def generate_gif():
logger.info('gif THAT')
exec_cmd.run('ffmpeg -y -i ' + 'temp/final.avi -vf ' +
'fps=24,scale=1080:-1:' +
'flags=lanczos,palettegen temp/palette.png')
exec_cmd.run(
'ffmpeg -i temp/final.avi ' + '-i temp/palette.png -filter_complex ' +
'"fps=24,scale=1080:-1:flags=lanczos[x];[x][1:v]paletteuse" ' +
'out/you_can_code_a.gif')
def concat_scenes():
logger.info('concatenate the scenes')
to_concat = [
"cut1.avi", "dlvideo.avi", "cut5.avi", "subs.avi", "cut4.avi",
"add_meta.avi", "cut3.avi", "concat.avi", "cut7.avi", "gifthat.avi",
"empty_screen.avi", "meta.avi", "cut8.avi"
]
with open('temp/list.txt', 'w') as f:
for vid in to_concat:
print("file '" + vid + "'", file=f)
exec_cmd.run('ffmpeg -f concat -i temp/list.txt' +
' -c copy -y temp/concat_nosub.avi')
def cut_scenes():
global invid
logger.info('cut the scenes used in the gif')
cuttimes = [("00:00:40.5", "00:00:57.0"), ("00:01:00.7", "00:01:04.5"),
("00:01:13.5", "00:01:15.2"), ("00:01:20.3", "00:01:31.5"),
("00:01:38.8", "00:01:40.9"), ("00:01:47.2", "00:01:48.3"),
("00:01:50.6", "00:01:53.3"), ("00:01:55.9", "00:02:00.0"),
("00:00:27.0", "00:00:27.1")]
n = 1
cuts = []
for cut in cuttimes:
outvid = 'temp/cut' + str(n) + '.avi'
cuts.append(outvid)
n += 1
command = ("ffmpeg -i " + invid + " -ss " + cut[0] +
' -filter:v "crop=1280:540:0:90"' + " -c:v ffv1" + " -to " +
cut[1] + ' -r 24 -y ' + outvid)
exec_cmd.run(command)
def subVideo(subs, inputvid, outputvid):
"""Take a list a subtitles, make each png with makePngSub()
and add the pngs to the video at the given intervals"""
n = 1
subfiles = []
for sub in subs:
subfile = makePngSub(text=sub[0],
color=sub[1],
position=sub[2],
filename=str(n))
subfiles.append(subfile)
n += 1
def writeFilterblocks(subs):
"""write the complex filter to chain-add all the png in one shot"""
n = 0
filter_blocks = []
for sub in subs:
timing = sub[3]
blocks = [''] * 4
if n == 0:
blocks[0] = '"[0:v]'
else:
blocks[0] = '[tmp]'
n += 1
blocks[1] = '[' + str(n) + ':v]'
blocks[2] = "overlay=enable='between(t,{})'".format(timing)
if n != len(subs):
blocks[3] = ' [tmp]; '
else:
blocks[3] = '"'
filter_blocks += blocks
return filter_blocks
inputblocks = ['ffmpeg -i ' + inputvid
] + ['-i ' + subfile for subfile in subfiles]
inputstr = ' '.join(inputblocks)
filterstr = '-filter_complex ' + ''.join(writeFilterblocks(subs))
#outputstr = '-y '+ outputvid
outputstr = '-y -c:v ffv1 ' + outputvid
command = inputstr + ' ' + filterstr + ' ' + outputstr
exec_cmd.run(command)
def snapshotBackground(cutscene):
"""Take a 1-frame shot from the video, used as background for the terminal"""
command = 'ffmpeg -ss 00:00:00 -i {} -vf "select=eq(n\,0)" -q:v 1 -y temp/background.png'.format(
cutscene)
exec_cmd.run(command)
def makeVideo(seqname, framerate='24', r='24'):
"""Take all seqname png and join them in an AVI video."""
exec_cmd.run('ffmpeg -framerate ' + framerate + ' -i temp/frames/' +
seqname + '%04d.png' + ' -c:v ffv1' + ' -r ' + r +
' -pix_fmt yuv420p -y ' + 'temp/' + seqname + '.avi')
def download_youtube():
logger.info('Download youtube video via youtube-dl')
url = 'https://www.youtube.com/watch?v=TS_59Y7bYoA'
exec_cmd.run(r'youtube-dl -f 136 -o ' + invid + ' ' + url)