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How can I extract a good quality JPEG image from a video file with ffmpeg?
... the default is -qmin 2).
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This ...
What does each of the [y,n,q,a,d,/,K,j,J,g,e,?] stand for in context of git -p
...s staged.
– Alexander Bird
Oct 20 '14 at 21:39
I use -p for stashing, didn't know you could use this for add too! Just...
What are the differences between the BLOB and TEXT datatypes in MySQL?
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answered Jul 24 '12 at 5:45
DarceyDarcey
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Difference between 'python setup.py install' and 'pip install'
...ith Python as of Python 2.7.9 on the Python 2.x series, and as of Python 3.4.0 on the Python 3.x series, making it even easier to use.
So basically, use pip. It only offers improvements over using python setup.py install.
If you're using an older version of Python, can't upgrade, and don't have...
Is there a way to zoom the Visual Studio text editor with a keyboard shortcut?
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Michael Mrozek
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answered Jun 22 '10 at 19:54
BrandonBrand...
Running multiple commands in one line in shell
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824
You are using | (pipe) to direct the output of a command into another command. What you are look...
Reload the path in PowerShell
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answered Aug 6 '15 at 1:44
mpenmpen
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Which data type for latitude and longitude?
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144
You can use the data type point - combines (x,y) which can be your lat / long. Occupies 16 byte...
jQuery: fire click() before blur() event
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314
Solution 1
Listen to mousedown instead of click.
The mousedown and blur events occur one after...
In CMake, how can I test if the compiler is Clang?
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249
A reliable check is to use the CMAKE_<LANG>_COMPILER_ID variables. E.g., to check the C++...