Tag: how does video formats work

WHAT IS THE BEST WEB VIDEO FORMAT?


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mp4, mov, mkv, avi, mpeg … Formats, containers and codecs how to choose? Is there a video format that is compatible with all browsers and on all media? And if it exists, what is it? The answer is in this article.

video container

All these questions we asked ourselves at the beginning of our activity in Kalyzée. First, the issue of the best format seemed rather complicated to us as it had to take into account distribution mode (transmission, pseudo-transmission), browser compatibility (Chrome, Firefox, Safari, Opera, Internet Explorer) with its various versions and navigation support (desktop) , tablet and mobile computers).

video containers

The competition between Apple, Google, Microsoft and Adobe, all the major players in the choice of video formats, does not help at all; everyone is trying to pull the rug to himself. We all remember Steve Jobs’ resounding choice, in April 2010, to stop using flash (Adobe) on iPhone, iPod touch and iPad. A brave (not to say bloated) decision with a Flash present on 99% of desktops!

WHAT IS DIGITAL VIDEO?

A digital video is a file that contains images, audio and text (metadata) placed in a container. In this container, images, audio and text are compressed because the transmission network infrastructure cannot support the load of built-in audio-visual transmissions. We can say that digital video files are audiovisual zip files. Compression and decompression of these files are done using codecs.

The container is a file format that contains audio and video streams, codec information and metadata.
A codec (acronym coding-decode) is an algorithm for compressing / decompressing a digital audio-visual signal.

CONTAINER AND VIDEO FORMAT

The format of a video file is specified with the name of its container (MP4, MOV, AVI, FLV, MKV, ASF, etc.). There are about twenty containers, the most important of which are listed below. These containers have been developed over time by various companies and communities to adapt to technological developments. A container can enclose several audio and video tracks. Metadata can be: title, abstract, keywords, credits, chapters, subtitles, etc.


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What types of formats exist in digital video?

What types of formats exist in digital video?

Who has not ever wondered what H264 means or what is an Mp4, Mkv or Avi file. These are some of the questions that we all ask ourselves when we are talking about digital video in some of the applications that we see online to find out which format or format has more quality or how I can convert a file to another file.

What in my measure can contribute is to shed light on the distinctions that exist when we talk about video formats within the different types that are applied to digital video and that there are three important parts to distinguish between them on the Internet or on a DVD:

The video and its codec (As the video has so much weight, it must always be encoded and subsequently decoded). They are simply mathematical algorithms to compress and decompress the video file.
Audio and its different formats or containers.
The file that contains the audio and the video. The container
Let’s go to see which are the most popular and try to explain them:

Digital Video Formats

MPEG: Moving Pictures Expert Group (Mpeg1, Mpeg2, Mp4 or Mpeg4)
AVI: It is the standard format but the one with the most weight. (Xvid or Divx)
WINDOWS MEDIA: Format developed by Microsoft. (. Mp4 or .asf)
MOV: Format developed by Apple. Quicktime required to read it. Low weight.Ideal for Web (.m4v or .mov)
FLV: Adobe Flash format. Use Sorensen Spark codec. (.flv)
Digital Audio Formats

Mp3 or MPEG-1 Audio Layer 3: Tablet with imperceptible signal loss for humans. (1Mb / Min)
Aiff: Audio Interchange File Format. It has no compression and uses PCM modulation so they are very heavy (10 Mb / Min.)
AAC: Advanced Audio Coding. Mpeg-2 compression. Indicated for surround or surround sounds
Windows Media Audio: The worst quality of all the previous ones, is the Windows format.
Digital Video and Audio Container Formats

.mp4
.mov
.avi
.mkv
.flv
.swf
.m4v

The truth is that it is a whole world and more when the big companies live thinking only about leading their own markets and not from the point of view of the user whom they have had abandoned for years. Obviously these are not all there are but I have wanted to include the best known.

But if we are talking about a file or files that any dvd may have or downloaded from the Internet in any format or container such as Mp4, mkv, avi with greater or lesser quality, it must be remembered that what is important is the amount of information that they contain, is say the Mbs this video is exported to.

It is as if we have a 16 ton truck and we put a box of oranges inside it when it can carry 1000 boxes of oranges. what we are going to see is oranges but with a very low quality.

I hope I have shed some light on this world of digital video and how the next time you face such a file you will be able to understand what each of the things attached to it means. I have to admit that it is not easy, but with that global vision and knowing what each one means, you feel better when facing it.