363 lines
12 KiB
Python
363 lines
12 KiB
Python
# -*- coding: utf-8 -*-
|
|
# vi:si:et:sw=4:sts=4:ts=4
|
|
from __future__ import division, with_statement
|
|
|
|
import os
|
|
from os.path import abspath, join, dirname, exists
|
|
|
|
import fractions
|
|
import subprocess
|
|
import sys
|
|
import shutil
|
|
import tempfile
|
|
import time
|
|
import re
|
|
import math
|
|
from glob import glob
|
|
|
|
import numpy as np
|
|
import Image
|
|
import ox
|
|
from ox.utils import json
|
|
|
|
|
|
img_extension='jpg'
|
|
|
|
FFMPEG2THEORA = 'ffmpeg2theora'
|
|
|
|
class AspectRatio(fractions.Fraction):
|
|
def __new__(cls, numerator, denominator=None):
|
|
if not denominator:
|
|
ratio = map(int, numerator.split(':'))
|
|
if len(ratio) == 1: ratio.append(1)
|
|
numerator = ratio[0]
|
|
denominator = ratio[1]
|
|
#if its close enough to the common aspect ratios rather use that
|
|
if abs(numerator/denominator - 4/3) < 0.03:
|
|
numerator = 4
|
|
denominator = 3
|
|
elif abs(numerator/denominator - 16/9) < 0.02:
|
|
numerator = 16
|
|
denominator = 9
|
|
return super(AspectRatio, cls).__new__(cls, numerator, denominator)
|
|
|
|
@property
|
|
def ratio(self):
|
|
return "%d:%d" % (self.numerator, self.denominator)
|
|
|
|
def stream(video, target, profile, info):
|
|
if not os.path.exists(target):
|
|
fdir = os.path.dirname(target)
|
|
if not os.path.exists(fdir):
|
|
os.makedirs(fdir)
|
|
|
|
dar = AspectRatio(info['video'][0]['display_aspect_ratio'])
|
|
'''
|
|
WebM look into
|
|
lag
|
|
mb_static_threshold
|
|
qmax/qmin
|
|
rc_buf_aggressivity=0.95
|
|
token_partitions=4
|
|
level / speedlevel
|
|
bt?
|
|
H264, should bitrates be a bit lower? other stuff possible?
|
|
'''
|
|
profile, format = profile.split('.')
|
|
|
|
if profile == '1080p':
|
|
height = 1080
|
|
|
|
audiorate = 48000
|
|
audioquality = 6
|
|
audiobitrate = None
|
|
audiochannels = None
|
|
if profile == '720p':
|
|
height = 720
|
|
|
|
audiorate = 48000
|
|
audioquality = 5
|
|
audiobitrate = None
|
|
audiochannels = None
|
|
if profile == '480p':
|
|
height = 480
|
|
|
|
audiorate = 44100
|
|
audioquality = 2
|
|
audiobitrate = None
|
|
audiochannels = 2
|
|
elif profile == '360p':
|
|
height = 360
|
|
|
|
audiorate = 44100
|
|
audioquality = 1
|
|
audiobitrate = None
|
|
audiochannels = 1
|
|
elif profile == '270p':
|
|
height = 270
|
|
|
|
audiorate = 44100
|
|
audioquality = 0
|
|
audiobitrate = None
|
|
audiochannels = 1
|
|
else:
|
|
height = 96
|
|
|
|
audiorate = 22050
|
|
audioquality = -1
|
|
audiobitrate = '22k'
|
|
audiochannels = 1
|
|
|
|
bpp = 0.17
|
|
fps = AspectRatio(info['video'][0]['framerate'])
|
|
|
|
width = int(dar * height)
|
|
width += width % 2
|
|
|
|
bitrate = height*width*fps*bpp/1000
|
|
aspect = dar.ratio
|
|
#use 1:1 pixel aspect ratio if dar is close to that
|
|
if abs(width/height - dar) < 0.02:
|
|
aspect = '%s:%s' % (width, height)
|
|
|
|
if info['audio']:
|
|
audio_settings = ['-ar', str(audiorate), '-aq', str(audioquality)]
|
|
if audiochannels and 'channels' in info['audio'][0] and info['audio'][0]['channels'] > audiochannels:
|
|
audio_settings += ['-ac', str(audiochannels)]
|
|
if audiobitrate:
|
|
audio_settings += ['-ab', audiobitrate]
|
|
if format == 'mp4':
|
|
audio_settings += ['-acodec', 'libfaac']
|
|
else:
|
|
audio_settings += ['-acodec', 'libvorbis']
|
|
else:
|
|
audio_settings = ['-an']
|
|
|
|
if info['video']:
|
|
video_settings = [
|
|
'-vb', '%dk'%bitrate, '-g', '%d' % int(fps*2),
|
|
'-s', '%dx%d'%(width, height),
|
|
'-aspect', aspect,
|
|
]
|
|
if format == 'mp4':
|
|
video_settings += [
|
|
'-vcodec', 'libx264',
|
|
'-flags', '+loop+mv4',
|
|
'-cmp', '256',
|
|
'-partitions', '+parti4x4+parti8x8+partp4x4+partp8x8+partb8x8',
|
|
'-me_method', 'hex',
|
|
'-subq', '7',
|
|
'-trellis', '1',
|
|
'-refs', '5',
|
|
'-bf', '3',
|
|
'-flags2', '+bpyramid+wpred+mixed_refs+dct8x8',
|
|
'-coder', '1',
|
|
'-me_range', '16',
|
|
'-keyint_min', '25', #FIXME: should this be related to fps?
|
|
'-sc_threshold','40',
|
|
'-i_qfactor', '0.71',
|
|
'-qmin', '10', '-qmax', '51',
|
|
'-qdiff', '4'
|
|
]
|
|
else:
|
|
video_settings = ['-vn']
|
|
|
|
ffmpeg = FFMPEG2THEORA.replace('2theora', '')
|
|
cmd = [ffmpeg, '-y', '-threads', '2', '-i', video] \
|
|
+ audio_settings \
|
|
+ video_settings
|
|
|
|
if format == 'mp4':
|
|
cmd += ["%s.mp4"%target]
|
|
else:
|
|
cmd += ['-f','webm', target]
|
|
|
|
print cmd
|
|
p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT)
|
|
p.communicate()
|
|
if format == 'mp4':
|
|
cmd = ['qt-faststart', "%s.mp4"%target, target]
|
|
print cmd
|
|
p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT)
|
|
p.communicate()
|
|
os.unlink("%s.mp4"%target)
|
|
return True
|
|
|
|
def run_command(cmd, timeout=10):
|
|
p = subprocess.Popen(cmd, stdout=open('/dev/null', 'w'), stderr=subprocess.STDOUT)
|
|
while timeout > 0:
|
|
time.sleep(0.2)
|
|
timeout -= 0.2
|
|
if p.poll() != None:
|
|
return p.returncode
|
|
if p.poll() == None:
|
|
os.kill(p.pid, 9)
|
|
killedpid, stat = os.waitpid(p.pid, os.WNOHANG)
|
|
return p.returncode
|
|
|
|
def frame(videoFile, frame, position, width=128, redo=False):
|
|
'''
|
|
params:
|
|
videoFile input
|
|
frame output
|
|
position as float in seconds
|
|
width of frame
|
|
redo boolean to extract file even if it exists
|
|
'''
|
|
if exists(videoFile):
|
|
frameFolder = os.path.dirname(frame)
|
|
if redo or not exists(frame):
|
|
if not exists(frameFolder):
|
|
os.makedirs(frameFolder)
|
|
cmd = ['oxframe', '-i', videoFile, '-o', frame, '-p', str(position), '-x', str(width)]
|
|
run_command(cmd)
|
|
|
|
def resize_image(image_source, image_output, width=None, size=None):
|
|
if exists(image_source):
|
|
source = Image.open(image_source).convert('RGB')
|
|
source_width = source.size[0]
|
|
source_height = source.size[1]
|
|
if size:
|
|
if source_width > source_height:
|
|
width = size
|
|
height = int(width / (float(source_width) / source_height))
|
|
height = height - height % 2
|
|
else:
|
|
height = size
|
|
width = int(height * (float(source_width) / source_height))
|
|
width = width - width % 2
|
|
|
|
else:
|
|
height = int(width / (float(source_width) / source_height))
|
|
height = height - height % 2
|
|
|
|
if width < source_width:
|
|
resize_method = Image.ANTIALIAS
|
|
else:
|
|
resize_method = Image.BICUBIC
|
|
output = source.resize((width, height), resize_method)
|
|
output.save(image_output)
|
|
|
|
def timeline(video, prefix):
|
|
cmd = ['oxtimeline', '-i', video, '-o', prefix]
|
|
p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
p.wait()
|
|
|
|
#stats based on timeline images
|
|
def average_color(prefix):
|
|
height = 64
|
|
width = 1500
|
|
frames = 0
|
|
pixels = []
|
|
color = np.asarray([0, 0, 0], dtype=np.float32)
|
|
|
|
for image in sorted(glob("%s.%d.*.png" % (prefix, height))):
|
|
timeline = Image.open(image)
|
|
frames += timeline.size[0]
|
|
p = np.asarray(timeline, dtype=np.float32)
|
|
p = np.sum(p, axis=0) / height #average color per frame
|
|
pixels.append(p)
|
|
|
|
for i in range(0, len(pixels)):
|
|
p = np.sum(pixels[i], axis=0) / frames
|
|
color += p
|
|
return list(map(float, color))
|
|
|
|
def get_distance(rgb0, rgb1):
|
|
dst = math.sqrt(pow(rgb0[0] - rgb1[0], 2) + pow(rgb0[0] - rgb1[0], 2) + pow(rgb0[0] - rgb1[0], 2))
|
|
return dst / math.sqrt(3 * pow(255, 2))
|
|
|
|
def cuts(prefix):
|
|
cuts = []
|
|
fps = 25
|
|
frames = 0
|
|
height = 64
|
|
width = 1500
|
|
pixels = []
|
|
for image in sorted(glob("%s.%d.*.png" % (prefix, height))):
|
|
timeline = Image.open(image)
|
|
frames += timeline.size[0]
|
|
pixels.append(timeline.load())
|
|
for frame in range(0, frames):
|
|
x = frame % width
|
|
if frame > 0:
|
|
dst = 0
|
|
image0 = int((frame - 1) / width)
|
|
image1 = int(frame / width)
|
|
for y in range(0, height):
|
|
rgb0 = pixels[image0][(x - 1) % width, y]
|
|
rgb1 = pixels[image1][x, y]
|
|
dst += get_distance(rgb0, rgb1) / height
|
|
#print frame / fps, dst
|
|
if dst > 0.1:
|
|
cuts.append(frame / fps)
|
|
return cuts
|
|
|
|
def divide(num, by):
|
|
# >>> divide(100, 3)
|
|
# [33, 33, 34]
|
|
arr = []
|
|
div = int(num / by)
|
|
mod = num % by
|
|
for i in range(int(by)):
|
|
arr.append(div + (i > by - 1 - mod))
|
|
return arr
|
|
|
|
def timeline_strip(movie, cuts, info, prefix):
|
|
_debug = False
|
|
duration = info['duration']
|
|
video_height = info['video'][0]['height']
|
|
video_width = info['video'][0]['width']
|
|
video_ratio = video_width / video_height
|
|
|
|
line_image = []
|
|
timeline_height = 64
|
|
timeline_width = 1500
|
|
fps = 25
|
|
frames = int(duration * fps)
|
|
if cuts[0] != 0:
|
|
cuts.insert(0, 0)
|
|
|
|
cuts = map(lambda x: int(round(x * fps)), cuts)
|
|
|
|
for frame in range(frames):
|
|
i = int(frame / timeline_width)
|
|
x = frame % timeline_width
|
|
if x == 0:
|
|
timeline_width = min(timeline_width, frames - frame)
|
|
timeline_image = Image.new('RGB', (timeline_width, timeline_height))
|
|
if frame in cuts:
|
|
c = cuts.index(frame)
|
|
if c +1 < len(cuts):
|
|
duration = cuts[c + 1] - cuts[c]
|
|
stills = math.ceil(duration / (video_width * timeline_height / video_height))
|
|
widths = divide(duration, stills)
|
|
still = frame
|
|
if _debug:
|
|
print widths, duration, stills, cuts[c], cuts[c + 1]
|
|
for s in range(int(stills)):
|
|
still_ratio = widths[s] / timeline_height
|
|
if video_ratio > still_ratio:
|
|
width = int(round(video_height * still_ratio))
|
|
left = int((video_width - width) / 2)
|
|
box = (left, 0, left + width, video_height)
|
|
else:
|
|
height = int(round(video_width / still_ratio))
|
|
top = int((video_height - height) / 2)
|
|
box = (0, top, video_width, top + height)
|
|
if _debug:
|
|
print frame, 'cut', c, 'still', s, still, 'width', widths[s], box
|
|
#FIXME: why does this have to be still+1?
|
|
frame_image = Image.open(movie.frame((still+1)/fps))
|
|
frame_image = frame_image.crop(box).resize((widths[s], timeline_height), Image.ANTIALIAS)
|
|
for x_ in range(widths[s]):
|
|
line_image.append(frame_image.crop((x_, 0, x_ + 1, timeline_height)))
|
|
still += widths[s]
|
|
if len(line_image) > frame:
|
|
timeline_image.paste(line_image[frame], (x, 0))
|
|
if x == timeline_width - 1:
|
|
timeline_file = '%sstrip.64.%04d.png' % (prefix, i)
|
|
if _debug:
|
|
print 'writing', timeline_file
|
|
timeline_image.save(timeline_file)
|
|
|