7.0
Table Of Contents
- Site Settings
- Index Site Settings
- Avid Liquid Reference Manual
- Contents
- Introduction
- Documentation
- Basics
- Signup
- High Definition
- Input
- Logging and Digitizing (Capture)
- EZ Capture
- Starting EZ Capture
- Basics
- The Logging Tool and Its Functions
- Video Inlay, Timecode Fields and Status Field
- Player Source (D)
- Reels and Racks (E, F)
- Controls (Player and Edit Buttons, G)
- A/V Inputs (Selecting Source Tracks, H)
- Stereo or Mono (I)
- 4:3 or 16:9 (I)
- Selecting a Media Format/Codec Preset (J)
- Destination Volumes for Digitizing / Capture Volumes (K)
- Select Audio Monitor /Mute
- Video Tool / Calibration Control /IPB Settings
- Clip Tab: Naming and Numbering Clips
- Color Correction Tab
- Audio Tab
- Master Tab
- Media Tab
- Send Clips To Timeline (Direct Insert)
- Properties
- Methods
- File Ingest
- Background Live Capture
- Importing Objects
- Copying/Pasting Objects from Other Projects
- Media Management and Object Import
- Creating Objects
- Voice-Over
- Importing EDL/AVID MediaLog Files
- Exchange
- Administration
- The Project
- The Object
- Media Management
- Edit
- Video Editing
- Audio in the Timeline
- Special Functions
- Finish
- Effects in Avid Liquid: The Basics
- Detailed Description of Classic Effect Editors
- Realtime FX
- AFX PlugIns
- Special FX
- Timewarps and Color Correction
- Color Correction Editor
- Linear Timewarp
- Timewarp Editor
- Audio
- Audio Postproduction and Audio Effects
- Basics
- ASIO Driver and DirectSound
- 32-bit Floating Point Audio
- Special Characteristics of Audio Clips
- Inserting Audio Clips on the Timeline
- Assigning Tracks
- Stereo and Mono, Panorama and Balance
- Muting Timeline Tracks (Audio Playback)
- Audio Scrubbing - Digital or Analog
- Working with more than 16 Audio Source Tracks (Real- Time Playback)
- Audio Tool
- Audio Editor
- Special Functions
- SmartSound: Background Music Made to Measure
- Audio Effects
- Avid Liquid Plugin Audio Effects (VST)
- Basics
- Audio Postproduction and Audio Effects
- Titler
- DVD Authoring
- Export
- Customize Avid Liquid
- Glossary
- Index
1000
Chapter 17 Export
GOP Structure Samples
With different settings for GOP type, N and M values, a wide range of GOP structures is possible:
Minimum Base Quantization
This parameter influences encoding quality and ranges between 1 and 20 (theoretically it can go up to
112, but that would generate inacceptable results). I, B and F slider move in sync. 1 specifies the optimum
quality, 20 is not so good, but still ok.
Default = 2 (IPB Capture = 1).
One exception: IPB Settings when accessed via the Logging Tool (not in all products) let you move the
three sliders individually.
Additional Options
Detect scene change -
This is a function of the Logging Tool. On detecting subsequent video images which differ greatly
from one another, Avid Liquid acknowledges the new scene by inserting an I-Frame at the start of
the new scene.
4:2:2 -
is a color sampling procedure (Chroma Sampling; see also the Glossary for more information on
various sampling methods). DV and also DVD conforming to MP@ML employs a 4:2:0 sam-
pling, which is the default for all MPEG related data export. When (S)VCD or DVD is selected as
the Destination format, the 4:2:2 option remains inaccessible. 4:2:2 is not in line with DVD specs.
4:2:2 generates a better quality output for use in professional post production facilities. Valid
Destinations are Elementary and Program Stream exclusively, at bit rates up to 50 Mbit/s.
GOP Size GOP Type (N) RefPicture
Period (M)
IPB Structure
13 Closed 3 I
PBBPBBPBBPBBIPBB...
12 Closed 3 I
PBBPBBPBBPBIPBB...
12 Open 3 I
BBPBBPBBPBBIBB...
1 Closed 1 IIIII
...
2Closed1I
PIP. . .
4Closed1I
PPPIP.. .
2Open2I
BIBIB...