MOVIE STUDIO Ver16 picks up noise when loading a video by adding media. Is there a way to prevent the cause and noise? The video is "NSP さようなら" downloaded from Youtube.
NSP さようなら ('NCP Goodbye' via a Google translation from Japanese) appears to be this YT video: 
@Seiyu-Hanashiro ... can you please describe the noise. And when precisely does this noise occur? Is it just by having the video on the timeline? Or does it only occur when you play the video? Perhaps the noise was introduced by the means by which you downloaded the video from YT. Is there noise when you play the video on an audio player like Windows Media Player or on an audio editor like Sound Forge or Audacity? Does the noise occur with any other audio or video media that you have used even if from YT? If not, that suggusts that the problem more likely lies with the YT download. In playing the original YT video, there does seem to be some distortion, like underlying soft crackling, in the recording. If that's what you are hearing, then the problem lies with the original source on YT.
With Windows Media Player, Win10 movies & TV, editing software Davinci Resolve, and Video proc Vlogger, I was able to read and edit without any problems.
Feels the incorrect decoder used to read the MP4.
We'll need to have a look at the media file that you got from YT. Please see https://www.vegascreativesoftware.info/us/forum/faq-how-to-post-mediainfo-and-vegas-pro-file-properties--104561/ , download the free MediaInfo app and run on that media, and use the upload link when adding a new comment to this thread to allow the forum to see a detailed MediaInfo report on that media.
Also, we're still missing the following information from you:
What would also be helpful is if you could record a sample of what noise the computer is making by using an audio editor with its device setting set to something like Windows WASAPI (it then records any audio that the computer is playing at the time) and upload that audio sample - in MP3 only - via the upload facility. Thank you.
全般 完全名称 : F:\ビデオ\サポートディスクへ転送予定分\NSP さようなら.mp4 フォーマット : MPEG-4 プロファイル : Base Media コーデック ID : isom (isom/iso2/avc1/mp41) サイズ : 10.7 MiB ながさ : 4分 42秒 オーバルビットレート : 319 Kbps 使用したエンコーダ : Lavf56.40.101 ビデオ ID : 1 フォーマット : AVC フォーマット/情報 : Advanced Video Codec プロファイル : Main@L3 設定 : CABAC / 3 Ref Frames CABAC : はい RefFrames : 3 フレーム コーデック ID : avc1 コーデック ID/情報 : Advanced Video Coding ながさ : 4分 42秒 ビットレート : 265 Kbps 幅 : 640 ピクセル 高さ : 480 ピクセル 解像度 : 4:3 モード : CFR モード フレームレート : 30.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 ビット スキャンの種類 : プログレシッブ(PPF) ビット/(ピクセル*フレーム) : 0.029 ストリームサイズ : 8.92 MiB (83%) 使用したライブラリ : x264 core 155 r2901 7d0ff22 Codec configuration box : avcC オーディオ ID : 2 フォーマット : AAC LC SBR フォーマット/情報 : Advanced Audio Codec Low Complexity with Spectral Band Replication Commercial name : HE-AAC 設定 : NBC コーデック ID : mp4a-40-5 ながさ : 4分 42秒 ビットレートモード : CBR モード ビットレート : 48.0 Kbps チャンネル : 2 チャンネル Channel layout : L R サンプルレート : 44.1 KHz フレームレート : 21.533 fps (2048 SPF) Compression mode : Lossy ストリームサイズ : 1.62 MiB (15%) 言語 : 英語 Default : はい Alternate group : 1
ファイルをタイムラインに乗せた段階でノイズが発生しています。
両方ともAudacityでsamplingしました。
ファイルをタイムラインに乗せた段階でノイズが発生しています。
Translation via Google Translate:
Noise is occurring when the file is placed on the timeline.
Thank you for the MediaInfo and audio samples. If these audio samples have faithfully recorded the audio playback on Movie Studio's timeline, then I am not getting any 'noise' at all (using good Klipsch bookcase speakers via a mid-range Yamaha amplifier) - it's the same as I heard listening directly from YT.
But still waiting for your description of the 'noise' that you are hearing.
Just an observation from the MediaInfo report: the video frame rate is 30 fps but the audio frame rate is given as being 21.533 fps under 'Channel Layout'.
Maybe consider transcoding the video via something like Handbrake ( https://handbrake.fr/ ) using .wav as the audio format and see how that works in MS.
downloadload Soft uses realplayerDownloader. Is there a problem with it?
There was no noise with the easeUS downloader.
It turned out that it appears when a file with a low audio bit rate such as 48 Kbps is uploaded to the timeline. Is there any other reason?