Piwigo.org

windracer · 2015-08-10 03:02:13

I moved my Piwigo installation to a new Linux server last month. Everything went smoothly but today I noticed for the first time that I can no longer generate thumbnails (posters) with VideoJS. The first problem was mediainfo and ffmpeg were missing, so I installed those.

Now, however, when trying to generate posters, VideoJS says: You ask me to do nothing, are you sure?

In my apache error.log, I see this:

Code:

ffmpeg version 2.5.8-0ubuntu0.15.04.1 Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Ubuntu 4.9.2-10ubuntu13)
  configuration: --prefix=/usr --extra-version=0ubuntu0.15.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --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-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libwavpack --enable-libwebp --enable-libxvid --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libvpx --enable-libx264 --enable-libsoxr --enable-gnutls --enable-openal --enable-libopencv --enable-librtmp --enable-libx265
  libavutil      54. 15.100 / 54. 15.100
  libavcodec     56. 13.100 / 56. 13.100
  libavformat    56. 15.102 / 56. 15.102
  libavdevice    56.  3.100 / 56.  3.100
  libavfilter     5.  2.103 /  5.  2.103
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  3.100 / 53.  3.100
[NULL @ 0x1dbc840] Unable to find a suitable output format for '/dev/null'
/dev/null: Invalid argument

What am I missing? The file is in .MP4 format and doing a regular 'ffmpeg -i <filename>' on the command-line of the server works.

Piwigo version: 2.7.4
PHP version: 5.6.4-4ubuntu6.2
MySQL version: 5.6.25-0ubuntu0.15.04.1

Last edited by windracer (2015-08-10 03:03:40)

windracer · 2015-08-10 16:00:04

Whoops ... nevermind! Please disregard.

Somehow I missed the fact that the "create poster" checkbox had been turned off (probably when Piwigo initially detected that ffmpeg was missing). Once I turned that back on, it worked again.

Javier · 2015-12-27 03:53:47

I have exactly the same problem. The error appears continuously in my logs.
The system is totally unable to detect ANY video.

root@osmc:/var/www/piwigo/plugins/piwigo-videojs# /usr/local/bin/ffmpeg 1>&2 /dev/null
ffmpeg version N-77493-ge70d56b Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree
libavutil 55. 11.100 / 55. 11.100
libavcodec 57. 20.100 / 57. 20.100
libavformat 57. 20.100 / 57. 20.100
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 22.100 / 6. 22.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
[NULL @ 0x253b180] Unable to find a suitable output format for '/dev/null'
/dev/null: Invalid argument

Any help will be appreciated!

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#1 2015-08-10 03:02:13

VideoJS: "/dev/null: invalid argument" from ffmpeg

Code:

#2 2015-08-10 16:00:04

Re: VideoJS: "/dev/null: invalid argument" from ffmpeg

#3 2015-12-27 03:53:47

Re: VideoJS: "/dev/null: invalid argument" from ffmpeg

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