing or other unexpected issues. If you are facing the same issue mentioned above and find no proper way to fix them effectively, you can try a Hanbrake compressor alternative.
2. Free Video DVD Converter UltimateFree Video DVD Converter Ultimate is a free MKV compressor for Windows that allows you to convert video/DVD to AVI, WMV, MPG, MOV, MKV, etc. Meanwhile, it provides similar video editing function as iMedia Converter for Mac, such as trimming, cropping, splitting to help you compress big MKV file to smaller one. Its interface and operation steps is similar to iMedia Converter for Mac and users even can quickly find the options they need without guide. However, this free version can't support MP4 output, if you need convert MKV to MP4, you can just upgrade it or use Pavtube Video Converter Ultimate.
Part 4: Best MKV Compression Settings for Youtube, Vimeo, Facebook & Instagram
If you want to compress MKV videos for Youtube, Vimeo, Facebook & Instagram, just follow the table to choose the settings.
| Best MKV Compression Settings | Youtube | Vimeo | ||
| Container | MP4 | MP4 | MP4/ MOV | MP4 |
| Codec | H.264 | H.264 | H.264 | H.264 |
| Frame rate | The same as the original video | 24, 25, or 30 FPS | 25-30 fps | 29.96 fps |
| Bit rate | 1000 kbps (360p), 2500 kbps (480p), 5000kbps (720p), 8000kbps (1080p), 10Mbps (1440p), 35-35kbps (2160p) | 2,000 kbit/s for standard definition (SD) video; 5,000 kbit/s for 720p HD video; or 10,000 kbit/s for 1080p HD video. | There is no recommendation for Bitrate as it highly rests upon codec | 3,500 kbps |
| Resolutions | 426x240 (240p), 640x360 (360p), 854x480 (480p), 1280x720 (720p), 1920x1080 (1080p), 2560x1440 (1440p), 3840x2160 (2160P) | SD video include 640 x 480 px (4:3 aspect ratio) and 640 x 360 px (16:9 aspect ratio). HD video is usually formatted at 720p (1280 x 720 px) or 1080p (1920 x 1080 px). | 1280px | maximum width 1080 pixels (any height) |
| Audio codec | AAC-LC | AAC-LC | AAC | AAC audio codec at 44.1 kHz mono |
| Audio bitrates | Mono (128 kbps), Stereo (384 kbps), 5.1 (512 kbps) | 128 kbps | There is no recommendation for Audio Bitrate as it highly rests upon codec | 5,500 kbps video bitrate (although Instagram may reduce this to 3,500kbps when we post it) |
4K resolution, also known as 4K, is one of the trendy tags coming into people's sight in recent years. It's a newly-emerging resolution standard for Ultra HD, which provides with the ultimate visual experience. You can find many 4K recorded videos uploaded by users, the new movie Trailer like Jurassic World 2, and kinds of pop music videos on YouTube and other video-sharing sites. With the growing demand of the public, as well as the extraordinary advantage of better watching experience, 4K and above like 8K will definitely become the mainstream standard for digital video in the next couple of years.
Why We Need to Compress 4K Video to 1080P, 720P, 480P?
Limited by many realistic factors (like storage, devices, Internet technology and etc.), 4K video is still such hot potato nowadays. For example, if you happen to get a hot 4K video on the web, it will be a problem for you to free up some storage space on your hard drive or play it on your smartphone. Normally an original 4K movie might be bigger than 200 GB, that is to say, you can keep 10 copies of 4K resolution movies on your 2TB hard drive at most. Also, you may meet other problems as follows:
Q: I shot a two-hour 4K video with my camcorder. And the output size is very large, about 400G. How could I compress the video? Is there a smart way to keep original quality?
Q: I recorded a video in 4K. And when I opened the video editor , it can't import the file. Any advice? Please just tell me how to convert 4k to 1080p or how to compress 4K to 1080p?
With no doubt, it is a stunning experience to enjoy the visual feast of the 4K video! Considering the conflict between the lagging device support and the rapid development of 4K technology, 4K videos cannot be played well on a majority of mainstream devices, including iPhone and other Android smartphones. And let alone, storage space on the device is that precious. So if you've got a 4K movie video and want to transfer it to the portable device, a 4K video compression would be more beneficial and less stressful for the smooth playback.
How to Compress 4K Video to 1080P or Slower Resolution in the Best Quality?
Bit rate, encoder, resolution, they are the DNA of a video file. The interaction of all of these factors plays as a joint result of video quality. So we can compress 4K video by optimizing its DNA. Here, we can make it easy with this 4k video to 1080p converter that is specialized in HD video solution - HD Video Converter Factory Pro, which can be used as the best video compression program. Perfect image quality and super-fast conversion speed to provide you with the best service. Free download the 4K video compressor and follow the guide below to learn how to downscale 4K to 1080P.
Hot Search: Transfer DVD to Galaxy Note 4 | Rip DVD to iPad mini 3| DVD to iPad Air 2 | Backup DVD to Hard Drive Call of the wold.
Three simple and effective solutions to optimize & compress 4K video:
Preparation: Free download the high definition video compressor and launch it.
You can regulate the video resolution by dragging the slider to 1080P as shown in the picture on the right.
The 4K video file is huge in size, and you can optimize it for your device by changing video resolution to 1080P full HD. After the fast video compression process, you can get the acceptable file size and the output video can be played on portable devices perfectly as the converter preset ideal parameters for you.
Video Compressor
Generally speaking, most 4K videos are in H.264, the widely-used encoder currently. H.264 is very steady but with low compression ratio. Then, here comes H.265 as its successor. H.265 (also called HEVC) is a new advanced HD video encoder, which can make a video file smaller but better quality compared with H.264. It's a good way to compress 4K video by optimizing the video encoder and reduce video size without quality loss but keep its high definition.
You just need to choose H.265 for MP4 in the Output Format Box as your option and then click 'Run' button to start the process.
Optimize 4k video with h.265
After the optimization, you will get an advanced smaller video file in the same bitrate and resolution. It can not only keep the original frame rate but also the quality of video. You can tell us whether you are satisfied with the 4K compression result with H.265 in the discussion below.
It's the third way to cut down the video size. You can define the bitrate according to your needs, but do remember it will lower the video quality by reducing the video bitrate.
In the 'Parameter settings' window, you can choose the output bitrate as you wish. In order to keep your video in good quality, we don't recommend reducing the bitrate too much.
Reduce 4k video bit rate
These are the common and simple ways to compress the 4K video files. You can take the method you like. Except for 4K video compression, the powerful HD Video Converter Factory Pro can do more, for instance, you can download 4K resources and download VR video from YouTube and here's a simple guide: Click 'Download Video' and paste the video .url into the 'ADD URL' box.>>Click 'Analyze' and choose a certain resolution.>>Press 'Download'. Besides downloading from 300+ sites, this program is also capable of converting video to HTML5 formats then you can upload the video to the internet without hassle.
To boot, you can edit your 4K video with simple clicks, cut video clips and add special effects and more. The program also supports batch video conversion, SD to HD video conversion, and you can use it to convert video to 4K video format with a few steps. With this multi-functional program, you can get better video viewing experience easily. Feel free to download it on your Windows computers.
Extra Tip for You
Mkv Video Compressor Software
The video compressor provides optimal parameters in advance for many 4K devices. Which means you are able to stream the 4K videos you downloaded from the internet to your 4K TVs even you don't know the best video and audio specs for your device, you are supported to simply choose a device model it offers.
More Special Features on HD Video Converter Factory Pro
Mkv Video Compression
- Can convert between standard video and high-definition video(8K/4K/1080P/720P/480P) with high quality
- Batch compress video files with smaller output size to free up storage space on device
- Support 500+ output formats and devices, including H265, VP9, 4K, FLAC, ALAC, OGV, DTS, Projector
- Download video of different resolutions from the internet
- Batch convert video files to save a lot of time
- Offer a built-in video editor to crop, split, merge and retouch video and boost volume
