For example, there may be an mkv version of a particular video that has a resolution of x , that is 7. I would assume that the mkv file is of better quality, being as it has a larger file size, even though both files are of the same screen resolution. Is this correct, or are the two files of the same quality?
On a related note Is the generally larger file size of mkv files due to something else? In other words, do mkv files and mp4 files use basically the same compression level, but mkv files are bigger for some other reason? Thanks in advance. Both mp4 and mkv are "container" formats.
The next thing to check is the video bitrate; this is a measure of the amount of data that is used to encode each frame of video.
Given the same framesize resolution and duration, videos with a higher bitrate will tend to take up more space and generally but not always give higher quality.
Use MediaInfo or GSpot to get the above info. Slainte midders. Hello Midders. Thanks for your response. So I gather from what you are saying, that, as with audio files, one of the key factors affecting the size and quality of a video file is the actual bitrate. Thus, while two video files may have the same resolution, the one with a high bitrate will more than likely be of better quality, correct?
Video bitrate is the other large factor. While it is a fair supposition to make regarding the larger file probably having higher quality, there are a number of factors that come into play when encoding that could mean the difference is not as large as you might think the type of content being encoded , or factors with playback that mean the difference in quality is not as apparent lower quality TV or upscaler etc.
So the actual difference will vary from file to file, and the difference it makes to the end viewer will be very subjective. Read my blog here. Hello guns1inger, Thanks for the additional info. So it appears that this issue is a bit more complicated than what appears on the surface, and that video bitrate, audio bitrate, and other factors, all contribute to the overall size and quality of a file.
With that in mind, I just downloaded the MediaInfo program that is recommended on this site. I think comparing files, and looking at the actual numbers, will help me to better grasp how this all works. That is nice and funny because MKV is a container format. It encapsulates multiple media formats together like the Russian dolls.
The MKV video format has the powerful ability to store an interminable amount of video, audio, image, subtitle media format into one single file, such as FLAC audio format and ASS subtitle format. What is MP4? It is featured by the mixing function of merging various digital streams into one file easily. From this part, the most important message we know is that MP4 and MKV are both container format, but not media format. Although two files both can be suffixed with. This explains why some players cannot play videos in the same container format.
As the industry standard, MP4 has better compatibility than MKV in video editing software and playback devices. When uploading video to YouTube , MP4 is a suitable format. That's also why the videos optimized for mobile devices basically choose MP4 for encapsulation.
It's part of the Moving Picture Experts Group's standards for audio and video files. Version 1 came out in , and Version 2 in The term is sometimes loosely used for other parts of the MPEG-4 standard.
It's based on Apple's QuickTime format, without a lot of changes. Many codecs are officially registered for MP4, and others can be used privately. However, most implementations support only a few of them. The most widely supported are H. Other codecs can be downloaded and added to the software. The container accepts other media besides video, including audio and still images. MP4 audio can use various encodings, including AAC. MP4 files can incorporate DRM digital rights management.
This effectively means encrypting the content. No single DRM method is used everywhere, so several versions will be necessary to reach the widest audience.
Converting DRM-protected video is difficult or impossible. The MP4 specifications are available to the public. Some aspects are covered by software patents, but no one is currently requiring license fees.
Distributing software for H. A detailed article about the MP4 file format. Some of its workings are patented. The Matroska container is based on an open specification. Nothing in it is known to be patented. It's unlikely any patent claims on it will arise now, almost two decades after its introduction. No license is required to distribute MP4 files. However, a license may be required to create and distribute software to create the files.
There are no licensing requirements for software that creates or modifies MKV files. As a result, open-source software is more widely available for MKV. The Matroska group provides a free software library, and others are available. Like MP4, Matroska can hold video, audio, and other content types. Files with video content use the extension,. The container format is the same in all cases. In addition, a file can have attachments in any format. Matroska has a general encryption capability that can be used for DRM.
The MKV container uses a block-oriented structure, and blocks are individually encrypted. This means that software can discern the structure of a DRM-protected file and perform some operations on it. Matroska MKV is designed to do almost anything, so it's rather complicated.
The most important restriction is in the allowed video codecs. Support in current browsers for WebM is about as widespread as support for MP4, but older versions may not support WebM. There's no clear winner. Each format is better for some use cases, not quite as good for others. MP4 is more widely supported for playing video on a browser, and it has less file overhead.
Comparing the MP4 vs. MKV quality, we should take into account the codecs used. MKV supports more codecs, so it makes more options available. You need to make sure, though, that a reliable codec is available for the software you're using. The software you have for creating videos may dictate the format you initially create. However, you may be able to get an add-on to have it create files in your preferred format. Alternatively, you can convert the file after creating it or perform video compression.
If you're going to distribute the video, there are advantages to having it in multiple formats. Movavi Video Converter will make it easy for you to move videos from one format to the other. Ben is a writer from the UK with qualifications in Media and Music Technology, he specialises in software reviews and tutorials. Ben has been blogging about media and tech subjects since he was a teenager from his base in the East of England.
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