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Do you really know what the correct audio bitrate is? Part 2

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Do you really know what the correct audio bitrate is? Part 2

What is the proper bitrate (what is the bitrate setting)

What is the general bitrate of MP4 playback video? Why can’t my MP4 download video play…
The bit rate is 256, the audio sample rate is 4100, the frame rate is 15, and the video resolution depends on the size of your screen. I suggest you download a storm transcoding format converter.

video bit rate
And what we call the bitrate size of a video file generally refers to the sum of the bitrate of the audio and video information in the video file. Taking the most popular and familiar RMVB video file in China as an example, VB in RMVB refers to VBR, that is, V

What is the proper bitrate setting?
The mp4 video bit rate is generally set to 29.97 frame rate is the best, please use the format factory software to transfer, and the default bit rate is generally ok; next is encoding mode. VBR (Variable Bitrate) dynamic bit rate is not fixed

What is the bitrate of the mp4 video?
The bitrate of mp4 video is usually set to around 800. The basic algorithm is: bitrate (kbps) = file size (KB) * 8 / time (seconds), for example, D5 disk, capacity 4

When H.264 is output, what is the proper bitrate setting?
From the blog of jefry_xdz. 1. What is the video bitrate? Video bitrate is the output of video data (amount of video color, amount of brightness, number of pixels) per second

Common bit rates of common audio formats
2. The most common high quality audio bitrate (usually high quality, not highest quality) mp3: 128 kbps aac (LC): 112 kbps aac (HE): 96 kbps aac (HE-v2) : 48 kbps Now commonly used in music, most common

Proper Bitrate Settings for Mp4 Files
If you want to convert and use it on your mobile phone, the video bitrate is: 350. The higher the number, the clearer the file capacity. Video frame rate: 12 is the lowest. 128 sample rate.

What is the suitable bit rate (1080p25 frame rate is suitable)
2.6 Bit rate encoding: VBR, variable bit rate, that is, to deal with simple images with low bit rate, and deal with complex images to automatically increase the bit rate, so that the average bit rate can be the same as CBR video bit rate of the same size, and can be of higher clarity. 1 time is the analysis and processing once, 2 times the effect is better but

How to set the audio bitrate in the video
The audio bit rate is suitable and the audio bit rate is modified. Audio bit rate is the rate at which a digital channel transmits digital signals called the data transfer rate or bit rate. Simply put, the higher the bitrate, the better the audio and video quality, but encoded files

What is the proper audio bitrate?
What is the proper audio bitrate? Do you really know? Thousands of reads 2021-07-23 13:28:02 What is the appropriate audio bitrate? This is a professional question. Audio bitrate, let alone audio

…how to choose the bitrate when converting audio
Swift Video Format Converter is an easy-to-use and versatile video and audio format conversion software. Friends can easily use this software to convert the video formats they need. Not only that, the fast video format converter supports various types of video formats including

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Do you really know what the correct audio bitrate is?

correct audio bitrate

What is the proper bitrate (what is the bitrate setting)

Although the editor is not a music maker, I have also consulted some relevant materials to share a detailed explanation of audio bitrate with you, hoping to help you 1. WAV is generally 1411 kbps, the sound quality is theoretically the best, but in fact, the sound quality is different from other formats Lossless makes no difference, too big

What is the proper bitrate (what is the bitrate setting)
Summary: Now 720p video minimum recommended bitrate is above, h.264 encoding, 2M bitrate is adequate, 1080p is enough to get a HD video, convert it with different bitrates and then compare the image quality. The most used is: h.264 code

Do you really know what the correct audio bitrate is?
3. The larger the MP3, the better, the maximum is 320 (HQ), and there are 256, 192, 128, etc. The above is the proper explanation of several common audio bit rates. Of course, it is not very complete to share with you. After all, the editor is not

What is the proper bitrate setting (bitrate bitrate)
●The bit rate value is compared with the actual audio: 16Kbps = phone quality 24Kbps = increase in phone quality, shortwave transmission, longwave transmission, European standard medium wave transmission 40Kbps = US standard medium wave transmission 56 Kbps = voice 64 Kbps = boost

About audio bitrate
For standard definition, set it to around 6m! Next, let’s take a look at the frame rate, because to account for the smoothness and stability of the image after conversion, it is recommended that the frame rate and

What is the appropriate video bitrate (recommended bitrate for the size and resolution of the video)?
At present, 720p video recommended minimum bitrate is above, h.264 encoding and 2M bitrate is adequate; 1080p is 4M enough to get a high definition video, convert it with different bit rates and then compare the image quality. The most commonly used are: h.264 encoding, 1080P, 2.5M bit rate or more.

Video Format Conversion Bitrate Question

If the original video bitrate is 2Mbps, then I set the output bitrate to 2Mbps, will the image quality be reduced?

A video, the number of images it consists of every second, is called the frame rate of the video. Common frame rates are 24000/1001=23.976, 30000/1001=29.970, 60000/1001=59.940, 25,000, 50,000, etc. This number is the number of images flashed in one second. For example, 23,976 means 24,000 images in 1001 seconds. The frame rate of the video can be constant (cfr, Const Frame-Rate) or variable (vfr, Variable Frame-Rate)

The definition of bitrate is the volume of the video file divided by time. The unit is usually Kbps (Kbit/s) or Mbps (Mbit/s). Note that 1B(Byte)=8b(bit). So a 24 minute 900MB video:
Volume: 900 MB = 900 MByte = 7200 Mbit
Time: 24min = 1440s
Bit rate: 7200/1440 = 5000Kbps = 5Mbps

When the length of the video file is basically the same (for example, the current episode is about 24 minutes), bitrate and volume are basically equivalent, and both are parameters used to describe the size of the video. Files with the same length and resolution have different volumes, which are actually different bit rates.
Bitrate can also be interpreted as the total amount of data used to record the video per unit of time. The higher the bitrate of the video, the more data is used to record the video and the possible interpretation is that the video may be of better quality. (Note that it’s only potential. We’ll discuss why high bitrate doesn’t necessarily equal high image quality later.)

3.
Bit depth, which is what we usually call 8 bits and 10 bits, refers to precision. 8 bits means that each channel is represented by an 8 bit integer (0~255), and 10 bits is shown by a 10 bit integer (0~1023). 16 bit is 0 ~ 65535
(Note that the above expression is not rigorous. When the video is encoded, it is not necessarily possible to use the whole range from 0 to 255, but it can be reserved and only a part is used, such as 16 to 235. We will not detail it here )

Your monitor is 8-bit, which means it can display all intensities from 0~255 for each channel of RGB. However, the color depth of the video is the color depth of YUV. When playing, YUV must be converted to RGB by calculation. Therefore, the 10-bit high precision is indirect, which increases the precision during the operation so that the final color is more delicate.

How to understand the 8 bit screen, you need to play 10 bit:
The radius of a circle is 12.33 m, find its area and keep two decimal places.
The precision of the radius is given to two decimal places, and the result also requires two decimal places, so how high should the precision of pi be? Only two decimal places? Taking pi = 3.14, the area is calculated to be 477.37 square meters. Taking pi = 3.1416, the area is calculated to be 477.61 square meters. The precision of pi is high enough, and the area is calculated to be 477.61 square meters. So taking pi=3.1416 is enough, but 3.14 is not enough.

In other words, even if the precision of the final result is lower, it does not mean that the numbers involved in the operation and the operation process can maintain a lower precision. Based on the premise that the final output is 8-bit RGB, this is why 10-bit YUV still has the precision advantage over 8-bit YUV. In fact, after 8-bit YUV conversion, the coverage accuracy is about 26% of 8-bit RGB, and the accuracy after 10-bit conversion can cover about 97%. Do you want your 8-bit screen to display 97% accuracy? Look at 10 bit.

8-bit precision is not enough, mainly in the low-brightness area, and it is easy to form color banding.

The video format conversion bit rate

If the original video bitrate is 2Mbps, then I set the output bitrate to 2Mbps, will the quality of the video be reduced?

Image quality, i.e. clarity, is a combination of several factors, in addition to bit rate and resolution, including frame rate.

Video formats basic knowledge quote: We tell you about MKV, MP4, H.265, bitrate, color depth, etc. – 4K Knowledge Encyclopedia – 4K China Forum – 4K123!

This tutorial is meant to cover some basic video and audio concepts and terminology. You can answer the following frequently asked questions in more detail:
do
What is the difference between these MP4/MKV formats? Which image is better?
How is the video bitrate calculated? Why is it the same 1080p video, some big and some small?
In what format is the image information stored in the video? Is it the same red, green and blue as the monitor?
What exactly does 8bit/10bit mean? Why is it necessary to watch 10-bit video on an 8-bit monitor?
yuv420/444 What do these signs mean? Which is better?
What exactly do lines, planes, textures mean? Why does the video have high and low frequency?
The higher the bitrate, the better the video quality?
This tutorial will be described in detail in the following modules:
1. Encapsulation format (MP4/MKV…) vs media format (H.264/FLAC/AAC…)
2. Basic video parameters: resolution, frame rate and bit rate
3 Image rendering method: RGB model vs YUV model
4, color depth
5, medium chroma sampling
6, low frequency and high frequency in space: plane, texture and line
7, low frequency and high frequency over time: dynamic
8, clarity and brief description

image quality 1. Packet format (MP4/MKV…) vs. media format (H.264/FLAC/AAC…)
MP4+MKV is the most common type of video files you download. These files are actually similar to a package and their suffix is the packaging method of the package. These packages contain video (image only), audio (sound only), subtitles, etc. When the player is playing, it first unpacks the package (the professional term is called split/split), outputs the video, audio, etc., and then plays it.

Since they’re just one package, that means the suffix doesn’t guarantee what’s inside or how much. Each element of the package, we call it a track, generally has the following:

Video (Video): In general, there should be, but there are exceptions, such as external audio track in mka format, in fact, there is no mkv video. Please note that when we talk about video, we do not include sound.
Audio (audio): Generally speaking, there should be, but in some cases it is muted, so there is no need to bring it.
Chapter: The segment information that came with the original Blu-ray Disc. If the file is checked out, you can see the effect with the chapters in the player:
.potplayer right click screen, option-play-show marker/chapter marker in progress bar.mpc -hc
right click screen, option-setting-on Progress bar shows chapter mark subtitles
(Subtitles): Sometimes the file comes with subtitles, and the subtitles are not directly embedded in the hard subtitles of the video, so they are packed together in the packing container.
Others may have attachments etc which are not listed one by one. There is not necessarily a single track for each type, as MKVs with multiple audio tracks are often seen.

Each track has its own format. For example, it is often said that the video is H.264, the audio is AAC, these are the formats of each track.
Common video formats are H.264 (can be subdivided into 8bit/10bit), H.265 (currently also subdivided into 8bit/10bit), RealVideo (common in early rm/rmvb), VC- 1 (Microsoft-led, common in wmv ). Basically H.264=AVC=AVC1, H.265=HEVC.
There are four common audio formats: FLAC/ALAC/TrueHD/DTS-HD MA, which are lossless, and AAC/MP3/AC3/DTS (Core), which are four lossy.

1. MKV supports encapsulation of FLAC as audio, while MP4 does not. But MP4 can also encapsulate lossless audio tracks (like ALAC, although it is generally believed that the efficiency of ALAC is not as good as FLAC)
2. MKV supports encapsulation of subtitles in ASS/SSA format,