filmroellchen/intro-outro-generator
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add support for background audio during intro

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This commit is contained in:
Andreas Hubel 2017-10-24 18:12:10 +02:00
parent 7b19aa5b20
commit c593a0dd07
3 changed files with 22 additions and 5 deletions
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18
renderlib.py
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@ -37,7 +37,12 @@ def easeDelay(easer, delay, t, b, c, d, *args):
class Rendertask:
def __init__(self, infile, sequence, parameters={}, outfile=None, workdir='.'):
if isinstance(infile, list):
self.infile = infile[0]
self.audiofile = infile[1]
else:
self.infile = infile
self.audiofile = None
self.sequence = sequence
self.parameters = parameters
self.outfile = outfile
@ -153,7 +158,18 @@ def rendertask(task):
# invoke avconv aka ffmpeg and renerate a lossles-dv from the frames
# if we're not in debug-mode, suppress all output
if task.outfile.endswith('.ts'):
cmd = 'cd {0} && ffmpeg -f image2 -i .frames/%04d.png -ar 48000 -ac 1 -f s16le -i /dev/zero -ar 48000 -ac 1 -f s16le -i /dev/zero -map 0:0 -c:v mpeg2video -q:v 0 -aspect 16:9 -map 1:0 -map 2:0 -shortest -f mpegts "{1}"'.format(task.workdir, task.outfile)
cmd = 'cd {0} && '.format(task.workdir)
cmd += 'ffmpeg -f image2 -i .frames/%04d.png '
if task.audiofile is None:
cmd += '-ar 48000 -ac 1 -f s16le -i /dev/zero -ar 48000 -ac 1 -f s16le -i /dev/zero '
else:
cmd += '-i {0} -i {0} '.format(task.audiofile)
cmd += '-map 0:0 -c:v mpeg2video -q:v 0 -aspect 16:9'
if task.audiofile is None:
cmd += '-map 1:0 -map 2:0 '
else:
cmd += '-map 1:0 -c:a copy -map 2:0 -c:a copy '
cmd += '-shortest -f mpegts "{0}"'.format(task.outfile)
else:
cmd = 'cd {0} && ffmpeg -ar 48000 -ac 2 -f s16le -i /dev/zero -f image2 -i .frames/%04d.png -target pal-dv -aspect 16:9 -shortest "{1}"'.format(task.workdir, task.outfile)

4
subscribe/__init__.py
View file

@ -98,7 +98,7 @@ def pauseFrames(p):
def debug():
render(
'intro.svg',
['intro.svg', 'intro_audio.ts'],
'../intro.ts',
introFrames,
{
@ -127,7 +127,7 @@ def tasks(queue, args):
# generate a task description and put them into the queue
queue.put(Rendertask(
infile = 'intro.svg',
infile = ['intro.svg', 'intro_audio.ts'],
outfile = str(event['id']) + ".ts",
sequence = introFrames,
parameters = {

1
subscribe/artwork/gen_frames
View file

@ -1 +1,2 @@
ffmpeg -i session_opener-25fps.mp4 given-frames/frame%04d.png
ffmpeg -i session_opener-25fps.mp4 -map 0:a -ar 48000 -ac 1 -f s16le -shortest -f mpegts intro_audio.ts