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183
utils/encodeCDN.py
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183
utils/encodeCDN.py
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import os
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import subprocess
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import shutil
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import platform
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segment = ' -init_seg_name chunks/init-stream$RepresentationID$.m4s -media_seg_name chunks/chunk-stream$RepresentationID$-$Number%05d$.m4s'
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if platform.system() == 'Linux':
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segment = ' -init_seg_name chunks/init-stream\$RepresentationID\$.m4s -media_seg_name chunks/chunk-stream\$RepresentationID\$-\$Number%05d\$.m4s'
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def changeM4SToHTML(mpdpath, chunkspath):
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for filename in os.listdir(chunkspath):
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infilename = os.path.join(chunkspath, filename)
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if not os.path.isfile(infilename): continue
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newname = infilename.replace('.m4s', '.webp')
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_ = os.rename(infilename, newname)
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# Modify manifest
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with open(mpdpath, 'r') as file :
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filedata = file.read()
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# Replace the target string
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filedata = filedata.replace('.m4s', '.webp')
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# Write the file out again
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with open(mpdpath, 'w') as file:
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file.write(filedata)
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def createFolder(cdnFolder, resolution):
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if platform.system() == 'Linux':
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if not os.path.exists(os.path.join(cdnFolder, resolution, 'chunks')):
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os.makedirs(os.path.join(cdnFolder, resolution, 'chunks'))
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else:
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if not os.path.exists('chunks'):
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os.makedirs('chunks')
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if not os.path.exists(os.path.join(cdnFolder, resolution)):
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os.makedirs(os.path.join(cdnFolder, resolution))
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def create_sprites(cdn_folder):
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"""
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Creates video player sprites
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"""
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video_file = os.path.join(cdn_folder, 'x264.720p.mp4')
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# Generating Sprites
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if not os.path.exists(os.path.join(cdn_folder, 'thumbs.vtt')) and os.path.exists(video_file):
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os.system(f'python makesprites.py "{video_file}"')
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os.rename("thumbs.vtt", os.path.join(cdn_folder, 'thumbs.vtt'))
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os.rename("sprite.jpg", os.path.join(cdn_folder, 'sprite.jpg'))
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shutil.rmtree('thumbs')
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shutil.rmtree('logs')
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return
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print('Skipped Sprites')
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def encode_720p_fallback(cdn_folder, video_source, upscale_output, aspect_ratio):
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"""
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Fallback video stream for apple devices
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"""
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output = os.path.join(cdn_folder, 'x264.720p.mp4')
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if os.path.exists(output):
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print('Skipped 720p Encode')
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return
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command = (
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f'ffmpeg -v quiet -stats -i "{upscale_output}" -i "{video_source}" '
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'-map 0:v:0 -map 1:a:0 '
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'-c:v libx264 -crf 22 -pix_fmt yuv420p '
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f'-vf scale=1280:720,setsar=1:1 -aspect {aspect_ratio} '
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'-c:a aac -b:a 128k '
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f'-sn -map_metadata -1 -movflags +faststart "{output}"'
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)
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subprocess.call(command, shell=True)
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def encode_720p(cdn_folder, video_source, upscale_output, aspect_ratio):
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output = os.path.join(cdn_folder, '720', 'manifest.mpd')
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if os.path.exists(output):
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print('Skipped 720p DASH Encode')
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return
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print('Encoding 720p')
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createFolder(cdn_folder, '720')
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command = (
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f'ffmpeg -v quiet -stats -i "{upscale_output}" -i "{video_source}" '
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'-map 0:v:0 -map 1:a:0 '
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'-c:v libx264 -crf 22 -preset medium -pix_fmt yuv420p -g 24 -keyint_min 24 -sc_threshold 0 -x264-params keyint=24:min-keyint=24:scenecut=0 '
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f'-vf scale=1280:720,setsar=1:1 -aspect {aspect_ratio} '
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f'{segment} "{output}"'
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)
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subprocess.call(command, shell=True)
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if platform.system() != 'Linux':
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shutil.move('chunks', os.path.join(cdn_folder, '720', 'chunks'))
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changeM4SToHTML(output, os.path.join(cdn_folder, '720', 'chunks'))
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def EncodeCDN(f, cdnFolder, inputAspect, upscaleOut, interpolateOut, INTERPOLATE_4K, interpolate_4k_output):
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out1080mpd = os.path.join(cdnFolder, '1080', 'manifest.mpd')
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out1080mpd48 = os.path.join(cdnFolder, '1080i', 'manifest.mpd')
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out2160mpd = os.path.join(cdnFolder, '2160', 'manifest.mpd')
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out2160mpd48 = os.path.join(cdnFolder, '2160i', 'manifest.mpd')
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# 720p
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encode_720p(cdnFolder, f, upscaleOut, inputAspect)
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encode_720p_fallback(cdnFolder, f, upscaleOut, inputAspect)
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create_sprites(cdnFolder)
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# 1080p
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if not os.path.exists(out1080mpd):
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print('Encoding 1080p')
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createFolder(cdnFolder, '1080')
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subprocess.call('ffmpeg -v quiet -stats -i "' + upscaleOut + '" -i "' + f + '" -map 0:v:0 -map 1:a:0'
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+ ' -c:v libsvtav1 -preset 6 -crf 26 -pix_fmt yuv420p -svtav1-params keyint=1s:tune=0 -vf scale=1920:1080,setsar=1:1 -aspect ' + inputAspect
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+ ' -c:a aac -b:a 128k -ac 2 -sn -map_metadata -1 -seg_duration 10 -use_template 1 -use_timeline 1'
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+ segment + ' "' + out1080mpd + '"', shell=True)
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if platform.system() != 'Linux':
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shutil.move('chunks', os.path.join(cdnFolder, '1080', 'chunks'))
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changeM4SToHTML(out1080mpd, os.path.join(cdnFolder, '1080', 'chunks'))
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else:
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print('Skipped 1080p Encode')
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# 1080p 48fps
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if not os.path.exists(out1080mpd48):
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print('Encoding 1080p 48fps')
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createFolder(cdnFolder, '1080i')
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# DASH av1 1080p
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subprocess.call('ffmpeg -v quiet -stats -i "' + interpolateOut + '" -i "' + f + '" -map 0:v:0 -map 1:a:0'
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+ ' -c:v libsvtav1 -preset 6 -crf 26 -pix_fmt yuv420p -svtav1-params keyint=1s:tune=0 -vf scale=1920:1080,setsar=1:1 -aspect ' + inputAspect
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+ ' -c:a aac -b:a 128k -ac 2 -sn -map_metadata -1 -seg_duration 10 -use_template 1 -use_timeline 1'
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+ segment + ' "' + out1080mpd48 + '"', shell=True)
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if platform.system() != 'Linux':
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shutil.move('chunks', os.path.join(cdnFolder, '1080i', 'chunks'))
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changeM4SToHTML(out1080mpd48, os.path.join(cdnFolder, '1080i', 'chunks'))
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else:
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print('Skipped 1080p 48fps Encode')
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# 2160p
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if not os.path.exists(out2160mpd):
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print('Encoding 2160p')
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createFolder(cdnFolder, '2160')
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subprocess.call('ffmpeg -v quiet -stats -i "' + upscaleOut + '" -i "' + f + '" -map 0:v:0 -map 1:a:0'
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+ ' -c:v libsvtav1 -preset 6 -crf 26 -pix_fmt yuv420p -svtav1-params keyint=1s:tune=0 -vf "scale=\'min(3840,iw)\':-2,setsar=1:1" -aspect ' + inputAspect
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+ ' -c:a aac -b:a 128k -ac 2 -sn -map_metadata -1 -seg_duration 10 -use_template 1 -use_timeline 1'
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+ segment + ' "' + out2160mpd + '"', shell=True)
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if platform.system() != 'Linux':
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shutil.move('chunks', os.path.join(cdnFolder, '2160', 'chunks'))
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changeM4SToHTML(out2160mpd, os.path.join(cdnFolder, '2160', 'chunks'))
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else:
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print('Skipped 2160p Encode')
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# 2160p 48fps
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if not os.path.exists(out2160mpd48) and INTERPOLATE_4K:
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print('Encoding 2160p 48fps')
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createFolder(cdnFolder, '2160i')
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subprocess.call('ffmpeg -v quiet -stats -i "' + interpolate_4k_output + '" -i "' + f + '" -map 0:v:0 -map 1:a:0'
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+ ' -c:v libsvtav1 -preset 6 -crf 26 -pix_fmt yuv420p -svtav1-params keyint=1s:tune=0 -vf "scale=\'min(3840,iw)\':-2,setsar=1:1" -aspect ' + inputAspect
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+ ' -c:a aac -b:a 128k -ac 2 -sn -map_metadata -1 -seg_duration 10 -use_template 1 -use_timeline 1'
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+ segment + ' "' + out2160mpd48 + '"', shell=True)
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if platform.system() != 'Linux':
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shutil.move('chunks', os.path.join(cdnFolder, '2160i', 'chunks'))
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changeM4SToHTML(out2160mpd48, os.path.join(cdnFolder, '2160i', 'chunks'))
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else:
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print('Skipped 2160p 48fps Encode')
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