kapsikkum-unmanic – Rev 1
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
unmanic.video_codec_handle.py
Written by: Josh.5 <jsunnex@gmail.com>
Date: 20 Sep 2019, (5:42 PM)
Copyright:
Copyright (C) Josh Sunnex - All Rights Reserved
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
OR OTHER DEALINGS IN THE SOFTWARE.
"""
from . import video_codecs
class VideoCodecHandle(object):
"""
VideoCodecHandle
Handle FFMPEG operations pertaining to video codec streams
"""
def __init__(self, file_probe):
self.file_probe = file_probe
self.encoding_args = {}
self.video_tracks_count = 0
# Configurable settings
self.disable_video_encoding = False
self.video_codec = 'h264' # Default to h264
self.video_encoder = 'libx264' # Default to libx264
def args(self):
"""
Return a dictionary of streams to map and streams to encode
:return:
"""
# Read stream data
self.encoding_args['streams_to_map'] = []
self.encoding_args['streams_to_encode'] = []
for stream in self.file_probe['streams']:
# If this is a video stream, then process the args
if stream['codec_type'] == 'video':
# By default the video stream will be re-encoded
just_copy_video_stream = False
# Ignore certain codec types (images)
if stream['codec_name'] in ['mjpeg']:
just_copy_video_stream = True
# Check for more details about the stream
if 'tags' in stream:
# Is 'mimetype' in the tags
if 'mimetype' in stream['tags']:
# If this video stream is really an embedded jpeg file (image/jpeg)
# simply copy the stream
if stream['tags']['mimetype'] == 'image/jpeg':
just_copy_video_stream = True
# If this video encoding is disabled. Then copy the stream
if self.disable_video_encoding:
just_copy_video_stream = True
# If the current video codec is the same as the configured destination
# codec, then do not re-encode the video
if stream['codec_name'] == self.video_codec:
just_copy_video_stream = True
if just_copy_video_stream:
# Video stream just needs to be copied
self.encoding_args['streams_to_encode'] = self.encoding_args['streams_to_encode'] + [
"-c:v:{}".format(self.video_tracks_count), "copy"
]
else:
# Video stream to be re-encoded
self.encoding_args['streams_to_encode'] = self.encoding_args['streams_to_encode'] + [
"-c:v:{}".format(self.video_tracks_count), self.video_encoder
]
self.video_tracks_count += 1
# Map this video stream to be processed
self.encoding_args['streams_to_map'] = self.encoding_args['streams_to_map'] + [
"-map", "0:{}".format(stream['index'])
]
return self.encoding_args
def set_video_codec_with_default_encoder(self, codec_name):
"""
Set the video encoder
:return:
"""
codec = video_codecs.grab_module(codec_name)
self.video_codec = codec_name.lower()
self.video_encoder = codec.codec_default_encoder()