Re: [詢問] Youtube如何下載最佳音質「純音樂」影片?
現在YouTube新上傳的影片不會壓縮256kbps的AAC音軌了,
取而代之的是160kbps的Opus,
現在幾乎所有新上傳的影片都會壓縮 VP9+Opus 的版本,
不管熱門與否。
用Fx播放,預設啟用DASH的話,給的音軌會是128kbps的M4A(AAC)。
用Chrome播放,給的音軌會是160kbps的WebM(Opus)。
雖然Opus在我的工作機上播放的話會有一個困擾;
我的工作機音訊裝置預設是44.1KHz運作的,
而Opus由於設計結構的關係,不管輸入的音源原始取樣頻率是多少,
輸出都是48KHz,所以直接播放的話會經過系統核心的取樣頻率轉換,
音質會變差,所以強制轉成48KHz對我來說其實是有一點困擾;
但是因為Opus在低流量的時候壓縮品質實在是太好了,
遠勝過YouTube用來壓縮AAC的壓縮器FAAC,
Opus>>>>>>>>>>>>>>>>>>>>>>>>>>>>FAAC
Opus>=Apple AAC(低流量)
所以即使Opus的48KHz有取樣頻率轉換的失真,
但是聽起來還是比FAAC好太多太多了,
所以現在最好的音軌應該就是160kbps的Opus了。
用foobar2000的youtube source外掛播放的話,
我是選預設播放最接近160kbps的Opus,
舊影片沒有這個音軌的話,改播放192kbps的MP4(AAC)。
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不好意思 我放錯script了 打包版用上面的script反而圖會不見 囧興
請改用下面這個覆蓋 http://pastebin.com/KqbEyT1n
我重新打包了一個 如果覆蓋貼上不方便的話 可以重新下載一次懶人包
http://www.mediafire.com/download/6xwd2j8uklaq55a/
掃毒報告 http://is.gd/Gvk2FT
※ 編輯: mayuyu (61.219.36.61), 12/18/2015 03:27:14
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