Capture Guide
(capture analogue sources with VirtualDub/AviSynth)

1. Preface / Basics
1.1 Desired Final Format
1.2 Capture codec

2. Optimizing your system / additional software needed

3. Introduction analogue video
3.1 Lines, frames and fields
3.2 Sample rate and size
3.3 Vertical sampling and size
3.4 Bandwidth and detail (for advanced users)
3.5 A few words about the amount of detail and bandwidth in various analogue sources

4. Frame sizes for newbies
4.1 Sample rates of some standard formats
4.2 Approximate active capture window
4.3 Recommended capture size
4.4 Resizing

5. Frame sizes for advanced users
5.1 The guideline for digitizing
5.2 Sampling and Nyquist's theorem
5.2.1 Sample rates of some standard formats
5.3 Capture card scalers
5.3.1 Capture card scalers (PAL)
5.3.2 Capture card scalers (NTSC)
5.4 Active capture window
5.5 Recommended capture size
5.6 Resizing

6. Capturing with VirtualDub or VirtualVCR
6.1 Capturing with VfW or WDM drivers
6.2 Capturing with VirtualDub
6.2.1 General settings
6.2.2 Specific settings The size settings The capture codec settings
6.2.3 Saving your settings
6.2.4 VideoWDMControl utility
6.2.5 The capturing process
6.3 Capturing with VirtualVCR

7. Postprocessing the video
7.1 Processing the video using VirtualDub
7.2 Processing the video using AviSynth
7.3 Compressibility test with Gordian Knot

8. Encoding and authoring
8.1 DivX/XviD encoding
8.1.1 Video
8.1.2 Audio
8.1.3 Synchronization problems
8.2 DVD/SVCD/CVD/VCD encoding and authoring
8.2.1 DVD/SVCD/CVD/VCD encoding
8.2.2 Splitting with bbMPEG
8.2.3 DVD/SVCD/CVD/VCD authoring DVD authoring and burning guides SVCD/CVD/VCD authoring and burning guides


9. Analogue video
9.1 Analogue video signals
9.2 The 625/50 (PAL) and 525/60 (NTSC) timings
9.3 Signal types

10. Determining the active capture window of a capture card
10.1 Introduction
10.2 Using the analogue signal from a DVD player as a reference
10.3 Capturing and how to interpret your results
10.4 Why are the white lines in my capture so blurred?
10.5 A special case: BT878 based capture cards 

11. BT8x8 Tweaker
11.1 BT8x8 Tweaker options explained
11.2 BT8x8 Tweaker - left, right and top border settings

12. Removal of chroma artefacts
12.1 Chroma noise (red/yellow areas on the skin of people)
12.2 Correcting chroma shifts
12.2.1 Introduction
12.2.2 VirtualDub usage
12.2.3 AviSynth usage
12.3 Removing rainbow effects and dot crawls
12.3.1 Introduction
12.3.2 AviSynth usage
12.4 Other types of chroma noise

13. Removal of clicks, scratches and VHS drop-outs
13.1 Introduction
13.2 AviSynth usage
13.2.1 DeSpot
13.2.2 DeScratch

14. Removal of logos
14.1 Introduction
14.2 VirtualDub usage
14.3 AviSynth usage

15. Digital video - color
15.1 A few words about Color in digital video
15.2 YUV to RGB conversions
15.3 Tools for adjusting colors

16. Pixel Aspect Ratio
16.1 An introduction to Pixel Aspect Ratio (par)
16.2 Determining target PAR
16.3 Determining source PAR
16.4 Resizing and cropping
16.4.1 You already know what vertical size you want, and you need to determine how to resize horizontally to get to the target PAR
16.4.2 You already know what horizontal size you want, and you need to determine how to resize vertically to get to the target PAR
16.5 An example from the real analogue capping world: cropping of black borders

17. VirtualDub frameserving

18. Synchronising Video and Audio

19. Credits
19.1 History
19.2 Thanks a lot
19.3 Contact information

Last edited on: 23/08/2004 | First release: n/a | Author: Wilbert | Content by