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I'm trying to run a LAMMPS script in a Colab environment. However, whenever I try to use the fix command with arguments from the RIGID package the console gives me the same error.

I tested different installation and build methods, such as through apt repository and CMAKE:

Method 1

i'm trying to write a shell script to analyse some videos by using the first frame of each second of video as a basis. i'm using ffmpeg to extract the frames. i thought i'd hit gold when this thread came up in my searches, but it doesn't handle the deinterlacing.

i'm using a time-based approach that works well for various formats as long as the video is progressive. it doesn't work so well for interlaced video (only the first field is output in that case, creating a half-height image). i've tried various combinations of deinterlacing (yadif/bwdif) with select but the filter chains i create either cause errors or still return a half-sized image.

here is my call w/a filter that works correctly for progressive video source :
ffmpeg -i $infile -vf "select='if(eq(n\,0),1,floor(t)-floor(prev_selected_t))" -vsync 0 $outfile

the following still return only half-height images for interlaced source :
... -vf "bwdif=0,select='if(eq(n\,0),1,floor(t)-floor(prev_selected_t))'"

... -vf "bwdif=0,select='between(mod(n\,$ips)\,1\,2)'" -- $ips is images per second

... -vf "select='between(mod(n\,$ips)\,1\,2)',bwdif=0"

i've also tried various permutations of the above w/explicit frame reference (-r, -vframes, ...), still no joy.

can someone help me with the syntax ?

--EDIT--
here is the complete output of running the command with the first filter :

I want to programmatically detect whenever someone sends Bitcoin to some address. This happens on a local testnet which I start using this docker-compose.yml file.

Once the local testnet runs, I create a new address using

I'm new to esp-idf developement and I want to build a static library for esp32. I've read the espressif documentation (available here : Programming Guide) but I can't manage to create a proper .a file.

The idea is to develop a new library of wrapper and functions which include functions from esp-dsp library. I've add the esp-dsp component to my project and created my own component: my_component.

There is my project structure right now:

I am trying to build Hello World example of Mediapipe in C++. These are my exports in .bash_profile:

I run the following code, which show that there are no openssl repo find in brew.

My Mac is macOS Big Sur 11.3.1

I know of a couple of reasons why the initial platform check during cmake fails, but can't figure it out in my case, mostly because cmake seems to delete directories it is using for the check.

As an example, I try to compile OpenCV:

I'm trying to use the PortAudio package in Julia on a Raspberry Pi Zero W running Raspberry Pi OS like so:

In running an example from the guile handbook I stumbled upon an error while running foreign-library-function. It fails and prints a backtrace stating dlopen failed, because of an invalid elf format of the library. But the library is both present and working in other contexts.

The details to reproduce the issue:

test.scm (taken straight from the manual at https://www.gnu.org/software/guile/manual/guile.html#Foreign-Functions)