Video-HEVC vs AVC

[goddi]

Greetings,

The GoPro 11 produces HEVC formatted video files. I see that PTE will play them.

However, the HEVC are supposed to be more compact but still pretty large. If I Convert them in PTE, they come out substantially smaller.

In this example, the HEVC file is 40.7MBs. When Converted, it is only 5.86sMBs.

I don't really see any difference in the quality. Is there any reason not to Convert the HEVC files? I do see the bit rate is reduced as expected. I am concerned about the final size of my projects so I'm more likely to Convert all of my GoPro videos.

Gary

 

[Igor]

Hi Gary,

Under the same comparison conditions, HEVC encoders produce on 30-50% smaller video file than AVC (H.264) for the same visual quality.

However real-time hardware encoders (in cameras) do not work as efficiently as software encoders on a computer. Hardware encoders compensate reduced quality by increasing a bitrate.

PTE AV Studio by default uses more progressive encoding method - constant quality. It means that a video encoder analyzes every frame (content) and smartely increase or decrease bitrate for a series of video frames according content.

A similar example, saving a JPEG image. You set a desired visual quality from "1" to "11" and resulting file size will depend on how many fine details are shown in your picture.