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Autres articles (55)
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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 (...) -
Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...) -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.
Sur d’autres sites (4597)
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FFmpeg Overlay Zoom + Static Blurred Background
17 mai 2021, par John MatleyI am trying to make a video from a single image which will take the image and (regardless of height/width) will stretch to fit the whole screen (1920x1080) and be blurred. Next I want to take the same image, keeping the aspect ratio, zoom out to 100% for the entire 10 second video.


The code I wrote does most of this fine, except it also zooms the blurred background. I just want a static blurred background with a floating zooming original image over the top.


Here's what I have so far :


ffmpeg -y -i image.jpg -filter_complex "[0]scale=-1:1080[in];[0]scale=1920:1080,boxblur=10:10,setsar=1[bg];[bg][in]overlay=(W-w)/2:(H-h)/2,scale=7680x4320,zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0008))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':s=1920x1080:d=600[output]" -map "[output]" -t 10 -shortest -pix_fmt yuva420p -c:v h264_qsv -r 60 video.mp4



All I want is to keep the blurred background static at 100% whilst the main image zooms out to 100% over the 10 second duration..


Any help would be appreciated.


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how to convert a video to a specific format [on hold]
5 juin 2015, par HankI have a video A, it’s mediainfo is below :
General
Complete name : 66TuSJo4dZM.flv
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 36.1 MiB
Duration : 2mn 23s
Overall bit rate mode : Variable
Overall bit rate : 2 114 Kbps
Encoded date : UTC 2010-05-09 18:17:12
Tagged date : UTC 2010-05-09 18:17:12
gsst : 0
gstd : 143800
gssd : BCAA9AF4BHH1357111509549144
gshh : r8---sn-5njj-u2xe.c.youtube.com
Video
ID : 2
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 2mn 23s
Bit rate : 1 987 Kbps
Maximum bit rate : 7 825 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 24.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.090
Stream size : 33.9 MiB (94%)
Title : (C) 2007 Google Inc. v08.13.2007.
Encoded date : UTC 2010-05-09 18:17:12
Tagged date : UTC 2010-05-09 18:17:12
Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 2mn 23s
Bit rate mode : Variable
Bit rate : 125 Kbps
Maximum bit rate : 221 Kbps
Channel(s) : 2 channels
Channel positions : Front : L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 2.14 MiB (6%)
Title : (C) 2007 Google Inc. v08.13.2007.
Encoded date : UTC 2010-05-09 18:17:12
Tagged date : UTC 2010-05-09 18:17:12Other video B, it’s mediainfo is :
General
Complete name : TEST.mp4
Format : dash
Codec ID : dash
File size : 7.17 MiB
Duration : 47s 447ms
Overall bit rate : 1 267 Kbps
Encoded date : UTC 2015-05-31 04:56:43
Tagged date : UTC 2015-05-31 04:56:43
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 47s 447ms
Bit rate : 1 264 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.046
Stream size : 7.15 MiB (100%)
Encoded date : UTC 2015-05-31 04:56:43
Tagged date : UTC 2015-05-31 04:56:43How to convert the format of B to A’s ?
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ffmpeg setting ouput option correctly (-r)
25 mars 2018, par machineryI would like to use ffmpeg on Ubuntu with the following command :
ffmpeg -i input_video -vf scale=w=320:h=-1 -y -vcodec libx264 -preset ultrafast -r 60 output_video
For the -r option the documentation says :
-r[:stream_specifier] fps (input/output,per-stream)
Set frame rate (Hz value, fraction or abbreviation).
As an input option, ignore any timestamps stored in the file and
instead generate timestamps assuming constant frame rate fps. This is
not the same as the -framerate option used for some input formats like
image2 or v4l2 (it used to be the same in older versions of FFmpeg).
If in doubt use -framerate instead of the input option -r.As an output option, duplicate or drop input frames to achieve
constant output frame rate fps.I would like to use the output option. How can I do this ? What is the per-stream option doing (it is not written above) ?
Second, is it correct that the
-vf scale=w=320:h=-1
option scaled the video to width 320 and keeping the aspect ratio ?