Out of memory. use Adam? downsample?

[linrio]

1. I want to transfer higher piexl videos like 1k, 2K even 4k, however the size of my server's VRAM is 8GB (NV GTX 1070). With cudnn, the maximized size of image I can take from video is 1080x720p. Similar problem has been attention in Running out of memory #1.
2. jcjohson said in Memory Usage that: we can use Adam instead of L-BFGS. And how to used this method in here?
3. Also in OpenCL usage with NIN Model :

th neural_style.lua -style_image examples/inputs/picasso_selfport1907.jpg -content_image examples/inputs/brad_pitt.jpg -output_image profile.png -model_file models/nin_imagenet_conv.caffemodel -proto_file models/train_val.prototxt -gpu 0 -backend clnn -num_iterations 1000 -seed 123 -content_layers relu0,relu3,relu7,relu12 -style_layers relu0 ,relu3,relu7,relu12 -content_weight 10 -style_weight 1000 -image_size 512 -optimizer adam

And #1 @manuelruder suggested that:

th artistic_video.lua ... -model_file models/nin_imagenet_conv.caffemodel -proto_file models/train_val.prototxt -content_layers relu0,relu3,relu7,relu12 -style_layers relu0,relu3,relu7,relu12 -content_weight 10 -style_weight 1000 ...

Above methods might have effect.
4. How to downsample the video to reduce the memory?
5. I think the ability of above method is limited. How To reduce memory usage?

[linrio]

I have tried the NIN model jcjohnson, however, it runs slowly in 1080x720p video on GTX 1070 (8GB), 8 cores i7 CPU:

8 Intel(R) Core(TM) i7-6700 CPU @ 3.4GHz

[linrio]

NIN and Adam can reduce the usage of VRAM actually, however the result is disappointed. 👎

[ProGamerGov]

Adam just needs it's parameters adjusted to achieve good results: https://github.com/jcjohnson/neural-style/wiki/Fine-Tuning-The-Adam-Optimizer