This project utilizes parallel computing to improve the efficiency of post-processing video footage.
The code currently supports post-processing in up to 3 dimensions, using convolution filters.
###How To Process A Video:
-
Find a video you want to process, and put it in
./input_videos -
Download and install FFmpeg
-
Use FFmpeg to break the video into frames. This code breaks off the first 20 frames of video
sample_video:
ffmpeg -i input_videos/sample_video.mp4 -vframes 20 infiles/tmp%03d.ppm
- Choose an operation, compile and run it
- Serial (slower execution)
- 1D Convolution (Black & White Recoloring):
make serial-bw, then./serial-bw - 2D Convolution:
make serial-convolution, then./serial-convolution - 3D Convolution:
cd 3Dconvolution,make serial, then./ser_3D_conv
- 1D Convolution (Black & White Recoloring):
- Parallel (faster execution, requires CUDA and a valid GPU)
- 1D Convolution (Black & White Recoloring):
make bandw, then./bandw - 2D Convolution:
make convolution, then./convolution - 3D Convolution:
cd 3Dconvolution,make parallel, then./par_3D_conv
- 1D Convolution (Black & White Recoloring):
Where stride_len is an optional parameter that can be used to control the number of frames stored in memory at one time. The default value is 20.
- Use FFmpeg to combine the output frames into a video:
ffmpeg -framerate 24 -i outfiles/tmp%03d.ppm -c:v libx264 -r 30 -pix_fmt yuv420p output_video.mp4