def encode(infile, options):
"""Encode infile (a MultimediaFile) with ffmpeg, using the given options."""
cmd = 'ffmpeg'
cmd += ' -i "%s"' % infile.filename
if options['format'] in ['vcd', 'svcd', 'dvd']:
cmd += ' -tvstd %s' % options['tvsys']
cmd += ' -target %s-%s' % (options['format'], options['tvsys'])
cmd += ' -r %g' % options['fps']
cmd += ' -ar %s' % options['samprate']
# Convert scale/expand to ffmpeg's padding system
if options['scale']:
cmd += ' -s %sx%s' % options['scale']
if options['expand']:
e_width, e_height = options['expand']
s_width, s_height = options['scale']
h_pad = (e_width - s_width) / 2
v_pad = (e_height - s_height) / 2
if h_pad > 0:
cmd += ' -padleft %s -padright %s' % (h_pad, h_pad)
if v_pad > 0:
cmd += ' -padtop %s -padbottom %s' % (v_pad, v_pad)
if options['widescreen']:
cmd += ' -aspect 16:9'
else:
cmd += ' -aspect 4:3'
cmd += ' -o "%s"' % options['out']
script = Script('ffmpeg_encode')
script.append(cmd)
script.run()
return script
def __init__(self, options):
self.options = options
self.script = Script('TextMenu')
basename = self.options['out']
# TODO: Store intermediate images in a temp folder
self.bg_canvas = basename + '.bg_canvas.png'
self.fg_canvas = basename + '.fg_canvas.png'
self.fg_highlight = basename + '.fg_highlight.png'
self.fg_selection = basename + '.fg_selection.png'
print "Creating a menu with %s titles" % len(options['titles'])
self.build_reusables()
self.draw_background_canvas()
self.draw_background_layer()
self.draw_highlight_layer()
self.draw_selection_layer()
self.gen_video()
self.gen_audio()
self.gen_mpeg()
self.script.run()
def encode(infile, options):
"""Return a Script to encode infile (a MultimediaFile) with mencoder,
using the given options."""
cmd = 'mencoder'
cmd += ' "%s" -o "%s"' % (infile.filename, options['out'])
cmd += ' -oac lavc -ovc lavc -of mpeg'
# Format
if options['format'] in ['vcd', 'svcd']:
cmd += ' -mpegopts format=x%s' % options['format']
else:
cmd += ' -mpegopts format=dvd'
# Audio settings
# Adjust sampling rate
# TODO: Don't resample unless needed
cmd += ' -srate %s' % options['samprate']
cmd += ' -af lavcresample=%s' % options['samprate']
# Video codec
if options['format'] == 'vcd':
lavcopts = 'vcodec=mpeg1video'
else:
lavcopts = 'vcodec=mpeg2video'
# Audio codec
if options['format'] in ['vcd', 'svcd']:
lavcopts += ':acodec=mp2'
else:
lavcopts += ':acodec=ac3'
lavcopts += ':abitrate=%s:vbitrate=%s' % \
(options['abitrate'], options['vbitrate'])
# Maximum video bitrate
lavcopts += ':vrc_maxrate=%s' % options['vbitrate']
if options['format'] == 'vcd':
lavcopts += ':vrc_buf_size=327'
elif options['format'] == 'svcd':
lavcopts += ':vrc_buf_size=917'
else:
lavcopts += ':vrc_buf_size=1835'
# Set appropriate target aspect
if options['widescreen']:
lavcopts += ':aspect=16/9'
else:
lavcopts += ':aspect=4/3'
# Put all lavcopts together
cmd += ' -lavcopts %s' % lavcopts
# FPS
if options['tvsys'] == 'pal':
cmd += ' -ofps 25/1'
elif options['tvsys'] == 'ntsc':
cmd += ' -ofps 30000/1001' # ~= 29.97
# Scale/expand to fit target frame
if options['scale']:
vfilter = 'scale=%s:%s' % options['scale']
# Expand is not done unless also scaling
if options['expand']:
vfilter += ',expand=%s:%s' % options['expand']
cmd += ' -vf ' + vfilter
# Create the Script, and add the single command to it
script = Script('mencoder_encode')
script.append(cmd)
script.run()
return script
