Unable to process RAW .MOV file created from iPhoneX. pthread error thrown

[syedadeel2]

Describe the bug Using this to convert videos, its working so far good except any raw format. I created short 8 seconds vid via iPhoneX which is .mov, yun420p and it went to 22 frames and thrown pthread error. Not sure how to fix it.

To Reproduce Steps to reproduce the behavior:

1. Record any video from iPhoneX with 4K at 30 FPS
2. Open the demo app for test https://ffmpegwasm.netlify.app/#demo (I have created my own using react but demo have same issue)
3. Open the DevTool and you will see the error.

Expected behavior As I tried to convert that format with same command on my windows via cmd its working good, but on web its not.

Screenshots

Desktop (please complete the following information):

• OS: Windows
• Browser chrome

Smartphone (please complete the following information):

• Device: iPhoneX
• OS: iOS14
• Browser Safari & Chrome

Additional context Add any other context about the problem here.

[syedadeel2]

Adding someone also did a test and that person wrote his/her experience on website here:

Same issue as mine https://cocktailmake.github.io/posts/ffmpeg-wasm/

[coder-xiaotian]

Is it solved?

[coder-xiaotian]

Hey bro! I find a way! Adding the "-preset ultrafast" argument can solve this problem.

[iketiunn]

wow, oom error is gone as long as you set the -preset above and including superfast