Opened 4 years ago

Closed 17 months ago

#7440 closed defect (needs_more_info)

Black flickering

Reported by: Viktor Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: x11grab
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


Summary of the bug:
I m just casual user trying to screencast my laptop screen (with sound, irrelevant) on my Manjaro Lenovo ideapad 710S

How to reproduce:

ffmpeg -video_size 1920x1080 -framerate 35 -f x11grab -i :0.0 -f alsa -ac 2 -i pulse ~/Videos/screencast_$(date +%s).mp4 &> /dev/null & echo $! > /tmp/screencast_pid

ffmpeg info :
ffmpeg version n4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 8.2.0 (GCC)
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avresample --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvenc --enable-omx --enable-shared --enable-version3
  libavutil      56. 14.100 / 56. 14.100
  libavcodec     58. 18.100 / 58. 18.100
  libavformat    58. 12.100 / 58. 12.100
  libavdevice    58.  3.100 / 58.  3.100
  libavfilter     7. 16.100 /  7. 16.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  1.100 /  5.  1.100
  libswresample   3.  1.100 /  3.  1.100
  libpostproc    55.  1.100 / 55.  1.100

built on Lenovo ideapad 710S, Manjaro


Same thing happens with just screencasting terminals, browser, anything really...but i noticed there are moments when it happens really rarely, doesnt look like its related to LOAD on my system thou.

I m not really skilled this kind of stuff, so please ask for anything you need to help me, i ll answer instantly (on my mail at least).

Change History (2)

comment:1 by Carl Eugen Hoyos, 4 years ago

Component: ffmpegundetermined
Keywords: x11grab added; flickering screencast removed

Please test current FFmpeg git head and provide the command line that you tested together with the complete, uncut console output to make this a valid ticket.
Is the issue reproducible if you only encode video?

comment:2 by Elon Musk, 17 months ago

Resolution: needs_more_info
Status: newclosed
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