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How can I extract a good quality JPEG image from a video file with ffmpeg?
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Use -qscale:v (or the alias -q:v) as an output option.
Normal range for JPEG is 2-31 with 31 being the worst quality.
The scale is linear with double the qscale being roughly half the bitrate.
Recommend trying values of 2-5.
You can use a value of 1 but you must add the -qmin 1 output option ...
What does each of the [y,n,q,a,d,/,K,j,J,g,e,?] stand for in context of git -p
When using -p mode of git add -p or git stash -p what does each of the letters stand for?
2 Answers
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Prevent wrapping of span or div
I'd like to put a group of div elements of fixed width into a container and have the horizontal scroll bar appeared. The div / span elements should appear in a line, left to right in the order they appear in the HTML (essentially unwrapped).
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Django: How to manage development and production settings?
...g a basic app. Now at the deployment stage it has become clear I have need for both a local settings and production settings.
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How do you merge two Git repositories?
Consider the following scenario:
23 Answers
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Why must a nonlinear activation function be used in a backpropagation neural network? [closed]
...ing some things on neural networks and I understand the general principle of a single layer neural network. I understand the need for aditional layers, but why are nonlinear activation functions used?
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git pull keeping local changes
How can I safely update (pull) a git project, keeping specific files untouched, even if there's upstream changes?
6 Answers...
How to put Google Maps V2 on a Fragment using ViewPager
... a tab layout same in Play Store. I got to display the tab layout using a fragments and viewpager from androidhive. However, I can't implement google maps v2 on it. I searched the internet for hours already, but I can't find a tutorial on how to do it. Can some one please show me how?
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mongodb count num of distinct values per field/key
Is there a query for calculating how many distinct values a field contains in DB.
5 Answers
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Getting and removing the first character of a string
I would like to do some 2-dimensional walks using strings of characters by assigning different values to each character. I was planning to 'pop' the first character of a string, use it, and repeat for the rest of the string.
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