How to turn on video recording problematically in android - android

Is there any way to turn on the camera and start recording the scene and stop it after programmatically?
I googled on this but could not get any helpful info. Please help.

Sometimes Developer guide is more time saving than looking for code snippets on the web.

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Flutter screen recording

Hi Im trying to record a screen because I don't find a way to add an overlay to the camera video save.
I tried many plugin flutter_screen_recording, screen_capture_event, device_screen_recorder and screen_recorder but I didn't find a way to make them work properly. I chosen screen recording but if you have a solution to add the overlay in the camera video i take it too.
Thanks.
EDIT: For more informations the plugin flutter_screen_recording work fine on ios but not on android
There is Package for Screen Recording in flutter called flutter_screen_recording
You can try this

Android: How to keep recording while switch between back and front camera?

Video is limited in 1 minute.
What I already try, I restart record after switch camera, so there are several video files, in the end, I append them one by one using mp4parser.
But in the final video, I get a up down video in the front camera part. I have no idea what's go wrong!
I have another thought is to record what I preview like record screen, but I have no idea how to implement it as First time camera player , like remove not needed UI.
If there is any advice would be great help. Thank your guys anyway
You can use jprofiler for performance monitoring and recording. I am using the same. Its amazing.

how to check if microphone is turned on or off

all I am working on an app,where I just want to check if microphone is on or off.
i.e when the microphone is recording audio,it should show on.when it is not it should show off.
How to check whether microphone is used by any background app
I tried this and also saw about AudioRecorder in android developer site.But I am not getting it right.Can anyone help me??Thanks in advance .
Edit:
can anyone suggest how to run it in background

Can we record screen video of android devices?

Is their any source code or sample project which allows to record video of the running screen of application.
I have to make an application which has ability to record video of the application screen in android devices.
I search about this, but haven't find anything.
I have developed it.
For that you have to make background service and programmatically capture screenshot on every second and after that combine all images and make video using FFMPEG.
I hope it will work for you.
Let me know if you need more help in same.

How to show real time filtered camera preview while recording videos?

I want to show filtered camera preview while recording a video using media recorder. To filter the preview i need frames normally which i can get that from onPreviewFrame() function but while recording video with media recorder, onPreviewFrame() function does not get called. So what i want to know , is there any other ways to get these frames for filtering and then show them after modification ? I checked some apps from Google Play for example, Videocam Illusion. Its showing preview with effects during recording videos. I want to do something like that but have no hint how to do so. So i will appreciate any help/hints/code/sample regarding the issue. Thanks.
I haven't done it myself, but searched for it not so long ago. There's an answer on StackOverflow to show modified buffer of PreviewFrame:
https://groups.google.com/forum/?fromgroups=#!topic/android-developers/yF6CmrIJzuo
And here, a google groups link on the same topic.
How can I manipulate the camera preview?
Hope this helps, I'm planning on an application that modifies the preview frames, but is not going to record anything.
Best Regars.

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