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Fetch frame count with ffmpeg
...nd footer (noprint_wrappers=1). There are shorter alternatives such as -of csv=p=0.
Also see
FFprobe Documentation
FFmpeg Wiki: FFprobe Tips
mediainfo
The well known mediainfo tool can output the number of frames:
mediainfo --Output="Video;%FrameCount%" input.avi
MP4Box
For MP4/M4V/M4...
Reading large text files with streams in C#
...ovement.
Related
I came across a case where streaming a large, generated CSV file to the Response stream from an ASP.Net MVC action was very slow. Adding a BufferedStream improved performance by 100x in this instance. For more see Unbuffered Output Very Slow
...
An efficient way to transpose a file in Bash
...
Worked well with a csv of size 2 GB.
– discipulus
Nov 8 '16 at 3:10
2
...
How can I access Google Sheet spreadsheets only with Javascript?
...lization API Query Language to query the data (which can return results in CSV, JSON, or HTML table format).
Forget jQuery. jQuery is only really valuable if you're traversing the DOM. Since GAS (Google Apps Scripting) doesn't use the DOM jQuery will add no value to your code. Stick to vanilla.
...
如何高效的学习掌握新技术 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...多个项目参考对照。以下就是部分我学习和参考过的项目列表：
emmenko/redux-react-router-async-example · GitHub 一个服务端交互的示例
quangbuule/redux-example · GitHub 一个和Immutable.js整合的示例
Rebuilding HipChat with React.js 一个和我要做项...
T-SQL split string
...x---------x
2. Converting to rows from a table which have an ID for each CSV row
SOURCE TABLE
x-----x--------------------------x
| Id | Value |
x-----x--------------------------x
| 1 | String1,String2,String3 |
| 2 | String4,String5,String6 |
x-----x---------...
MFC子窗口和父窗口（SetParent,SetOwner） - C/C++ - 清泛网 - 专注C/C++及内核技术
...更加灵活的管理窗口。举个例子：组合框（combobox)的下拉列表框（list box）可以超出组合框的父窗口的客户区，这样有利于显示，因此系统创建该list box的时候，是作为控制台窗口（desktop window）的子窗口，它的父窗口hWndParent是NU...
Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
...he same output is in compare_output$comparison_df which you can write to a CSV/TEXT fule using native R functions.
– Alex Joseph
Feb 13 '19 at 11:37
...
How do I get the different parts of a Flask request's url?
...s in Flask:
@app.errorhandler(404)
def not_found(e):
with open("./404.csv", "a") as f:
f.write(f'{datetime.datetime.now()},{request.__dict__}\n')
return send_file('static/images/Darknet-404-Page-Concept.png', mimetype='image/png')
...
Proper use of 'yield return'
... Another example that might be interesting is when reading rather large CSV files. You want to read each element but you also want to extract your dependency away. Yield returning an IEnumerable<> will allow you to return each row and process each row individually. No need to read a 10 Mb f...