TMPlayer is a free, open source, unofficial Telegram media player that plays the videos in your own Telegram chats on Android TV, Fire TV, Android phones, Windows, macOS and Linux, while they are still downloading.
RootEncoder for Android (rtmp-rtsp-stream-client-java) is a stream encoder to push video/audio to media servers using protocols RTMP, RTSP, SRT and UDP with all code written in Java/Kotlin