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Fastest way to extract frames using ffmpeg?
...nput.mp4 -frames:v 1 period_down_$i.bmp ; done
0m4.689s
This is about 20 times faster. We use fast seeking to go to the desired time index and extract a frame, then call ffmpeg several times for every time index. Note that -accurate_seek is the default
, and make sure you add -ss before the inp...
ctypes - Beginner
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edited Jun 20 at 9:12
Community♦
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answered Feb 22 '11 at 18:33
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What does “#define _GNU_SOURCE” imply?
...OURCE, but you should avoid defining it and instead define _POSIX_C_SOURCE=200809L or _XOPEN_SOURCE=700 when possible to ensure that your programs are portable.
In particular, the things from _GNU_SOURCE that you should never use are #2 and #4 above.
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What is Android keystore file, and what is it used for?
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Alexander LucasAlexander Lucas
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What are the risks of running 'sudo pip'?
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answered Mar 19 '14 at 20:17
Piotr DobrogostPiotr Dobrogost
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How do I specify the platform for MSBuild?
... Julien HoarauJulien Hoarau
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How to create a UIView bounce animation?
...here! :) Thanks
– user3127576
Feb 20 '14 at 0:41
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A MAGNIFICENT tutorial BUT you'd just use on...
Footnotes for tables in LaTeX
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texblog.org/2012/02/03/using-footnote-in-a-table seems to me a nice alternative
– Pio
Apr 28 '13 at 20:45
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Customize UITableView header section
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edited Jul 29 '13 at 20:06
Richard Burton
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Splitting a list into N parts of approximately equal length
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– LookAheadAtYourTypes
Nov 4 '17 at 14:20
Beautiful! Also, n can be made to work as batch_size by swapping k and n in th...