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Fix and improve subtitle extraction

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* Fix runtime error when extracting with duplicate = 0
* Only extract subtitles in the allowed language list
* Do not add subtitle language suffix when there is only one subtitle
  (this helps auto-detection of subtitles on many media players)
This commit is contained in:
Roderick van Domburg 2014-07-31 18:22:43 +02:00
parent 74515f78a9
commit 24d0793554
1 changed files with 34 additions and 22 deletions
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56
nzbtomedia/transcoder/transcoder.py
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@ -386,38 +386,47 @@ def extract_subs(file, newfilePath, bitbucket):
video_details, result = getVideoDetails(file)
if not video_details:
return
subStreams = [item for item in video_details["streams"] if item["codec_type"] == "subtitle" and item["codec_name"] != "hdmv_pgs_subtitle"]
if nzbtomedia.SUBSDIR:
subdir = nzbtomedia.SUBSDIR
else:
subdir = os.path.split(newfilePath)[0]
name = os.path.splitext(os.path.split(newfilePath)[1])[0]
for n in range(len(subStreams)):
subStreams = [item for item in video_details["streams"] if item["codec_type"] == "subtitle" and item["tags"]["language"] in nzbtomedia.SLANGUAGES and item["codec_name"] != "hdmv_pgs_subtitle"]
num = len(subStreams)
for n in range(num):
sub = subStreams[n]
lan = sub["tags"]["language"]
outputFile = os.path.join(subdir, "%s(%s).srt" %(name, lan))
if os.path.isfile(outputFile):
outputFile = os.path.join(subdir, "%s(%s)%s.srt" %(name, n, lan))
command = [nzbtomedia.FFMPEG, '-loglevel', 'warning', '-i', sub, '-vn', '-an', '-codec:s:' + str(n), 'srt', outputFile]
if num == 1:
outputFile = os.path.join(subdir, "%s.srt" %(name))
if os.path.isfile(outputFile):
outputFile = os.path.join(subdir, "%s.%s.srt" %(name, n))
else:
outputFile = os.path.join(subdir, "%s.%s.srt" %(name, lan))
if os.path.isfile(outputFile):
outputFile = os.path.join(subdir, "%s.%s.%s.srt" %(name, lan, n))
command = [nzbtomedia.FFMPEG, '-loglevel', 'warning', '-i', file, '-vn', '-an', '-codec:s:' + str(n), 'srt', outputFile]
if platform.system() != 'Windows':
command = nzbtomedia.NICENESS + command
logger.info("Extracting %s Subtitle from: %s" % (lan, file))
logger.info("Extracting %s subtitle from: %s" % (lan, file))
cmd = ""
for item in command:
cmd = cmd + " " + str(item)
logger.debug("calling command:%s" % (cmd))
logger.debug("Calling command: %s" % (cmd))
result = 1 # set result to failed in case call fails.
try:
result = call(command, stdout=bitbucket, stderr=bitbucket)
except:
logger.error("Extracting subtitles has failed")
logger.error("Extracting subtitle has failed")
if result == 0:
logger.info("Extracting %s Subtitle from %s has succeeded" % (lan, file))
logger.info("Extracting %s subtitle from %s has succeeded" % (lan, file))
else:
logger.error("Extracting subtitles has failed")
logger.error("Extracting subtitles has failed")
def Transcode_directory(dirName):
if platform.system() == 'Windows':
@ -440,6 +449,19 @@ def Transcode_directory(dirName):
continue
command = buildCommands(file, newDir)
newfilePath = command[-1]
# transcoding files may remove the original file, so make sure to extract subtitles first
if nzbtomedia.SEXTRACT:
extract_subs(file, newfilePath, bitbucket)
if nzbtomedia.SUBSDIR:
for sub in get_subs(file):
name = os.path.splitext(os.path.split(file)[1])[0]
subname = os.path.split(sub)[1]
newname = os.path.splitext(os.path.split(newfilePath)[1])[0]
newpath = os.path.join(nzbtomedia.SUBSDIR, subname.replace(name, newname))
if not os.path.isfile(newpath):
os.rename(sub, newpath)
try: # Try to remove the file that we're transcoding to just in case. (ffmpeg will return an error if it already exists for some reason)
os.remove(newfilePath)
except OSError, e:
@ -467,16 +489,6 @@ def Transcode_directory(dirName):
logger.error("Transcoding of video %s to %s failed" % (file, newfilePath))
# this will be 0 (successful) it all are successful, else will return a positive integer for failure.
final_result = final_result + result
if nzbtomedia.SEXTRACT:
extract_subs(file, newfilePath, bitbucket)
if nzbtomedia.SUBSDIR:
for sub in get_subs(file):
name = os.path.splitext(os.path.split(file)[1])[0]
subname = os.path.split(sub)[1]
newname = os.path.splitext(os.path.split(newfilePath)[1])[0]
newpath = os.path.join(nzbtomedia.SUBSDIR, subname.replace(name, newname))
if not os.path.isfile(newpath):
os.rename(sub, newpath)
if not nzbtomedia.PROCESSOUTPUT and nzbtomedia.DUPLICATE: # We postprocess the original files to CP/SB
newDir = dirName