In multithreading mode(core-mt), there are still some issues present

[xifanii]

Describe the bug Thank you very much for the updates in version 0.12.8, which have resolved many issues! I tried running it in 'react-vite-app' and it worked fine with the original sample files. However, when I adapted it to replace the sample with my own AVI video(bigger size), it didn't complete the task when using the core-mt multithreading mode. There were no issues when I didn't use the multithreading mode.

my sample file: stock-footage.avi.zip

Screenshots Change example code:

When using core-mt(work fail):

When using core(work success):

Desktop (please complete the following information):

• OS: macOS Monterey 12.3
• Browser: Chrome 119.0.6045.159 (arm64)
• Version: 0.12.8

[foureight84]

I am currently facing the same a similar issue with with core-mt on nextjs. Transcoding works as expected on single thread but when I switch to the multithread library it seems to just stops after loading the video file.

• OS: Windows 11 23H2
• Browser: Chrome 120.0.6099.111 (Official Build) (64-bit)
• Version: ~0.12.9 (current master branch) ffmpeg 5.1.4

[foureight84]

Describe the bug Thank you very much for the updates in version 0.12.8, which have resolved many issues! I tried running it in 'react-vite-app' and it worked fine with the original sample files. However, when I adapted it to replace the sample with my own AVI video(bigger size), it didn't complete the task when using the core-mt multithreading mode. There were no issues when I didn't use the multithreading mode.

my sample file: stock-footage.avi.zip

Screenshots Change example code: When using core-mt(work fail): When using core(work success):

Desktop (please complete the following information):

• OS: macOS Monterey 12.3
• Browser: Chrome 119.0.6045.159 (arm64)
• Version: 0.12.8

set "-threads", "4" flags to your ffmpeg.exec. This ended up working for me. https://github.com/ffmpegwasm/ffmpeg.wasm/issues/597#issuecomment-1809161507

[xifanii]

Describe the bug Thank you very much for the updates in version 0.12.8, which have resolved many issues! I tried running it in 'react-vite-app' and it worked fine with the original sample files. However, when I adapted it to replace the sample with my own AVI video(bigger size), it didn't complete the task when using the core-mt multithreading mode. There were no issues when I didn't use the multithreading mode. my sample file: stock-footage.avi.zip Screenshots Change example code: When using core-mt(work fail): When using core(work success): Desktop (please complete the following information):

• OS: macOS Monterey 12.3
• Browser: Chrome 119.0.6045.159 (arm64)
• Version: 0.12.8

set "-threads", "4" flags to your ffmpeg.exec. This ended up working for me. #597 (comment) It doesn't work for me

[ongnxco]

Its work for me

ffmpeg -i input.avi -c:v copy -c:a copy OUTPUT.mp4

[anujpahade]

Same issue. The playground example for multi-threading doesn't work on Google Chrome. It works fine on Firefox.

Single threaded version works on both.