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Detailed explanation of bit rates for video and music files Part 2

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What is a bit rate?

Detailed explanation of bit rates for video and music files Part 2

Bitrate

How to check the bit rate
You can check the bit rate by looking at the detailed information of video files and music files on both Windows and Mac.

BitRate

How to check bitrate in Windows 10
Click Properties on the context menu of the video or audio file for which you want to check the bit rate.

Video file properties
The properties window will open, so click the Details tab. The bitrate purification method is shown on the video and audio items.

In Windows 10 video file properties, you can see three bit rates. Check the red frame in the figure above.

Data rate is the bit rate of the video data.
Total bit rate is the bit rate of the video file, including video data and audio data.
The bit rate of the audio elements is the bit rate of the audio data, isn’t it?
Video file bit rate
As you can see from the image above, the video file contains both video data and audio data, so there is a bit rate for each of the video data and audio data.

How to check the bitrate on your Mac
Open the video file in QuickTime.

On the QuickTime menu, click Window> Show Movie Inspector.

Mac Video File Inspector
The inspector is displayed. The item called data rate is the bit rate of the video file.

Image quality comparison due to bit rate differences
Bit rate comparison, original image
This image was exported from the video data.

With this video data, we prepare a video data set with a high bit rate and a low bit rate.

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Detailed explanation of bit rates for video and music files

What is a bit rate?

Detailed explanation of bit rates for video and music files

Bitrate

What is a bit rate?

Bitrate

Bitrate is an unavoidable experience in video editing and music production.

The word bit rate sounds a bit complicated, but of course, video and audio files. It is also often found in various situations, such as mobile phones and internet lines.

What is the bit rate? It’s surprisingly useful to remember it sensually, so remember it.

I think the person who visited this page is a beginner asking “What is bitrate?” So I hope I can explain it in the easiest and simplest way possible.

Bit rate basics
To briefly explain the bit rate, it refers to the amount of data per second for communication, such as video files, music files, and the Internet.

The so-called reproduction and communication are data streams. This stream uses a unit called bps (bit per second) to indicate how many bits flow in one second (per second).

I think it is easy to understand if you can imagine the road that a car passes by. The car is the data and the data stream is the road.

Taking into account that a road with many cars carries many people and luggage, it can be said that a lot of data (information) flows. This is called high bit rate.

On the contrary, if there are few cars in motion, it can be said that little data (information) flows. This is called a low bit rate.

Image of many cars on the road.
A state in which the amount of data is large and the bit rate of the stream is high

Image that there are not many cars on the road.
A state in which the amount of data is small and the bit rate is low

Should the bit rate be high?
A high bit rate means a lot of information. If there is a lot of information, it sounds great, like high image quality for videos and high sound quality for music, but it has a big disadvantage.

The disadvantage of a high bit rate is that it increases the data capacity of a single file. If the data capacity is too large, it can take time to send someone or move data between hard drives, making it difficult to manage.

Therefore, the codec was developed to reduce data capacity while maintaining high image quality and high sound quality. I’ll talk about codecs another time, but it is necessary to set the bitrate keeping in mind the balance between image quality, sound quality and file capacity so that the data capacity is easy to handle.

What is the standard bitrate for smartphone videos? Part 3

Smartphone

Estimated audio bit rate
In the case of audio bit rate, “128 kbps” is basically a guide.

Smartphone bit rate

Generally, for lossy codecs like MP3, AAC, WMA, AC3, Vorbis, a voice bit rate of around 128 kbps is sufficient. On the other hand, if the video is geared towards sound quality, it should be around “192-320kbps”.

Three Points to Consider When Considering the Bitrate of Smartphone Videos

There are a few things to keep in mind when considering the bitrate of your smartphone video.

When creating a video, you should use the appropriate bitrate for factors like size, but when considering bitrate, you need to keep three points in mind.

Here, we will introduce three points to keep in mind when considering the bitrate of smartphone videos, so why not refer to what kind of points to keep in mind?

Bit rate notes 1: The numbers are just a guide.
The proper bitrate for smartphone videos is just a guide.

The bitrate of a video involves multiple factors, not just the size of the image. For example, if you want to save a video with a lot of movement in high quality and a video with little movement that you want to save in medium quality, the appropriate bit rate will be different even if the image size is the same.

So, consider the bitrate you need as a guide only.

Bit rate note 2: consider the resolution according to your purpose
Let’s decide the optimal resolution according to the purpose of the smartphone video.

Even if you call it a smartphone video, it does not mean that a video with almost no motion and a video with high motion should have the same resolution. It is important to select the one that suits your purpose, such as high resolution for videos showing precise movements and low resolution for videos with little movement.

Therefore, when considering the resolution of a video, consider what the video is about.

For seminar videos
Since the seminar video is almost motionless, no high resolution is required.

The seminars and training videos aren’t particularly poignant videos, so lower resolutions won’t be a problem. For example, there is not a big difference between a low image quality of about 300 kbps and a high image quality of about 1500 Kbps, so it is recommended to make a light and low quality video.

For promotional videos
For promotional videos, it is a good idea to have a certain resolution.

It is not attractive that the resolution is low and that the video does not look beautiful in the video for internal promotion. However, it depends on the content of the video itself, so if you are not sure about the resolution, it is recommended to prepare a higher resolution and a slightly lower resolution and compare them.

For sports videos
High resolution is best for sports videos.

The bit rate has the characteristic that it is required since the difference with the previous frame is greater, and it is necessary to set it higher for videos with a lot of movement.

Therefore, if the resolution of the sports video is low, the outline will be broken and the color will fade, resulting in a stressful video.

Bit rate note 3: consider file size
The higher the bit rate, the larger the file size.

Of course, it depends on the content of the video, but as the bitrate increases, so does the file size, so this needs to be taken into account.

What is the standard bitrate for smartphone videos? Part 2

smartphone bit rate

Video Terms to Remember 1: Resolution
Resolution is the number of vertical and horizontal pixels in a video.

Smartphone BITRATE

The higher the resolution, the better the image will look. For example, if you prepare the same image with the same resolution of “640 x 360” and “2560 x 1440”, the latter will be clearer in detail.

Also, both the resolution and the pixel refer to vertical and horizontal pixels, but in the case of the number of pixels, it is expressed by the total number, so if the resolution is “1980 x 1080”, the number of pixels will be “2,138,400”.

Video term 2: frame rate to remember
Frame rate is the number of still images per second of video.

The frame rate unit is “FPS (Frames Per Second)”. Since a video is made up of a collection of continuous still images, the higher the frame rate, the smoother the video. However, the amount of data will increase accordingly.

Therefore, it is important to set the frame rate to the appropriate size according to the purpose of the video.

Video Term 3: Codec to Remember
A codec is a codec that compresses and decompresses audio and video data.

The larger the size of the video, the greater the amount of data, and the higher the quality, the larger the file size. Therefore, it is necessary to compress the data with a codec.

For example, there are types such as “MPEG-4” and “MPEG-2” for video codecs and “MP3”, “AAC” and “FLAC” for audio codecs.

Estimated bit rate suitable for smartphone videos

For smartphone videos, the standard bit rate is “300 kbps” or “600 kbps”.

Taking as an example the frame size that is often used for inline distribution, if the frame size is 480 x 270 px, 360 x 270 px, the bit rate is “300 kbps” and if the frame size is 640 x 360 px, 480 x 360 px, the bit rate is “600 kbps” will be a guide.

What is the standard bitrate for smartphone videos?

Bitrate

In this article, we’ll give you an overview of bit rates, guidelines for suitable bit rates for smartphone videos, and points to keep in mind when considering bit rates for smartphone videos, so check them out.

smartphone bit rate

What is the important bitrate for smartphone videos?
Bit rate is a term that refers to the amount of data per second.

The amount of data that can be sent and received in one second, and the unit is “bps (bit per second)”. For example, at 1 bps, 1 bit of data can be sent and received per second, and the higher the bit rate, the more data can be transferred.

Therefore, when making smartphone videos, it is necessary to consider the bit rate that viewers can comfortably watch.

Relationship to screen size
The larger the screen size, the greater the amount of data required and, conversely, the smaller the screen size, the less the amount of data.

Therefore, there is a reference bit rate for each screen size. If the screen size is 480 x 360, the bit rate is 500 to 700 Kbps, if it is HD 1280 x 720, it is around 2000 Kbps, and if it is full HD 1920 x 1080, it is around 4000 Kbps It is a guideline for the bit rate.

Three video terms to remember in advance

When creating a video, be aware of the video terminology.

In recent years, there have been many cases of video distribution in companies. However, there are many technical terms in the video, so you need to know the meaning of the terms in order to understand the video properly.

Here are three video terms to remember beforehand, so why not take a look at what they are?

What is the video and audio bit rate?

What is the video and audio bit rate?

Bit Rate

Do you like video production or do you value high quality in movies? You’ve probably come across something like bitrate. It always accompanies the technical characteristics of video recordings and its value determines the quality of the image in the file. When working with converters, you will come across this feature more than once, so it is advisable to fully understand what it is responsible for and how it affects the final product: a video or an audio file.

bitrate

To find out what bit rate is, it is worth understanding how video information transmission works. Any video is a rotating sequence of images. In order not to have a “slideshow feel”, the image change speed must be at least 24 frames / sec. Each box has parameters: width and height. The higher they are, the more pixels are placed in an image, the higher the quality.

Each “point” that makes up a frame has a weight and is equal to 1 byte. Let’s take a Full HD picture and calculate its weight – about two megabytes will be released (1920 x 1080 = 2073 600). So one second of video, containing 24 frames, would weigh 48MB. This is where the concept of bitrate comes in: it is the power to compress a video.

Those. the required file, being encoded, loses weight. But due to strong compression, it may also lose quality. Of course, in reality, not everything is so simple; Much depends on the codec used for encoding. This is the name of the direct compression method. So videos in different formats, but with the same bitrate, can produce images of different quality. The concept of “audio bit rate”, denoting the strength of compression, is also applicable, but for an audio stream.

Bit rate types
Delving into the topic, it is worth noting that the bitrate is not always the same. And now we are not talking about a quantitative indicator, but about a division into types. To work competently with media conversion, read about three types of bitrate: constant, variable, and average, which is a hybrid of the first two.

Constant Bit Rate (CBR)
As the name implies, this type of bit rate does not change during file playback. This compression method allows you to fairly accurately determine the size of the output file and ensure consistent quality throughout your listening or viewing session. But in the entertainment industry, constant bitrate is rarely used due to the impossibility of adjusting it. for dynamic playback, because the files get bigger than they could be.

Variable Bit Rate (VBR)
This type of bit rate is flexible and resistant to change, as a result of which it can be adjusted to the playback object and produce an optimal size / quality indicator. For example, for pictures or musical pieces with a reduced information density, the bit rate will decrease, thus reducing the weight of the object.

Average bit rate
This view is a compromise between the previous ones. The problem with variable bitrate is that changes are automated, and sometimes overcompression can occur. Average bitrate allows the user to set the range in which compression variation will occur. True, the technique of its use is not so simple and is mainly used in professional studios when working on serious projects. An additional advantage of the average bitrate is that it allows you to more accurately calculate the file weight even when the compression force changes.

Explanation of the sample rate, bit depth and bit rate

Explanation of the sample rate, bit depth and bit rate

Bit Depth

This is what happens when you compress audio files
High-resolution streaming and audio promise us particularly good lossless sound when playing digital music. But what exactly does that mean? Sample rate, bit depth, and bit rate are explained.

16-bit 44.1 kHz – CD Quality: This slogan is often used when marketing high-resolution and lossless audio formats and equipment. But what exactly is it about?

israelburrows | Israelsaepblog

The quality of digital audio signals is primarily determined by three things: sample rate, bit depth, and bit rate.

In principle, you have to imagine that a digital audio signal is not a constant flow of information. Rather, music is divided into very, many small “slices” (samples), each of which carries the information for the digital-to-analog converter in a short section.

The more samples a signal has per unit time, the more precisely the original analog signal can be mapped.

The sample rate reveals how tight the samples are: the 44.1 kHz of a CD represents 44,100 samples per second.

Bit depth

Bit depth (resolution) is specified in “bits” and indicates how many different values each sample can assume. With 16 bits (CD quality), this is 2 ^ 16, that is, 65,536. The recording studio usually works with 24 or even 32 bits.

This is where many high-resolution formats come into play that also promise studio quality at 32-bit resolution.

▶ ︎ MP3, FLAC, ALAC, WAV – the most important music formats in comparison

Bit rate

The bit rate (bandwidth) of an audio file in uncompressed formats is initially nothing more than the summary of the sample rate, the bit depth and the number of channels. It is specified in kBit / s and therefore provides an initial characteristic value for evaluating the quality of a file.

Example: A stereo CD stores two tracks at 44.1 kHz with a bit depth of 16 bits. This means that its bit rate is 44.1 kHz x 16 bits x 2 channels = 1411.2 kBit / s