以我的作品壓縮前後作比較,片長2分18秒, 尺寸1280x720
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhhEH75MWTrNk4YxJZpdkIwW37D09eCQfSeqPQNbSUsaJp-CopRZPL_t4CwRUAaWADpy6blxi4ghVQ2dqsyK5ZDfDmNGO-cc476ZiBpZbtOT2vBlc8ulGdabEgmKE0YIQJNUBz8NLqi8K16/s400/hd_orig.jpg)
原始檔容量: 3.8G , codec: quicktime PNG
PNG大概是uncompressed完全未壓縮之外, 最不失真的codec, 所以檔案很大.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiThW-123kt7cY6x5edC7wEy4pXqlovBxs6njYLknMiNue1vWkbbRlbv0yGt-OO2bpx-JuNZjxPZWeeykDLohlj1LXhxcmHAyTDO3_0lJU6P3bvFsIwHfabZ70m3gnjpUw6W1KoaBkogRSd/s400/hd_h264.jpg)
壓縮檔容量: 91.4mb , codec: quicktime H.264
感覺真的非常驚人, 非常強的codec, 小圖只能看到些微的差距, 放大圖看才能看到差別, 壓縮後圖比較灰一點,較沒層次.
怎樣輸出呢?
當用quicktime player開檔案後,
step1
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg3qdsBAVTrJ56xPGDCqFnaX_AVx8tg82s4fOfLeYS3os_1o0phuK3bZRvy89WSVzOlSyVFTSikJTnCvowOcgon7tHbWmpmKNKP198QeZxhbjqIUjJbEGsaojJD29jQY-D5nA5lvHOxbBoK/s400/h264_00.gif)
step2
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi0VObbCVDuziH8zI28rpja6TYQbhaZ3iO_oHoHCEVlN6gNhEgxnIaYEMx0RsAXJtjX0T_Kx0vMKQuVlH-yEqnOqb7ii7E0k26OC73S4IX45NFeiffj_tl1ODSHa426pCezGId7uuUKKw46/s400/h264_01.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgK-x_XMRxOlWDqlFyd7mFEnZ1wUcNOeAHqRs2HFP1-wV18xVSTexj-XShtr2wCTR-mZ4adhD0nUHItL1tGg-CxTCgDW7ex4BEJj5h4EIcUpuOghYZow5xPTRvfDWhlX5DDblbwDE2V00jk/s400/h264_02.gif)
Export: Movie to QuickTime Movie
Use : Broadband - High
step3 按下 Options 按鈕
step4
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh2njmSgEFXolM7Nc7yBDBbVNXe0EC5WF7HnkfUGuK8LV9FpHFkPoZ9EbmK0Y64LRpne5ggv1Fnadc6S9xmfwaBu-qxUoSW0f66N5ZPfixSqLSW5e8XO-6tJ3o-O0w8dhOX7QF8VggTUnub/s400/h264_03.gif)
step5
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdM2jT7fpZjjm16IroUI5ieOzc_mA1qZ0Mib3EGIHU0ClWqpsUSkwYygMJXA__LJj1wotmrw4pGMBDy5HSOxMC1yTVGX5Z3MuPLPyS4WUK69psiorplFeEmlrLS5M2KQwzU5UTLU05qzA-/s400/h264_04.gif)
上圖是我的設定,有比較重要的是Data Rate, 這個決定影片的畫質, 以下設定是比較好的參考數據.
H.264 較佳的設定
- 1920 x 1080 : 7,000-8,000 Kbps.
- 1280 x 720 : 5,000-6,000 Kbps.
- 640 x 480 : 1,000-2,000 Kbps.
- 320 x 240 : 300-500 Kbps.
- 176 x 144 (3G) : 50-60 Kbps 搭配 10-15 fps, 或 150-200 Kbps 搭配 24-30 fps.
Encoding mode: Best quality (multi-pass)
設定完後按下確定鈕
step6
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBorqfWLVVC0Cit9_Inn7ujyonAtPiJ5itFm8oauUVhC08FvM7UvwD7W-zj7EvB0qnoEfAjzr3kSG4qur5-0UA2zi99kh3Q6a7jIgOvrO5QdVqvkX0y-FlAHXnh6vJW7GrWGq3MRGs6THL/s400/h264_05.gif)
step7
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBPbCwXRZXoWa38T0g-oRPQ2CvT3EmCsVu3GwkkKr9UvgQhRhA_3IQ89ms77wNoGyu6tQWuaUylL4QC7cKOA8lewP94FN1q_j5hElTr-uC7Gb-7I9iNRGwGEkfqz9gLbxp5iwKUxZbouId/s400/h264_06.gif)
由於壓縮後, 濃度變低, 所以在壓縮時將濃度提高.
step8
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEteCe0QcZqx47fmCvWYjBBsfmP57Uy-69J_pFhPRIW3cqLENK6BImMn_r4BMfUHfiYsHlcmji2mN68TOCLqZ4rLiiLYjDo7i6t30AqqyLANhGWi5CUV3-b_yiL0JooayUBn5ReiCIvpUF/s400/h264_07.gif)
step9
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-dRZtKu-EtUPLhKRDtts66H_AsadxU3tEu0iQFC7hd0oGc7xkhETxgRQpAGiquTS6LI69IXWR6NVUjghfXlVUtmNkceh329Bje7qUydC7Ft7gDG1V6aHWCbY3TIWQ8no17qpwpRNIyCZb/s400/h264_08.gif)
step10
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1vQjho2OeM2dYZNUS9vFV2CLre73zQJFAN_0hUtaeQZFc5i8X5L95J_659rIHxyCAGiz0sgqszrsHfYEceTCH0MOtvwg5y_LStDTCH9mzr6ClzruXjEmVnugBQyGoeIWxVxuDW_6-a-Vh/s400/h264_09.gif)
最後確認這些設定
按下OK
step11
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi3ZcSGMYGpfOutdNf4SHVKyOBhiPkrUK9pB3dHaLyQCIj47WMSpKrbsZSyRZn-0TYKO3tIf0vchYR6JF0l80wV7julCsS7OzHJ4GQAJT0Zx05fr9txYuxUCLMCAV1VYnKU3whDARZGVtZT/s400/h264_10.gif)
命名檔名,再按下Save開始儲存.
參考資料: http://www.apple.com/quicktime/tutorials/h264.html
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