USING ADOBE PREMIERE PRO

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Importing, transferring, capturing, and digitizing

Even though the layers in Illustrator are merged in Premiere Pro you can edit the layers by selecting the clip and choosing Edit > Edit Original.

Import numbered still-image sequences as video clips

You can import an animation contained in a single file, such as an animated GIF. You can also import a sequence of numbered still-image files, such as a TIFF sequence, and automatically combine them into a single video clip; each numbered file becomes one frame of video. Importing a sequence is useful for animations exported as a series of numbered still images by applications like After Effects. The images in the series cannot include layers. For information on layers and flattening, see the application’s documentation.

1Set the framerate for the still-image sequence. Select Edit > Preferences > Media (Windows), or Premiere Pro > Preferences > Media. Then, select a framerate from the Indeterminate Media Timebase menu. Click OK.

2Make sure that each still-image filename contains an equal number of digits at the end and has the correct file extension—for example, file000.bmp, file001.bmp, and so forth.

3Choose File > Import.

4Locate and select the first numbered file in the sequence, select Numbered Stills, and click Open. When Numbered Stills is selected, Premiere Pro interprets each of the numbered files as a single frame in a video clip.

Note: Changing the default duration of still images in the Preferences dialog box does not affect the duration of numbered stills imported into a video clip. Each still becomes one frame when imported in this way.

More Help topics

“Media preferences” on page 19

Importing digital audio

You can import digital audio clips stored as audio files or tracks in video files. Digital audio is stored on computer hard disks, audio CDs, or digital audio tape (DAT) as binary data readable by computers. To keep quality as high as possible, transfer digital audio files to your computer via digital connections. Avoid digitizing the analog outputs from your audio sources through your sound card.

Note: To capture an audio-only file from a digital video source, choose Audio from the Capture menu in the Logging pane of the Capture panel. Premiere Pro does not support audio-only capture for some formats, such as HDV.

Using audio from audio CDs

You can use CD audio (CDA) files in a project, but before you can import them into Premiere Pro, you need to convert them to a supported file format, such as WAV or AIFF. You can convert CDA files using an audio application such as Adobe® Audition®.

Note: Make sure that you own the copyrights or have licensed the copyrights to any audio tracks you use.

Using compressed audio formats

Music stored in formats such as MP3 and WMA are compressed using a method that removes some of the original audio quality. To play back compressed audio, Premiere Pro must decompress the file and may need to resample it to match your output settings. Although Premiere Pro uses a high-quality resampler for this purpose, the best results come from using an uncompressed or CD audio version of the audio clip whenever possible.

Last updated 1/16/2012

USING ADOBE PREMIERE PRO

71

Importing, transferring, capturing, and digitizing

Using audio from Adobe Soundbooth

You can use Adobe® Soundbooth™ to perform advanced audio editing. If you export the audio from Adobe Soundbooth to an audio file format compatible with Premiere Pro, you can import the audio into Premiere Pro projects.

Audio sample rates supported

Premiere Pro natively supports these audio sample rates:

•8000 Hz

•11025 Hz

•22050 Hz

•32000 Hz

•44100 Hz

•48000 Hz

•96000 Hz

Conforming audio

Premiere Pro processes each audio channel, including audio channels in video clips, as 32-bit floating-point data at the sequence sample rate. This processing assures maximum editing performance and audio quality. Premiere Pro conforms certain types of audio to match the 32-bit format and the sequence sample rate. If conforming is required, it is done when a file is imported into a project for the first time. Conforming takes some time and disk space. A progress bar appears at the lower right of the Premiere Pro window when conforming begins. Premiere Pro saves conformed audio in CFA audio preview files. You can determine where to save these audio preview files by specifying a Scratch Disk location for Audio Previews in the Project Settings dialog box.

You can work with audio files, even applying effects to them, before they are fully conformed. However, you can preview only the parts of the files that have been conformed. You cannot hear unconformed sections on playback.

These rules determine which types of audio get conformed:

Uncompressed audio

•Premiere Pro does not conform audio in uncompressed clips that were recorded in one of the natively supported sample rates, when you use these clips in sequences with matching sample rates.

•Premiere Pro does conform audio in uncompressed clips when you use them in sequences with non-matching sample rates. However no conforming is done until you export the sequences or create audio preview files.

•Premiere Pro does conform audio in uncompressed formats that were not recorded in a natively supported sample rate. In most of these cases, it will upsample the audio either to the nearest supported sample rate, or to a supported sample rate that is an even multiple of the source audio sample rate. For example, it will upsample an 11024Hz source to 11025Hz, since that is the nearest supported rate, and there is no supported rate that is an even multiple of 11024.

Last updated 1/16/2012