HEVC Encoder

In the "Advanced Settings" you can make detailed adjustments to the HEVC data flow. The advanced settings are divided into "Video", "Audio", and "Multiplexer". Below is an explanation of all the settings that can be changed.

Open advanced settings: File > Export > Video as HEVC > Advanced

NOTE The preset values and status of the control element (locked/unlocked) depend on the selected export preset.

Video

Average bit rate (kBit/s)

The values entered here are applied to the video as an average as a guideline. The size of the video to be exported can only be approximated.

Maximum bit rate (kBit/s)

This is the maximum bit rate in the video stream, i.e. maximum number of bits, that may be transferred to the decoder. This parameter only takes effect in the "Variable" bit rate mode.

CPB (coded picture buffer)

The entered value specifies the maximum amount of storage space for an encoded frame. Higher values can improve quality, but might also cause problems during export. If export is aborted, lower this value.

Maximum GOP length

Determines the maximum GOP length. 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. The sequence of B-Frames und P-Frames repeats until the end of the GOP.

Level

HEVC defines various 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 set video format, the specified 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

  • CPU hardware: Activate this option if you have a powerful processor installed on your computer and the CPU is more powerful than the graphics processor. The corresponding processing step is performed by the main processor and will be supported by the graphics card, if possible.

  • GPU hardware: Activate this option if you have a powerful graphics card and the GPU is more powerful than the CPU. The corresponding processing step is performed by the graphics card and reduces the load on the processor. This is particularly useful for 4K videos. The graphics card's encoder is used.

  • Software: The encoders provided are used. The complete encoding process takes place on CPU, without graphics card support.

Audio

Sample rate

Here you can see the sample rate for audio encoding.

Bit rate (kBit/s)

The desired bit rate is entered here.

Multiplexer

Streamable

The generated video is suitable for live playback on websites.