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ubicomplab / rPPG-Toolbox

rPPG-Toolbox: Deep Remote PPG Toolbox (NeurIPS 2023)
https://arxiv.org/abs/2210.00716
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Regarding the issue of video data rate #285

Closed moon-ligh closed 3 months ago

moon-ligh commented 3 months ago

Hello,May I ask if the video on the UBFC dataset takes up a relatively large amount of space, with a video speed of 2188322kbps UBFC However, the video I recorded myself has a speed of approximately 3000kbps. zijian In terms of the difference in video quality, how would it affect the results if I used pre trained weights on UBFC to predict my own videos? Can signals still be accurately predicted?

yahskapar commented 3 months ago

Hi @moon-ligh,

Typically speaking, lower quality videos with lower bitrates can make it harder to get a reasonable signal measurement, but we cannot really predict the performance difference aside from predicting it will get generally worse. I recommend you evaluate on your own videos as you mentioned and keep the compression differences in mind as a part of your analysis. You can also check out section 9.5 of this review article and some of the referenced work, including this for more details regarding the effects of compression.

moon-ligh commented 3 months ago

Hi @moon-ligh,

Typically speaking, lower quality videos with lower bitrates can make it harder to get a reasonable signal measurement, but we cannot really predict the performance difference aside from predicting it will get generally worse. I recommend you evaluate on your own videos as you mentioned and keep the compression differences in mind as a part of your analysis. You can also check out section 9.5 of this review article and some of the referenced work, including this for more details regarding the effects of compression.

Okay, thank you for your reply！

yahskapar commented 3 months ago

No problem!

Closing this issue now since the original question was answered, but feel free to make a new one if you have any other questions or run into problems with the toolbox.