67 lines
2.3 KiB
Python
67 lines
2.3 KiB
Python
# Copyright 2019 The MediaPipe Authors.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
"""Generate a MediaSequence metadata for MediaPipe input."""
|
|
from __future__ import absolute_import
|
|
from __future__ import division
|
|
from __future__ import print_function
|
|
|
|
import sys
|
|
|
|
from absl import app
|
|
from absl import flags
|
|
import six
|
|
import tensorflow.compat.v1 as tf
|
|
from mediapipe.util.sequence import media_sequence as ms
|
|
|
|
FLAGS = flags.FLAGS
|
|
SECONDS_TO_MICROSECONDS = 1000000
|
|
|
|
|
|
def bytes23(string):
|
|
"""Creates a bytes string in either Python 2 or 3."""
|
|
if sys.version_info >= (3, 0):
|
|
return bytes(string, 'utf8')
|
|
else:
|
|
return bytes(string)
|
|
|
|
|
|
def main(argv):
|
|
if len(argv) > 3:
|
|
raise app.UsageError('Too many command-line arguments.')
|
|
|
|
if not flags.FLAGS.path_to_input_video:
|
|
raise ValueError('You must specify the path to the input video.')
|
|
if not flags.FLAGS.clip_end_time_sec:
|
|
raise ValueError('You must specify the clip end timestamp in seconds.')
|
|
if flags.FLAGS.clip_start_time_sec >= flags.FLAGS.clip_end_time_sec:
|
|
raise ValueError(
|
|
'The clip start time must be greater than the clip end time.')
|
|
metadata = tf.train.SequenceExample()
|
|
ms.set_clip_data_path(bytes23(flags.FLAGS.path_to_input_video), metadata)
|
|
ms.set_clip_start_timestamp(
|
|
flags.FLAGS.clip_start_time_sec * SECONDS_TO_MICROSECONDS, metadata)
|
|
ms.set_clip_end_timestamp(
|
|
flags.FLAGS.clip_end_time_sec * SECONDS_TO_MICROSECONDS, metadata)
|
|
with open('/tmp/mediapipe/metadata.pb', 'wb') as writer:
|
|
writer.write(six.ensure_binary(metadata.SerializeToString()))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
flags.DEFINE_string('path_to_input_video', '', 'Path to the input video.')
|
|
flags.DEFINE_integer('clip_start_time_sec', 0,
|
|
'Clip start timestamp in seconds')
|
|
flags.DEFINE_integer('clip_end_time_sec', 10, 'Clip end timestamp in seconds')
|
|
app.run(main)
|