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Add --min-chunk-time in split_silence example

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Karl Kroening 2018-01-15 22:18:19 -08:00
parent 4c161bb401
commit dad4c3cb55
1 changed files with 21 additions and 0 deletions
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21
examples/split_silence.py
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@ -2,6 +2,7 @@
from __future__ import unicode_literals from __future__ import unicode_literals
import argparse import argparse
import copy
import errno import errno
import ffmpeg import ffmpeg
import json import json
@ -27,6 +28,7 @@ parser.add_argument('--silence-duration', default=DEFAULT_DURATION, type=float,
parser.add_argument('--start-time', type=float, help='Start time (seconds)') parser.add_argument('--start-time', type=float, help='Start time (seconds)')
parser.add_argument('--end-time', type=float, help='End time (seconds)') parser.add_argument('--end-time', type=float, help='End time (seconds)')
parser.add_argument('--padding', type=float, default=0., help='Output silence padding (seconds)') parser.add_argument('--padding', type=float, default=0., help='Output silence padding (seconds)')
parser.add_argument('--min-chunk-time', type=float, default=0., help='Minimum chunk duration')
parser.add_argument('--metadata-filename', help='Optional metadata output file') parser.add_argument('--metadata-filename', help='Optional metadata output file')
parser.add_argument('-v', dest='verbose', action='store_true', help='Verbose mode') parser.add_argument('-v', dest='verbose', action='store_true', help='Verbose mode')
@ -108,6 +110,22 @@ def _makedirs(path):
raise raise
def combine_chunks(chunk_times, min_chunk_time):
chunk_times = copy.copy(chunk_times)
pop_chunk = lambda chunk_times: (chunk_times[0][0], chunk_times[0][1], chunk_times[1:])
new_chunk_times = []
while len(chunk_times) != 0:
# Start new chunk.
start_time, end_time, chunk_times = pop_chunk(chunk_times)
time = end_time - start_time
while time < min_chunk_time and len(chunk_times) != 0:
# Combine with next chunk.
_, end_time, chunk_times = pop_chunk(chunk_times)
time = end_time - start_time
new_chunk_times.append((start_time, end_time))
return new_chunk_times
def split_audio( def split_audio(
in_filename, in_filename,
out_pattern, out_pattern,
@ -116,10 +134,13 @@ def split_audio(
start_time=None, start_time=None,
end_time=None, end_time=None,
padding=0., padding=0.,
min_chunk_time=0.,
metadata_filename=None, metadata_filename=None,
verbose=False, verbose=False,
): ):
chunk_times = get_chunk_times(in_filename, silence_threshold, silence_duration, start_time, end_time) chunk_times = get_chunk_times(in_filename, silence_threshold, silence_duration, start_time, end_time)
if min_chunk_time > 0.:
chunk_times = combine_chunks(chunk_times, min_chunk_time)
metadata = [] metadata = []
for i, (start_time, end_time) in enumerate(chunk_times): for i, (start_time, end_time) in enumerate(chunk_times):