How to retrieve streams from Android camera？

General Discussion
1

I want to create rtsp server in Android device.

Now I can retrieve streams from MP4 that stored in device: /storage/emulated/0/Download/01.mp4.
And I can perform streaming on another Android device with VLC.

Can someone recommend how to retrieve streams from Android camera instead of mp4 ?
Which src element could be used or how to build pipeline?

kind regards
Nancy

2

I guess you want to stream video from one android device to another one.
two things you need to do:

  1. make a RTSP server
  2. create a RTSP pipeline to record, encode and send out video.

I guess VLC receives RTSP streaming(decoding) only.

3

Thank you for your answer.

Do you know which source element needs to be used to build the pipeline?
Is it v4l2src?
When I used v4l2src to build a pipeline, I received this error:
gst_parse_element_make no element “v4l2src”

Do you know how to add v4l2src on Android?

BRs，
Nancy

4

The android camera source is called ahcsrc.

You likely will not have direct access to any v4l2 API on android unless you are running a rooted device.

5

Thank you.

Can you give me an example of pipeline using ahcsrc?
I cannot obtain related information using gst-inspect-1.0 on Windows.

BRs,
Nancy

6

You use it like any other source element: ahcsrc ! ...

ahcsrc is an android-specific element and will not be available outside of Android. You will not find the element available on Windows, macOS, iOS, or Linux.

7

Thank you.

Do you know how to obtain detailed information about ahcsrc?
For example, Caps and Properties.

BRs,
Nancy