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add some encoding options: crop, trim, aspect

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j 2015-11-12 16:15:02 +00:00
parent 310343c81c
commit b7cfcfa182
1 changed files with 33 additions and 4 deletions
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37
pandora/archive/extract.py
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@ -60,7 +60,9 @@ def supported_formats():
'mp4': 'libx264' in stdout and 'DEA.L. aac' in stdout,
}
def stream(video, target, profile, info, audio_track=0):
def stream(video, target, profile, info, audio_track=0, flags={}):
if not os.path.exists(target):
ox.makedirs(os.path.dirname(target))
@ -144,6 +146,7 @@ def stream(video, target, profile, info, audio_track=0):
audiobitrate = '22k'
audiochannels = 1
if info['video'] and 'display_aspect_ratio' in info['video'][0]:
# dont make video bigger
height = min(height, info['video'][0]['height'])
@ -155,17 +158,43 @@ def stream(video, target, profile, info, audio_track=0):
width = int(dar * height)
width += width % 2
bitrate = height*width*fps*bpp/1000
aspect = dar.ratio
#use 1:1 pixel aspect ratio if dar is close to that
if abs(width/height - dar) < 0.02:
aspect = '%s:%s' % (width, height)
video_settings = [
# parse extra falgs
if 'crop' in flags:
h = info['video'][0]['height'] - flags['crop']['top'] - flags['crop']['bottom']
w = info['video'][0]['width'] - flags['crop']['left'] - flags['crop']['right']
x = flags['crop']['left']
y = flags['crop']['top']
crop = ',crop=w=%s:h=%s:x=%s:y=%s' (w, h, x, y)
aspect = dar * (info['video'][0]['width'] / info['video'][0]['height']) * (w/h)
if abs(w/h - aspect) < 0.02:
aspect = '%s:%s' % (w, h)
else:
crop = ''
if 'trim' in flags:
trim = []
if 'in' in flags['trim']:
start = flags['trim']['in']
trim += ['-ss', str(start)]
if 'out' in flags['trim']:
t = info['duration'] - flags['trim'].get('in', 0) - flags['trim']['out']
trim += ['-t', str(t)]
else:
trim = []
if 'aspect' in flags:
aspect = flags['aspect']
bitrate = height*width*fps*bpp/1000
video_settings = trim + [
'-vb', '%dk'%bitrate,
'-aspect', aspect,
#'-vf', 'yadif',
'-vf', 'hqdn3d,scale=%s:%s'%(width, height),
'-vf', 'hqdn3d%s,scale=%s:%s'%(crop, width, height),
'-g', '%d' % int(fps*5),
]
if format == 'webm':