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use avconv to extract frames from mp4 videos

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j 2013-10-02 10:56:30 +00:00
parent 9ac3342acd
commit 8917a71f47
1 changed files with 19 additions and 7 deletions
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24
pandora/archive/extract.py
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@ -278,20 +278,32 @@ def run_command(cmd, timeout=10):
return p.returncode return p.returncode
def frame(videoFile, frame, position, height=128, redo=False): def frame(video, frame, position, height=128, redo=False):
''' '''
params: params:
videoFile input video input
frame output frame output
position as float in seconds position as float in seconds
height of frame height of frame
redo boolean to extract file even if it exists redo boolean to extract file even if it exists
''' '''
if exists(videoFile): if exists(video):
frameFolder = os.path.dirname(frame) folder = os.path.dirname(frame)
if redo or not exists(frame): if redo or not exists(frame):
ox.makedirs(frameFolder) ox.makedirs(folder)
cmd = ['oxframe', '-i', videoFile, '-o', frame, if video.endswith('.mp4'):
cmd = [
AVCONV, '-y',
'-ss', str(position),
'-i', video,
'-an', '-vframes', '1',
'-vf', 'scale=-1:%s' % height
]
if not frame.endswith('.png'):
cmd += ['-f', 'mjpeg']
cmd += [frame]
else:
cmd = ['oxframe', '-i', video, '-o', frame,
'-p', str(position), '-y', str(height)] '-p', str(position), '-y', str(height)]
run_command(cmd) run_command(cmd)