ExoPlayer: Getting a 403 response code error from exoplayer

Issue description

When playing an http mp4 stream in my activity I get a 403 response code from exoplayer. When I plug the same url in the demo app it plays immediately. I have checked my code against the demo’s player activity and I can’t see any difference or missing code that would result in me getting the 403 and the demo app working. Can someone with better trained eyes check it out for me and point me in the right direction?

Reproduction steps

Pass url to custom exoplayer player activity. results in 403 response code. Demo app plays stream fine.

Link to test content

email sent to dev.exoplayer@gmail.com

Version of ExoPlayer being used

2.5.4

Device(s) and version(s) of Android being used

Pixel C 7.1.1

A full bug report captured from the device

E/EventLogger: internalError [3.76, loadError]
                                                                          com.google.android.exoplayer2.upstream.HttpDataSource$InvalidResponseCodeException: Response code: 403
                                                                              at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:211)
                                                                              at com.google.android.exoplayer2.upstream.DefaultDataSource.open(DefaultDataSource.java:137)
                                                                              at com.google.android.exoplayer2.source.ExtractorMediaPeriod$ExtractingLoadable.load(ExtractorMediaPeriod.java:692)
                                                                              at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:315)
                                                                              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
                                                                              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
                                                                              at java.lang.Thread.run(Thread.java:761)

E/EventLogger: playerFailed [3.78]
                                                                          com.google.android.exoplayer2.ExoPlaybackException
                                                                              at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:399)
                                                                              at android.os.Handler.dispatchMessage(Handler.java:98)
                                                                              at android.os.Looper.loop(Looper.java:154)
                                                                              at android.os.HandlerThread.run(HandlerThread.java:61)
                                                                           Caused by: com.google.android.exoplayer2.upstream.HttpDataSource$InvalidResponseCodeException: Response code: 403
                                                                              at com.google.android.exoplayer2.upstream.DefaultHttpDataSource.open(DefaultHttpDataSource.java:211)
                                                                              at com.google.android.exoplayer2.upstream.DefaultDataSource.open(DefaultDataSource.java:137)
                                                                              at com.google.android.exoplayer2.source.ExtractorMediaPeriod$ExtractingLoadable.load(ExtractorMediaPeriod.java:692)
                                                                              at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:315)
                                                                              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
                                                                              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
                                                                              at java.lang.Thread.run(Thread.java:761)```