plugins/video/transcode.py

   1 import logging
   2 import math
   3 import os
   4 import re
   5 import shutil
   6 import subprocess
   7 import sys
   8 import tempfile
   9 import time
  10
  11 import lrucache
  12 import config
  13 from plugin import GetPlugin
  14
  15 logger = logging.getLogger('pyTivo.video.transcode')
  16
  17 info_cache = lrucache.LRUCache(1000)
  18 videotest = os.path.join(os.path.dirname(__file__), 'videotest.mpg')
  19
  20 BAD_MPEG_FPS = ['15.00']
  21
  22 def ffmpeg_path():
  23     return config.get('Server', 'ffmpeg')
  24
  25 # XXX BIG HACK
  26 # subprocess is broken for me on windows so super hack
  27 def patchSubprocess():
  28     o = subprocess.Popen._make_inheritable
  29
  30     def _make_inheritable(self, handle):
  31         if not handle: return subprocess.GetCurrentProcess()
  32         return o(self, handle)
  33
  34     subprocess.Popen._make_inheritable = _make_inheritable
  35 mswindows = (sys.platform == "win32")
  36 if mswindows:
  37     patchSubprocess()
  38
  39 def output_video(inFile, outFile, tsn=''):
  40     if tivo_compatible(inFile, tsn)[0]:
  41         logger.debug('%s is tivo compatible' % inFile)
  42         f = file(inFile, 'rb')
  43         shutil.copyfileobj(f, outFile)
  44         f.close()
  45     else:
  46         logger.debug('%s is not tivo compatible' % inFile)
  47         transcode(False, inFile, outFile, tsn)
  48
  49 def transcode(isQuery, inFile, outFile, tsn=''):
  50     settings = {'video_codec': select_videocodec(tsn),
  51                 'video_br': select_videobr(inFile, tsn),
  52                 'video_fps': select_videofps(inFile, tsn),
  53                 'max_video_br': select_maxvideobr(),
  54                 'buff_size': select_buffsize(tsn),
  55                 'aspect_ratio': ' '.join(select_aspect(inFile, tsn)),
  56                 'audio_br': select_audiobr(tsn),
  57                 'audio_fr': select_audiofr(inFile, tsn),
  58                 'audio_ch': select_audioch(tsn),
  59                 'audio_codec': select_audiocodec(isQuery, inFile, tsn),
  60                 'audio_lang': select_audiolang(inFile, tsn),
  61                 'ffmpeg_pram': select_ffmpegprams(tsn),
  62                 'format': select_format(tsn)}
  63
  64     if isQuery:
  65         return settings
  66
  67     cmd_string = config.getFFmpegTemplate(tsn) % settings
  68
  69     cmd = [ffmpeg_path(), '-i', inFile] + cmd_string.split()
  70     logging.debug('transcoding to tivo model ' + tsn[:3] +
  71                   ' using ffmpeg command:')
  72     logging.debug(' '.join(cmd))
  73     ffmpeg = subprocess.Popen(cmd, bufsize=(512 * 1024),
  74                               stdout=subprocess.PIPE)
  75     try:
  76         shutil.copyfileobj(ffmpeg.stdout, outFile)
  77     except:
  78         kill(ffmpeg.pid)
  79
  80 def select_audiocodec(isQuery, inFile, tsn=''):
  81     # Default, compatible with all TiVo's
  82     codec = 'ac3'
  83     vInfo = video_info(inFile)
  84     codectype = vInfo['vCodec']
  85     if config.getAudioCodec(tsn) == None:
  86         if vInfo['aCodec'] in ('ac3', 'liba52', 'mp2'):
  87             if vInfo['aKbps'] == None:
  88                 if not isQuery:
  89                     cmd_string = ('-y -vcodec mpeg2video -r 29.97 ' +
  90                                   '-b 1000k -acodec copy ' +
  91                                   select_audiolang(inFile, tsn) +
  92                                   ' -t 00:00:01 -f vob -')
  93                     if video_check(inFile, cmd_string):
  94                         vInfo =  video_info(videotest)
  95                 else:
  96                     codec = 'TBD'
  97             if (not vInfo['aKbps'] == None and
  98                 int(vInfo['aKbps']) <= config.getMaxAudioBR(tsn)):
  99                 # compatible codec and bitrate, do not reencode audio
 100                 codec = 'copy'
 101     else:
 102         codec = config.getAudioCodec(tsn)
 103     copyts = ' -copyts'
 104     if ((codec == 'copy' and config.getCopyTS(tsn).lower() == 'none'
 105          and codectype == 'mpeg2video') or
 106         config.getCopyTS(tsn).lower() == 'false'):
 107         copyts = ''
 108     return '-acodec ' + codec + copyts
 109
 110 def select_audiofr(inFile, tsn):
 111     freq = '48000'  #default
 112     vInfo = video_info(inFile)
 113     if not vInfo['aFreq'] == None and vInfo['aFreq'] in ('44100', '48000'):
 114         # compatible frequency
 115         freq = vInfo['aFreq']
 116     if config.getAudioFR(tsn) != None:
 117         freq = config.getAudioFR(tsn)
 118     return '-ar ' + freq
 119
 120 def select_audioch(tsn):
 121     ch = config.getAudioCH(tsn)
 122     if ch:
 123         return '-ac ' + ch
 124     return ''
 125
 126 def select_audiolang(inFile, tsn):
 127     vInfo =  video_info(inFile)
 128     if config.getAudioLang(tsn) != None and vInfo['mapVideo'] != None:
 129         stream = vInfo['mapAudio'][0][0]
 130         langmatch = []
 131         for lang in config.getAudioLang(tsn).replace(' ','').lower().split(','):
 132             for s, l in vInfo['mapAudio']:
 133                 if lang in s + l.replace(' ','').lower():
 134                     langmatch.append(s)
 135                     stream = s
 136                     break
 137             if langmatch: break
 138         if stream is not '':
 139             return '-map ' + vInfo['mapVideo'] + ' -map ' + stream
 140     return ''
 141
 142 def select_videofps(inFile, tsn):
 143     vInfo =  video_info(inFile)
 144     fps = '-r 29.97'  # default
 145     if config.isHDtivo(tsn) and vInfo['vFps'] not in BAD_MPEG_FPS:
 146         fps = ' '
 147     if config.getVideoFPS(tsn) != None:
 148         fps = '-r ' + config.getVideoFPS(tsn)
 149     return fps
 150
 151 def select_videocodec(tsn):
 152     codec = config.getVideoCodec(tsn)
 153     if not codec:
 154         codec = 'mpeg2video'  # default
 155     return '-vcodec ' + codec
 156
 157 def select_videobr(inFile, tsn):
 158     return '-b ' + str(select_videostr(inFile, tsn) / 1000) + 'k'
 159
 160 def select_videostr(inFile, tsn):
 161     video_str = config.strtod(config.getVideoBR(tsn))
 162     if config.isHDtivo(tsn):
 163         vInfo =  video_info(inFile)
 164         if vInfo['kbps'] != None and config.getVideoPCT() > 0:
 165             video_percent = int(vInfo['kbps']) * 10 * config.getVideoPCT()
 166             video_str = max(video_str, video_percent)
 167     video_str = int(min(config.strtod(config.getMaxVideoBR()) * 0.95,
 168                         video_str))
 169     return video_str
 170
 171 def select_audiobr(tsn):
 172     return '-ab ' + config.getAudioBR(tsn)
 173
 174 def select_maxvideobr():
 175     return '-maxrate ' + config.getMaxVideoBR()
 176
 177 def select_buffsize(tsn):
 178     return '-bufsize ' + config.getBuffSize(tsn)
 179
 180 def select_ffmpegprams(tsn):
 181     params = config.getFFmpegPrams(tsn)
 182     if not params:
 183         params = ''
 184     return params
 185
 186 def select_format(tsn):
 187     fmt = config.getFormat(tsn)
 188     if not fmt:
 189         fmt = 'vob'
 190     return '-f %s -' % fmt
 191
 192 def select_aspect(inFile, tsn = ''):
 193     TIVO_WIDTH = config.getTivoWidth(tsn)
 194     TIVO_HEIGHT = config.getTivoHeight(tsn)
 195
 196     vInfo =  video_info(inFile)
 197
 198     logging.debug('tsn: %s' % tsn)
 199
 200     aspect169 = config.get169Setting(tsn)
 201
 202     logging.debug('aspect169: %s' % aspect169)
 203
 204     optres = config.getOptres(tsn)
 205
 206     logging.debug('optres: %s' % optres)
 207
 208     if optres:
 209         optHeight = config.nearestTivoHeight(vInfo['vHeight'])
 210         optWidth = config.nearestTivoWidth(vInfo['vWidth'])
 211         if optHeight < TIVO_HEIGHT:
 212             TIVO_HEIGHT = optHeight
 213         if optWidth < TIVO_WIDTH:
 214             TIVO_WIDTH = optWidth
 215
 216     d = gcd(vInfo['vHeight'], vInfo['vWidth'])
 217     ratio = vInfo['vWidth'] * 100 / vInfo['vHeight']
 218     rheight, rwidth = vInfo['vHeight'] / d, vInfo['vWidth'] / d
 219
 220     logger.debug(('File=%s vCodec=%s vWidth=%s vHeight=%s vFps=%s ' +
 221                   'millisecs=%s ratio=%s rheight=%s rwidth=%s ' +
 222                   'TIVO_HEIGHT=%s TIVO_WIDTH=%s') % (inFile,
 223                   vInfo['vCodec'], vInfo['vWidth'], vInfo['vHeight'],
 224                   vInfo['vFps'], vInfo['millisecs'], ratio, rheight,
 225                   rwidth, TIVO_HEIGHT, TIVO_WIDTH))
 226
 227     multiplier16by9 = (16.0 * TIVO_HEIGHT) / (9.0 * TIVO_WIDTH)
 228     multiplier4by3  =  (4.0 * TIVO_HEIGHT) / (3.0 * TIVO_WIDTH)
 229
 230     if config.isHDtivo(tsn) and not optres:
 231         if config.getPixelAR(0):
 232             if vInfo['par2'] == None:
 233                 npar = config.getPixelAR(1)
 234             else:
 235                 npar = vInfo['par2']
 236
 237             # adjust for pixel aspect ratio, if set, because TiVo
 238             # expects square pixels
 239
 240             if npar < 1.0:
 241                 return ['-s', str(vInfo['vWidth']) + 'x' +
 242                         str(int(math.ceil(vInfo['vHeight'] / npar)))]
 243             elif npar > 1.0:
 244                 # FFMPEG expects width to be a multiple of two
 245
 246                 return ['-s', str(int(math.ceil(vInfo['vWidth'] * npar /
 247                         2.0) * 2)) + 'x' + str(vInfo['vHeight'])]
 248
 249         if vInfo['vHeight'] <= TIVO_HEIGHT:
 250             # pass all resolutions to S3, except heights greater than
 251             # conf height
 252             return []
 253         # else, resize video.
 254
 255     if (rwidth, rheight) in [(1, 1)] and vInfo['par1'] == '8:9':
 256         logger.debug('File + PAR is within 4:3.')
 257         return ['-aspect', '4:3', '-s', '%sx%s' % (TIVO_WIDTH, TIVO_HEIGHT)]
 258
 259     elif ((rwidth, rheight) in [(4, 3), (10, 11), (15, 11), (59, 54),
 260                                 (59, 72), (59, 36), (59, 54)] or
 261           vInfo['dar1'] == '4:3'):
 262         logger.debug('File is within 4:3 list.')
 263         return ['-aspect', '4:3', '-s', '%sx%s' % (TIVO_WIDTH, TIVO_HEIGHT)]
 264
 265     elif (((rwidth, rheight) in [(16, 9), (20, 11), (40, 33), (118, 81),
 266                                 (59, 27)] or vInfo['dar1'] == '16:9')
 267           and (aspect169 or config.get169Letterbox(tsn))):
 268         logger.debug('File is within 16:9 list and 16:9 allowed.')
 269
 270         if config.get169Blacklist(tsn) or (aspect169 and
 271                                            config.get169Letterbox(tsn)):
 272             return ['-aspect', '4:3', '-s', '%sx%s' %
 273                     (TIVO_WIDTH, TIVO_HEIGHT)]
 274         else:
 275             return ['-aspect', '16:9', '-s', '%sx%s' %
 276                     (TIVO_WIDTH, TIVO_HEIGHT)]
 277     else:
 278         settings = []
 279
 280         # If video is wider than 4:3 add top and bottom padding
 281
 282         if ratio > 133: # Might be 16:9 file, or just need padding on
 283                         # top and bottom
 284
 285             if aspect169 and ratio > 135: # If file would fall in 4:3
 286                                           # assume it is supposed to be 4:3
 287
 288                 if ratio > 177: # too short needs padding top and bottom
 289                     endHeight = int(((TIVO_WIDTH * vInfo['vHeight']) /
 290                                     vInfo['vWidth']) * multiplier16by9)
 291                     settings.append('-aspect')
 292                     if (config.get169Blacklist(tsn) or
 293                         config.get169Letterbox(tsn)):
 294                         settings.append('4:3')
 295                     else:
 296                         settings.append('16:9')
 297                     if endHeight % 2:
 298                         endHeight -= 1
 299                     if endHeight < TIVO_HEIGHT * 0.99:
 300                         settings.append('-s')
 301                         settings.append('%sx%s' % (TIVO_WIDTH, endHeight))
 302
 303                         topPadding = ((TIVO_HEIGHT - endHeight) / 2)
 304                         if topPadding % 2:
 305                             topPadding -= 1
 306
 307                         settings.append('-padtop')
 308                         settings.append(str(topPadding))
 309                         bottomPadding = (TIVO_HEIGHT - endHeight) - topPadding
 310                         settings.append('-padbottom')
 311                         settings.append(str(bottomPadding))
 312                     else:   # if only very small amount of padding
 313                             # needed, then just stretch it
 314                         settings.append('-s')
 315                         settings.append('%sx%s' % (TIVO_WIDTH, TIVO_HEIGHT))
 316
 317                     logger.debug(('16:9 aspect allowed, file is wider ' +
 318                                   'than 16:9 padding top and bottom\n%s') %
 319                                  ' '.join(settings))
 320
 321                 else: # too skinny needs padding on left and right.
 322                     endWidth = int((TIVO_HEIGHT * vInfo['vWidth']) /
 323                                    (vInfo['vHeight'] * multiplier16by9))
 324                     settings.append('-aspect')
 325                     if (config.get169Blacklist(tsn) or
 326                         config.get169Letterbox(tsn)):
 327                         settings.append('4:3')
 328                     else:
 329                         settings.append('16:9')
 330                     if endWidth % 2:
 331                         endWidth -= 1
 332                     if endWidth < (TIVO_WIDTH - 10):
 333                         settings.append('-s')
 334                         settings.append('%sx%s' % (endWidth, TIVO_HEIGHT))
 335
 336                         leftPadding = ((TIVO_WIDTH - endWidth) / 2)
 337                         if leftPadding % 2:
 338                             leftPadding -= 1
 339
 340                         settings.append('-padleft')
 341                         settings.append(str(leftPadding))
 342                         rightPadding = (TIVO_WIDTH - endWidth) - leftPadding
 343                         settings.append('-padright')
 344                         settings.append(str(rightPadding))
 345                     else: # if only very small amount of padding needed,
 346                           # then just stretch it
 347                         settings.append('-s')
 348                         settings.append('%sx%s' % (TIVO_WIDTH, TIVO_HEIGHT))
 349                     logger.debug(('16:9 aspect allowed, file is narrower ' +
 350                                   'than 16:9 padding left and right\n%s') %
 351                                  ' '.join(settings))
 352             else: # this is a 4:3 file or 16:9 output not allowed
 353                 multiplier = multiplier4by3
 354                 settings.append('-aspect')
 355                 if ratio > 135 and config.get169Letterbox(tsn):
 356                     settings.append('16:9')
 357                     multiplier = multiplier16by9
 358                 else:
 359                     settings.append('4:3')
 360                 endHeight = int(((TIVO_WIDTH * vInfo['vHeight']) /
 361                                  vInfo['vWidth']) * multiplier)
 362                 if endHeight % 2:
 363                     endHeight -= 1
 364                 if endHeight < TIVO_HEIGHT * 0.99:
 365                     settings.append('-s')
 366                     settings.append('%sx%s' % (TIVO_WIDTH, endHeight))
 367
 368                     topPadding = ((TIVO_HEIGHT - endHeight)/2)
 369                     if topPadding % 2:
 370                         topPadding -= 1
 371
 372                     settings.append('-padtop')
 373                     settings.append(str(topPadding))
 374                     bottomPadding = (TIVO_HEIGHT - endHeight) - topPadding
 375                     settings.append('-padbottom')
 376                     settings.append(str(bottomPadding))
 377                 else:   # if only very small amount of padding needed,
 378                         # then just stretch it
 379                     settings.append('-s')
 380                     settings.append('%sx%s' % (TIVO_WIDTH, TIVO_HEIGHT))
 381                 logging.debug(('File is wider than 4:3 padding ' +
 382                                'top and bottom\n%s') % ' '.join(settings))
 383
 384             return settings
 385
 386         # If video is taller than 4:3 add left and right padding, this
 387         # is rare. All of these files will always be sent in an aspect
 388         # ratio of 4:3 since they are so narrow.
 389
 390         else:
 391             endWidth = int((TIVO_HEIGHT * vInfo['vWidth']) /
 392                            (vInfo['vHeight'] * multiplier4by3))
 393             settings.append('-aspect')
 394             settings.append('4:3')
 395             if endWidth % 2:
 396                 endWidth -= 1
 397             if endWidth < (TIVO_WIDTH * 0.99):
 398                 settings.append('-s')
 399                 settings.append('%sx%s' % (endWidth, TIVO_HEIGHT))
 400
 401                 leftPadding = ((TIVO_WIDTH - endWidth) / 2)
 402                 if leftPadding % 2:
 403                     leftPadding -= 1
 404
 405                 settings.append('-padleft')
 406                 settings.append(str(leftPadding))
 407                 rightPadding = (TIVO_WIDTH - endWidth) - leftPadding
 408                 settings.append('-padright')
 409                 settings.append(str(rightPadding))
 410             else: # if only very small amount of padding needed, then
 411                   # just stretch it
 412                 settings.append('-s')
 413                 settings.append('%sx%s' % (TIVO_WIDTH, TIVO_HEIGHT))
 414
 415             logger.debug('File is taller than 4:3 padding left and right\n%s'
 416                          % ' '.join(settings))
 417
 418             return settings
 419
 420 def tivo_compatible(inFile, tsn=''):
 421     supportedModes = [(720, 480), (704, 480), (544, 480),
 422                       (528, 480), (480, 480), (352, 480)]
 423     vInfo = video_info(inFile)
 424
 425     while True:
 426         if (inFile[-5:]).lower() == '.tivo':
 427             message = (True, 'TRANSCODE=NO, ends with .tivo.')
 428             break
 429
 430         if not vInfo['vCodec'] == 'mpeg2video':
 431             #print 'Not Tivo Codec'
 432             message = (False, 'TRANSCODE=YES, vCodec %s not compatible.' %
 433                               vInfo['vCodec'])
 434             break
 435
 436         if os.path.splitext(inFile)[-1].lower() in ('.ts', '.mpv',
 437                                                     '.tp', '.dvr-ms'):
 438             message = (False, 'TRANSCODE=YES, ext %s not compatible.' %
 439                               os.path.splitext(inFile)[-1])
 440             break
 441
 442         if vInfo['aCodec'] == 'dca':
 443             message = (False, 'TRANSCODE=YES, aCodec %s not compatible.' %
 444                               vInfo['aCodec'])
 445             break
 446
 447         if vInfo['aCodec'] != None:
 448             if (not vInfo['aKbps'] or
 449                 int(vInfo['aKbps']) > config.getMaxAudioBR(tsn)):
 450                 message = (False, ('TRANSCODE=YES, %s kbps exceeds max ' +
 451                                    'audio bitrate.') % vInfo['aKbps'])
 452                 break
 453
 454         if vInfo['kbps'] != None:
 455             abit = max('0', vInfo['aKbps'])
 456             if (int(vInfo['kbps']) - int(abit) >
 457                 config.strtod(config.getMaxVideoBR()) / 1000):
 458                 message = (False, ('TRANSCODE=YES, %s kbps exceeds max ' +
 459                                    'video bitrate.') % vInfo['kbps'])
 460                 break
 461         else:
 462             message = (False, 'TRANSCODE=YES, %s kbps not supported.' %
 463                               vInfo['kbps'])
 464             break
 465
 466         if config.getAudioLang(tsn):
 467             if vInfo['mapAudio'][0][0] != select_audiolang(inFile, tsn)[-3:]:
 468                 message = (False, ('TRANSCODE=YES, %s preferred audio ' +
 469                                    'track exists.') % config.getAudioLang(tsn))
 470                 break
 471
 472         if config.isHDtivo(tsn):
 473             if vInfo['par2'] != 1.0:
 474                 if config.getPixelAR(0):
 475                     if vInfo['par2'] != None or config.getPixelAR(1) != 1.0:
 476                         message = (False, 'TRANSCODE=YES, %s not correct PAR.'
 477                                           % vInfo['par2'])
 478                         break
 479             message = (True, 'TRANSCODE=NO, HD Tivo detected, skipping ' +
 480                              'remaining tests.')
 481             break
 482
 483         if not vInfo['vFps'] == '29.97':
 484             #print 'Not Tivo fps'
 485             message = (False, 'TRANSCODE=YES, %s vFps, should be 29.97.' %
 486                               vInfo['vFps'])
 487             break
 488
 489         if ((config.get169Blacklist(tsn) and not config.get169Setting(tsn))
 490             or (config.get169Letterbox(tsn) and config.get169Setting(tsn))):
 491             if vInfo['dar1'] == None or not vInfo['dar1'] in ('4:3', '8:9'):
 492                 message = (False, ('TRANSCODE=YES, DAR %s not supported ' +
 493                                    'by BLACKLIST_169 tivos.') % vInfo['dar1'])
 494                 break
 495
 496         for mode in supportedModes:
 497             if mode == (vInfo['vWidth'], vInfo['vHeight']):
 498                 message = (True, 'TRANSCODE=NO, %s x %s is valid.' %
 499                                  (vInfo['vWidth'], vInfo['vHeight']))
 500                 break
 501             #print 'Not Tivo dimensions'
 502             message = (False, 'TRANSCODE=YES, %s x %s not in supported modes.'
 503                        % (vInfo['vWidth'], vInfo['vHeight']))
 504         break
 505
 506     logger.debug('%s, %s' % (message, inFile))
 507     return message
 508
 509
 510 def video_info(inFile):
 511     vInfo = dict()
 512     mtime = os.stat(inFile).st_mtime
 513     if inFile != videotest:
 514         if inFile in info_cache and info_cache[inFile][0] == mtime:
 515             logging.debug('CACHE HIT! %s' % inFile)
 516             return info_cache[inFile][1]
 517
 518     vInfo['Supported'] = True
 519
 520     if (inFile[-5:]).lower() == '.tivo':
 521         vInfo['millisecs'] = 0
 522         info_cache[inFile] = (mtime, vInfo)
 523         logger.debug('VALID, ends in .tivo. %s' % inFile)
 524         return vInfo
 525
 526     cmd = [ffmpeg_path(), '-i', inFile]
 527     # Windows and other OS buffer 4096 and ffmpeg can output more than that.
 528     err_tmp = tempfile.TemporaryFile()
 529     ffmpeg = subprocess.Popen(cmd, stderr=err_tmp, stdout=subprocess.PIPE,
 530                               stdin=subprocess.PIPE)
 531
 532     # wait 10 sec if ffmpeg is not back give up
 533     for i in xrange(200):
 534         time.sleep(.05)
 535         if not ffmpeg.poll() == None:
 536             break
 537
 538     if ffmpeg.poll() == None:
 539         kill(ffmpeg.pid)
 540         vInfo['Supported'] = False
 541         info_cache[inFile] = (mtime, vInfo)
 542         return vInfo
 543
 544     err_tmp.seek(0)
 545     output = err_tmp.read()
 546     err_tmp.close()
 547     logging.debug('ffmpeg output=%s' % output)
 548
 549     rezre = re.compile(r'.*Video: ([^,]+),.*')
 550     x = rezre.search(output)
 551     if x:
 552         vInfo['vCodec'] = x.group(1)
 553     else:
 554         vInfo['vCodec'] = ''
 555         vInfo['Supported'] = False
 556         logger.debug('failed at vCodec')
 557
 558     rezre = re.compile(r'.*Video: .+, (\d+)x(\d+)[, ].*')
 559     x = rezre.search(output)
 560     if x:
 561         vInfo['vWidth'] = int(x.group(1))
 562         vInfo['vHeight'] = int(x.group(2))
 563     else:
 564         vInfo['vWidth'] = ''
 565         vInfo['vHeight'] = ''
 566         vInfo['Supported'] = False
 567         logger.debug('failed at vWidth/vHeight')
 568
 569     rezre = re.compile(r'.*Video: .+, (.+) (?:fps|tb).*')
 570     x = rezre.search(output)
 571     if x:
 572         vInfo['vFps'] = x.group(1)
 573
 574         # Allow override only if it is mpeg2 and frame rate was doubled
 575         # to 59.94
 576
 577         if vInfo['vCodec'] == 'mpeg2video' and vInfo['vFps'] != '29.97':
 578             # First look for the build 7215 version
 579             rezre = re.compile(r'.*film source: 29.97.*')
 580             x = rezre.search(output.lower())
 581             if x:
 582                 logger.debug('film source: 29.97 setting vFps to 29.97')
 583                 vInfo['vFps'] = '29.97'
 584             else:
 585                 # for build 8047:
 586                 rezre = re.compile(r'.*frame rate differs from container ' +
 587                                    r'frame rate: 29.97.*')
 588                 logger.debug('Bug in VideoReDo')
 589                 x = rezre.search(output.lower())
 590                 if x:
 591                     vInfo['vFps'] = '29.97'
 592     else:
 593         vInfo['vFps'] = ''
 594         vInfo['Supported'] = False
 595         logger.debug('failed at vFps')
 596
 597     durre = re.compile(r'.*Duration: ([0-9]+):([0-9]+):([0-9]+)\.([0-9]+),')
 598     d = durre.search(output)
 599
 600     if d:
 601         vInfo['millisecs'] = ((int(d.group(1)) * 3600 +
 602                                int(d.group(2)) * 60 +
 603                                int(d.group(3))) * 1000 +
 604                               int(d.group(4)) * (10 ** (3 - len(d.group(4)))))
 605     else:
 606         vInfo['millisecs'] = 0
 607
 608     # get bitrate of source for tivo compatibility test.
 609     rezre = re.compile(r'.*bitrate: (.+) (?:kb/s).*')
 610     x = rezre.search(output)
 611     if x:
 612         vInfo['kbps'] = x.group(1)
 613     else:
 614         vInfo['kbps'] = None
 615         logger.debug('failed at kbps')
 616
 617     # get audio bitrate of source for tivo compatibility test.
 618     rezre = re.compile(r'.*Audio: .+, (.+) (?:kb/s).*')
 619     x = rezre.search(output)
 620     if x:
 621         vInfo['aKbps'] = x.group(1)
 622     else:
 623         vInfo['aKbps'] = None
 624         logger.debug('failed at aKbps')
 625
 626     # get audio codec of source for tivo compatibility test.
 627     rezre = re.compile(r'.*Audio: ([^,]+),.*')
 628     x = rezre.search(output)
 629     if x:
 630         vInfo['aCodec'] = x.group(1)
 631     else:
 632         vInfo['aCodec'] = None
 633         logger.debug('failed at aCodec')
 634
 635     # get audio frequency of source for tivo compatibility test.
 636     rezre = re.compile(r'.*Audio: .+, (.+) (?:Hz).*')
 637     x = rezre.search(output)
 638     if x:
 639         vInfo['aFreq'] = x.group(1)
 640     else:
 641         vInfo['aFreq'] = None
 642         logger.debug('failed at aFreq')
 643
 644     # get par.
 645     rezre = re.compile(r'.*Video: .+PAR ([0-9]+):([0-9]+) DAR [0-9:]+.*')
 646     x = rezre.search(output)
 647     if x and x.group(1) != "0" and x.group(2) != "0":
 648         vInfo['par1'] = x.group(1) + ':' + x.group(2)
 649         vInfo['par2'] = float(x.group(1)) / float(x.group(2))
 650     else:
 651         vInfo['par1'], vInfo['par2'] = None, None
 652
 653     # get dar.
 654     rezre = re.compile(r'.*Video: .+DAR ([0-9]+):([0-9]+).*')
 655     x = rezre.search(output)
 656     if x and x.group(1) != "0" and x.group(2) != "0":
 657         vInfo['dar1'] = x.group(1) + ':' + x.group(2)
 658         vInfo['dar2'] = float(x.group(1)) / float(x.group(2))
 659     else:
 660         vInfo['dar1'], vInfo['dar2'] = None, None
 661
 662     # get Video Stream mapping.
 663     rezre = re.compile(r'([0-9]+\.[0-9]+).*: Video:.*')
 664     x = rezre.search(output)
 665     if x:
 666         vInfo['mapVideo'] = x.group(1)
 667     else:
 668         vInfo['mapVideo'] = None
 669         logger.debug('failed at mapVideo')
 670
 671     # get Audio Stream mapping.
 672     rezre = re.compile(r'([0-9]+\.[0-9]+)(.*): Audio:.*')
 673     x = rezre.search(output)
 674     amap = []
 675     if x:
 676         for x in rezre.finditer(output):
 677             amap.append(x.groups())
 678     else:
 679         amap.append(('', ''))
 680         logger.debug('failed at mapAudio')
 681     vInfo['mapAudio'] = amap
 682
 683     videoPlugin = GetPlugin('video')
 684     metadata = videoPlugin.getMetadataFromTxt(inFile)
 685
 686     for key in metadata:
 687         if key.startswith('Override_'):
 688             vInfo['Supported'] = True
 689             if key.startswith('Override_mapAudio'):
 690                 audiomap = dict(vInfo['mapAudio'])
 691                 stream = key.replace('Override_mapAudio', '').strip()
 692                 if stream in audiomap:
 693                     newaudiomap = (stream, metadata[key])
 694                     audiomap.update([newaudiomap])
 695                     vInfo['mapAudio'] = sorted(audiomap.items(),
 696                                                key=lambda (k,v): (k,v))
 697             elif key.startswith('Override_millisecs'):
 698                 vInfo[key.replace('Override_', '')] = int(metadata[key])
 699             else:
 700                 vInfo[key.replace('Override_', '')] = metadata[key]
 701
 702     info_cache[inFile] = (mtime, vInfo)
 703     logger.debug("; ".join(["%s=%s" % (k, v) for k, v in vInfo.items()]))
 704     return vInfo
 705
 706 def video_check(inFile, cmd_string):
 707     cmd = [ffmpeg_path(), '-i', inFile] + cmd_string.split()
 708     ffmpeg = subprocess.Popen(cmd, stdout=subprocess.PIPE)
 709     try:
 710         shutil.copyfileobj(ffmpeg.stdout, open(videotest, 'wb'))
 711         return True
 712     except:
 713         kill(ffmpeg.pid)
 714         return False
 715
 716 def supported_format(inFile):
 717     if video_info(inFile)['Supported']:
 718         return True
 719     else:
 720         logger.debug('FALSE, file not supported %s' % inFile)
 721         return False
 722
 723 def kill(pid):
 724     logger.debug('killing pid=%s' % str(pid))
 725     if mswindows:
 726         win32kill(pid)
 727     else:
 728         import os, signal
 729         os.kill(pid, signal.SIGTERM)
 730
 731 def win32kill(pid):
 732     import ctypes
 733     handle = ctypes.windll.kernel32.OpenProcess(1, False, pid)
 734     ctypes.windll.kernel32.TerminateProcess(handle, -1)
 735     ctypes.windll.kernel32.CloseHandle(handle)
 736
 737 def gcd(a, b):
 738     while b:
 739         a, b = b, a % b
 740     return a