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Médias (1)
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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (25)
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La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Contribute to documentation
13 avril 2011Documentation is vital to the development of improved technical capabilities.
MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
To contribute, register to the project users’ mailing (...)
Sur d’autres sites (3560)
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OpenCV3 returning float FRAME_COUNT
15 mars 2016, par mpratI am using OpenCV3 on OSX with Python 2.7 bindings. However, when I try to read the frame count of my video (a .mp4 video), it returns a float - I am expecting an int. Do I need to compile OpenCV3 with some special flags ? Am I missing some codecs ?
import cv2
vid = cv2.VideoCapture("vid.mp4")
print vid.get(cv2.CAP_PROP_FRAME_WIDTH)And it returns a float.
Installation details :
- ffmpeg :
brew install ffmpeg --with-dcadec --with-openh264 --with-openjpeg --with-openssl --with-tools --with-x265 --with-zimg --with-libvidstab --with-libvpx
- opencv3 :
brew install opencv3 --with-ffmpeg --with-contrib
- ffmpeg :
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How to set NTSC and CBR in ffmpeg ?
14 mars 2024, par mvr rvmThe parameters I aim to achieve are described below, but I'm unable to set a constant bitrate and the NTSC standard.


General
ID/String : 1 (0x1)
Format/String : MPEG-TS
FileSize/String : 2.80 GiB
Duration/String : 1 h 28 min
OverallBitRate_Mode/String : Constant
OverallBitRate/String : 4 535 kb/s
FrameRate/String : 23.976 FPS
FileExtension_Invalid : ts m2t m2s m4t m4s tmf ts tp trp ty

Video
ID : 49 (0x31)
Menu ID : 2 (0x2)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Format settings, GOP : M=3, N=23
Codec ID : 27
Duration : 1 h 28 min
Bit rate mode : Constant
Bit rate : 4 000 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 (24000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.181
Stream size : 2.43 GiB (86%)
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709



Using the command :
ffmpeg -i input.mpg -codec:v libx264 -profile:v high -level 3.1 -coder 1 -pix_fmt yuv420p -r 24000/1001 -s 1280x720 -aspect 16:9 -x264-params "cabac=1:no-deblock=0:ref=3:weightp=2:bframes=3:b_pyramid=1:b-adapt=2:nal-hrd=cbr:bitrate=4M:minrate=4M:maxrate=4M:bufsize=8M" -color_range tv -color_primaries bt709 -color_trc bt709 -colorspace bt709 -c:a mp2 -b:a 128k -ac 2 -ar 44100 -f mpegts output.mpg


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Improve FFmpeg/avconv load and speed ?
18 novembre 2013, par Rahul Jodhaniwhen i convert video through ffmpeg/avconv it's take above 95% percentage, is there any way to reduce the converting time ?
Thanks in advanced.