---
title: Source History Elementary Stream Bitrates
slug: zen-master/source-history-elementary-stream-bitrates
docTags: 
createdAt: 2024-12-27T17:51:53.232Z
---

This graph shows the bitrates for each individual PID over time.

![History of bitrates for individual PIDs](https://api.archbee.com/api/optimize/mzxtTQEvCNIdUNgF2kuwJ/X8udguq073KFl1rprmc0F_image.png)

:::hint{type="info"}
The network bitrate can be lower than the sum of elemental stream bitrates because if it's a zixi stream,  the network data is compressed, whereas, the elementary stream bitrate shows the uncompressed values. 
:::

The y-axis measures the bitrate level of the stream in Kb/s.