merge changes to encoding setup from pandora
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parent
fc72c48908
commit
5557ac5e15
1 changed files with 74 additions and 11 deletions
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@ -64,6 +64,16 @@ def frame(video, target, position):
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r = run_command(cmd)
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return r == 0
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def supported_formats():
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p = subprocess.Popen([command('ffmpeg'), '-codecs'],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = p.communicate()
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return {
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#'ogg': 'libtheora' in stdout and 'libvorbis' in stdout,
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'webm': 'libvpx' in stdout and 'libvorbis' in stdout,
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'mp4': 'libx264' in stdout and 'libvo_aacenc' in stdout,
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}
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def video_cmd(video, target, profile, info):
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if not os.path.exists(target):
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@ -169,6 +179,47 @@ def video_cmd(video, target, profile, info):
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'-lag-in-frames', '16',
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'-auto-alt-ref', '1',
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]
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if format == 'mp4':
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#quicktime does not support bpyramid
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'''
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video_settings += [
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'-vcodec', 'libx264',
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'-flags', '+loop+mv4',
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'-cmp', '256',
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'-partitions', '+parti4x4+parti8x8+partp4x4+partp8x8+partb8x8',
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'-me_method', 'hex',
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'-subq', '7',
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'-trellis', '1',
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'-refs', '5',
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'-bf', '3',
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'-flags2', '+bpyramid+wpred+mixed_refs+dct8x8',
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'-coder', '1',
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'-me_range', '16',
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'-keyint_min', '25', #FIXME: should this be related to fps?
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'-sc_threshold','40',
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'-i_qfactor', '0.71',
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'-qmin', '10', '-qmax', '51',
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'-qdiff', '4'
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]
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'''
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video_settings += [
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'-vcodec', 'libx264',
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'-flags', '+loop+mv4',
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'-cmp', '256',
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'-partitions', '+parti4x4+parti8x8+partp4x4+partp8x8+partb8x8',
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'-me_method', 'hex',
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'-subq', '7',
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'-trellis', '1',
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'-refs', '5',
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'-bf', '0',
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'-flags2', '+mixed_refs',
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'-coder', '0',
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'-me_range', '16',
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'-sc_threshold', '40',
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'-i_qfactor', '0.71',
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'-qmin', '10', '-qmax', '51',
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'-qdiff', '4'
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]
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video_settings += ['-map', '0:%s,0:0'%info['video'][0]['id']]
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else:
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video_settings = ['-vn']
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@ -185,31 +236,41 @@ def video_cmd(video, target, profile, info):
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audio_settings += ['-ac', str(ac)]
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if audiobitrate:
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audio_settings += ['-ab', audiobitrate]
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audio_settings +=['-acodec', 'libvorbis']
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if format == 'mp4':
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audio_settings += ['-acodec', 'libvo_aacenc']
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else:
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audio_settings += ['-acodec', 'libvorbis']
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else:
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audio_settings = ['-an']
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cmd = [command('ffmpeg'), '-y', '-i', video, '-threads', '4'] \
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+ audio_settings \
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+ video_settings \
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+ ['-f','webm', target]
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+ video_settings
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if format == 'webm':
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cmd += ['-f', 'webm', target]
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elif format == 'mp4':
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#mp4 needs postprocessing(qt-faststart), write to temp file
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cmd += ["%s.mp4" % target]
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else:
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cmd += [target]
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return cmd
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def video(video, target, profile, info):
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profile, format = profile.split('.')
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cmd = video_cmd(video, target, profile, info)
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#r = run_command(cmd, -1)
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p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
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'''
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p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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line = p.stderr.readline()
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while line:
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if line.startswith('frame='):
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frames = line.split('=')[1].strip().split(' ')[0]
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line = p.stderr.readline()
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'''
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try:
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p.wait()
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r = p.returncode
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if format == 'mp4':
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cmd = [command('qt-faststart'), "%s.mp4" % target, target]
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p = subprocess.Popen(cmd, stdin=subprocess.PIPE,
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stdout=open('/dev/null', 'w'),
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stderr=subprocess.STDOUT)
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p.communicate()
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os.unlink("%s.mp4" % target)
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print 'Input:\t', video
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print 'Output:\t', target
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except KeyboardInterrupt:
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@ -218,5 +279,7 @@ def video(video, target, profile, info):
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print "\n\ncleanup unfinished encoding:\nremoving", target
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print "\n"
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os.unlink(target)
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if format == 'mp4' and os.path.exists("%s.mp4" % target):
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os.unlink("%s.mp4" % target)
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sys.exit(1)
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return r == 0
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