Streaming two kinds of audio at the same time with an iPhone. (music/video/podcast)

Whenever I try to listen to music and watch a YouTube video at the same time, the phone doesn't allow it. If I play a video, my music stops, and if I start playing music, the video stops. This is really annoying.....

It seems like the volume system on the iPhone doesn't allow simultaneous audio streams from different apps. This is making it impossible for me to enjoy my music while catching up on videos, and or listen to a podcast while browsing video's

Is there any workaround for this?
i'm not sure if this is on the app developers side or on apple it's audio system.