def generate_Quicktime(sequencePath, frameRate, filePath, res=None):
firstFrame, lastFrame = fileOperations.getSequenceRange(sequencePath)
firstFrame = str(int(firstFrame))
if res == None:
ffmpegStr = 'ffmpeg -start_number ' + firstFrame + ' -r ' + frameRate + ' -i "' + sequencePath + '" -qscale:v 4 -vcodec mjpeg -y "' + filePath + '"'
else:
ffmpegStr = 'ffmpeg -start_number ' + firstFrame + ' -r ' + frameRate + ' -i "' + sequencePath + '" -qscale:v 4 -vf "[in] scale=' + res + ' [out]" -vcodec mjpeg -y "' + filePath + '"'
subprocess.call(ffmpegStr)
def getItemRange(item):
#Takes: item as valid sequence pattern or video file path
#Performs: call to get_frame_length or call to fileOperations.getSequenceRange
#Returns: firstFrame, lastFrame as int, int
if fileOperations.isPattern(item):
return fileOperations.getSequenceRange(item)
else:
return 0, get_frame_length(item)
def getItemStream(filePath):
#Takes: filePath as valid sequence or video file path
#Performs: call to ffmpeg_getStream
#Returns: dictionary of values from ffmpeg
if fileOperations.isPattern(filePath):
first, last = fileOperations.getSequenceRange(filePath)
filePath = fileOperations.patternFill(filePath, first)
return ffmpeg_getStream(filePath)
else:
return ffmpeg_getStream(filePath)
def get_frame_length(filePath):
#Takes: filePath as valid video file path
#Performs: call to ffmpeg_getStream
#Returns: duration of video file as int
if fileOperations.isPattern(filePath):
first, last = fileOperations.getSequenceRange(filePath)
return int(last) - int(first)
else:
stream = ffmpeg_getStream(filePath)
if stream['codec_time_base'] == '1/24':
FrameRate = 24000.0 / 1001.0 #Correct Math for 23.976023976
FrameRate = 23.97602746 #ffmpeg's incorrect math
else:
FrameRate = float(stream['codec_time_base'].split('/', 1)[1])
return int(float(stream['duration']) * FrameRate)
def generate_Proxies(sequencePath, proxyScale, filePath):
firstFrame, lastFrame = fileOperations.getSequenceRange(sequencePath)
firstFrame = int(firstFrame)
lastFrame = int(lastFrame)
srcPadding = sequencePath[re.search("%\d\dd", sequencePath).start():re.
search("%\d\dd", sequencePath).end()]
destPadding = filePath[re.search("%\d\dd", filePath).start():re.
search("%\d\dd", filePath).end()]
srcPaddingDigits = int(
sequencePath[re.search("%\d\dd", sequencePath).start() +
1:re.search("%\d\dd", sequencePath).end() - 1])
destPaddingDigits = int(
filePath[re.search("%\d\dd", filePath).start() +
1:re.search("%\d\dd", filePath).end() - 1])
for i in range(firstFrame, lastFrame + 1):
srcPath = sequencePath.replace(srcPadding,
str(i).zfill(srcPaddingDigits))
destPath = filePath.replace(destPadding,
str(i).zfill(destPaddingDigits))
ffmpegStr = 'ffmpeg -v warning -i "' + srcPath + '" -vf "[in] scale=' + proxyScale + ' [out]" -y "' + destPath + '"'
subprocess.call(ffmpegStr)