The more technical term for video quality is resolution. Every video is recorded at a resolution, such as 480p—720p, 1080p, 4K, 8K, etc. More resolution means more video quality because of great graphic details. Audio, such as speech or background music, is connected to that video file.
This article is a guideline for our readers to understand the difference between video and audio and to answer “Does video quality affect the audio quality.” We will also discuss the resolution of video and its relation to the audio quality of a recorded video.
Does Video Quality Affect The Audio Quality?
Video quality affects audio quality, but only 1.2 points on a scale 9. But the reversed effect is only 0.2 points on the same scale, which is negligible. But a low-quality video can have a high-quality sound because it and its sound differ in the same video file.
- YouTube Video Automatic Adjustment
If you are a YouTuber and you are curious if video quality will affect the audio because the YouTube player allows their viewers to change the video quality, then do not worry; it will not happen. This website accepts higher audio compressions, and changing the resolution does not reduce them. For example, you have recorded a video with 1080p resolution, and the audio bitrate is 320 kbps. If one of your viewers with a slower internet speed reduces the video quality to 720p, they will notice no particular change in the audio quality. But only the video quality will drop, making the video blurred.
If you are a filmmaker and you want to record a video and are curious if the video quality will affect the audio quality, then here’s the deal. Go to your camera settings and check the audio bitrate if your camera allows it. If it is 192 at 1080p, then it is enough. But you can also increase it, especially for 4K or 8K.
- Audio Vs Video
Audio and video are two separate entities. It is possible for a video not to have audio, which is valid with audio. Since we are discussing the relationship between video quality and audio quality, they can have different qualities and never affect the other entity.
- File Size
The only thing that will be affected is the file size. The file size will be more significant if the video and audio qualities are higher. Otherwise, the file size will be smaller. Similarly, a high-quality video can have low-quality audio and vice versa. It is totally up to you or your client’s requirements.
Does 1080p Have Better Audio?
1080p is a widely used resolution around the world. It has better audio because the audio bitrate of 1080p is 192 kbps. The compressing for recording is known as AAC (Advanced Audio Coding), and its quality is way better than MP3. Hence, 1080p has better audio than ISO and IEC standardized as a part of MPEG-4.
As you know, audio and video are two separate entities in a video file. That is why most filmmakers remove noisy and inaudible audio from their videos using video editing software and record and attach better-quality audio. One hundred ninety-two kbps is enough; adding high-quality audio will increase the file size.
Does 720p Affect Sound?
Changing the video quality from higher to 720p will not affect the audio unless you reduce the current audio bitrate. You can try this when you are watching a YouTube video. But if you are streaming video, the culprit for reducing your audio quality will be your video recorder or streaming app.
The second factor that affects the audio quality is the internet connection and speed you have been using to stream your videos. A bad internet connection suppresses or disconnects your audio many times when you are speaking. Your microphone comes on the third number for recording low-quality audio.
The audio attached with a 720p video is at least 192 kbps AAC (Advanced Audio Coding). YouTube also claims to store MP4 video files with an audio rate of 50 to 165 kbps. No matter what, the audios above 128 kbps are clearer when heard. And they become more audible when there is no noise around.
Does Video Bitrate Affect Audio Quality?
Your intelligent camera or video recording app increases the audio quality when you increase the video quality. Hence, video bitrate affects audio quality because the higher the bitrate, the better the audio quality. According to Mike Leonard, Bitrate is not the frame rate but the amount of information each second.
That is why recording a high-quality video with higher bitrates requires more space in your camera or computer storage. Transferring such a massive file from one device to another often becomes an issue. In this case, you must buy high-speed online or fast storage media.
We recommend you choose a reasonable audio bitrate for your high-quality video without increasing size. From 3500 to 6000 kbps are the best video bitrates for 1080p videos recorded at 30 frames per second. But the minimum video bitrate for 1080p with 60 FPS is 4500 kbps, while the highest is 6000 kbps.
Is YouTube Audio Quality Based On Video Quality?
When we request a specific YouTube video by selecting it using its thumbnail, YouTube streams the video and audio separately but simultaneously. The YouTube web player combines them when we are watching the video. As a result, the video quality does not affect the audio quality.
In other technical words, the YouTube video’s audio bitrate is not affected by the video quality even when you drop it a bit. Hence, YouTube audio quality is not based on video quality because they are different entities. Audio only sounds in a video file, while the video combines images.
Which Resolution Is Best For Audio?
For YouTube audio, 44.1 KHz is recommended with 320 kbps audio bitrate. But the best high resolution for audio is from 96 KHz to 192 KHz with 24-bit. The higher sample frequency and bit depth will provide the best sound. But it has a con that it will increase the file size.
24-bit 192 kbps is enough for 1080p and higher quality videos, but you can also choose 320 kbps if the sound to be recorded is very melodic. Three hundred twenty kbps can also be used for 4K and 8K Ultra HD. But remember that increasing the resolution will increase the file size dramatically, and high-resolution video already has a considerable size.
Is 128k or 256k Better audio?
The audio at 256 kilobits per second is way better than the audio with 128 kbps. It is because the audio with a higher bitrate has better quality but better fidelity. And if the dedication is good, you can copy the same audio without any flaws after regeneration.
An AAC (advanced audio coding) audio file with a bitrate of 256 kbps is way better in quality than an mp3 file recorded with the same audio bitrate. The AAC is a better method for recording audio sounds, speeches, music, etc. We recommend this compressing as it is an ISO standard for MPEG-4.
Does Compressing Video Affect Audio?
As we know, audio and video are combined in a single video file. The video file can be MP4 or MKV, while the audio can be MP3, AAC, etc. All these are digital compressions, as the video files we watch today are digital. Hence, if the reduction is lossless, it will never affect the audio.
On the other hand, lossy compressions will affect the audio. Simply put, if you are compressing a video file to reduce its size and have chosen an mp3 audio format, you will feel a drop in audio quality. But if you have selected AAC, which is lossless compression, the audio quality will be the same.
What Causes Low-Quality Audio?
You cannot enjoy watching a video, whether it is a movie or a family video, unless the audio quality is good. Different factors cause the audio quality to reduce, ruining the joy of the video. A faulty microphone or amplifier is the first and foremost cause of low-quality audio.
The microphone is responsible for catching the speech and sounds in the air and transferring them to the amplifier to boost the signal. If either of them is faulty, then you will experience low-quality audio. Secondly, the audio recording software or application can be the culprit because of the wrong settings.
The third thing causing low-quality audio is the faulty and slow internet connection. Most of the time, either the device is defective or the ISP (internet service provider) has limited your audio. It usually happens when you use Discord for streaming and the “High Packet Priority” is enabled.
Audio quality and video quality come with some differences. Video quality does affect audio quality. Audio quality can be improved using a high bitrate and a better compressing format like AAC. Low sound quality happens when you have faulty microphones, wrong settings in the recording software, or slow internet speeds. Therefore, it is recommended to pay attention to all the aspects.
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