Optimizing Render Output in DaVinci Resolve with Intel ARC A770

Table of Contents

• Introduction
• System Resources and File Types Overview
• DaVinci Resolve Output Options
• Comparing System Resource Usage
  • Baseline with Streaming Software
  • File Output with H.265
  • File Output with H.264
  • File Output with MPEG-4
• Comparing Rendering Times
• File Sizes Comparison
• Conclusion
• FAQ

Introduction

In this video, we will explore the impact of different file types and output options on system resources when using DaVinci Resolve. We will compare the usage of GPU and CPU during the rendering process and analyze the advantages and disadvantages of each file format. Additionally, we will discuss the relationship between file size and the quality of compression. Let's dive in and see which option suits your needs best.

System Resources and File Types Overview

Before we begin, let's understand the basics. When using video editing software like DaVinci Resolve, the rendering process requires the utilization of system resources such as the GPU and CPU. These resources play a crucial role in determining the speed and quality of the output file. Additionally, different file types, such as H.265, H.264, and MPEG-4, have varying characteristics that affect the distribution of resource usage.

DaVinci Resolve Output Options

DaVinci Resolve offers multiple output options for video files. Three commonly used file types are H.265, H.264, and MPEG-4. It's essential to understand the differences between these formats to make an informed decision about which one to use for your specific requirements.

Comparing System Resource Usage

Let's now analyze the system resource usage for each file type and output option in detail. We will compare the baseline resource utilization with the streaming software running, followed by individual assessments of rendering with H.265, H.264, and MPEG-4.

Baseline with Streaming Software

With the streaming software running, the GPU utilization is between 18% and 20%, primarily in the video decode segment. The CPU usage is around 6% for a 16-core, 32-thread Ryzen 3950X processor. This serves as our baseline for resource usage.

File Output with H.265

When rendering in H.265, the GPU usage increases significantly, reaching nearly 100%. The breakdown screen demonstrates that both regular video decode and video decode one are being utilized, with a total GPU utilization of 100%. The CPU usage also rises, but not as significantly. The render operation progresses at a rate of approximately 66-68% completion.

File Output with H.264

Switching to H.264, the processor becomes more intensively used. The 16-core processor experiences a substantial increase in utilization, while GPU usage decreases. The render operation continues at a similar pace, with 70% completion. Once the render is complete, the system returns to baseline.

File Output with MPEG-4

Rendering in MPEG-4 happens relatively quickly, showcasing a Blend of decent processor and GPU utilization. The processor usage stands at around 40%, while GPU utilization remains around 60%. This combination results in a render completion time of 40%, with the system reverting to baseline afterwards.

Comparing Rendering Times

In terms of rendering times, we observe that the newer file formats, such as H.265 and H.264, take longer than the older MPEG-4 format. Rendering in H.265 takes approximately 1 minute and 21 seconds, H.264 takes 53 seconds, and MPEG-4 takes only 26 seconds. Therefore, the complexity of the format directly affects the time required for rendering.

File Sizes Comparison

Now, let's take a look at the file sizes of the output files for each format. The H.265 file is approximately 168 megabytes, the H.264 file is around 279 megabytes, and the MPEG-4 file is about 335 megabytes. The evolution of codecs aims to minimize file sizes and reduce bandwidth usage while maintaining high-quality output. However, producing these newer formats may require more powerful and expensive hardware due to the increased compression demands.

Conclusion

In conclusion, the choice of file type and output option in DaVinci Resolve has a significant impact on system resource usage, rendering times, and file sizes. While the newer formats like H.265 and H.264 utilize GPU more extensively, the older MPEG-4 format strikes a balance between CPU and GPU usage. Additionally, the file sizes decrease with newer formats, optimizing bandwidth usage. It is crucial to consider these factors when selecting an output option that aligns with your specific needs and hardware capabilities.

FAQ

Q: Which file type offers the best balance between rendering time and file size? A: The MPEG-4 format provides a favorable balance between rendering time and file size. It offers relatively quick rendering times and produces smaller file sizes compared to H.265 and H.264.

Q: Does rendering in H.265 require more powerful hardware compared to other formats? A: Yes, rendering in H.265 often demands more powerful and expensive hardware due to its higher compression capabilities. The GPU utilization is extensive, requiring capable hardware to achieve optimal rendering speeds.

Q: Are there any advantages to using the older MPEG-4 format? A: Yes, the MPEG-4 format, despite being the oldest, still has advantages. It strikes a balance between CPU and GPU usage, resulting in efficient resource utilization. Additionally, it produces smaller file sizes, making it more suitable for bandwidth-constrained scenarios.

Resources:

• DaVinci Resolve
• Introduction to Video Codecs