Adobe 25520388 User Guide - Page 70

USING ADOBE PREMIERE PRO 65 Importing, transferring, capturing, and digitizing Premiere Pro imports the clip into the Project panel. You can also drag clips from the Adobe Bridge Content panel directly into the Premiere Pro Project panel. Channel support Premiere Pro supports four-channel assets. Every processed pixel in the render pipeline uses four channels. When Premiere Pro processes a three-channel asset, such as DV, HDV, or MPEG footage, Premiere Pro automatically converts it to a four-channel asset. Premiere Pro converts a three-channel asset when you add an effect or transition to the asset. Premiere Pro supports 10-bit color depth, sometimes useful for editing standard and high-definition footage. Importing assets from tapeless formats File-based camcorders from various manufacturers record video and audio into files of specific formats organized within specific directory structures. These formats include Panasonic P2 camcorders, Sony XDCAM HD and XDCAM EX camcorders, Sony CF-based HDV camcorders, and AVCHD camcorders. Camcorders recording in any of these formats typically record to hard disks, optical media, or flash memory media, not to videotape. These camcorders and formats are therefore called file-based, or tapeless, rather than tape-based. The video and audio from a file-based camcorder are already contained in digital files. No capture or digitizing step is necessary to bring them into Premiere Pro. Reading the data from the recording media and converting it to a format that can be used in a project is instead called ingest. Premiere Pro ingests files in any of these file-based formats from any of their media. Adobe provides workflow guides for P2, RED, XDCAM, AVCCAM, and DSLR cameras and footage on the Adobe website. XDCAM and AVCHD formats You can find the video files from XDCAM HD camcorders in the CLIP folder, written in the MXF format. XDCAM EX camcorders write MP4 files into a folder named BPAV. For information about the XDCAM format, see this PDF document on the Sony website. AVCHD video files are in the STREAM folder. For more information about the AVCHD format, see the AVCHD website The Panasonic P2 format A P2 card is a solid-state memory device that plugs into the PCMCIA slot of a Panasonic P2 video camera, such as the AG-HVX200. The digital video and audio data from the video camera is recorded onto the card in a structured, codecindependent format known as MXF (Media eXchange Format). Specifically, Premiere Pro supports the Panasonic OpAtom variant of MXF, with video in DV, DVCPRO, DVCPRO 50, DVCPRO HD, or AVC-I formats. A clip is in the P2 format if its audio and video are contained in Panasonic Op-Atom MXF files. These files are located in a specific file structure. The root of the P2 file structure is a CONTENTS folder. Each essence item (an item of video or audio) is contained in a separate MXF wrapper file. The video MXF files are in the VIDEO subfolder, and the audio MXF files are in the AUDIO subfolder. XML files in the CLIP subfolder contain the associations between essence files and the metadata associated with them. Last updated 1/16/2012