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Fetch frame count with ffmpeg
Does anyone know how to fetch the number of total frames from a video file using ffmpeg? The render output of ffmpeg shows the current frame and I need the frame count to calculate the progress in percent.
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Dual emission of constructor symbols
Today, I discovered a rather interesting thing about either g++ or nm ...constructor definitions appear to have two entries in libraries.
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How to concatenate two IEnumerable into a new IEnumerable?
I have two instances of IEnumerable<T> (with the same T ). I want a new instance of IEnumerable<T> which is the concatenation of both.
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C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
I'm doing the mvcmusicstore practice tutorial. I noticed something when creating the scaffold for the album manager (add delete edit).
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Fast way to get image dimensions (not filesize)
I'm looking for a fast way to get the height and width of an image in pixels. It should handle at least JPG, PNG and TIFF, but the more the better. I emphasize fast because my images are quite big (up to 250 MB) and it takes soooo long to get the size with ImageMagick's identify because it obv...
Rotating a two-dimensional array in Python
In a program I'm writing the need to rotate a two-dimensional array came up. Searching for the optimal solution I found this impressive one-liner that does the job:
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Validate uniqueness of multiple columns
Is there a rails-way way to validate that an actual record is unique and not just a column? For example, a friendship model / table should not be able to have multiple identical records like:
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What's the best way to check if a file exists in C?
Is there a better way than simply trying to open the file?
9 Answers
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How to remove a key from Hash and get the remaining hash in Ruby/Rails?
To add a new pair to Hash I do:
14 Answers
14
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creating a random number using MYSQL
I would like to know is there a way to select randomly generated number between 100 and 500 along with a select query.
6 A...