codec for youtube Archives

Best YouTube Video Format: Codec

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The best format for Youtube videos is Codec. The Codec is the part of the software that deals with the encoding and decoding of the information that forms the audio or video stream. Newer codecs also take care of compression and decompression and therefore, while encoding and decoding the signal, they use mathematical algorithms that allow you to save storage space at the expense of quality.

codec

Compression

When playing video files, compression is done using mathematical functions that reduce the number of frames per second or lower the resolution of the pixels that make up the image. In audio files, compression is done by removing frequencies that are not completely perceptible to the human ear and the number of bits that make up the sound information.

codecs

Container

The best option for the extension is mp4. The frame rate must be the same as what you recorded and edited at. The most popular container formats are MKV or AVI.

codec

Video formats

Youtube uses the 1080p HD streaming format and MPEG-2 compatible with the DVD format and saved with an .MPG extension. If you cannot send the video in MPEG-2 format, please choose MPEG-4 format.

MPEG-2
Audio codec: MPEG Layer II and Dolby AC-3
Audio bit rate: 128Kbps or higher
MPEG-4
Video codec: H.264
Audio codec: AAC
Audio bit rate: 128Kbps or higher

Minimum audiovisual duration

The minimum duration is 33 seconds, excluding black and still images on the video channel, as well as silence and background noise on the audio channel.

Frame rates

videos should be at their native frame rate without resampling. For film originals, a 24 fps or 25 fps “progressive” master produces the best results. Typically frame rates are set to 24, 25, or 30 frames per second.

Resampling techniques are not recommended as they allow images to shake and often result in poor video quality. Examples: upsampling and transfer as “telecine pulldown”.

Dimensions

Videos must use native aspect ratios and uploaded videos must never include black “letterbox” and “pillarbox” bars. Youtube player uses frames that allow videos to be displayed correctly, without cropped or stretched images

Video resolution

For videos intended for sale and rental, you must provide a minimum resolution of 1920 x 1080 with a 16: 9 aspect ratio.
For free or ad content, YouTube does not require a minimum resolution, but recommends a resolution of at least 1280 x 720 for videos with a 16: 9 aspect ratio and a resolution of at least 640 x 480 for videos with an aspect ratio. of 4: 3.
If the videos are of lower quality, they are not visible to the public on YouTube and are used as a reference for Content ID. These videos are typically “quarter” resolution, ie 320 x 240. However, videos must be longer than 200 lines to produce effective references.

Bitrate

Bit rates depend on the codec. It is the number of bits per unit of time (attention! We are talking about bits and not bytes), generally measured in KiloBits per second. For the same format, the more information per second, the higher the quality or resolution of the movie or audio. Videos should be optimized for frame rate, aspect ratio, and resolution rather than bit rate.

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What is a codec?

What does codec stand for?

The word codec is a new word invented to display the encoding and decoding programs of video and MP3 files (remember that a file [reading error] is a series of numerical values that make up a text, a song or a video consists of data from a file, a card, etc. etc., which are stored and transferred on a computer, on the hard disk, on an SD card or a USB stick, on a smartphone and transmitted via the Internet, Bluetooth , WIFI). There are several CODECs because different techniques have been developed to process a video or audio file in order to save memory and transmission space (so-called memory byte allocation or GIGA …). Sometimes our computer may not be able to read a video that we receive, downloaded from the Internet, or recorded by the home video surveillance system. Here there is a need to install a suitable codec for reading the video.

Where do you download a codec? Where can I find the right codec for reading the video? Where can I download the audio codec?
To find out which codec we need, we turn to small special programs that examine the contents of the file and find out which codec was used to encode the file and consequently for subsequent reading. In our article: How to find out the format of a video or song (here), we illustrate this process.

To download the required codec, we can do a search on Google, Bing or another search engine or connect to one of the many websites where codecs are collected both individually and in packages.

The best-known codec collection on the Internet is the K-LITE codec package, which you can download from the well-known Italian website html.it.

The most popular audio codec is undoubtedly MP3, the result of mathematical and psychoacoustic studies that allow you to compress an audio track in its original format, saving a lot of space. The introduction of the MP3 codec revolutionized the music world on the PC (and later on the advanced audio devices), since on average 90% of the storage space and thus the transfer of a file was saved by audio. The format used in Windows was called .wav (remember that the period followed by three letters indicates a file extension to indicate to the programs / operating system what a file contains and to match the correct reader / processor).

The best-known video codec for the Windows world was .avi (Interleaved Audio – Video).

What are audio and video codecs?

Codecs are software or hardware devices that digitally encode and decode (compress) an analog signal.

It will happen to you that at least once in your life you cannot play a video file like a movie or a piece of music and wonder what the reason for this obstacle is. The bug in the above cases is the program for watching movies and listening to music: it does not have the required codecs.

Audio and video codecs are key elements for the proper functioning of a computer system, even if they are not known to the public. Without a suitable codec, however, computers (or smartphones and video game consoles and even decoders that watch TV at home) would not be able to play music or display pictures from a film. Our ability to relax and watch a movie or listen to the music of our favorite actor or singer depends on the codecs.

What are audio and video codecs?

An acronym for encoder / decoder is a codec or software device that converts an analog signal such as the sound wave of a song into a digital data stream. This way, your computer or other computing device can easily play photos, videos and songs. Codecs are also used to reduce the size of audio and video files that result from analog-to-digital conversion. Without compression technology, digital files would be huge and difficult to manage from computers and smartphones.

Two compression techniques

There are two compression techniques: loss and loss. The first system is lossless and the second is lossless. Let’s take another example. Let’s say we want to insert analog video with lossy compression: we have a small file, but not exactly good audio and video quality. If we choose the second technique (no loss), the file is “heavier”, but has a higher audio and video resolution.

The best quality

Compression removes some of the elements that make up the video. Lossy compression codecs remove more data than lossless compression codecs. In recent years we have been working to optimize the quality of compression. For example, the new HEVC standard (High Efficiency Video Coding), also called H.265, offers a better ratio of quality to compression. In practice, unlike the old H.264 codec, you can compress more without sacrificing audio and video quality.