When I recording a video, how can I record a new video with a custom rect in camera frame

[Miles087]

Hello, I want to record a custom place when I recording. How can I do with this?

For example, red rect is my recording frame. I want to record another video with green rect. What can I do?
I use OpenGlView with RtspCamera2

[pedroSG94]

Hello,

You have a filter that allow you to crop the video as you want but this affect to stream, record and preview:
https://github.com/pedroSG94/RootEncoder/blob/master/app/src/main/java/com/pedro/streamer/utils/FilterMenu.kt#L158

[Miles087]

Hello,

You have a filter that allow you to crop the video as you want but this affect to stream, record and preview: https://github.com/pedroSG94/RootEncoder/blob/master/app/src/main/java/com/pedro/streamer/utils/FilterMenu.kt#L158

Thank you very mush, I mean when I preview normal frame, and recording a normal video, at the same time record a new video with crop. Do you have any idea to resolve it?

[pedroSG94]

Hello,

By default the library no allow record 2 videos at the same time. You can modify the library to do it but this could be difficult.

I think this could work:

• Create a new GlStreamInterface and a new VideoEncoder (of course you need to handle with lifecycle of both classes)
• Link VideoEncoder with GlStreamInterface (You can check StreamBase class)
• Add a SurfaceManager to OpenGlView and link that SurfaceManager to the GlStreamInterface created (similar to https://github.com/pedroSG94/RootEncoder/blob/master/library/src/main/java/com/pedro/library/view/OpenGlView.java#L277)
• Render the new SurfaceManager in draw method like others SurfaceManager
• Create a new AndroidMediaMuxer class
• Record the video using video data from the new VideoEncoder and reuse current audio data (duplicate the ByteBuffer is a good idea to avoid problems)
• Add the filter to GlStreamInterface
• You also need to do all code related with release all when you don't need it anymore

This feels difficult, so maybe the best idea is find a library that allow you modify the video as you want and create a new video modified when you call stopRecord.

[Miles087]

Hello,

By default the library no allow record 2 videos at the same time. You can modify the library to do it but this could be difficult.

I think this could work:

• Create a new GlStreamInterface and a new VideoEncoder (of course you need to handle with lifecycle of both classes)
• Link VideoEncoder with GlStreamInterface (You can check StreamBase class)
• Add a SurfaceManager to OpenGlView and link that SurfaceManager to the GlStreamInterface created (similar to https://github.com/pedroSG94/RootEncoder/blob/master/library/src/main/java/com/pedro/library/view/OpenGlView.java#L277)
• Render the new SurfaceManager in draw method like others SurfaceManager
• Create a new AndroidMediaMuxer class
• Record the video using video data from the new VideoEncoder and reuse current audio data (duplicate the ByteBuffer is a good idea to avoid problems)
• Add the filter to GlStreamInterface
• You also need to do all code related with release all when you don't need it anymore

This feels difficult, so maybe the best idea is find a library that allow you modify the video as you want and create a new video modified when you call stopRecord.

Sorry for reply late, I use OpenCV clip and record frame at the same time. For now it seems working : D