Oh yes, but that might be comparable to attention-based models for NLP, complexity-wise. Using C3D is quite common since 2015 actually: http://vlg.cs.dartmouth

Oh yes, but that might be comparable to attention-based models for NLP, complexity-wise. Using C3D is quite common since 2015 actually: http://vlg.cs.dartmouth.edu/c3d/ http://vlg.cs.dartmouth.edu/c3d/ https://arxiv.org/pdf/1412.0767.pdf https://arxiv.org/pdf/1412.0767.pdf Training a great model is expensive these days, FB routinely pays 6 figures per training run.