1076199 - The end of the video camera's "starting to record" sound is caught on your recorded video

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Gaia::Camera, defect)

Description

[Daniel Holbert [:dholbert]]

STR:
 1. Record a video.
 2. Listen back to your video.

ACTUAL RESULTS: The tail end of the "starting to record" notification-sound is actually caught on the video.  This makes for a jarring, awkward start to your video.

EXPECTED RESULTS: The video should start recording *after* the notification has finished. (so, maybe 50-100ms later [guessing])

Sample video: https://www.youtube.com/watch?v=Nlm9iHIt0yo
Note the "ping" at the beginning of the video.

(Ignore the rapid click-click-click noise after that -- that's unrelated, and is coming from the pipes shown in the video. I actually took the video to report that as a building maintenance issue, but then I noticed that the phone's "ding" was partially recorded as well. :) )

Comment 1

[Daniel Holbert [:dholbert]]

 Device: Flame
 OS Version: 2.1.0.0-prerelease
 Build Identifier: 20140930160205
 Git commit  info: 2014-09-30 20:59:29  08be48c7

Comment 2

[Daniel Holbert [:dholbert]]

(I'm up to date on the flame "aurora" channel for updates, up-to-date as of last night.)

Comment 3

[Mike Habicher [:mikeh] (high bugzilla latency)]

I can -just- hear this sound in the video in comment 0, and had to crank the volume all the way on my desktop to catch it. It's definitely the trailing end of a start-recording sound.

The next question is whether it's ours or the platform's.

Comment 4

[Mike Habicher [:mikeh] (high bugzilla latency)]

Confirmed on:
- gonk:  v184
- gecko: aurora:c4a4b04c617c
- gaia:  v2.1:778ebac47554e1c4b7e9a952d73e850f58123914

With the volume up all the way, in a quiet room, with a quiet recording, during playback you can -just- hear the very tail-end of the start-recording sound at the beginning of the recorded video.

The AOSP default is 700ms[1], unless overridden by the media profile in use[2][3]. The contents of my 'backup-flame' (kk) folder (among others) show startOffsetMs="300". It should be trivial to bump this up to e.g. ~400ms and retest.

1. http://androidxref.com/4.4.4_r1/xref/frameworks/av/media/libstagefright/MPEG4Writer.cpp#51
2. http://androidxref.com/4.4.4_r1/xref/frameworks/av/media/libmediaplayerservice/StagefrightRecorder.cpp#1551
3. http://androidxref.com/4.4.4_r1/xref/frameworks/av/media/libmedia/MediaProfiles.cpp#374

Comment 6

[herdir]

Same problem with the version 2.2.

Comment 7

[Parul Mathur [:pragmatic] - out of office - please ni? [:bajaj] instead]

Herdir, could you please provide the detailed build information for your phone? See comment #1 above. On your phone, go to Settings > Device Information > More Information.

Comment 8

[BMO Automation]

Firefox OS is not being worked on