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Médias (2)
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Exemple de boutons d’action pour une collection collaborative
27 février 2013, par
Mis à jour : Mars 2013
Langue : français
Type : Image
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Exemple de boutons d’action pour une collection personnelle
27 février 2013, par
Mis à jour : Février 2013
Langue : English
Type : Image
Autres articles (2)
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Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...) -
Monitoring de fermes de MediaSPIP (et de SPIP tant qu’à faire)
31 mai 2013, parLorsque l’on gère plusieurs (voir plusieurs dizaines) de MediaSPIP sur la même installation, il peut être très pratique d’obtenir d’un coup d’oeil certaines informations.
Cet article a pour but de documenter les scripts de monitoring Munin développés avec l’aide d’Infini.
Ces scripts sont installés automatiquement par le script d’installation automatique si une installation de munin est détectée.
Description des scripts
Trois scripts Munin ont été développés :
1. mediaspip_medias
Un script de (...)
Sur d’autres sites (1560)
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ffmpeg : change the grey color in showwaves line
20 février 2018, par AndrewI’m trying to produce a video that has a lime green colored waveform overlayed on top of a background image. Unfortunately though, there is a grey color in the lines as you can see here :
How can I make the grey parts lime green as well ?
And if possible, I would like to make the lines thicker as well.
Here is my ffmpeg command :
ffmpeg -i input.aac -i background.jpg -filter_complex "[0:a]aformat=sample_fmts=s16:sample_rates=4410:channel_layouts=mono,showwaves=size=300x200:mode=p2p:rate=10:colors=#68b847[fg];[1:v][fg]overlay=130:150,format=yuv420p[v]" -map "[v]" -map 0:a -c:v libx264 -r 10 -c:a copy -r 10 -movflags +faststart output.mp4
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Grey squared artifacts after HEVC 10-bit encoding using FFmpeg's NVENC encoder
20 juillet 2017, par CrymanRecently I purchased a brand new GPU - AORUS GeForce GTX 1080 Ti. I found out that it supports HEVC 10-bit encoding, so I wanted to give that a try. Unfortunately, after encoding I noticed some artifacts, which occur in dark scenes and last one frame of the video. You can see them on these screenshots :
I was wondering if someone could help me figure out what might be the cause of these artifacts and how I can get rid of them.
Here is the MI of the source video :
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 2 min
Bit rate mode : Variable
Bit rate : 29.5 Mb/s
Maximum bit rate : 37.0 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.593
Stream size : 25.2 GiB (66%)
Language : English
Default : Yes
Forced : NoAnd here is the MI of the encoded video :
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L4@Main
Codec ID : V_MPEGH/ISO/HEVC
Duration : 2 h 2 min
Bit rate : 3 689 kb/s
Width : 1 920 pixels
Height : 800 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.100
Stream size : 3.15 GiB (95%)
Default : Yes
Forced : No
Color range : LimitedThe command I’m using for encoding :
ffmpeg -hide_banner -i "" -map 0:v:0 -map_chapters -1 -map_metadata -1 -vf "crop=1920:800:0:140" -vcodec hevc_nvenc -pix_fmt p010le -preset hq -profile:v main10 -rc constqp -global_quality 21 -rc-lookahead 32 -g 240 -f matroska Video_CQP21_LAF32_GOP240.mkv
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Convert OpenEXR to WebM Alpha Edges Grey
29 août 2018, par CastlesI apologise if this has been answered before. I have tried lots of options but can’t seem to solve my issue.
I have a sequence of OpenEXR images that I want to merge into a WebM and include transparency. This I the basics of my ffmpeg command :
ffmpeg -i test%04d.exr exr.webm
The problem is the transparency looks dodgy on the edges. Here is an example of how it currently looks. The edge of the box should fade to white but the transparency shows a dirty grey.
Here is an example exr file : Test EXR File
I’ve tried lots of things like
-vf premultiply=inplace=1
or
-pix_fmt yuva420p
but I can’t seem to get it working.
Thanks in advance !