heckyel/mediagoblin
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Modify CommonVideoPrcoessor to accomodate mulitple qualities

Browse Source 
A few trivial modifciations like replacing store_metadata,
etc needed to accomodate multiple qualities.
This commit is contained in:
vijeth-aradhya 2017-06-07 20:39:26 +05:30
parent c62181f4bc
commit 16ef1164c1
1 changed files with 37 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
mediagoblin/media_types/video/processing.py
View File

@ -165,9 +165,10 @@ class CommonVideoProcessor(MediaProcessor):
"""
Provides a base for various video processing steps
"""
acceptable_files = ['original', 'best_quality', 'webm_video']
acceptable_files = ['original, best_quality', 'webm_144p', 'webm_360p',
'webm_480p', 'webm_720p', 'webm_1080p', 'webm_video']
def common_setup(self):
def common_setup(self, resolution=None):
self.video_config = mgg \
.global_config['plugins'][MEDIA_TYPE]
@ -179,32 +180,23 @@ class CommonVideoProcessor(MediaProcessor):
self.transcoder = transcoders.VideoTranscoder()
self.did_transcode = False
# Extract metadata and keep a record of it
self.metadata = transcoders.discover(self.process_filename)
# metadata's stream info here is a DiscovererContainerInfo instance,
# it gets split into DiscovererAudioInfo and DiscovererVideoInfo;
# metadata itself has container-related data in tags, like video-codec
store_metadata(self.entry, self.metadata)
if resolution:
self.curr_file = 'webm_' + str(resolution)
self.part_filename = (self.name_builder.fill('{basename}.' +
str(resolution) + '.webm'))
else:
self.curr_file = 'webm_video'
self.part_filename = self.name_builder.fill('{basename}.medium.webm')
def copy_original(self):
# If we didn't transcode, then we need to keep the original
if not self.did_transcode or \
(self.video_config['keep_original'] and self.did_transcode):
copy_original(
self.entry, self.process_filename,
self.name_builder.fill('{basename}{ext}'))
raise NotImplementedError
def _keep_best(self):
"""
If there is no original, keep the best file that we have
"""
if not self.entry.media_files.get('best_quality'):
# Save the best quality file if no original?
if not self.entry.media_files.get('original') and \
self.entry.media_files.get('webm_video'):
self.entry.media_files['best_quality'] = self.entry \
.media_files['webm_video']
raise NotImplementedError
def _skip_processing(self, keyname, **kwargs):
file_metadata = self.entry.get_file_metadata(keyname)
@ -213,7 +205,7 @@ class CommonVideoProcessor(MediaProcessor):
return False
skip = True
if keyname == 'webm_video':
if 'webm' in keyname:
if kwargs.get('medium_size') != file_metadata.get('medium_size'):
skip = False
elif kwargs.get('vp8_quality') != file_metadata.get('vp8_quality'):
@ -233,8 +225,7 @@ class CommonVideoProcessor(MediaProcessor):
def transcode(self, medium_size=None, vp8_quality=None, vp8_threads=None,
vorbis_quality=None):
progress_callback = ProgressCallback(self.entry)
tmp_dst = os.path.join(self.workbench.dir,
self.name_builder.fill('{basename}.medium.webm'))
tmp_dst = os.path.join(self.workbench.dir, self.part_filename)
if not medium_size:
medium_size = (
@ -252,24 +243,23 @@ class CommonVideoProcessor(MediaProcessor):
'vp8_quality': vp8_quality,
'vorbis_quality': vorbis_quality}
if self._skip_processing('webm_video', **file_metadata):
if self._skip_processing(self.curr_file, **file_metadata):
return
orig_dst_dimensions = (self.metadata.get_video_streams()[0].get_width(),
self.metadata.get_video_streams()[0].get_height())
metadata = transcoders.discover(self.process_filename)
orig_dst_dimensions = (metadata.get_video_streams()[0].get_width(),
metadata.get_video_streams()[0].get_height())
# Figure out whether or not we need to transcode this video or
# if we can skip it
if skip_transcode(self.metadata, medium_size):
if skip_transcode(metadata, medium_size):
_log.debug('Skipping transcoding')
dst_dimensions = orig_dst_dimensions
# If there is an original and transcoded, delete the transcoded
# since it must be of lower quality then the original
if self.entry.media_files.get('original') and \
self.entry.media_files.get('webm_video'):
self.entry.media_files['webm_video'].delete()
self.entry.media_files.get(self.curr_file):
self.entry.media_files[self.curr_file].delete()
else:
self.transcoder.transcode(self.process_filename, tmp_dst,
@ -279,27 +269,16 @@ class CommonVideoProcessor(MediaProcessor):
progress_callback=progress_callback,
dimensions=tuple(medium_size))
if self.transcoder.dst_data:
video_info = self.transcoder.dst_data.get_video_streams()[0]
dst_dimensions = (video_info.get_width(),
video_info.get_height())
self._keep_best()
# Push transcoded video to public storage
_log.debug('Saving medium...')
store_public(self.entry, 'webm_video', tmp_dst,
self.name_builder.fill('{basename}.medium.webm'))
_log.debug('Saved medium')
self.entry.set_file_metadata('webm_video', **file_metadata)
# Is this the file_metadata that paroneayea was talking about?
self.entry.set_file_metadata(self.curr_file, **file_metadata)
self.did_transcode = True
else:
dst_dimensions = orig_dst_dimensions
# Save the width and height of the transcoded video
self.entry.media_data_init(
width=dst_dimensions[0],
height=dst_dimensions[1])
def generate_thumb(self, thumb_size=None):
# Temporary file for the video thumbnail (cleaned up with workbench)
@ -331,6 +310,17 @@ class CommonVideoProcessor(MediaProcessor):
self.entry.set_file_metadata('thumb', thumb_size=thumb_size)
def store_orig_metadata(self):
# Extract metadata and keep a record of it
metadata = transcoders.discover(self.process_filename)
# metadata's stream info here is a DiscovererContainerInfo instance,
# it gets split into DiscovererAudioInfo and DiscovererVideoInfo;
# metadata itself has container-related data in tags, like video-codec
store_metadata(self.entry, metadata)
class InitialProcessor(CommonVideoProcessor):
"""
Initial processing steps for new video
@ -387,9 +377,9 @@ class InitialProcessor(CommonVideoProcessor):
'vorbis_quality', 'thumb_size'])
def process(self, medium_size=None, vp8_threads=None, vp8_quality=None,
vorbis_quality=None, thumb_size=None):
self.common_setup()
vorbis_quality=None, thumb_size=None, resolution=None):
self.common_setup(resolution=resolution)
self.store_orig_metadata()
self.transcode(medium_size=medium_size, vp8_quality=vp8_quality,
vp8_threads=vp8_threads, vorbis_quality=vorbis_quality)