Bedienungsanleitung Adobe Premiere Pro CC - 2014 (Seite 438 von 445) (Englisch)

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Exporting

Last updated 12/16/2014

Exporting for the Web and mobile devices

Adobe Premiere Pro lets you easily create videos that can be exported to the Web or to mobile devices.

To export your project, click on the sequence and select File > Export > Media.

In the Export Settings dialog box, you can choose the most optimal file format, frame size, bit rate or ready-made

presets for faster upload time and better playback quality.

Here are a few tips to help you choose the most optimal settings.

Tips for creating video for the Web

Follow these guidelines to deliver the best quality video for broadcast over the Web.

Know your audience data rate

When you deliver video over the Internet, produce files at lower data rates. Users with fast Internet connections can

view the files with little or no delay for loading, but dial-up users must wait for files to download. Make the clips short

to keep the download times within acceptable limits for dial-up users.

Select the proper frame rate

Frame rate indicates frames per second (fps). If you have a higher data rate clip, a lower frame rate can improve playback

through limited bandwidth. For example, if you compress a clip with little motion, cutting the frame rate in half can

save you only 20% of the data rate. However, if you compress high-motion video, reducing the frame rate has a much

greater effect on the data rate.

Because video looks much better at native frame rates, leave the frame rate high if your delivery channels and playback

platforms allow. For web delivery, get this detail from your hosting service. For mobile devices, use the device-specific

encoding presets and the device emulator available through Adobe Media Encoder in Premiere Pro. If reducing the

frame rate, the best results come from dividing the frame rate by whole numbers.

Select a frame size that fits your data rate and frame aspect ratio

At a given data rate (connection speed), increasing the frame size decreases video quality. When you select the frame

size for your encoding settings, consider frame rate, source material, and personal preferences. To prevent pillarboxing,

choose a frame size of the same aspect ratio as the frame aspect ratio of your source footage. For example, pillarboxing

results when you encode NTSC footage to a PAL frame size.

Cover progressive download times

Learn how long it takes to download enough of your video so that it can play to the end without pausing to finish

downloading. While the first part of your video clip downloads, you can display other content that disguises the

download. For short clips, use the following formula: Pause = download time – play time + 10% of play time. For

example, if your clip is 30 seconds long and it takes 1 minute to download, give your clip a 33-second buffer. The applied

formula is 60 seconds – 30 seconds + 3 seconds = 33 seconds.

Remove noise and interlacing

For the best encoding, remove noise and interlacing.

The higher the quality of the original, the better the final result. Frame rates and sizes of Internet video are smaller than

frame rates and sizes of television video. However, computer monitors typically have color fidelity, saturation,

sharpness, and resolution at least as good as high-definition televisions. Even with a small window, image quality can

be as important for digital video as for HDTV. Artifacts and noise are at least as obvious on a computer screen as on a

television screen.

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