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added experimental gstreamer+cairo+rsvg based renderer

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Lukas Schauer 2021-03-26 03:59:03 +01:00
parent 2224b23c71
commit 2054bc1e97
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GPG key ID: 9C4DBE6CF438F333
3 changed files with 172 additions and 5 deletions
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36
renderlib.py
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@ -151,24 +151,49 @@ def rendertask_image(task):
def rendertask_video(task):
# iterate through the animation sequence frame by frame
# frame is a ... tbd
if args.gst:
import gstrenderer
renderer = gstrenderer.GstRenderer(1920, 1080, "{0}/video.mov".format(task.workdir))
cache = {}
for frameNr, frame in enumerate(task.sequence(task.parameters)):
cachedRenderFrame(frame, frameNr, task, cache)
if args.gst:
with SVGTemplate(task, None) as svg:
svg.replacetext()
svg.transform(frame)
renderer.render_frame(svg.svgstr)
else:
cachedRenderFrame(frame, frameNr, task, cache)
if args.gst:
renderer.close()
if args.only_frame:
if args.gst:
raise Exception("Single frame output not supported with gst renderer")
task.outfile = '{0}.frame{1:04d}.png'.format(task.outfile, args.only_frame)
# remove the dv/ts we are about to (re-)generate
ensureFilesRemoved(os.path.join(task.workdir, task.outfile))
if args.gst:
videosrc = "-i video.mov"
else:
videosrc = "-f image2 -i .frames/%04d.png"
if task.outfile.endswith('.png'):
if args.gst:
raise Exception("PNG output not supported with gst renderer")
cmd = 'cd {0} && cp ".frames/{1:04d}.png" "{2}"'.format(task.workdir, args.only_frame, task.outfile)
# invoke avconv aka ffmpeg and renerate a lossles-dv from the frames
# if we're not in debug-mode, suppress all output
elif task.outfile.endswith('.ts'):
#os.system("cd {0}; cp -R .frames /tmp/frames".format(task.workdir))
cmd = 'cd {0} && '.format(task.workdir)
cmd += 'ffmpeg -f image2 -i .frames/%04d.png '
cmd += 'ffmpeg {0} '.format(videosrc)
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:
@ -183,11 +208,12 @@ def rendertask_video(task):
cmd += '-shortest -f mpegts "{0}"'.format(task.outfile)
elif task.outfile.endswith('.mov'):
cmd = 'cd {0} && '.format(task.workdir)
cmd += 'ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -f image2 -i .frames/%04d.png -r 25 -shortest -c:v qtrle -f mov "{0}"'.format(task.outfile)
cmd += 'ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 {0} '.format(videosrc)
cmd += '-r 25 -shortest -c:v qtrle -f mov "{0}"'.format(task.outfile)
elif task.outfile.endswith('.mkv'):
cmd = 'cd {0} && ffmpeg -ar 48000 -ac 2 -f s16le -i /dev/zero -f image2 -i .frames/%04d.png -aspect 16:9 -c copy -shortest "{1}"'.format(task.workdir, task.outfile)
cmd = 'cd {0} && ffmpeg -ar 48000 -ac 2 -f s16le -i /dev/zero {2} -aspect 16:9 -c copy -shortest "{1}"'.format(task.workdir, task.outfile, videosrc)
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)
cmd = 'cd {0} && ffmpeg -ar 48000 -ac 2 -f s16le -i /dev/zero {2} -target pal-dv -aspect 16:9 -shortest "{1}"'.format(task.workdir, task.outfile, videosrc)
if debug:
print(cmd)