def chunk_dash(*args, **kwargs):
'''
create dash chunks for every video in the transcoded folder
'''
logger.info("chunking dash")
logger.info(args)
logger.info(kwargs)
context = args[0]
segtime = kwargs['segtime']
if not os.path.exists(get_dash_folder(context)):
os.makedirs(get_dash_folder(context))
args = "MP4Box -dash " + str(segtime) + "000 -profile onDemand "
files_in = [
os.path.join(get_transcoded_folder(context), f)
for f in os.listdir(get_transcoded_folder(context))
]
for i in range(0, len(files_in)):
args += files_in[i] + "#video:id=v" + str(i) + " "
args += files_in[0] + "#audio:id=a0 "
args += " -out " + get_dash_mpd_file_path(context)
print args
subprocess.call(args, shell=True)
return context
def transcode(*args):
'''
transcode the video to mp4 format
'''
# print args, kwargs
context = args[0]
for bitrate in context["bitrateList"]:
parameters = compute_quantification_parameters(bitrate)
if not os.path.exists(get_transcoded_folder(context)):
os.makedirs(get_transcoded_folder(context))
args = get_welsenc_path(context) + " -org " + get_yuv_file(
context
) + " -bf " + get_transcoded_file(context, bitrate) + " -sw " + str(
context["track_width"]) + " -sh " + str(
context["track_height"]
) + " -tarb " + str(bitrate) + " -minqp " + str(
parameters["min_qp"]) + " -maxqp " + str(
parameters["max_qp"]
) + " -ltarb " + get_layer_path(context) + " " + str(
bitrate) + " -lqp " + get_layer_path(context) + " " + str(
parameters["in_qp"]
) + " -dw " + get_layer_path(context) + " " + str(
context["target_width"]) + " -dh " + get_layer_path(
context) + " " + str(context["target_height"])
run_background(args)
print args
return context
def create_yuv_file(*args, **kwargs):
context = args[0]
if not os.path.exists(get_transcoded_folder(context)):
os.makedirs(get_transcoded_folder(context))
run_background("ffmpeg -i " + context["original_file"] +
" -vcodec rawvideo -pix_fmt yuv420p " +
get_yuv_file(context))
return context
def clean_encoding_folder(*args, **kwargs):
'''
delete encoding folder
'''
# print args, kwargs
context = args[0]
shutil.rmtree(get_transcoded_folder(context))
def transcode(*args, **kwargs):
'''
transcode the video to mp4 format
'''
# print args, kwargs
context = args[0]
context["bitrate"] = kwargs['bitrate']
dimsp = str(context["target_width"]) + ":" + str(context["target_height"])
if not os.path.exists(get_transcoded_folder(context)):
os.makedirs(get_transcoded_folder(context))
subprocess.call(
"ffmpeg -i " + context[
"original_file"] + " -c:v libx264 -profile:v main -level 3.1 -b:v 100k -vf scale=" + dimsp + " -c:a aac -strict -2 -force_key_frames expr:gte\(t,n_forced*4\) " + get_transcoded_file(
context),
shell=True)
return context
def deploy_original_file(*args, **kwargs):
context = args[0]
encoding_folder = get_transcoded_folder(context)
if not os.path.exists(encoding_folder):
os.makedirs(encoding_folder)
shutil.copyfile(context["original_file"], os.path.join(encoding_folder, "original.mp4"))
return context
def clean_encoding_folder(*args, **kwargs):
'''
delete encoding folder
'''
# print args, kwargs
context = args[0]
shutil.rmtree(get_transcoded_folder(context))
def deploy_original_file(*args, **kwargs):
context = args[0]
encoding_folder = get_transcoded_folder(context)
if not os.path.exists(encoding_folder):
os.makedirs(encoding_folder)
shutil.copyfile(context["original_file"],
os.path.join(encoding_folder, "original.mp4"))
return context
def transcode(*args, **kwargs):
'''
transcode the video to mp4 format
'''
# print args, kwargs
context = args[0]
context["bitrate"] = kwargs['bitrate']
context["segtime"] = kwargs['segtime']
dimsp = str(context["target_width"]) + ":" + str(context["target_height"])
if not os.path.exists(get_transcoded_folder(context)):
os.makedirs(get_transcoded_folder(context))
run_background(
"ffmpeg -i " + context["original_file"] +
" -c:v libx264 -profile:v main -level 3.1 -b:v " +
str(context["bitrate"]) + "k -vf scale=" + dimsp +
" -c:a aac -strict -2 -force_key_frames expr:gte\(t,n_forced*" +
str(context["segtime"]) + "\) " + get_transcoded_file(context))
return context
def chunk_dash(*args, **kwargs):
'''
create dash chunks for every video in the transcoded folder
'''
# print args, kwargs
context = args[0]
if not os.path.exists(get_dash_folder(context)):
os.makedirs(get_dash_folder(context))
args = "MP4Box -dash 4000 -profile onDemand "
files_in = [os.path.join(get_transcoded_folder(context), f) for f in os.listdir(get_transcoded_folder(context))]
for i in range(0, len(files_in)):
args += files_in[i] + "#video:id=v" + str(i) + " "
args += " -out " + get_dash_mpd_file_path(context)
print args
subprocess.call(args, shell=True)
return context
def chunk_dash(*args, **kwargs):
'''
create dash chunks for every video in the transcoded folder
'''
# print args, kwargs
context = args[0]
segtime = kwargs['segtime']
if not os.path.exists(get_dash_folder(context)):
os.makedirs(get_dash_folder(context))
args = "MP4Box -dash " + str(segtime) + "000 -profile onDemand "
files_in = [os.path.join(get_transcoded_folder(context), f) for f in os.listdir(get_transcoded_folder(context))]
for i in range(0, len(files_in)):
args += files_in[i] + "#video:id=v" + str(i) + " "
args += files_in[0] + "#audio:id=a0 "
args += " -out " + get_dash_mpd_file_path(context)
print args
run_background(args)
return context
def create_descriptions(*args):
context = args[0]
if not os.path.exists(get_description_folder(context)):
os.makedirs(get_description_folder(context))
#if not os.path.exists(get_plus_description_folder(context)):
# os.makedirs(get_plus_description_folder(context))
args = get_postProcessor_path(context) + " 2 " + get_transcoded_folder(
context) + "/" + str(
context["lowBitrate"]
) + ".h264 " + get_transcoded_folder(context) + "/" + str(
context["highBitrate"]) + ".h264 " + get_description_folder(
context) + " " + str(context["changeFrameRate"]) + " " + str(
context["desNum"])
#plus_args = get_postProcessor_path(context)+" 3 " + get_transcoded_folder(context) + "/" + str(context["midBitrate"])+".h264 " + get_transcoded_folder(context) + "/" + str(context["midBitrate"])+".h264 " + get_transcoded_folder(context) + "/" + str(context["highBitrate"])+".h264 " + get_plus_description_folder(context) +" " + str(context["changeFrameRate"]) + " " + str(context["desNum"])
run_background(args)
#run_background(plus_args)
print args
#print(plus_args)
return context
def transcode(*args, **kwargs):
'''
transcode the video to mp4 format
'''
# print args, kwargs
context = args[0]
context["bitrate"] = kwargs['bitrate']
context["segtime"] = kwargs['segtime']
dimsp = str(context["target_width"]) + ":" + str(context["target_height"])
if not os.path.exists(get_transcoded_folder(context)):
try:
os.makedirs(get_transcoded_folder(context))
except OSError as e:
pass
command_line = "ffmpeg -i " + context[
"original_file"] + " -c:v libx264 -profile:v main -level 3.1 -b:v " + str(
context["bitrate"]
) + "k -vf scale=" + dimsp + " -c:a aac -strict -2 -force_key_frames expr:gte\(t,n_forced*" + str(
context["segtime"]) + "\) " + get_transcoded_file(context)
print("transcoding commandline %s" % command_line)
subprocess.call(command_line, shell=True)
return context
def transcode(*args, **kwargs):
'''
transcode the video to mp4 format
'''
# print args, kwargs
context = args[0]
context["bitrate"] = kwargs['bitrate']
context["segtime"] = kwargs['segtime']
dimsp = str(context["target_width"]) + ":" + str(context["target_height"])
if not os.path.exists(get_transcoded_folder(context)):
try:
os.makedirs(get_transcoded_folder(context))
except OSError as e:
pass
command_line = "ffmpeg -i " + context[
"original_file"] + " -c:v libx264 -profile:v main -level 3.1 -b:v " + str(context[
"bitrate"]) + "k -vf scale=" + dimsp + " -c:a aac -strict -2 -force_key_frames expr:gte\(t,n_forced*" + str(
context["segtime"]) + "\) " + get_transcoded_file(
context)
print("transcoding commandline %s" % command_line)
subprocess.call(command_line,
shell=True)
return context
def clean_useless_folders(*args):
'''
delete encoding folder
'''
# print args, kwargs
context = args[0]
shutil.rmtree(get_transcoded_folder(context))
shutil.rmtree(get_description_folder(context))
shutil.rmtree(get_dash_mpd_file_folder(context))
#shutil.rmtree(get_plus_description_folder(context))
i = 1
while i <= int(context["desNum"]):
#shutil.rmtree(get_mp4_description_folder(context,i))
shutil.rmtree(get_dash_folder(context, i))
#shutil.rmtree(get_plus_mp4_description_folder(context,i))
#shutil.rmtree(get_plus_dash_folder(context,i))
i += 1
