What do bitrate and sample rate mean in audio files?
What is the proper video bitrate?
What do bitrate and sample rate mean in audio files?
The meaning of bit rate and sample rate in audio files is as follows:
1. Bit rate:
Bit rate refers to the number of bits (bits) transmitted per second. The unit is bps (bits per second) The higher the bit rate, the more data is transmitted per second. Bitrate in sound refers to the amount of binary data per unit of time after converting an analog sound signal to a digital sound signal, which is an indirect measure of audio quality.
2. Sampling rate:
Audio sample rate refers to the number of times the recording device samples the sound signal in one second. The higher the sample rate, the more realistic and natural the sound will be. On today’s major capture cards, the sample rate is generally divided into five levels: 11025 Hz, 22050 Hz, 24000 Hz, 44100 Hz and 48000 Hz.
What is the proper video bitrate?
After knowing what the video bitrate is, let’s take a look at the proper video bitrate. As mentioned above, many video bitrates are between 2M-4M, which is divided by the video resolution, of which 720p video The bitrate of 1080P video is generally 2M, and the bitrate of 1080P video is 4M. If the video bitrate exceeds 4M, then the video quality is what we often call 2K or even 4K, and the video production cost is relatively high .
Finally, let’s introduce the optimal bitrate of each resolution video, so you can adjust it according to the needs of the video:
1.360p or 480p video: The bit rate of this type of video is preferably greater than or equal to 0.8M.
2720p video: The bitrate of this type of video should be greater than or equal to 1.5M, of which 2M bitrate is the best.
3. 1080p video: ≥2.5M, the optimal bit rate is 4M-8M.
4.4k video: 4k is currently the highest quality type of video and its bit rate is typically 12M.
