[MC-41109] Minecraft crashes when streaming starts

What I expected to happen was...:
Twitch.tv streaming starts

What actually happened was...:
Instead, it briefly started, but Minecraft froze and stopped streaming

Steps to Reproduce:
1. Push F6 to start streaming

Here's a log from the launcher (version 1.3.4):

[10:05:21 INFO]: Client> [10:05:21] [Client thread/INFO]: Streaming at 832/496 at 1999 kbps to rtmp://live.twitch.tv/app/{stream_key}
[10:05:21 INFO]: Client> [10:05:21] [Client thread/INFO]: Broadcast to Twitch has started
[10:05:25 ERROR]: Game ended with bad state (exit code -1073741676)
[10:05:25 INFO]: Deleting C:\Users\davig\AppData\Roaming\.minecraft\versions\13w48b\13w48b-natives-7251152856102
[10:05:25 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[10:05:25 WARN]: Couldn't delete C:\Users\davig\AppData\Roaming\.minecraft\versions\13w48b\13w48b-natives-7251152856102 - scheduling for deletion upon exit