def combine_movie_files(self) -> None:
kwargs = {
"remove_non_integer_files": True,
"extension": self.movie_file_extension,
}
if self.scene.start_at_animation_number is not None:
kwargs["min_index"] = self.scene.start_at_animation_number
if self.scene.end_at_animation_number is not None:
kwargs["max_index"] = self.scene.end_at_animation_number
else:
kwargs["remove_indices_greater_than"] = self.scene.num_plays - 1
partial_movie_files = get_sorted_integer_files(
self.partial_movie_directory, **kwargs)
if len(partial_movie_files) == 0:
log.warning("No animations in this scene")
return
# Write a file partial_file_list.txt containing all
# partial movie files
file_list = os.path.join(self.partial_movie_directory,
"partial_movie_file_list.txt")
with open(file_list, 'w') as fp:
for pf_path in partial_movie_files:
if os.name == 'nt':
pf_path = pf_path.replace('\\', '/')
fp.write(f"file \'{pf_path}\'\n")
movie_file_path = self.get_movie_file_path()
commands = [
FFMPEG_BIN,
'-y', # overwrite output file if it exists
'-f',
'concat',
'-safe',
'0',
'-i',
file_list,
'-loglevel',
'error',
'-c',
'copy',
movie_file_path
]
if not self.includes_sound:
commands.insert(-1, '-an')
combine_process = sp.Popen(commands)
combine_process.wait()
def combine_movie_files(self):
# Manim renders the scene as many smaller movie files
# which are then concatenated to a larger one. The reason
# for this is that sometimes video-editing is made easier when
# one works with the broken up scene, which effectively has
# cuts at all the places you might want. But for viewing
# the scene as a whole, one of course wants to see it as a
# single piece.
kwargs = {
"remove_non_integer_files": True,
"extension": self.movie_file_extension,
}
if self.scene.start_at_animation_number is not None:
kwargs["min_index"] = self.scene.start_at_animation_number
if self.scene.end_at_animation_number is not None:
kwargs["max_index"] = self.scene.end_at_animation_number
else:
kwargs["remove_indices_greater_than"] = self.scene.num_plays - 1
partial_movie_files = get_sorted_integer_files(
self.partial_movie_directory,
**kwargs
)
if len(partial_movie_files) == 0:
print("No animations in this scene")
return
# Write a file partial_file_list.txt containing all
# partial movie files
file_list = os.path.join(
self.partial_movie_directory,
"partial_movie_file_list.txt"
)
with open(file_list, 'w') as fp:
for pf_path in partial_movie_files:
if os.name == 'nt':
pf_path = pf_path.replace('\\', '/')
fp.write("file \'{}\'\n".format(pf_path))
movie_file_path = self.get_movie_file_path()
commands = [
FFMPEG_BIN,
'-y', # overwrite output file if it exists
'-f', 'concat',
'-safe', '0',
'-i', file_list,
'-c', 'copy',
'-loglevel', 'error',
movie_file_path
]
if not self.includes_sound:
commands.insert(-1, '-an')
combine_process = subprocess.Popen(commands)
combine_process.wait()
if self.includes_sound:
sound_file_path = movie_file_path.replace(
self.movie_file_extension, ".wav"
)
# Makes sure sound file length will match video file
self.add_audio_segment(AudioSegment.silent(0))
self.audio_segment.export(
sound_file_path,
bitrate='312k',
)
temp_file_path = movie_file_path.replace(".", "_temp.")
commands = [
"ffmpeg",
"-i", movie_file_path,
"-i", sound_file_path,
'-y', # overwrite output file if it exists
"-c:v", "copy",
"-c:a", "aac",
"-b:a", "320k",
# select video stream from first file
"-map", "0:v:0",
# select audio stream from second file
"-map", "1:a:0",
'-loglevel', 'error',
# "-shortest",
temp_file_path,
]
subprocess.call(commands)
shutil.move(temp_file_path, movie_file_path)
subprocess.call(["rm", sound_file_path])
self.print_file_ready_message(movie_file_path)
def combine_movie_files(self):
# Manim renders the scene as many smaller movie files
# which are then concatenated to a larger one. The reason
# for this is that sometimes video-editing is made easier when
# one works with the broken up scene, which effectively has
# cuts at all the places you might want. But for viewing
# the scene as a whole, one of course wants to see it as a
# single piece.
kwargs = {
"remove_non_integer_files": True,
"extension": self.movie_file_extension,
}
if self.scene.start_at_animation_number is not None:
kwargs["min_index"] = self.scene.start_at_animation_number
if self.scene.end_at_animation_number is not None:
kwargs["max_index"] = self.scene.end_at_animation_number
else:
kwargs["remove_indices_greater_than"] = self.scene.num_plays - 1
partial_movie_files = get_sorted_integer_files(
self.partial_movie_directory, **kwargs)
if len(partial_movie_files) == 0:
print("No animations in this scene")
return
# Write a file partial_file_list.txt containing all
# partial movie files
file_list = os.path.join(self.partial_movie_directory,
"partial_movie_file_list.txt")
with open(file_list, 'w') as fp:
for pf_path in partial_movie_files:
if os.name == 'nt':
pf_path = pf_path.replace('\\', '/')
fp.write("file \'{}\'\n".format(pf_path))
movie_file_path = self.get_movie_file_path()
commands = [
FFMPEG_BIN,
'-y', # overwrite output file if it exists
'-f',
'concat',
'-safe',
'0',
'-i',
file_list,
'-loglevel',
'error',
'-c',
'copy',
movie_file_path
]
if not self.includes_sound:
commands.insert(-1, '-an')
combine_process = subprocess.Popen(commands)
combine_process.wait()
if self.includes_sound:
sound_file_path = movie_file_path.replace(
self.movie_file_extension, ".wav")
# Makes sure sound file length will match video file
self.add_audio_segment(AudioSegment.silent(0))
self.audio_segment.export(
sound_file_path,
bitrate='312k',
)
temp_file_path = movie_file_path.replace(".", "_temp.")
commands = [
"ffmpeg",
"-i",
movie_file_path,
"-i",
sound_file_path,
'-y', # overwrite output file if it exists
"-c:v",
"copy",
"-c:a",
"aac",
"-b:a",
"320k",
# select video stream from first file
"-map",
"0:v:0",
# select audio stream from second file
"-map",
"1:a:0",
'-loglevel',
'error',
# "-shortest",
temp_file_path,
]
subprocess.call(commands)
shutil.move(temp_file_path, movie_file_path)
subprocess.call(["rm", sound_file_path])
self.print_file_ready_message(movie_file_path)
