CCTVB Labs

在這裡會展示各樣影片處理的實驗樣本。

Abbreviation List



USM After Resize vs USM Before Resize

這裡收集了一些截圖作對比參考,請自行衡量應該將USM或其他Sharpen Filter放在Resize之後或是放在Resize之前。
註1:"USM After Resize" = 將Sharpen放在Resize之後;"USM Before Resize" = 將Sharpen放在Resize之前。
註2:這裡說的Resize僅指Downscaling,如果是Upscaling個人絕對建議將Sharpen放在Resize之前。

Experiment Set 1


Sample

Comments

100% Crop & Zoom to 1080p

USM 28 After Resize
USM 64 Before Resize

100% Crop & Zoom to 1080p

No Sharpen No Resize
USM 28 After Resize

100% Crop & Zoom to 1080p

No Sharpen No Resize
USM 64 Before Resize

Experiment Set 2


Sample

Comments

100% Crop

USM 28 After Resize
USM 64 Before Resize

100% Crop

No Sharpen Just Resize
USM 28 After Resize

100% Crop

No Sharpen Just Resize
USM 64 Before Resize

Experiment Set 3


Sample

Comments

200% Crop & Zoom to 1080p

USM 28 After Resize
USM 64 Before Resize

200% Crop & Zoom to 1080p

No Sharpen No Resize
USM 28 After Resize

200% Crop & Zoom to 1080p

No Sharpen No Resize
USM 64 Before Resize


Yadif vs KernelDeint vs QTGMC

QTGMC其實不算是要比較的項目,因她的強大基本上是有目共睹,所以她只是一個作為對照實驗的存在。

Experiment Set 1


Sample

Comments

100% Crop

Yadif Default Setting
KernelDeint Default Setting

100% Crop

QTGMC Fast Preset
Yadif Default Setting

100% Crop

QTGMC Fast Preset
KernelDeint Default Setting

Experiment Set 2


Sample

Comments

100% Crop

Yadif Default Setting
KernelDeint Default Setting

100% Crop

No Deinterlace Filter
Yadif Default Setting

100% Crop

No Deinterlace Filter
KernelDeint Default Setting

200% Crop

Yadif Default Setting
KernelDeint Default Setting

200% Crop

No Deinterlace Filter
Yadif Default Setting

200% Crop

No Deinterlace Filter
KernelDeint Default Setting

Under Construction

CCTVB Color Bar


Loss of Signal Defect

因訊號問題導致錄影的片段不完整會對DSS類的Source Filter做成影響。
最大的原因應該就是DSS類的Source Filter不似DGSource、FFmpeg等般會為影片進行Index(索引)…
所以會出現判斷的影片長度(Frame)和實際的影片長度(Frame)有差異,從而令壓製時在最後會停下來的問題。
(因為判斷的Frame比實際的Frame多,當實際擁有的Frame已全部處理,就再無Frame可繼續處理而停下來了。)
解決方法當然是用DGSource類會進行Index的Source Filter取代DSS類的,
但也可以選擇把ts無損Remux成mkv,這樣判斷的影片長度便正確了。

Experiment Set 1







Comments


Experiment Set 2









Comments