Does not support H265 encoding, does not support 4K video encoding

### Describe the bug
1. Does not support h265 encoding.
2. Does not support 4K video encoding.

### Question 1
I am trying to do H265 encoding with the following code and it fails.

`await ffmpeg.run('-i', 'test.mp4' , '-vcodec' , 'libx265' , '-acodec' , 'aac' , '-b:v' , '3000k' , '-maxrate' , '4000k' , '-minrate' , '3000k' , '-s' , '1920x1080' , '-b:a' , '192k' , 'test_out.mp4');`

But it can be successful when using H264 encoding.

`await ffmpeg.run('-i', 'test.mp4' , '-vcodec' , 'libx264' , '-acodec' , 'aac' , '-b:v' , '3000k' , '-maxrate' , '4000k' , '-minrate' , '3000k' , '-s' , '1920x1080' , '-b:a' , '192k' , 'test_out.mp4');`

Maybe H265 encoding does not support multi-threading yet?


**Error screenshot**


### Question 2

At first I tried to convert 4K video to 1080P video

`await ffmpeg.run('-i', 'test.mp4' , '-vcodec' , 'libx264' , '-acodec' , 'aac' , '-b:v' , '3000k' , '-maxrate' , '4000k' , '-minrate' , '3000k' , '-s' , '1920x1080' , '-b:a' , '192k' , 'test_out.mp4');`

The program runs fine for a short time, but errors appear soon after (An error occurs when the program executes less than 1%)


Then I remove the width and height constraints, the error occurs immediately

`await ffmpeg.run('-i', 'test.mp4' , '-vcodec' , 'libx264' , '-acodec' , 'aac' , '-b:v' , '3000k' , '-maxrate' , '4000k' , '-minrate' , '3000k' , '-b:a' , '192k' , 'test_out.mp4');`

**Error screenshot**


I hid the website domain in the screenshot, it has nothing to do with the question

**Desktop:**
- OS: windows 10 22H2
- Browser: chrome 114.0.5735.134