購買壓H265影片的電腦~ - 3C
By John
at 2019-12-06T19:16
at 2019-12-06T19:16
Table of Contents
※ 引述《G2S ()》之銘言:
: 這不是20年前會做的事嗎?
: 當時硬碟貴貴 只好犧牲CPU、時間和電力 來換取較小的檔案 (老爸口述)
: 你有沒有比較過把這些檔案壓成H.265的成本 (CPU、電費和時間)
: 比起省下的硬碟容量 哪個比較划算?
: 另外H.265也是有損壓縮的 已經被H.264破壞的畫質在更進一步的被破壞
: 除非你有辦法拿片源的RAW檔 (謎片商剪接師?)
: 也就是經由非線性剪輯出的未渲染前的檔案
: 才有可能壓出比H.264畫質好且檔案又小的影片啦
先提醒不要用chrome預覽播放,不然是跑VP9解碼,需要下載用合適的播放器跟電腦螢幕觀
看,手機螢幕太小了
怎麼都在說H.264再轉H.265畫質會變差啊,這是我自己測試的FM補幀的H.264錄製影片,再
用H.265轉檔
H.264(原)
https://reurl.cc/ObL7Nr
H.265
https://reurl.cc/zy4ga7
舉一個明顯的例子2:01秒的淡藍色漸層圖,在H.264下會有波紋,而在H.265有著更平滑的漸
層色,這是因為H.265有更好的演算法跟預測手段
不過我的轉檔設定也很激進 1.4GB->70MB花了我4小時(我用2400G)
原始片源是直接拿youtube來弄的
https://youtu.be/GQ3V50XoLOM
-----
Sent from JPTT on my HMD Global Nokia 8.1.
--
: 這不是20年前會做的事嗎?
: 當時硬碟貴貴 只好犧牲CPU、時間和電力 來換取較小的檔案 (老爸口述)
: 你有沒有比較過把這些檔案壓成H.265的成本 (CPU、電費和時間)
: 比起省下的硬碟容量 哪個比較划算?
: 另外H.265也是有損壓縮的 已經被H.264破壞的畫質在更進一步的被破壞
: 除非你有辦法拿片源的RAW檔 (謎片商剪接師?)
: 也就是經由非線性剪輯出的未渲染前的檔案
: 才有可能壓出比H.264畫質好且檔案又小的影片啦
先提醒不要用chrome預覽播放,不然是跑VP9解碼,需要下載用合適的播放器跟電腦螢幕觀
看,手機螢幕太小了
怎麼都在說H.264再轉H.265畫質會變差啊,這是我自己測試的FM補幀的H.264錄製影片,再
用H.265轉檔
H.264(原)
https://reurl.cc/ObL7Nr
H.265
https://reurl.cc/zy4ga7
舉一個明顯的例子2:01秒的淡藍色漸層圖,在H.264下會有波紋,而在H.265有著更平滑的漸
層色,這是因為H.265有更好的演算法跟預測手段
不過我的轉檔設定也很激進 1.4GB->70MB花了我4小時(我用2400G)
原始片源是直接拿youtube來弄的
https://youtu.be/GQ3V50XoLOM
-----
Sent from JPTT on my HMD Global Nokia 8.1.
--
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3C
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