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  • Librairies et logiciels spécifiques aux médias

    10 décembre 2010, par

    Pour un fonctionnement correct et optimal, plusieurs choses sont à prendre en considération.
    Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel ; FFMpeg avec le maximum de décodeurs et (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Déploiements possibles

    31 janvier 2010, par

    Deux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
    L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
    Version mono serveur
    La version mono serveur consiste à n’utiliser qu’une (...)

Sur d’autres sites (5191)

  • Read a Bytes image from Amazon Kinesis output in python

    14 février 2020, par Varun_Rathinam

    I used imageio.get_reader(BytesIO(a),  'ffmpeg') to load a bytes image and save it as normal image.

    But the below error throws when I read the image using imageio.get_reader(BytesIO(a),  'ffmpeg')

    Traceback (most recent call last):
    
  File "<stdin>", line 1, in <module>
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/core/functions.py", line 186, in get_reader
    
    return format.get_reader(request)
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/core/format.py", line 164, in get_reader
    
    return self.Reader(self, request)
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/core/format.py", line 214, in __init__
    
    self._open(**self.request.kwargs.copy())
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/plugins/ffmpeg.py", line 323, in _open
    
    self._initialize()
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio/plugins/ffmpeg.py", line 466, in _initialize
    
    self._meta.update(self._read_gen.__next__())
    
  File "/home/tango/anaconda3/lib/python3.6/site-packages/imageio_ffmpeg/_io.py", line 150, in read_frames
    
    raise IOError(fmt.format(err2))
    
OSError: Could not load meta information
    
=== stderr ===
    

    
ffmpeg version 4.2 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 7.3.0 (crosstool-NG 1.23.0.449-a04d0)
    
  configuration: --prefix=/home/tango/anaconda3 --cc=/home/conda/feedstock_root/build_artifacts/ffmpeg_1566210161358/_build_env/bin/x86_64-conda_cos6-linux-gnu-cc --disable-doc --disable-openssl --enable-avresample --enable-gnutls --enable-gpl --enable-hardcoded-tables --enable-libfreetype --enable-libopenh264 --enable-libx264 --enable-pic --enable-pthreads --enable-shared --enable-static --enable-version3 --enable-zlib --enable-libmp3lame
    
  libavutil      56. 31.100 / 56. 31.100
    
  libavcodec     58. 54.100 / 58. 54.100
    
  libavformat    58. 29.100 / 58. 29.100
    
  libavdevice    58.  8.100 / 58.  8.100
    
  libavfilter     7. 57.100 /  7. 57.100
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  5.100 /  5.  5.100
    
  libswresample   3.  5.100 /  3.  5.100
    
  libpostproc    55.  5.100 / 55.  5.100
    
[matroska,webm @ 0x5619b9da3cc0] File ended prematurely
    
[matroska,webm @ 0x5619b9da3cc0] Could not find codec parameters for stream 0 (Video: h264, none, 1280x720): unspecified pixel format
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, matroska,webm, from '/tmp/imageio_zm6hhpgr':
    
  Metadata:
    
    title           : Kinesis Video SDK
    
    encoder         : Kinesis Video SDK 1.0.0
    
    AWS_KINESISVIDEO_FRAGMENT_NUMBER: 91343852333183888465720004820715065721442989478
    
    AWS_KINESISVIDEO_SERVER_TIMESTAMP: 1580791384.096
    
    AWS_KINESISVIDEO_PRODUCER_TIMESTAMP: 1580791377.843
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0(eng): Video: h264, none, 1280x720, SAR 1:1 DAR 16:9, 1k tbr, 1k tbn, 2k tbc (default)
    
    Metadata:
    
      title           : kinesis_video
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> rawvideo (native))
    
Press [q] to stop, [?] for help
    
Cannot determine format of input stream 0:0 after EOF
    
Error marking filters as finished
    
Conversion failed!
    
</module></stdin>

    The above approach to read a MKV bytes file was done based on this thread

    Or is there is any approach to parse and read the MKV bytes file.

  • Invalid image height when converting a specific (seemingly valid) GIF to an mp4

    3 février 2020, par joe

    I’ve come across a weird GIF file on the internet that ffmpeg doesn’t seem to like. Try running the following commands :

    curl http://images6.fanpop.com/image/photos/34300000/Klaus-The-Originals-klaus-34349255-120-113.gif > input.gif
    
ffmpeg -y -i input.gif -movflags faststart -pix_fmt yuv420p -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" output.mp4

    I get the following output with ffmpeg version 3.4.6 and 4.1.3 :

    ffmpeg version 4.1.3-0ubuntu1 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 8 (Ubuntu 8.3.0-6ubuntu1)
    
  configuration: --prefix=/usr --extra-version=0ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
    
  libavutil      56. 22.100 / 56. 22.100
    
  libavcodec     58. 35.100 / 58. 35.100
    
  libavformat    58. 20.100 / 58. 20.100
    
  libavdevice    58.  5.100 / 58.  5.100
    
  libavfilter     7. 40.101 /  7. 40.101
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  3.100 /  5.  3.100
    
  libswresample   3.  3.100 /  3.  3.100
    
  libpostproc    55.  3.100 / 55.  3.100
    
Input #0, gif, from 'a.gif':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: gif, bgra, 120x113, 5 fps, 5 tbr, 100 tbn, 100 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (gif (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
[libx264 @ 0x5613f5420c80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 0x5613f5420c80] profile High, level 1.0
    
[libx264 @ 0x5613f5420c80] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'o.mp4':
    
  Metadata:
    
    encoder         : Lavf58.20.100
    
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 120x112, q=-1--1, 5 fps, 10240 tbn, 5 tbc
    
    Metadata:
    
      encoder         : Lavc58.35.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[gif @ 0x5613f540edc0] Invalid image height.
    
Error while decoding stream #0:0: Invalid data found when processing input
    
[mp4 @ 0x5613f541f380] Starting second pass: moving the moov atom to the beginning of the file
    
frame=    1 fps=0.0 q=23.0 Lsize=       3kB time=00:00:00.00 bitrate=253795.9kbits/s speed=0.0245x    
    
video:2kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 34.588745%
    
[libx264 @ 0x5613f5420c80] frame I:1     Avg QP:21.16  size:  1622
    
[libx264 @ 0x5613f5420c80] mb I  I16..4: 14.3% 42.9% 42.9%
    
[libx264 @ 0x5613f5420c80] 8x8 transform intra:42.9%
    
[libx264 @ 0x5613f5420c80] coded y,uvDC,uvAC intra: 67.9% 41.1% 33.9%
    
[libx264 @ 0x5613f5420c80] i16 v,h,dc,p: 25% 38% 25% 12%
    
[libx264 @ 0x5613f5420c80] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  8% 58% 18%  2%  3%  3%  1%  4%  2%
    
[libx264 @ 0x5613f5420c80] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 29% 15%  7%  7%  6%  5%  4%  3%
    
[libx264 @ 0x5613f5420c80] i8c dc,h,v,p: 77%  5% 16%  2%
    
[libx264 @ 0x5613f5420c80] kb/s:64.88
    
Conversion failed!

    I’m a newbie with ffmpeg, but as far as I understand, the -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" scales the image so that it height and width are even numbers (needed for mp4 file format), so that should prevent this sort of error from occurring ?

    This looks very similar to this issue over at trac.ffmpeg.org, which has apparently been fixed.

  • libavcodec/qsvenc.c : Set mjpeg height and width alignment

    21 janvier 2020, par JonCookCubic
    libavcodec/qsvenc.c : Set mjpeg height and width alignment

    Currently width_align and height_align are zero when encoding with mjpeg_qsv,
    
which causes "Error submitting the frame for encoding". This patch sets the alignments.
    

    There is a little bit more about the problem here http://ffmpeg.org/pipermail/ffmpeg-user/2019-November/046143.html
    

    Signed-off-by : JonCookCubic <jon.cook@cubicmotion.com>
    
Signed-off-by : Zhong Li <zhongli_dev@126.com>
    • [DH] libavcodec/qsvenc.c

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