[Nexus 6 Q&A, Help & Troubleshooting] xNotta:
I used [Root]alogcat to save my logcat and attached it here.

What I did: Opened the stock camera (already in video mode) pressed record, waited 1minute 1 second, stopped, saved logcat.

I tried it again using Android Device Monitor from the sdk and filtered by level: warn and the word camera.

I found this but no idea how to make sense of it.

01-16 20:59:18.326: W/Camera2-Parameters(748): initialize: Camera 0: Unknown preview format: 24
01-16 20:59:18.326: W/Camera2-Parameters(748): initialize: Camera 0: Unknown preview format: 25
01-16 20:59:21.258: W/View(5520): requestLayout() improperly called by com.android.camera.widget.FilmstripView{6b9ef5f V.ED..... ......ID 0,0-2392,1440 #7f0e0023 app:id/filmstrip_view} during layout: running second layout pass
01-16 20:59:23.050: E/mm-camera-intf(748): mm_camera_poll_thread_del_poll_fd: invalid handler 84992 (0)
01-16 20:59:23.051: E/mm-camera-img(764): faceproc_save_album: cannot open file name: /data/camera/fdAlbum
01-16 20:59:23.119: E/mm-camera-intf(748): mm_camera_poll_thread_del_poll_fd: invalid handler 85504 (0)
01-16 20:59:23.154: E/QCamera3Channel(748): virtual qcamera::QCamera3Channel::~QCamera3Channel(): deleting channel 84737
01-16 20:59:23.154: E/QCamera3Channel(748): virtual int32_t qcamera::QCamera3PicChannel::stop(): Attempt to stop inactive channel
01-16 20:59:23.161: E/QCamera3Channel(748): virtual qcamera::QCamera3Channel::~QCamera3Channel(): deleting channel 85250
01-16 20:59:23.161: E/QCamera3Channel(748): virtual qcamera::QCamera3Channel::~QCamera3Channel(): deleting channel 84224
01-16 21:00:25.440: E/mm-camera-intf(748): mm_camera_poll_thread_del_poll_fd: invalid handler 86528 (0)
01-16 21:00:25.442: E/mm-camera-img(764): faceproc_save_album: cannot open file name: /data/camera/fdAlbum
01-16 21:00:25.445: E/mm-camera-intf(748): mm_camera_poll_thread_del_poll_fd: invalid handler 87552 (0)
01-16 21:00:25.492: E/mm-camera-intf(748): mm_camera_poll_thread_del_poll_fd: invalid handler 87040 (0)
01-16 21:00:25.509: E/QCamera3Channel(748): virtual qcamera::QCamera3Channel::~QCamera3Channel(): deleting channel 86273
01-16 21:00:25.510: E/QCamera3Channel(748): virtual int32_t qcamera::QCamera3PicChannel::stop(): Attempt to stop inactive channel
01-16 21:00:25.513: E/QCamera3Channel(748): virtual qcamera::QCamera3Channel::~QCamera3Channel(): deleting channel 87299
01-16 21:00:25.517: E/QCamera3Channel(748): virtual qcamera::QCamera3Channel::~QCamera3Channel(): deleting channel 86786
01-16 21:00:25.517: E/QCamera3Channel(748): virtual qcamera::QCamera3Channel::~QCamera3Channel(): deleting channel 85760
01-16 21:00:25.530: E/BufferItemConsumer(756): [StageFright-CameraSource] Failed to release buffer: Unknown error -1 (1)
01-16 21:00:25.531: E/BufferItemConsumer(756): [StageFright-CameraSource] Failed to release buffer: Unknown error -1 (1)
01-16 21:00:25.531: E/BufferItemConsumer(756): [StageFright-CameraSource] Failed to release buffer: Unknown error -1 (1)
01-16 21:00:35.732: W/View(5520): requestLayout() improperly called by com.android.camera.widget.FilmstripView{6b9ef5f V.ED..... ......ID 0,0-1440,2451 #7f0e0023 app:id/filmstrip_view} during layout: running second layout pass