Performance isn't really a major goal... Right now it processes video just a bit faster than realtime, so your 10 minute video will probably take about 10 minutes to render. This is highly dependent on your CPU though.
For better performance, both the source and target files should be on a fast disk. Copy MP4 files from the SD card to local disk first - it will be much quicker. Use M2 drives if you have them.
The dashboard is updated every 0.1 seconds, regardless of the frame rate of the video, so 10 frames/s in this chart means 1 second of video is processed in 1 second.
These indicative figures are from Ubuntu on Intel Core i7-6700K CPU @ 4.00GHz with NVIDIA GeForce GTX 750 Ti
Here nvtop shows ENC is 100% in use.
| Performance Option | Frames/s "null" | Frames/s normal | Frames/s --profile nvgpu |
|---|---|---|---|
| Default (python 3.8) | ~30 | ~10 | ~21 |
| PyPy | ~27 | ||
| Default + Pillow SIMD | ~60 | ~10 | ~25 |
These indicative figures are from Ubuntu on Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz with NVIDIA GeForce GTX 1650
Here nvtop shows that the ENC is only 25% in use, so further optimization would give benefit.
| Performance Option | Frames/s "null" | Frames/s normal | Frames/s --profile nvgpu |
|---|---|---|---|
| Default (python 3.8) | ~30 | ~18 | ~22 |
Using newer GPUs, the GPU is pretty much chilling, so perhaps using Pillow-SIMD will give a big boost.
Using the --profile option you can get a lot of extra performance out of the software. Please see the section on
FFMPEG profiles in docs/bin
You might be able to get some more performance out of the program by using pillow-simd. Installing it is a bit more complicated. You'll need a compiler etc. Follow the installation instructions at https://github.com/uploadcare/pillow-simd#pillow-simd
Short version:
venv/bin/pip uninstall pillow
venv/bin/pip install pillow-simd==8.3.2.post0The frame drawing rate is quite a bit faster, but won't make a huge difference unless GPU settings are used with ffmpeg.
No tests are run in this project with pillow-simd, so output may vary (but their tests are good, so I wouldn't expect any huge differences, if any)