Adobe Premiere Pro 2.0 [Electronic resources] نسخه متنی

Adobe Certified Expert exam objective

Given a format, explain how to use the options available from the Export Settings panel when exporting from the Timeline to the Adobe Media Encoder.

1.

Select Macromedia Flash Video from the Export Settings > Format drop-down list. Of the five encoders, Flash Video has the fewest options.

2.

Click the Video tab (below the Export Settings panel) and click Options.

3.

Choose an encoding profile from 150 kbps to 700 kbps. If you click Show Advanced Settings you can adjust the frame rate and frame size as well as a couple of other options.

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1.

Select QuickTime in the Format drop-down list.

2.

Select QT 256 Streaming NTSC from the Preset drop-down list.

3.

Open the Video tab, click the Video Codec drop-down list and note that as with QuickTime's Export Movie option, you can select from a list of more than 20 codecs. Several have additional options.

4.

Click the Audio tab and note that the options there are similar to those you encountered in the Export Audio option.

1.

Select RealMedia.

2.

Click the Audiences tab.

This is where you can customize the bitrate from the selected preset and choose one- or two-pass encoding. Both RealMedia and Windows Media offer this option. If two-pass encoding is selected, the encoder analyzes the original video project before transcoding it. Encoding will take almost twice as long, but the resulting video will look better than a single-pass version using all the same parameters.

1.

Select Windows Media.

2.

Click its Preset drop-down list (the next figure shows fewer than half of the NTSC presets).

You probably shot your videos using standard DV, also known as DV25, so named because of its 25 Mbits/second video data rate. Combined with audio and error correction data, DV25's actual bitrate is 3.6 MBytes/second. Broadcast quality DV DV50 has twice that data rate due to extra color information. So when you view DVDs that started as DV25 videos, do not expect them to have the visual quality of broadcast or satellite TV or Hollywood feature films.

1.

Click the Export Settings > Format drop-down list and note that there are five MPEG file formats:

• MPEG1 1.7 Mbits/second with MPEG-1 audio.

• MPEG1-VCD (Video CD) 1.15 Mbits/sec with MPEG-1 audio. This file format is specifically to view about an hour of less-than-VHS-quality video on a CD that will play on most consumer DVD video players and computer DVD and CD drives. You'll need to use stand-alone CD-writing soft ware to create a VCD.

• MPEG2 The presets are geared to high-definition and progressive scan videos. If your goal is to create standard DVD content, select MPEG2-DVD. If you want to tweak the MPEG-2 parameters, select MPEG-2.

• MPEG2-DVD Offers the most presets. Select a preset that gives you the best quality while not exceeding the 4.7 GB of space on a DVD. To help you find the right fit, the Media Encoder has an Estimated File Size display that updates each time you change a preset or a customized setting. You'll take a look at that in a moment.

• MPEG2-SVCD Super Video CD. Like a VCD, SVCDs can play on most consumer DVD players. They hold about 35 minutes of low bit rate (2 Mbit/sec) MPEG-2 video.

2.

Select MPEG1.

Look at the Estimated File Size display in the lower right corner of the Media Encoder. It should read about 7 MB.

3.

Select MPEG1-VCD.

Depending on the Preset you select, the Estimated File Size will be about 25% less than MPEG-1.

4.

Select MPEG2.

5.

Click the Preset drop-down list and select NTSC MPEG-2 Generic.

Check its Estimated File Size and note it's more than twice the size of an MPEG-1 file but still much smaller than the AVI file.

6.

Click the Video tab.

7.

Click that panel's Fly-out Menu and select Expand Advanced Settings (if the option is to Collapse Advanced Settings, then do nothing).

8.

Scroll down that panel's view and take a look at the Bitrate (the GOPGroup of Picturesand Advanced Settings go beyond the scope of this book).

• CBR (constant bitrate) This works well for Internet applications because the bitrate does not fluctuate.

• VBR (variable bitrate) Generally gives you better picture quality than CBR at the same bitrate because it increases the bitrate during action scenes. It offers a one- or two-pass option. Two passes take longer but create a higher quality image. Use VBR when creating a video for a DVD.

  
  

9.

Click the Audio tab and change the Audio Format to Dolby Digital.

That gives you a wide range of options including Surround Sound (in the Audio Coding Mode drop-down list shown in the next figure).

10.

Click OK, give your file a name, click Save (or Cancel) and rendering (transcoding) will begin. Depending on the quality level settings and the speed of your PC, this can take about two times the duration of your project.