Page 332 - Manual_Movie Edit Pro 2021_EN_Neat

332

Maximum GOP length: The maximum GOP (view page 348) length is determined
here. High values mean improved compression. Lower values create stronger security
protection and enable improved access to individual frames for processing the video.
A general rule: The shorter the GOP, the more compatible the generated video file.

Tip: A good rule of thumb is to enter the frame rate as the GOP length.

GOP structure: The GOP structure is the sequence of the various frames. At the
beginning of a GOP there is an I-Frame, at the end there are several B-Frames,
followed by a P-Frame (view page 350). The sequence of B-Frames und P-Frames
repeats until the end of the GOP.

Example: A GOP with a length of 20 and the "IBBP" structure will look like this:
No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Frame I B B P B B P B B P B B P B B P B B P B

Profile: Profiles define the encoder properties that are supported.
• Main: This profile was originally intended for the broadcast industry and for
backup purposes. It became less popular when "High Profile" was developed for
exactly these applications.
• HIGH: This profile is used for broadcast and backup applications and is also
sometimes used in the HDTV industry (High Definition Television). This profile
is used for Blu-ray discs.

Note: You should only change this setting when there are problems playing back the
generated video.

Level: H.264 defines different levels. The level determines which bit rate and
resolution are possible for the video.

With the "Auto level" option, the encoder determines the level automatically on the
basis of the resolution of "AVC preset" video formats, the set bit rate and the profile.

Coding quality: This is the easiest way to set the ratio between coding duration and
quality. Select the setting which best suits your needs.

Hardware acceleration: MAGIX Movie Edit Pro supports the hardware acceleration
"Quick Sync Video" for AVCHD exports, AVCHD and Blu-ray discs. This can
noticeably speed up the encoding process.

Smart Copy: If this option is activated, unedited AVCHD material with hard cuts is
transferred without changes. This drastically accelerates the encoding process. The
transfer always takes place on the GOP borders is not frame-precise.

www.magix.com