What is a PPC conversion?

# Tag: Conversion

## Video conversion – ffmpeg keyframes are not taken into account

I'm trying to combine a lot of videos with exactly the same timestamps. My work order enforces keyframes on each of these timestamps and then uses them `segment_frames`

do the job. The problem is that it doesn't work for every video and I'm not sure why.

`ffmpeg -i input.mp4 -c:v libx264 -force_key_frames timestampsArray -preset ultrafast -f segment -segment_frames keyframesArray -reset_timestamps 1 -map 0:0 output%03d.mp4`

Some of the exits are perfect, while others get out of hand. I've examined a few good and a few bad input videos to see if the settings have a pattern, but there doesn't seem to be a pattern.

There are 4 exits for a visual demonstration. The two lower tracks are accurate and have a correct division at the 2-second mark, but the two upper tracks differ.

Image of good and bad results

Let me know what else I can offer to help you help me. Fwiw, I don't need audio. Thank you in advance.

## opengl – GLM conversion from Euler angles to Quaternion and back does not apply

I am trying to convert the orientation of an OpenVR controller that I saved as `glm::vec3`

of Euler angles in a `glm::fquat`

and back, but I get wildly different results and the behavior in the game is just wrong *(difficult to explain, but the object's orientation behaves normally for a small angular range and then rotates in strange axes)*,

This is my conversion code:

```
// get `orientation` from OpenVR controller sensor data
const glm::vec3 eulerAnglesInDegrees{orientation(PITCH), orientation(YAW), orientation(ROLL)};
debugPrint(eulerAnglesInDegrees);
const glm::fquat quaternion{glm::radians(eulerAnglesInDegrees)};
const glm::vec3 result{glm::degrees(glm::eulerAngles(quaternion))};
debugPrint(result);
// `result` should represent the same orientation as `eulerAnglesInDegrees`
```

I would expect `eulerAnglesInDegrees`

and `result`

to be either the same or equivalent representations of the same orientation, but apparently that is not the case. Here are some example values that I have printed out:

```
39.3851 5.17816 3.29104
39.3851 5.17816 3.29104
32.7636 144.849 44.3845
-147.236 35.1512 -135.616
39.3851 5.17816 3.29104
39.3851 5.17816 3.29104
32.0103 137.415 45.1592
-147.99 42.5846 -134.841
```

As you can see above, the conversion is correct for some orientation areas, but completely different for others.

**What am I doing wrong?**

I've looked at existing questions and tried a few things, including trying out every possible rotation order listed here, conjugating the quaternion, and other random things like flipping pitch / yaw / roll. Nothing gave me the expected result.

**How can I convert Euler angles to quaternions and back that represent the original orientation? glm?**

Some more examples of discrepancies:

```
original: 4; 175; 26;
computed: -175; 4; -153;
difference: 179; 171; 179;
original: -6; 173; 32;
computed: 173; 6; -147;
difference: -179; 167; 179;
original: 9; 268; -46;
computed: -170; -88; 133;
difference: 179; 356; -179;
original: -27; -73; 266;
computed: -27; -73; -93;
difference: 0; 0; 359;
original: -33; 111; 205;
computed: 146; 68; 25;
difference: -179; 43; 180;
```

I tried to find a pattern to fix the finale `computed`

Results, but it doesn't appear that there is one that is easy to identify.

GIF + video of behavior:

Visual representation of my intuition / my current understanding:

- The picture above shows a ball and I am in the middle. If I aim the weapon at the green half of the bullet, the alignment is correct. If I aim the gun at the red half of the bullet, that's wrong – it seems like each axis is inverted, but I'm not 100% sure that it is.

## c ++ – GLM conversion of Euler angles to Quaternion and back does not apply

I am trying to convert the orientation of an OpenVR controller that I saved as `glm::vec3`

of Euler angles in a `glm::fquat`

and back, but I get wildly different results and the behavior in the game is just wrong *(difficult to explain, but the object's orientation behaves normally for a small angular range and then rotates in strange axes)*,

This is my conversion code:

```
const glm::vec3 eulerAnglesInDegrees{orientation(PITCH), orientation(YAW), orientation(ROLL)};
debugPrint(eulerAnglesInDegrees);
const glm::fquat quaternion{glm::radians(eulerAnglesInDegrees)};
debugPrint(result);
```

I would expect `eulerAnglesInDegrees`

and `result`

to be either the same or equivalent representations of the same orientation, but apparently that is not the case. Here are some example values that I have printed out:

```
39.3851 5.17816 3.29104
39.3851 5.17816 3.29104
32.7636 144.849 44.3845
-147.236 35.1512 -135.616
39.3851 5.17816 3.29104
39.3851 5.17816 3.29104
32.0103 137.415 45.1592
-147.99 42.5846 -134.841
```

As you can see above, the conversion is correct for some orientation areas, but completely different for others.

**What am I doing wrong?**

I've looked at existing questions and tried a few things, including trying out every possible rotation order listed here, conjugating the quaternion, and other random things like flipping pitch / yaw / roll. Nothing gave me the expected result.

**How can I convert Euler angles to quaternions and back that represent the original orientation? glm?**

## c ++ – conversion from the element pointer to the entire structure / class

Consider the following code:

`#include `
struct bar {
double a = 1.0;
int b = 2;
float c = 3.0;
};
void callbackFunction(int* i) {
auto myStruct = reinterpret_cast(i) - offsetof(bar, b);
std::cout << myStruct->a << std::endl;
std::cout << myStruct->b << std::endl;
std::cout << myStruct->c << std::endl;
//do stuff
}
int main() {
bar foo;
callbackFunction(&foo.b);
return 0;
}

I need to define a callback function and would like to use some additional information in this function. I have defined my own structure and passed a member's address to the function. In function, I want to "get" the whole structure through casting, but the pointers don't seem to match and I get wrong results. I think I'm doing something wrong when casting, but I'm not sure what?

## wp remote post – conversion of the code wp_remote_post

I'm trying to convert this PHP code to WordPress format wp_remote_post ().

Thoughts, ideas, that's NOT my strong point, lol.

```
setUrl('https://xxxx.yyyyy.zzzzz');
$request->setMethod(HTTP_Request2::METHOD_POST);
$request->setConfig(array(
'follow_redirects' => TRUE
));
$request->setHeader(array(
'x-api-key' => 'ppppppppppppppp',
'Content-Type' => 'application/json'
));
$request->setBody('{n "object_type": "Leaderboard",n "action": "list",n "pagination": {n "limit": 5,n "order": falsen },n "data": {n "username": "me@mysite.me"n }n}');
try {
$response = $request->send();
if ($response->getStatus() == 200) {
echo $response->getBody();
}
else {
echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' .
$response->getReasonPhrase();
}
}
catch(HTTP_Request2_Exception $e) {
echo 'Error: ' . $e->getMessage();
}
```

## What is the PPC conversion rate?

Hello friends,

What is the PPC conversion rate?

## What is a good conversion from YouTube to MP3 for a phone?

What is a good conversion from YouTube to MP3 for a phone?

## Conversion from Maxima (Mathematica) to Python

Did you know which script (program) converts the code from? **maxima** (mathematical formula processing software) **python**? does **maxima** have the ability to convert **Fortran**?

Since the formula processing software is a simple input for fractions, I use it a lot, but when I try to convert those fractions to manually **python** With **slashes**, it is withered (for me).

## The Google Finance feature returns the date, not the currency conversion

I am trying to calculate the USD: AUD conversion from M3 and display the result of the current exchange rate in the next cell, but only the date is resolved

I am trying to convert cell M3 to cell N3 in AUD

```
=M2*GOOGLEFINANCE("CURRENCY:USDAUD")
```

This formula worked in the cell above and converted the "live" rate, but if I change it for other cells, it will return a random date like 01/27/1900.

I have another part of the table that converts the currency on a specific date. However, this must be up-to-date and updated with the live prices with every check.

can someone help?