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How can I extract a good quality JPEG image from a video file with ffmpeg?
...ale: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 (because the d...
Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
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answered Mar 10 '11 at 19:33
Elliott HughesElliott Hughes
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How to get error information when HttpWebRequest.GetResponse() fails
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edited Aug 31 '11 at 19:04
answered Aug 31 '11 at 18:58
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Yes/No message box using QMessageBox
...on Qt 4 and 5, requires QT += widgets on Qt 5, and CONFIG += console on Win32 to see qDebug() output.
See the StandardButton enum to get a list of buttons you can use; the function returns the button that was clicked. You can set a default button with an extra argument (Qt "chooses a suitable defau...
git pull from master into the development branch
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answered Nov 20 '13 at 17:58
torektorek
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C++ map access discards qualifiers (const)
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std::map's operator [] is not declared as const, and cannot be due to its behavior:
T& o...
nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
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answered Dec 16 '12 at 23:23
Jap MulJap Mul
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DialogFragment setCancelable property not working
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answered May 10 '13 at 10:46
BlackbeltBlackbelt
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Sending a JSON to server and retrieving a JSON in return, without JQuery
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Hasan A Yousef
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answered Jun 28 '14 at 16:22
hex494D49hex4...
What's the difference between ContentControl and ContentPresenter?
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Robert Harvey
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answered Aug 17 '09 at 14:44
NirNir
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