How to convert video into audio? What is the principle of converting video into audio?

How to Convert Video to Audio

You can use a dedicated video to audio conversion tool or software, the following is a common method:

Find a reliable video to audio conversion tool or software, such as FFmpeg, HandBrake, etc. These tools usually support the conversion of multiple video formats to audio formats.

Download and install the software of your choice, making sure it is compatible with your operating system.

Open the software of your choice and import the video file you want to convert. You can usually add the file to the software interface by dragging and dropping it.

In the settings, select the audio format to be converted, such as MP3, WAV, etc., and specify the output path to save the converted audio file.

Make other settings as needed, such as audio quality, channels, sample rate, etc.

Click the Convert or Start button to start converting video to audio. The conversion time depends on the size of the video and your computer's performance.

After the conversion is finished, you will find the converted audio file in the specified output path, which can be played and processed by a player or audio editing software.

Please note that when performing any form of conversion, please ensure that you comply with relevant laws and regulations and respect the copyright and intellectual property rights of others. You can only perform the conversion if you have legal authority or ownership.

What is the principle of video conversion to audio?

The principle of video to audio conversion mainly involves audio and video encoding and decoding and extraction technology. Specifically, the following is a brief explanation:

Audio and video encoding: Video files contain a series of continuous image frames, each of which is composed of pixels. Audio files contain a series of continuous sound samples. When converting video to audio, the image frames and sound samples in the video must first be encoded so that they can be compressed and stored as data suitable for audio format.

Video decoding: The video decoder decodes the encoded data in the video file into original image frames and restores the image information.

Extract audio track: After the video is decoded, the audio track can be extracted from it, that is, the sound contained in the video. This process is similar to separating the sound part from the video file.

Audio encoding: The extracted audio tracks need to be encoded so that they can be compressed and stored as data in the target audio format.

Save as audio file: The data after audio encoding can be saved as audio file. Common formats include MP3, WAV, etc.

In general, the process of converting video to audio involves decoding the video file, extracting the audio track from it, and then encoding the audio and storing it as an independent audio file. This achieves the goal of converting video to audio.