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86 lines
3.3 KiB
Python
86 lines
3.3 KiB
Python
"""
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@file
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@brief Utility to determine which sample rates divide evenly by which frame rates
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@author Jonathan Thomas <jonathan@openshot.org>
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@section LICENSE
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Copyright (c) 2008-2020 OpenShot Studios, LLC
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(http://www.openshotstudios.com). This file is part of
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OpenShot Video Editor (http://www.openshot.org), an open-source project
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dedicated to delivering high quality video editing and animation solutions
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to the world.
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OpenShot Video Editor is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenShot Video Editor is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
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"""
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import os
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import math
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import openshot
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from src.classes import info
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# Try to get the security-patched XML functions from defusedxml
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try:
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from defusedxml import minidom as xml
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except ImportError:
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from xml.dom import minidom as xml
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all_fps = []
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all_rates = [8000.0, 11025.0, 16000.0, 22050.0, 44100.0, 48000.0,
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88200.0, 96000.0, 176400.0, 192000.0, 3528000.0, 384000.0]
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# Loop through all profiles (include any FPS used in OpenShot)
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for file in os.listdir(info.PROFILES_PATH):
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filepath = os.path.join(info.PROFILES_PATH, file)
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profile = openshot.Profile(filepath)
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fps_num = profile.info.fps.num
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fps_den = profile.info.fps.den
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fps = float(fps_num) / float(fps_den)
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if fps not in all_fps:
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all_fps.append(fps)
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# Loop through all export presets (include any sample rates used in OpenShot)
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for file in os.listdir(info.EXPORT_PRESETS_PATH):
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filepath = os.path.join(info.EXPORT_PRESETS_PATH, file)
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xmldoc = xml.parse(filepath)
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sampleRate = float(xmldoc.getElementsByTagName("samplerate")[0].childNodes[0].nodeValue)
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if sampleRate not in all_rates:
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all_rates.append(sampleRate)
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# Display all common fps and sample rates
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print("---------------------------------")
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print("Common Sample Rates / Common FPS")
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print("---------------------------------")
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print("FPS: %s" % sorted(all_fps))
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print("Sample Rates: %s" % sorted(all_rates))
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print("---------------------------------")
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print("GOOD = Sample rate evenly divisible by frame rate")
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print("BAD = Sample rate NOT evenly divisible by frame rate")
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print("---------------------------------\n")
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print("(Sample Rate / FPS) = Samples Per Frame")
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print("---------------------------------")
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for fps in sorted(all_fps):
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for rate in sorted(all_rates):
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samples_per_frame = rate / fps
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has_remainder = math.fmod(rate, fps)
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if not has_remainder:
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# Print good case with rounding to 2 digits
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print("GOOD:\t%s / %.2f =\t%d" % (rate, fps, samples_per_frame))
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else:
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# Print bad case, without rounding the samples per frame
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print("BAD:\t%s / %.2f =\t%s.%s" %
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(rate, fps, str(samples_per_frame).split('.')[0], str(samples_per_frame).split('.')[1][:2]))
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