Once you have selected the video encoder, the corresponding configuration options are displayed:

NVIDIA

Frame rate, resolution

Set the desired frame rate and resolution.

Device

GPU on which the encoding will be performed (in case multiple GPUs are installed).

Codec

ibaCapture supports H.264 and H.265 (or HEVC) encoding. The main benefit of H.265 encoding is a reduction of the required storage space compared to H.264 encoding. However, this comes at the expense of increased computing power requirements (both for encoding and decoding). Select the encoding type in the dropdown menu:

  • H.264

  • HEVC (H.265)

Encoder preset

The NVIDIA encoder API provides different presets. Their names indicate their intended use. If a preset is not supported by the GPU, it reverts to the default preset.

If you enable the Encoder preset customization option, you can configure individual settings.

A description of the parameters can be found in chapter Analog cameras (Ux H264).
Intel Quick Sync

You can enable hardware acceleration.

Codec

ibaCapture supports H.264 encoding as well as H.265 (or HEVC). Select the encoding type in the dropdown menu:

  • H.264

  • HEVC (H.265)

Bitrate control

  • VBR (Variable Bit Rate)

    VBR will adjust the bit rate according to the images' complexity. That means, that a high bandwidth is required for a high activity and a low bandwidth for low activity in the video.

  • CBR (Constant Bit Rate)

    If you select CBR, you can configure a fixed maximum bitrate and hence make sure that the demand for the bandwidth remains calculable. Thus, the maximum value will not be exceeded, no matter how much activity is in the video.

GOP size

GOP (Group Of Pictures) defines the number of pictures after which a full picture, a so called keyframe will be stored. The pictures between the keyframes are derived from the previous keyframe, in between, only changes of the pictures are stored. With a high GOP, possible encoding errors exist longer, with a low GOP, the bitrate and hence the memory requirements of the video stream tend to grow. The default setting 30 is suitable for most of the cameras.

Frame rate, resolution

Set the desired frame rate and resolution.

Performance slider

The performance can be adjusted with the slider to prioritize either compression or speed. Please note that a high speed causes low compression and requires large memory space. High compression requires high computing capacity and lowers the speed.