Two questions

[neilyoung]

I was using the RTMP part of the kit in order to have screen recording and RTMP push. Generally it works, but I have two issues.

1. the default trim scale just transfers a part of the captured screen. letterbox works great in portrait mode, but fails if the phone rotates. The rotation is captured, but after that the screen transported is displayed rotated by 90deg. What scaling would I have to apply in order to achieve landscape?

2. If there is no movement the capturer does not produce frames. This makes the Mediamtx mediaserver decide to run into an idle timeout. Anything I can do here to keep at least a minimal transmission up?

[noho501]

2 => I think you should use videoSettings.bitRateMode = .constant.

[neilyoung]

@noho501 Thanks for the super fast answer. Will give it a try.

The other issue: Is there a special landscape scaling? I could imagine to force my iOS app into landscape mode then, if that would be supported.

[noho501]

I don’t use it for screen broadcasting, but I noticed that HaishinKit includes a class called VideoRotator — you could try using that. #1452

[neilyoung]

@noho501 thanks a lot

[yury]

2 => I think you should use videoSettings.bitRateMode = .constant.

No, bitRateMode will not fix that. The problem is that ReplayKit doesn't get new frames. (Especially on drawing apps, or other apps with static content). So to fix that, you have to run timer and if you don't get any new frame at least at 20 fps you should submit previous sample buffer again.

[neilyoung]

Interesting. Thanks for the hint