Here is my output from ffmpeg -f alsa -i default -f v4l2 -s 640x480 -i
/dev/video0 -acodec flac -vcodec libx264 output.mkv
ffmpeg version 3.3.3-1ubuntu1 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 6.4.0 (Ubuntu 6.4.0-2ubuntu1) 20170724
configuration: --prefix=/usr --extra-version=1ubuntu1
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --enable-libflite --enable-libfontconfig
--enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
--enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt
--enable-libopus --enable-libpulse --enable-librubberband --enable-libshine
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid
--enable-libzmq --enable-libzvbi --enable-omx --enable-openal
--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
--enable-shared
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, alsa, from 'default':
Duration: N/A, start: 1502723857.171781, bitrate: 1536 kb/s
Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
[video4linux2,v4l2 @ 0x3ddca87320] Dequeued v4l2 buffer contains 32756
bytes, but 614400 were expected. Flags: 0x00012001.
Input #1, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, bitrate: 147456 kb/s
Stream #1:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480,
147456 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
Stream mapping:
Stream #1:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Stream #0:0 -> #0:1 (pcm_s16le (native) -> flac (native))
Press [q] to stop, [?] for help
[video4linux2,v4l2 @ 0x3ddca87320] Dequeued v4l2 buffer contains 32534
bytes, but 614400 were expected. Flags: 0x00012001.
/dev/video0: Invalid data found when processing input
[alsa @ 0x3ddca6a520] Thread message queue blocking; consider raising the
thread_queue_size option (current value: 8)
frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate=
-0.0kbframe= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77
bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size= 0kB
time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size=
0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size=
0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0
size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0
q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0
fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe=
0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate=
-0.0kbframe= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77
bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size= 0kB
time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size=
0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size=
0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0
size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0
q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0
fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbframe=
0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate=
-0.0kbframe= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77
bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size= 0kB
time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size=
0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0 size=
0kB time=-577014:32:22.77 bitrate= -0.0kbframe= 0 fps=0.0 q=0.0
size= 0kB time=-577014:32:22.77 bitrate= -0.0kbToo many packets
buffered for output stream 0:1.
Conversion failed!
Kai-Heng Feng <kai.heng.f...@canonical.com> schrieb am So., 13. Aug. 2017
um 17:25 Uhr:
> Okay, the error happens in avcodec_send_packet() or
> avcodec_receive_frame().
> Needs to find out what ffmpeg did here...
>
> ** Also affects: ffmpeg (Ubuntu)
> Importance: Undecided
> Status: New
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1708922
>
> Title:
> uvcvideo module does not work with Dell XPS 12 webcam
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/ffmpeg/+bug/1708922/+subscriptions
>
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https://bugs.launchpad.net/bugs/1708922
Title:
uvcvideo module does not work with Dell XPS 12 webcam
Status in ffmpeg package in Ubuntu:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
uvcvideo: Found UVC 1.00 device Integrated Webcam (0bda:5716) from
Dell XPS 12 laptop (9Q33 version) does not work properly for several
versions of the kernel now.
guvcview nor cheese both show the issue, so it's the uvcvideo driver.
Starting at 640x480 and higher resolutions, parts of lower half of
video flickers / don't show image.
Error messages:
V4L2_CORE: (jpeg decoder) error while decoding frame
V4L2_CORE: (jpeg decoder) Ignoring empty buffer
V4L2_CORE: Error - Couldn't decode frame
VLC seems to use another driver AND DOES NOT SHOW issue.
ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: cheese 3.24.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
Uname: Linux 4.11.0-10-generic x86_64
ApportVersion: 2.20.6-0ubuntu4
Architecture: amd64
CrashCounter: 1
CurrentDesktop: GNOME
Date: Sun Aug 6 12:15:28 2017
ExecutablePath: /usr/bin/cheese
InstallationDate: Installed on 2017-04-01 (127 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Beta amd64 (20170331)
MachineType: Dell Inc. XPS 12-9Q33
ProcCmdline: cheese
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
RelatedPackageVersions:
cheese 3.24.0-0ubuntu1
cheese-common 3.24.0-0ubuntu1
Signal: 8
SourcePackage: linux
StacktraceTop:
cheese_camera_play () from /usr/lib/x86_64-linux-gnu/libcheese.so.8
?? ()
g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: cheese crashed with SIGFPE in cheese_camera_play()
UpgradeStatus: Upgraded to artful on 2017-06-08 (59 days ago)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
dmi.bios.date: 03/03/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: XPS 12-9Q33
dmi.board.vendor: Dell Inc.
dmi.board.version: A08
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvrA08:bd03/03/2015:svnDellInc.:pnXPS12-9Q33:pvrA08:rvnDellInc.:rnXPS12-9Q33:rvrA08:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: XPS 12-9Q33
dmi.product.version: A08
dmi.sys.vendor: Dell Inc.
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