Q：What is bitrate?
A: Bit rate very often used when speaking of video or audio quality and file size - defines how much physical space one second of audio or video takes in bits (note: not in bytes). The higher the bit rate, the more times per second the original sound is sampled, thus yielding a more faithful reproduction and better sound. When choosing an MP3, weigh the advantage of a higher bit rate against the size of the file. Generally speaking, a bit rate of 128 kbps or higher will provide satisfactory sound quality.
The same is with the video picture: the higher the bit rate, the better the picture quality although the output video file size also gets larger. If it is possible to save the output file onto a storage with a large capacity the use of higher video bit rates can be recommended.
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