# read.me # This temp generated video record of 360 video file set_1 # Gop=15, duration = 60s # multi bitrate 200k, 400k, 600k, 800k, 1000k // raw video: about 4 mins duration SharkShipwreck720p.mp4: downloaded raw 720p 360 video with audio; SharkShipwreck2160p.mp4: downloaded raw 2160p 360 video without audio; SharkShipwreck2160p.webm: downloaded raw 2160p 360 video without audio; Sahrk.mp4: downloaded raw 2160p 360 video with audio; // Key frame video(OPTIONAL) >ffmpeg -i SharkShipwreck2160p.mp4 -strict -2 -qscale 0 -intra keyoutput.mp4 keyoutput.mp4: generated from SharkShipwreck2160p.mp4, intra code video; //duration 1min video >ffmpeg -i keyoutput.mp4 -vcodec copy -acodec copy -ss 00:00:30 ¨Cto 00:01:30 output.mp4 ¨Cy output.mp4: generated from keyoutput.mp4, 2160p, without audio, 1800frames, 30fps; output1.mp4: generated from keyoutput.mp4, 2160p, with audio, 1800frames, 30fps; //change 3840x2048 -> 3840x1920(optional) >ffmpeg ¨CI output.mp4 ¨Cs 3840x1920 SharkShipwreck.mp4 SharkShipwreck.mp4: generated from output.mp4, framesize 3840x1920, duration 1min, without audio; SharkShipwreck1.mp4: generated from output.mp4, framesize 3840x1920, duration 1min, with audio; //change mp4 to yuv, to get 3840x1920 yuv >ffmpeg -i output.mp4 -f rawvideo -vcodec rawvideo -pix_fmt yuv420p -s 3840x1920 -r 30 rawvideo1920.yuv rawvideo1920.yuv yuv file generated from output.mp4, framesize 3840x1920, 30fps, without audio; //tile the yuv, 3840x1920, tile size: 480x480, [8x4]tiles >ffmpeg -f rawvideo -vcodec rawvideo -s 3840x1920 -r 30 -i rawvideo1920.yuv -filter:v "crop=480:480:0:0" w01-h01.yuv //use VideoCrop.py i from 1~8, j from 1~4 w[i]h[j].yuv tiled video, frame size 480x480, 1800 frames, 30fps //multi bitrate multi bitrate 200k, 400k, 600k, 800k, 1000k // >ffmpeg -f rawvideo -s 480x480 -r 30 -i w1h1.yuv -b:v 300k -q 1 -r 30 -vframes 1800 -g 15 -c:v libx265 w1h1.mp4 //use VideoMultiBitRate.py i from 1~8, j from 1~4 , k from [200k, 400k, 600k, 800k, 1000k] tiled_w[i]h[i]_[k].mp4 //DO NOT chunked //actually, in dataset one we do not chunked the tiled video(tiled_w[i]h[i]_[k].mp4), it is a duration 1min mp4, with different video bitrate, we use a classify prog to classify the file into different directory use VideoClassify.py