![\"Video](\"https:\/\/www.magix.com\/fileadmin\/user_upload\/Produkte\/Video\/Video_Sound_Cleaning_Lab_2017\/ENG\/i_b97eba\/grafik-982-gui-videosound-cleaning-lab-2017-int.jpg\")
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Sound is an integral part of video.
\nAs was the case with the author, initially I will handle the video with the stance that it is only necessary to make a sound.<\/p>\n
![\"video](\"https:\/\/static.clideo.com\/assets\/images\/landing\/mockup-add-audio-to-video.png\")
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However, as I went over and over again, I gradually began to wonder “how can I make a good sound” and “what kind of knowledge do I need to have to optimize the sound parameters?” I will come.<\/p>\n
In this article, we will explain the sound of videos, learn how to make it “sound good”, and what kind of knowledge should be used to control the sound quality and amount of audio data.<\/p>\n
What is “video sound”?
\nThere are several types of voice data.
\nParameters related to the sound quality of audio data
\nSample size (bit depth)
\nSampling rate
\nBit rate
\nresume
\nPoints to build a video distribution service Free distribution
\nVideo Recording And Live Distribution Guide You Can Do In-House For Free<\/p>\n
What is “video sound”?
\nVideo is a combination of video and audio data.
\nVideo and audio are separate, and a video file is a combination of different data methods (codecs).
\nYou already covered this in detail in a previous article, so check it out.
\nhttp:\/\/blog.socialcast.jp\/06\/post-198\/<\/p>\n
Since the video file has the above structure, the image quality and sound quality can be adjusted separately.
\nTherefore, the sound quality of the video depends on the audio data part. .<\/p>\n
There are several types of voice data.
\nThere are several data methods for voice data.
\nThere are two main types, each of which has multiple codecs (data methods).<\/p>\n
lossless codec
\nA data method that has a low compression rate but can restore the original sound quality.
\nFLAC, ALAC, etc<\/p>\n
lossy codec
\nA data method that has a high compression rate but cannot restore the original sound quality when played back.
\nMP3, AAC, WMA, etc<\/p>\n
What is used in Internet video is a lossy codec with a high compression ratio.
\nThere is a lot of AAC and MP3, and it seems that most of the videos that are generally seen these days are AAC.
\nTherefore, to aim for high sound quality in Internet video distribution, it is important to understand how the sound quality of AAC or MP3 (lossy codec) goes up or down.<\/p>\n","protected":false},"excerpt":{"rendered":"