7.5

Table Of Contents
HDTV Workflows
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HDTV Workflows
This section describes three common workflows for creating HDTV output:
Creation of film-based television programs
Creation of video-based television programs
Creation of video graphics for broadcast
For a more detailed description of the conform workflow, see “Conforming Workflow” in
the Help.
HD Workflow: Film-Based Television Workflow
The following workflow describes the steps in creating film-based television programs that
originate on film footage and that are planned for NTSC HDTV broadcast. This workflow
uses features that let you change the project and sequence format, eliminating the need to
create a new project and sequence. Modifying the format of the sequence lets you keep both
offline SD material and online HD material available in the same project.
For PAL broadcast, transfer film at 1080p/25, edit offline in a 25p PAL project, and edit
online in a 1080p/25 project.
“Offline Workflow: 24-fps Film Source for HDTV” on page 775 shows the offline stage of
the workflow for such programs, and “Online Workflow: 24-fps Film Source for HDTV” on
page 776 shows the online stage.
For a more detailed description of the conform workflow, see “Conforming Workflow” in
the Help.
To create a film-based HDTV program:
1. Use a telecine process to transfer 24-fps film footage to HD 1080p/23.976 video at 1:1.
The transfer should also create a shot log (for example, a FLEx file).
2. Create a 23.976p SD project in any Avid editing application that supports a 23.976p
project.
3. Convert the shot log file with ALE and import it into the project to create one or more
bins.
4. Use a 24p deck to downconvert the HD video to ITU-R 601 SD video and batch capture
the logged clips in an offline resolution, based on the shot log.
The deck adds 2:3 pulldown (NTSC) or 4.1% speedup (PAL). The Avid system removes
the extra pulldown fields and creates 23.976p media.