LiTr | Lightweight hardware accelerated video/audio transcoder | Video Utils library
kandi X-RAY | LiTr Summary
kandi X-RAY | LiTr Summary
LiTr (pronounced "lai-tr") is a lightweight video/audio transformation tool which supports transcoding video and audio tracks with optional frame modification.
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Top functions reviewed by kandi - BETA
- Display the menu
- Returns a string representation of media codec severity level
- Prints the supported codec capabilities
- Returns the String identifying the given color format
- On create view
- Sets the sequence for the transformation events
- Sets the tracks for the source tracks
- Creates an empty video
- Creates a media format which contains the video format
- Helper method to set the appropriate action for this menu item
- Transcodes an audio file
- Configures EGL settings
- Creates and returns the transform view
- Initializes the preview surface
- Process the next track
- Initializes the view
- Invoked when the fragment is created
- Creates and initializes the square center view
- Creates the preview view
- Apply all vertices
- Starts a transformation
- Muxies media and transforms source media to target media
- Starts a transformation between two media configurations
- Initializes the texture reference
- Makes a square of the source media to cropped media
- Initializes the frame
LiTr Key Features
LiTr Examples and Code Snippets
Community Discussions
Trending Discussions on LiTr
QUESTION
I have to work out how many liters of concrete can fit into a park. Len park: 30.2m | wid of the park: 10m | liters per sq/m: 6.6. I have attempted this and am new to python and know how to calculate the total. (30.2 * 10 * 6.6 = total). But I'm struggling to print the result.
...ANSWER
Answered 2022-Mar-25 at 04:08"30.2" is a float since it has a decimal point, not an int.
sum is a builtin function in python, so avoid using it as a variable name.
Try it online! (note, since this is a website, the output is different than you running it normally)
QUESTION
I'm creating a faceted plot of each sampling point, and trying to show four variables - a bar (species abundance at each sampling point), a line for water depth at the sampling point, another line for river height (measured elsewhere), and symbols for treatment intervention.
My problem is I can't seem to get the legend to show all the variables. I've included colour in the aesthetics for the geom_point, so that shows up, but I can't get the geom_lines into the legend. How can I get all four geoms represented in the legend?
Also, I'd like a third y-axis, as currently the grey line (river height) isn't represented on the y-axis at all. I've researched this and don't think there is away of adding a third y-axis, but if I'm missing something would be grateful for advice on that too.
This is the code (now updated based on comments)
...ANSWER
Answered 2022-Feb-17 at 14:40You need to include colour or shape in the aesthetics, but as you’ve discovered R doesn’t always play ball.
There is more information on this here https://aosmith.rbind.io/2018/07/19/manual-legends-ggplot2/
I’ve had a go at editing your code. I suggest you subset the data before building the ggplot, for example like this:
QUESTION
I tried some things but I cant read the data. I'm a beginner in flutter and I have to do a project that it shows the data in firebase. Can you show a beginner project that it only shows the datas in direbase?
I tried this too but this code have some errors on await (how it's possible I copied this from flutter official site)
...ANSWER
Answered 2022-Feb-09 at 14:48Wherever you're calling the GetData method you need to await it...or if it is a widget which needs to display data after fetching it from firebase you can wrap it with a future builder.
I hope this solves your problem, if it still doesn't, post with the specific error you're getting.
QUESTION
Future GetData() async {
FirebaseDatabase database = FirebaseDatabase.instance;
DatabaseReference ref = FirebaseDatabase.instance.ref("litre");
// Get the data once
DatabaseEvent event = await ref.once();
// Print the data of the snapshot
print(event.snapshot.value);
return event.snapshot.value;
}
ANSWER
Answered 2022-Feb-09 at 08:19GetData is an async function, so using it in a Text() widget will throw an exception because it is not string.
You can use FutureBuilder to build the Text() widget.
Example:
QUESTION
Faced with such a problem. It is necessary to pair categories with subcategories genres from liters, I want to do this through a simple function without bicycles. At this link, the generated XML with genres, which needs to be parsed by substituting the id attribute as the parent to the child sections.
There is such an XML structure:
...ANSWER
Answered 2022-Feb-08 at 17:12The attributes are on a different Xpath axis. id is short for child::id and will fetch the element node on the child axis. For the attribute axis use attribute::id or the shortcut @id.
Additionally to fetch the attribute from the context node I would suggest using the DOM method. No need for Xpath in this case:
QUESTION
I have a short PySimpleGUI program to test FocusOut. Jason Yang provided the code which works exactly as I want it to. However, a new problem has surfaced and I am therefore posting it as a new question. In the code below, if one fails to enter and amount in say the 'FUELQUANT' field an error is raised and a popup generated. However, if you enter a value, say 13.5 I want it to reflect in the Inbox as 13.50. To do so I want to read the value in the field then format it to 2 decimal places and return it via .update to the Inbox. My problem is that as soon as I put in the formatting code line(s), then if there is no value in the Inbox (i.e when it should cause the popup to activate), I get an error: "could not convert string to float: ' ' " Is there a way around this? I have tried everything that I could find to try to solve the problem but nothing seems to work.
...ANSWER
Answered 2022-Jan-28 at 13:08It is about the programming logic.
Demo code for it
QUESTION
I am attaching an extract from a larger program using PySimpleGUI. I am using FocusOut to test whether anything has been entered in an Inputbox (or whether a date has been selected). Each test on its own works well giving a popup message and then returning focus to the empty element. A problem arises when a second and third etc element is added. Then, if you fail to enter something in the first element you get 2 or 3 successive popups before focus is returned to the first one. Obviously there is something missing which would make each element complete its event before the next event is triggered. Any help will be greatly appreciated.
...ANSWER
Answered 2022-Jan-27 at 13:47FocusIn, FocusOut
The FocusIn and FocusOut events are generated whenever the keyboard focus changes. A FocusOut event is sent to the old focus window, and a FocusIn event is sent to the new one. In addition, if the old and new focus windows do not share a common parent, “virtual crossing” focus events are sent to the intermediate windows in the hierarchy. Thus a FocusIn event indicates that the target window or one of its descendants has acquired the focus, and a FocusOut event indicates that the focus has been changed to a window outside the target window's hierarchy.
The keyboard focus may be changed explicitly by a call to focus, or implicitly by the window manager.
So the focus out event will be generated when you call sg.popup or sg.set_focus, then event will be generated again and again, that's why the popup window shown again and again.
Here's the short code to demo it, five inputs but only 2nd and 3rd one check it empty entry.
QUESTION
So a friend and I are building a simple little formula calculator for my website and we are running into a bit of an issue. I would like all the buttons on the webpage to run multiple times without needing to refresh the page. As it stands all the buttons work once but only the Fahrenheit and Celsius buttons work multiple times. I see absolutely no reason why those buttons work repeatedly but the others do not. Here is the code for the page.
...ANSWER
Answered 2022-Jan-20 at 02:48Your variables are the same name as your functionnames. So you can call those functions once but when it's executed the name of the function cease to exist because now there needs to be a variable with that name. The second time the button gets pushed and wants to call the function with that name it no longer exist because JS now only nows that variable (as that was the last thing with that name).
Try mixing different names or uppercase and lowercase, for example:
function percent() -> variable percentage
function GPM() -> variable gpm
function LPM() -> variable lpm
QUESTION
I'm currently working on adding localisation support for volumetric units in my app. For example I want to be able to change from fluid ounces to litres and back again. Basically I want to support all the volumetric units that HKUnit supports with .dietaryWater.
Apple does say that "You can request the value from a quantity object in any compatible units.", but are very unclear how one would do this. (link)
How can I do conversations between units without writing the math myself?
...ANSWER
Answered 2022-Jan-17 at 16:56Foundation includes a Measurement structure that allows for a wide variety of unit conversions. For example, to convert from fluid ounces to liters:
QUESTION
I have the following dataframe
...ANSWER
Answered 2021-Dec-21 at 00:34IIUC, is it just:
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