concat

FFMPEG add image at the end of a video

由 旧时模样 提交于 2020-06-12 06:50:14
问题 I need to add an image for one second at the end of a .mp4 video file using FFMPEG. My video size is WxH and my image size is MxM, so video and image sizes are different. I have tried different options in order to add the image at the end of the video as: ffmpeg -i "concat: videoIn.mp4|image.jpg" -c copy videoOut.mp4 or ffmpeg -i videoIn.mp4 -loop 1 -t 1 -i image.jpg -f lavfi -t 2 -i anullsrc -filter_complex "[0:v][0:a][1:v][2:a] concat = n=2:v=1:a=1[v][a] -c:v libx264 -c:a aac -strict -2

python pandas : compare two columns for equality and result in third dataframe

由 三世轮回 提交于 2020-05-12 05:04:12
问题 how to print the result in the separate dataframe after comparing it with two columns in different dataframes. consider two dataframes: df1 = pd.DataFrame({'col1':['audi','cars']}) df2 = pd.DataFrame({'col2':['audi','bike']}) print (df1) col1 0 audi 1 cars print (df2) col2 0 audi 1 bike now the result should be in a different dataframe. col1 col2 result 0 audi audi no change 1 cars bike changed 回答1: Use concat with numpy.where: df = pd.concat([df1, df2], axis=1) df['result'] = np.where(df[

MS SQL Server View not allowing CONCAT

由 非 Y 不嫁゛ 提交于 2020-04-07 08:00:06
问题 MS SQL Server 2014. I have a SQL statement that works fine: SELECT CONCAT ( CAST(T1.[F1] AS INTEGER), CAST(T1.[F2] AS INTEGER) ) AS F3 FROM mytable AS T1 If I then put this into a view, and try to run I receive the error: Operand data type int is invalid for concat operator F1 and F2 both contain decimals but I want them concatenating e.g.: F1 = 123.00000 F2 = 456.00000 Therefore F3 = 123456 Why does the view not allow this and is there a solution? 回答1: Don't use the visual designers. They

How to concat variable and string in bash script

由 谁都会走 提交于 2020-03-13 05:23:27
问题 How to concat variable and string in bash script ? val1 = Variable1 + "any string " eg : val1 = $i + "-i-*" where i = 24thMarch I want echo val1 : 24thMarch-i-* What is proper proper to get the solution ? 回答1: Strings are concatenated by default in the shell. value="$variable"text"$other_variable" It's generally considered good practice to wrap variable expansions in double quotes. You can also do this: value="${variable}text${other_variable}" The curly braces are useful when dealing with a

How to concat variable and string in bash script

由 强颜欢笑 提交于 2020-03-13 05:21:40
问题 How to concat variable and string in bash script ? val1 = Variable1 + "any string " eg : val1 = $i + "-i-*" where i = 24thMarch I want echo val1 : 24thMarch-i-* What is proper proper to get the solution ? 回答1: Strings are concatenated by default in the shell. value="$variable"text"$other_variable" It's generally considered good practice to wrap variable expansions in double quotes. You can also do this: value="${variable}text${other_variable}" The curly braces are useful when dealing with a

PostgreSQL数据库切割和组合字段函数

由 ⅰ亾dé卋堺 提交于 2020-03-12 17:07:13
Postgresql里面内置了很多的实用函数，下面介绍下组合和切割函数 环境：PostgreSQL 9.1.2 CENTOS 5.7 final 一.组合函数 1.concat a.语法介绍 concat(str "any" [, str "any" [, ...]]) Concatenate all but first arguments with separators. The first parameter is used as a separator. NULL arguments are ignored. b.实际例子: postgres=# create table t_kenyon(id int,name varchar(10),remark text); CREATE TABLE postgres=# insert into t_kenyon values(1,'test','kenyon'),(2,'just','china'),(3,'iam','lovingU'); INSERT 0 3 postgres=# insert into t_kenyon values(4,'test',null); INSERT 0 1 postgres=# insert into t_kenyon values(5,null,'adele'); INSERT 0 1

Create an immutable clone of concat_ws

由 会有一股神秘感。 提交于 2020-03-04 04:55:48
问题 This blog post shows an example of how to create a immutable_concat function in Pg: CREATE OR REPLACE FUNCTION immutable_concat(VARIADIC "any") RETURNS text AS 'text_concat' LANGUAGE internal IMMUTABLE I'd like to do the same with concat_ws and the corresponding text_concat_ws does exist, however, the following just crashes the process: CREATE OR REPLACE FUNCTION immutable_concat_ws(VARIADIC "any") RETURNS text AS 'text_concat_ws' LANGUAGE internal IMMUTABLE Update: The siguature of immutable

用grunt构建seajs项目遇到的各种坑

由 烂漫一生 提交于 2020-02-29 11:23:00
使用grunt构建seajs项目遇到的各种坑 [TOC] 使用grunt-cmd-transport转换为具名模块遇到的问题 1. 最新版本依赖不能完全提取 grunt-cmd-transport 最新版本0.5.1不能完全提取依赖，需要降级到0.4.1。 参考： https://github.com/spmjs/grunt-cmd-transport/issues/103 2. 转换后出新双反斜杠 同样需要降级到0.4.1才行。 参考： https://github.com/spmjs/grunt-cmd-transport/issues/96 http://blog.csdn.net/weizengxun/article/details/45153519 3. 会将深层次的依赖也提取到deps中 网上解决方法，不要配置 paths ，然后用 --force 强制执行。 但是如果所有require都用相对路径，也就是都以 . 开头，就不需要强制执行了。 transport 后所有依赖包括间接依赖都会提取到 deps 中。这样在 concat 的时候就不会出现模块重复或者漏掉模块的情况。 所以为了避免 concat 出现问题， require 一定要用相对路径， concat 设置 include 为 relative 参考： http://blog.csdn.net/kyfxbl

XSL combining values of siblings if values of an attribute is same

由 試著忘記壹切 提交于 2020-02-15 06:45:47
问题 This is how my XML looks like <?xml version="1.0"?> <Nodes> <NodeA NodeAattr="123"> <NodeB NodeBattr="456"></NodeB> <NodeC> <NodeD NodeDAttr="ValueD"> <NodeE Name="ValueABC"> "555" </NodeE > <NodeE Name="ValueABC"> "666" </NodeE> </NodeD> </NodeC> </NodeA> </Nodes> If the values of the Name attribute of NodeE are same, concatenate the values of NodeE. And my final output xml has to look like <NodeA NodeAattr="123"> <NodeB NodeBattr="456"></NodeB> <NodeC> <NodeD="ValueD"> <NodeE Name="ValueABC

XSL combining values of siblings if values of an attribute is same

由 微笑、不失礼 提交于 2020-02-15 06:40:22
问题 This is how my XML looks like <?xml version="1.0"?> <Nodes> <NodeA NodeAattr="123"> <NodeB NodeBattr="456"></NodeB> <NodeC> <NodeD NodeDAttr="ValueD"> <NodeE Name="ValueABC"> "555" </NodeE > <NodeE Name="ValueABC"> "666" </NodeE> </NodeD> </NodeC> </NodeA> </Nodes> If the values of the Name attribute of NodeE are same, concatenate the values of NodeE. And my final output xml has to look like <NodeA NodeAattr="123"> <NodeB NodeBattr="456"></NodeB> <NodeC> <NodeD="ValueD"> <NodeE Name="ValueABC
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