---
title: "About transferring and transcoding"
canonical: "https://help.vicon.com/space/Nexus220/897714109/About%20transferring%20and%20transcoding"
format: markdown
---
> ✅ **Tip**   
> ✅ Because of the size of video files, transferring and transcoding takes up time and computing resources, so is best done as a batch process on a number of video files during a break or after the day's capture session ends. Ensure you transfer, transcode and then delete the .*vvid* files regularly to avoid filling up your SSDs.

To transfer and transcode reference video files, you use the **Transcode** tab, which is displayed by default in the **Communications** panel.

> ![comms-pane-transfer-tab.png](media://5ec69a58-4872-46a9-9c20-699d65d2fec2)

You can transcode and transfer to the Nexus host PC reference video files that have been produced by one or more Vicon Vue cameras or FLIR cameras, and recorded to separate drives on the host PC.

Vicon video cameras are easiest to configure and offer higher frame rates than other supported video cameras. 

> Macro (scroll-pagebreak)

### Comparison of vvid files and transfer rates

The following table provides a comparison of .*vvid* files and transfer rates for supported video cameras. All values are approximate and are provided for guidance only.

| Camera type | Width | Height | Frame rate | MB/s |
| --- | --- | --- | --- | --- |
| FLIR Blackfly BFS-U3-23S3C | 1920 | 1200 | 150 | 330 |
| Vue (no windowing)   
Vue (with windowing) | 1920   
1280 | 1080   
720 | 60   
120 | 119  
105 |

Video files are large, so as part of the transfer process, you normally select a codec (Compressor/Decompressor) format to reduce the video file size. The selection of an appropriate codec and codec settings ensures the maximum reduction in file size, while minimizing any reduction in video quality.