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dayu_timecode | ||
============= | ||
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|pypi| |Python| |Build Status| |GitHub license| | ||
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Timecode 的计算库。针对影视行业常见的各种timecode、frame | ||
进行计算。有下面的特点: | ||
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- 支持SMPTE NDF、SMPTE DF、DLP、SRT、FFMPEG、FCPX 多种格式的timecode | ||
- 目前支持到 fps=60 的高帧速率 | ||
- 支持hour loop 和 负数时间 | ||
- timecode、frame 之间自由转换 | ||
- 支持和其他常用的数字类型进行运算,无需转换(int、float、Fraction) | ||
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如何安装 | ||
======== | ||
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直接使用pip 即可安装 | ||
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.. code:: shell | ||
pip install -U dayu_timecode | ||
DayuTimeCode 使用简介 | ||
===================== | ||
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.. code:: python | ||
from dayu_timecode import DayuTimeCode | ||
# 针对各种输入,进行初始化 | ||
smpte_ndf_tc = DayuTimeCode('01:02:03:12', fps=24.0) | ||
smpte_df_tc = DayuTimeCode('01:09:00;02', fps=29.97) | ||
srt_tc = DayuTimeCode('00:00:03,245', fps=25.0) | ||
dlp_tc = DayuTimeCode('01:12:22:136', fps=24.0) | ||
ffmpeg_tc = DayuTimeCode('00:02:12.24', fps=24.0) | ||
fcpx_tc = DayuTimeCode('1/24s', fps=24.0) | ||
frame_int_tc = DayuTimeCode(100, fps=25.0) | ||
frame_long_tc = DayuTimeCode(86400.2, fps=24.0) | ||
time_tc = DayuTimeCode([24, 3], fps=24.0) | ||
# 时码、帧数转换 | ||
assert smpte_ndf_tc.timecode() == '01:02:03:12' | ||
assert smpte_ndf_tc.frame() == 89364.00 | ||
# 得到时码中 小时、分钟、秒、帧数的分量 | ||
assert smpte_ndf_tc.hour == 1 | ||
assert smpte_ndf_tc.minute == 2 | ||
assert smpte_ndf_tc.second == 3 | ||
assert smpte_ndf_tc.sub_frame == 12 | ||
a = DayuTimeCode('01:02:03:12', fps=24.0) | ||
b = DayuTimeCode(86400.2, fps=24.0) | ||
# 加法、减法、乘法、除法 | ||
print a + b # <DayuTimeCode>(02:02:03:12, 175764.20, 24.00) | ||
print a - b # <DayuTimeCode>(00:02:03:12, 2963.80, 24.00) | ||
print a * 3 # <DayuTimeCode>(03:06:10:12, 268092.00, 24.00) | ||
print a / 2 # <DayuTimeCode>(00:31:01:18, 44682.00, 24.00) | ||
# 各种比较方式 | ||
print a == b | ||
print a > b | ||
print a >= b | ||
print a < b | ||
print a <= b | ||
print a != b | ||
# 类型转换 | ||
print float(a) | ||
print int(a) | ||
# 变速(指定一个起点,以及变速的速度) | ||
start_tc = DayuTimeCode(0) | ||
print a.retime(start_tc, 2.0) # 表示从0 开始,两倍速播放后的timecode | ||
DayuTimeRange 使用简介 | ||
====================== | ||
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DayuTimeRange 由两个DayuTimeCode 组成的一个时间区域。 | ||
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.. code:: python | ||
# 初始化 | ||
start = DayuTimeCode(0) | ||
end = DayuTimeCode(100) | ||
time_range = DayuTimeRange(start, end) | ||
# zero_length_range = DayuTimeRange(DayuTimeCode(10), DayuTimeCode(10)) # 会出错,因为start 和end 都是同一个时间 | ||
# 访问属性 | ||
print time_range.start # 起点 | ||
print time_range.end # 终点 | ||
print time_range.duration.frame() # 获得 frame 长度 | ||
print len(time_range) # 获得 frame 长度的另一种方法 | ||
# 加法、减法、乘法、除法 | ||
print time_range + 10 # 表示整个time_range 向右移动 10 frame | ||
print time_range - 20 # 表示整个time_range 向左移动 20 frame | ||
print time_range * 2 # 表示整个time_range 起点不动,长度变成原来的 2 倍 | ||
print time_range / 3 # 表示整个time_range 起点不动,长度变成原来的 三分之一 | ||
# 处理handle | ||
time_range.handle(10, 10) # 表示time_range 的start 向左增加 10 frame,end 向右增加 10 frame | ||
# 切镜头处理 | ||
cut_point = DayuTimeCode(20) | ||
print time_range.cut(cut_point) # 得到两个区域 (0 - 20), (20 - 100) | ||
# 判断timecode 或者一个time range 是否在当前timerange 的内部 | ||
sample_tc = DayuTimeCode(20) | ||
sample_time_range = DayuTimeRange(DayuTimeCode(30), DayuTimeCode(70)) | ||
assert sample_tc in time_range | ||
assert sample_time_range in time_range | ||
# 两个DayuTimeRange 之间的交集、并集、差异 运算 | ||
a = DayuTimeRange(DayuTimeCode(0), DayuTimeCode(100)) | ||
b = DayuTimeRange(DayuTimeCode(50), DayuTimeCode(150)) | ||
print a & b # 二者之间交叠的部分 (50 - 100) | ||
print a | b # 二者的并集运算 (0 - 150) | ||
print a ^ b # 二者的差异运算 (0 - 50), (100 - 150) | ||
# 遍历time range 内的所有时码 | ||
for tc in time_range: | ||
print tc # 会逐一打印 从 DayuTimeCode(0) ~ DayuTimeCode(99) | ||
.. |pypi| image:: https://img.shields.io/badge/pypi-0.2-green.svg | ||
:target: https://pypi.org/project/dayu-timecode/ | ||
.. |Python| image:: https://img.shields.io/badge/python-2.7-blue.svg | ||
:target: | ||
.. |Build Status| image:: https://travis-ci.org/phenom-films/dayu_timecode.svg?branch=master | ||
:target: https://travis-ci.org/phenom-films/dayu_timecode | ||
.. |GitHub license| image:: https://img.shields.io/github/license/phenom-films/dayu_timecode.svg | ||
:target: https://github.com/phenom-films/dayu_timecode/blob/master/LICENSE |