---
title: Configuring Transcoding Profiles for NDI Sources
slug: zixi-broadcaster-zec-current-version/configuring-transcoding-profiles-for-ndi-sources
docTags: 
createdAt: 2024-12-26T16:40:21.854Z
---

Before creating the NDI Input in Zixi Broadcaster, you must configure at least one transcoding profile that meets the following requirements:

- **Disable Copy GOP from source** - NDI sources can be transcoded using any of the available transcoding profiles; however, it is **NOT possible** to enable the **Copy GOP from source** feature. Since all frames in the original NDI source are uncompressed, Zixi cannot know which frames were i-frames in the stream, so the GOP length should be configured in the **GOP \[frames]** parameter of the transcoding profile.   
- **No Keep Original **- when configuring the stream, it is possible to remove the video or audio from the stream; however, it is **NOT possible** to keep the original video or audio, as they are originally uncompressed.
- **No RAW Video/Audio **- transcoding profiles with **RAW Video** and/or **RAW Audio** will be filtered out and will not appear in the **Video profile**/**Audio Profile** fields on the NDI Input screen.
- **No Keep Aspect Ratio** - NDI inputs can be resized but not padded with black bars. Enabling the “Keep aspect ratio” checkbox in the transcoding profile will cause the transcoder to fail.

For detailed instructions on how to configure transcoding profiles, see the [Broadcaster Transcoder](docId\:XJvL7z1uOgYMiCXZd9Sxq) section.