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Improve create_dataset, video_to_slomo #60

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Improve create_dataset, video_to_slomo #60

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cfb7ec8
Use subprocess instead of os.system
tobbez Oct 12, 2019
0b4d246
create_dataset: Increase frame file name lengths
tobbez Oct 12, 2019
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6 changes: 4 additions & 2 deletions data/create_dataset.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
import os
import os.path
from shutil import rmtree, move
import subprocess
import random

# For parsing commandline arguments
Expand Down Expand Up @@ -37,8 +38,9 @@ def extract_frames(videos, inDir, outDir):

for video in videos:
os.mkdir(os.path.join(outDir, os.path.splitext(video)[0]))
retn = os.system('{} -i {} -vf scale={}:{} -vsync 0 -qscale:v 2 {}/%04d.jpg'.format(os.path.join(args.ffmpeg_dir, "ffmpeg"), os.path.join(inDir, video), args.img_width, args.img_height, os.path.join(outDir, os.path.splitext(video)[0])))
if retn:
try:
subprocess.check_call([os.path.join(args.ffmpeg_dir, "ffmpeg"), '-i', os.path.join(inDir, video), '-vf', 'scale={}:{}'.format(args.img_width, args.img_height), '-vsync', '0', '-qscale:v', '2', '{}/%09d.jpg'.format(os.path.join(outDir, os.path.splitext(video)[0]))])
except subprocess.CalledProcessError:
print("Error converting file:{}. Exiting.".format(video))


Expand Down
26 changes: 13 additions & 13 deletions video_to_slomo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
import argparse
import os
import os.path
import subprocess
import ctypes
from shutil import rmtree, move
from PIL import Image
Expand Down Expand Up @@ -66,21 +67,20 @@ def extract_frames(video, outDir):
"""


error = ""
print('{} -i {} -vsync 0 -qscale:v 2 {}/%06d.jpg'.format(os.path.join(args.ffmpeg_dir, "ffmpeg"), video, outDir))
retn = os.system('{} -i {} -vsync 0 -qscale:v 2 {}/%06d.jpg'.format(os.path.join(args.ffmpeg_dir, "ffmpeg"), video, outDir))
if retn:
error = "Error converting file:{}. Exiting.".format(video)
return error
cmd = [os.path.join(args.ffmpeg_dir, "ffmpeg"), '-i', video, '-vsync', '0', '-qscale:v', '2', '{}/%06d.jpg'.format(outDir)]
print(' '.join(cmd))
try:
subprocess.check_call(cmd)
except CalledProcessError:
return "Error converting file:{}. Exiting.".format(video)

def create_video(dir):
error = ""
print('{} -r {} -i {}/%d.jpg -qscale:v 2 {}'.format(os.path.join(args.ffmpeg_dir, "ffmpeg"), args.fps, dir, args.output))
retn = os.system('{} -r {} -i {}/%d.jpg -crf 17 -vcodec libx264 {}'.format(os.path.join(args.ffmpeg_dir, "ffmpeg"), args.fps, dir, args.output))
if retn:
error = "Error creating output video. Exiting."
return error

cmd = [os.path.join(args.ffmpeg_dir, "ffmpeg"), '-r', str(args.fps), '-i', '{}/%d.jpg'.format(dir), '-crf', '17', '-vcodec', 'libx264', args.output]
print(' '.join(cmd))
try:
subprocess.check_call(cmd)
except CalledProcessError:
return "Error creating output video. Exiting."

def main():
# Check if arguments are okay
Expand Down