Issue 470717 in chromium: webcam not working

[chro...@googlecode.com]

Status: Unconfirmed
Owner: ----
Labels: Pri-2 Via-Wizard Type-Bug-Regression OS-Linux

New issue 470717 by duffwor...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like
Gecko) Chrome/41.0.2272.101 Safari/537.36

Steps to reproduce the problem:
1. go to webrtc site or any other site that will need access to the webcam
2. allow google chrome to use the webcam
3. And this is were the trouble begins

What is the expected behavior?
It should show me the view of my webcam

What went wrong?
The LED next to the webcam flashes once and goes out instead of staying on
and nothing happens. I just have a black image instead of the webcam view.

Did this work before? Yes I don't remember

Chrome version: 41.0.2272.101 Channel: stable
OS Version: 3.16.0-33-generic
Flash Version: Shockwave Flash 17.0 r0

No other comments, check those thread for more info:
https://productforums.google.com/forum/?utm_medium=email&utm_source=footer#!msg/chrome/CfNwddz9djU/C-GQ2bNZ5YUJ
and
https://productforums.google.com/forum/?utm_medium=email&utm_source=footer#!msg/chrome/Am3AQdPTQWA/-r-r5wOl15UJ

Attachments:
Screenshot from 2015-03-24 05:39:11.png 42.4 KB

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Updates:
Labels: TE-NeedsTriageFromMTV

Comment #1 on issue 470717 by rnimmaga...@chromium.org: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

@MTV: Team, could you please verify this issue on a Linux Laptop, since we
do not have a Linux Laptop & Web Cam to verify this issue.

[chro...@googlecode.com]

Comment #2 on issue 470717 by duffwor...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

It occured on linux ubuntu 14.10. My issue is about linux, I don't know for
other os.

[chro...@googlecode.com]

Comment #3 on issue 470717 by duffwor...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Can you please tell me when my issue will be considerate by the chromium or
Google's developers team?

[chro...@googlecode.com]

Comment #4 on issue 470717 by tuhinkar...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

It occurs on my Ubuntu 14.04.2 system as well. Having this issue since
Google Chrome 38.

[chro...@googlecode.com]

Comment #5 on issue 470717 by duffwor...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Update after updates, nothing changes. May someone please consider my case?

[chro...@googlecode.com]

Comment #6 on issue 470717 by firtek...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I have this issue for a long time. I forgot which chrome update broke it
but it might also be Google Chrome 38.

[chro...@googlecode.com]

Comment #7 on issue 470717 by dontai.c...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I'm using Ubuntu 14.04.2 LTS on a Lenovo w510 laptop. When I use Google
Chrome 42.0.2311.152-11 stable, Google+ Hangouts chat does not display my
integrated webcam, as in I get a black screen for my webcam view. When I
use Firefox 38+build3 the webcam works with Hangouts. Skype, Cheese and
GUVcview all use my webcam correctly, so I know that the webcam works. I
deleted the google-talkplugin 5.41.0.0-1 and then reinstalled it, but
nothing changed. I've not been able to see my webcam using Chrome for many
months, but before this I sometimes could use my webcam. Please help.

[chro...@googlecode.com]

Updates:
Cc: pbom...@chromium.org
Labels: -TE-NeedsTriageFromMTV Needs-Feedback

Comment #8 on issue 470717 by pbom...@chromium.org: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Unable to reproduce the issue on latest Chrome Stable i.e., 43.0.2357.65 on
Ubuntu 14.04Lts. Can you please update to latest build and let us know if
you still see the issue.

[chro...@googlecode.com]

Comment #9 on issue 470717 by tuhinkar...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I am on Ubuntu 14.04.2. Google Chrome 43 still has the issue.

[chro...@googlecode.com]

Comment #10 on issue 470717 by duffwor...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

@pbom...@chromium.org I still have the same issue. Google Chrome Version
43.0.2357.65 (64-bit) on Ubuntu 15.04.

[chro...@googlecode.com]

Comment #11 on issue 470717 by duffwor...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Still no solutions?

[chro...@googlecode.com]

Comment #13 on issue 470717 by Katyl...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Experiencing this issue on archlinux using google chrome, beta and stable,
and chromium. Firefox works fine. My webcam uses the uvcvideo module.
Noticed the issue a while ago. Unfortunately I didn't keep track of version
numbers. Happy to provide anything else that might be helpful to get this
sorted out.

[chro...@googlecode.com]

Comment #14 on issue 470717 by jusko...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Same issue - Ubuntu 14.04.2, Lenovo B570e.

System recognize my webcam, Skype as well. Chrome not - no webcam to choose.

[chro...@googlecode.com]

Comment #15 on issue 470717 by tuhinkar...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I have discovered some interesting information.

I installed Fedora 21 on my system. Installed Google Chrome and my webcam
didn't work. So this issue is not only occurring on Ubuntu. This is a
device specific issue. Webcam still works on Firefox, on both Ubuntu and
Fedora.

Here's what I think is happening... The module or library or method, Google
Chrome is using to access my webcam is not available on my system. My
system uses some different module or library for the webcam. And Chrome
doesn't know about it.

I have attached a file containing the output of lsusb -v. It has all the
information about my webcam.

Attachments:
microdia 18.3 KB

[chro...@googlecode.com]

Comment #17 on issue 470717 by joe.test...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Same on Gentoo. LD_PRELOAD helps with firefox, but not with chromium.

[chro...@googlecode.com]

Comment #18 on issue 470717 by waq...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Same problem here with uvcvideo on arch linux.

One thing though: If I keep reloading the page often enough, at some point
I get lucky and it starts working!
When it does work, it will also work in any other tabs opened afterwards.
Once I close all tabs using the camera, it reverts to its broken state.

The broken state looks like described originally.
First the red recording indicator shows up in the tab. A few seconds later,
the LED on the webcam flashes once, then the recording indicator turns off
and I see a black image where the camera feed should be.

This happens both in Chromium stable and Chrome dev channels, all is fine
in other programs like mplayer, Skype and Firefox.

[chro...@googlecode.com]

Comment #19 on issue 470717 by waq...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I just had an interesting development.

When using https://opentokrtc.com/ instead of my own webrtc-test-page, I
found out that their site connected to the webcam reliably and mine
required lots of reloads until I got lucky.
Turns out that everything works fine if I grab both audio and video instead
of just video, as I did before.

So this does not work:

var mediaOptions = { audio: false, video: true };
navigator.getUserMedia(mediaOptions,...)

whereas audio: true does work.
It works both when the webcam's mic is used and with another mic.

[chro...@googlecode.com]

Comment #21 on issue 470717 by anton85...@mail.ru: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I've had the same issue for more than a year now. I'm under Fedora 22 using
Google Chrome 47.0.2526.106 (64-bit).
Just like others it doesn't work on Chrome but works on Firefox.
I've tried using Opera/Vivaldi and it doesn't work either so I'm assuming
it's not only Chrome but what these browsers use.

[chro...@googlecode.com]

Comment #22 on issue 470717 by frederic...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Same issue here on Ubuntu 14.04 LTS (64 bits) with the latest Chrome and
Opera.
I want to use Sqwiggle which only works on Chrome or Opera so I'm in a
dead-end right now.

I also sent them a message about the problem as it might be a big issue for
them, preventing a big percentage of the developers to use their service.

[chro...@googlecode.com]

Comment #23 on issue 470717 by Konsol...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I've been facing the same issue since a year and it isn't resolved yet.
Chrome Version 47.0.2526.106 (64-bit)
Adobe Flash Player - Version: 20.0.0.286

[chro...@googlecode.com]

Comment #24 on issue 470717 by konklone: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

So I may be able to help reproduce the issue -- I have a USB webcam, and
https://appear.in (straight WebRTC) works fine in Chrome, but Google
Hangouts does not.

I can also verify that Google Hangouts works fine with Firefox, with this
same camera.

* USB Web Camera: Logitech HD Webcam C310
(http://www.amazon.com/gp/product/B003LVZO8S?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00)

* Chrome version: 47.0.2526.111 (64-bit)

* Flash version: 20.0.0.286 - Shockwave Flash 20.0 r0

* Linux version: Ubuntu 15.10

Is there a way that affected users can help the Chromium team triage this
issue? I'll mail a camera to the Google offices if I have to!

[chro...@googlecode.com]

Comment #25 on issue 470717 by attito...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I have the same problem with an old Trust webcam. By default it's not
recognized by Google Chrome. If I start the browser
LD_PRELOAD=/path/to/v4l2convert.so (this lib basically converts exotic
pixel formats like P207 to commonly used ones like RGB24), the webcam is
recognized but I get no image.

---
I did some tests with Google Chrome, Chromium and other software on
different OSs and architectures:

PCs and OSs used:
- Desktop PC 1 - Linux Mint 17.3 Cinnamon (x64)
- Desktop PC 2 - Ubuntu 15.10 (x64)
- Asus K55VM notebook (with built in webcam) - Ubuntu 15.10 (x64),
- Asus Eee PC 1015P netbook (with build in webcam) - Linux Mint 17.3
Cinnamon (i386)

Web cameras tested:
- Trust WB-1400T (http://www.trust.com/en/product/14382-webcam-wb-1400t)
- Asus K55VM built in webcam
- Asus Eee PC 1015P built in webcam

Web pages used for testing:
https://alexandre.alapetite.fr/doc-alex/html5-webcam/index.en.html
https://opentokrtc.com/

Browsers: (64bit versions on first 3 PCs, and 32bit versions on EeePC)
- Google Chrome 48.0.2564.82
- Chromium 47.0.2526.106
- Firefox 43.0.4

Results:
- in any of the browsers started without LD_PRELOAD, the build in cameras
are working, but the Trust webcam is not recognized (because of the
proprietary pixel format P207)
- if I start Google Chrome or Chromium (except the 32bit Chromium) with
LD_PRELOAD=/path/to/v4l2convert.so, both the build in and the Trust webcams
are recognized, but none of them works - actually seems that the site gets
access to the webcam, but then the image is immediately gone (see the
attached image and the JS code in the source of the site)
-- with the 32bit Chromium on the EeePC both the built in and the Trust
webcam works, but the 32bit Google Chrome produces the above behaviour too.
- Firefox works as expected both with and without
LD_PRELOAD=/path/to/v4l2convert.so (the Trust webcam works only if Firefox
is started with the v4l2convert library)
- note: each start was a clean start, I killed any browser processes before
the start commands

If pretty clear that the problem is in Google Chrome and has something to
do with the v4l2convert.so library. As the v4l2covert.so does it's job with
almost any other program (I tried Firefox, fswebcam, Cheese, Skype, VLC,
etc), I think we can assume that something goes wrong in Google Chrome.

I attached some fswebcam logs started with and without
LD_PRELOAD=/path/to/v4l2convert.so. The with and without logs are pretty
the same, except that v4l2convert adds READWRITE to the capabilities, and
adjusts the list available pixel formats (exotics are removed, and common
ones are added).

I looked in the source code of Chromium here, but found nothing that could
cause this issue:
https://chromium.googlesource.com/chromium/src/media/+/85162da92a65a25b006a3fdbadba2dd40ba317a7/capture/video/linux.
Maybe the problem is somewhere in the access management to the webcam.

Hope this is enough information to locate an fix this issue...

Attachments:
v4l2convert-bug.png 49.2 KB
fswebcam-asus-eeepc.txt 1.4 KB
fswebcam-asus-eeepc-v4l2convert.txt 1.7 KB
fswebcam-asus-k55vm.txt 1.5 KB
fswebcam-asus-k55vm-v4l2convert.txt 1.8 KB
fswebcam-trust.txt 1.0 KB
fswebcam-trust-v4l2convert.txt 1.6 KB

[chro...@googlecode.com]

Comment #26 on issue 470717 by konklone: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

So I think there may be separate issues being discussed here.

I *can* use my Logitech camera, described above, in Chrome on appear.in and
(just tested) on opentokrtc.com.

*And*, I just distinguished between old Google Hangouts (which my
organization's Google Apps account uses, at
https://plus.google.com/hangouts/_/[orgdomain]) and the new "BETA" Hangouts
at https://talkgadget.google.com/hangouts.

The camera works fine in new "BETA" hangouts, but *not* in the old Google
Apps hangouts my organization uses.

I hope this is helpful information. I think I'm having a different issue
than the ones others are reporting. It also looks like Google Hangouts'
newer product version has fixed it, but has not been rolled out to Google
Apps customers (or at least not me). Without visibility into Google's
source code, I don't know for sure, but I bet my bug is with the old Google
Hangouts plugin, and that the new Google Hangouts is "pure" WebRTC.

[chro...@googlecode.com]

Comment #28 on issue 470717 by kensc...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I just followed your exact steps. Without the preload the I get this...

Loading…
Get user media…
Got stream.

with a black box representing the future webcam video. After a few
seconds, this appears, even though I have allowed access to the camera...

Access to camera was denied!

With the preload, everything is exactly the same, except there is no delay
between "Got stream." and "Access to camera was denied!"

[chro...@googlecode.com]

Comment #31 on issue 470717 by nano.mls...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Same issue here, I'm running Parsix GNU/Linux 8.0 (Mumble) 64-bit, Cheese
work fine, Hangouts fails to detect internal camera, BUT if I plug an
external camera while hangouts is active, it detects the new camera and
works ok, internal camera remains disabled.

[chro...@googlecode.com]

Comment #32 on issue 470717 by attito...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Can we get more info about the hardware? You can use the "v4l2-ctl --all -d
/dev/video0" command to get more details about your camera.

You could try to start Chrome with
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l2convert.so (see #27 for
more details), maybe the internal camera will be detected so.

[chro...@googlecode.com]

Comment #33 on issue 470717 by mishraga...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I've attached the hardware details from my DELL INSPIRON laptop and the log
created by starting chrome as requested.

Attachments:
integrated_webcam_hw_details.txt 1.7 KB
Chrome_terminal_log.txt 2.5 KB

[chro...@googlecode.com]

Comment #34 on issue 470717 by mishraga...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Forgot to attach the screenshot from the suggested website. The camera
doesn't work though.

Attachments:
cnb4.png 136 KB

[chro...@googlecode.com]

Comment #35 on issue 470717 by attito...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Seems that your webcam uses 'YUYV' pixel format, and his is supported by
Chrome. Isn't your camera detected or just not working?

Did you tried the test site with the external camera / without
v4l2convert.so too?

[chro...@googlecode.com]

Comment #36 on issue 470717 by mishraga...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

The issue is only with chrome. Firefox is well able to detect my camera
alike other apps like skype and cheese. I don't have an external camera to
try with.

[chro...@googlecode.com]

Comment #37 on issue 470717 by attito...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I did some more tests with v4l2convert.so and some times the stream of my
built in camera gets successfully captured.

First of all, seems that Google Hangouts (https://hangouts.google.com/ ->
Video Call) does "some magic" and successfully captures the video stream of
the built in webcam. From that point the webcam starts working properly on
all the other sites. I tried this with my old webcam too, but I got no
image.

Secondly, I run the WebRTC Troubleshooter tests (https://test.webrtc.org/):
- with no v4l2convert.so + built in webcam - all (Camera) test are green
- with v4l2convert.so + built in webcam - only the "Check resolution
1280x720" and "Check supported resolutions" tests passes
- with v4l2convert.so + old external webcam - only the "Check supported
resolutions" test passes
- with v4l2convert.so + built in webcam + Hangouts running - all tests
passes (as in the first test)

I attached the exported test results.

Seems that the webcam's video stream sometimes for some reason gets
corrupted. It's seams related to v4l2convert.so, but probably just
accentuates an existing problem.

Shouldn't we change the issue's status to Confirmed?






Attachments:
webrtc_test_no_v4l2convert_built_in_webcam.txt 22.0 KB
webrtc_test_v4l2convert_built_in_webcam.txt 21.2 KB
webrtc_test_v4l2_old_external_webcam.txt 17.7 KB
webrtc_test_v4l2convert_built_in_webcam_with_hangouts.txt 22.0 KB

[chro...@googlecode.com]

Comment #38 on issue 470717 by mishraga...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Can you tell me how have you collected those logs? For me all the test
cases of webrtc fail but for supported resolutions one. And I've never
observed hangouts to be working 'sometimes' with the integrated webcam.

Indeed, the status should be changed to confirmed.

[chro...@googlecode.com]

Comment #39 on issue 470717 by attito...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

After you ran tests, click on the "bug" button left to START button, enter
a description and click DOWNLOAD REPORT.

[chro...@googlecode.com]

Comment #40 on issue 470717 by s...@wire.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I got the same issue (black screen on webRTC) with Chrome/48.0.2564.97 on
Debian Jessie 8.3. My Webcam is a Logitech Webcam C270 that supports YUYV
and MJPG.

When researching for this bug i found issue #501318 and tried running
chrome with --no-sandbox which seems to be a legitimate workaround b/c I
finally got a video.

Might this issue be actually a bug of the sandbox?

[chro...@googlecode.com]

Comment #41 on issue 470717 by mishraga...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I'm still facing issue even with the handle --no-sandbox. I've attached
logs from the test for my hardware.

Integrated webcam on kubuntu (3.16.0-59-generic kernel)
Chrome Version 48.0.2564.97 (64-bit)


Attachments:
chrome_no_sandbox.log 15.4 KB
webrtc_test_chrome_default_start.log 15.5 KB
webrtc_test_v4l2convert_built_in_webcam.log 20.9 KB

[chro...@googlecode.com]

Updates:
Cc: a...@chromium.org rnimmaga...@chromium.org

Comment #43 on issue 470717 by rnimmaga...@chromium.org: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Just to update: Webcam is working fine on Ubuntu Trusty (14.04) [Desktop]
for Google Chrome Stable Version - 48.0.2564.103

Screen-recording is attached.

URL Accessed - webrtc

Thank you.

Attachments:
470717.ogv 4.7 MB

[chro...@googlecode.com]

Comment #44 on issue 470717 by tuhinkar...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

I just updated to version 48.0.2564.103 and it still doesn't work.

[chro...@googlecode.com]

Comment #45 on issue 470717 by mishraga...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

The new version doesn't work for me as well. The difference I see with
respect to #43 is that my profile path is
/home/$USER$/.config/google-chrome/Default

Does that make a difference?

[chro...@googlecode.com]

Comment #46 on issue 470717 by attito...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

@rnimmaga...@chromium.org:
Yes, is working fine with some webcams. With others still doesn't.

I tested with an old webcam (see #25) which is not detected by default
(because of the proprietary pixel format). I started Google Chrome with
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4l/v4l2convert.so. This way the
webcam is detected (so v4l2convert.so is loaded), but not working.

What is strange, is that my built in webcam, which is working perfectly
when the browser is started normally, with LD_PRELOAD=.../v4l2convert.so is
detected but does NOT works.

I tested this on 4 different computers, with Google Chrome and Chromium,
both 32 and 64 bit versions. The only one WORKING as expected was the 32bit
Chromium, which (when started with LD_PRELOAD) works both with the built in
webcam and the old one.

Which is even stranger (see #37), is that the build in webcam starts
working in Hangouts (again with LD_PRELOAD=.../v4l2convert.so), and as long
Hangouts is open, the webcam works with other websites too. The old webcam
is not working Hangouts.

It's clear that something gets wrong in Google Chrome. It happens for me
only with v4l2convert.so, but the library works as expected with any other
program I tested, so it's likely not the cause of the problem. There are
high chances that my problem is the same as for other's.

Again, these webcams are working as expected with many other
applications/browsers, which uses the same v4l2 library (and v4l2convert.so
for conversion) as Google Chrome.

[chro...@googlecode.com]

Comment #47 on issue 470717 by mishraga...@gmail.com: webcam not working
https://code.google.com/p/chromium/issues/detail?id=470717

Even after providing so many inputs is this thread dead? It's distressing
to notice the status as 'unconfirmed'