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How to concatenate two MP4 files using FFmpeg?
...peg -i opening.mkv -i episode.mkv -i ending.mkv \
-filter_complex "[0:v] [0:a] [1:v] [1:a] [2:v] [2:a]
concat=n=3:v=1:a=1 [v] [a]" \
-map "[v]" -map "[a]" output.mkv
Note that this method performs a re-encode.
2. concat demuxer
Use this method when you want...
Insert a line break in mailto body
I would like to insert a line break into my mailto body.
I tried %0A, %0D and %0D%0A. Nothing worked for me.
I tested on Gmail, Yahoo, Apple Mail, Outlook 2010, Outlook.com and Thunderbird with Google Chrome on Mac OSX.
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In which order should floats be added to get the most precise result?
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107
Your instinct is basically right, sorting in ascending order (of magnitude) usually improves th...
LESS CSS nesting classes
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mingosmingos
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Java String split removed empty values
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506
split(delimiter) by default removes trailing empty strings from result array. To turn this mech...
数据挖掘——分词入门 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
... int strLen = str.length(); //传入字符串的长度
int j = 0;
String matchWord = ""; //根据词库里识别出来的词
int matchPos = 0; //根据词库里识别出来词后当前句子中的位置
while (j < strLen) { //从0字符匹配到字符串...
generate days from date range
...ps, procedures, or temp tables. The subquery generates dates for the last 10,000 days, and could be extended to go as far back or forward as you wish.
select a.Date
from (
select curdate() - INTERVAL (a.a + (10 * b.a) + (100 * c.a) + (1000 * d.a) ) DAY as Date
from (select 0 as a union all...
More elegant “ps aux | grep -v grep”
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edited Nov 8 '17 at 0:53
answered Feb 21 '12 at 10:31
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Override ActiveRecord attribute methods
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answered Dec 18 '08 at 22:35
Aaron LongwellAaron Longwell
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How to connect an existing SQL Server login to an existing SQL Server database user of same name
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The new way (SQL 2008 onwards) is to use ALTER USER
ALTER USER OrphanUser WITH LOGIN = correctedLoginName;
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