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Médias (1)
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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (106)
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Gestion de la ferme
2 mars 2010, parLa ferme est gérée dans son ensemble par des "super admins".
Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
Dans un premier temps il utilise le plugin "Gestion de mutualisation" -
Gestion des droits de création et d’édition des objets
8 février 2011, parPar défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs
Sur d’autres sites (10195)
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ffmpeg - problem in copying the stream with timed metadata during a split command
15 novembre 2020, par Swarna AnanthanI am facing a problem while copying mp4 along with the data stream in a split command.


ffmpeg -i 'testinput.mp4' -map 0 -copy_unknown -ss 12.800000 -t 14.549 -c copy testoutput.mp4



I am getting the below error.


Duration: 00:04:45.25, start: 0.000000, bitrate: 120 kb/s
    Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 116 kb/s (default)
    Metadata:
      creation_time   : 2020-05-26T20:58:03.000000Z
      handler_name    : WowzaStreamingEngine
    Stream #0:1(eng): Data: none (amf0 / 0x30666D61), 1 kb/s (default)
    Metadata:
      creation_time   : 2020-05-26T20:58:03.000000Z
      handler_name    : WowzaStreamingEngine

File 'testoutput.mp4' already exists. Overwrite? [y/N] y

[mp4 @ 0x7fe8b0808800] Could not find tag for codec none in stream #1, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Stream mapping:
  
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Last message repeated 1 time



Stream#1 is datastream in my case.


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ffmpeg extract frame and get timestamp based on creation time for each extracted frame in exif or txt
4 août 2021, par ScalingI try to extract frames from a underwater survey video using ffmpeg. the extracted frames should be merged with a gps position based on a timestamp later in the process. the code i use to extract the frames is :



ffmpeg -i GOPR0173.MP4 -qscale:v 2 -r 1 frames/%4d.jpg
.


I need a solution to get the real timestamp of the frame based on the survey datetime, so that the timestamp of the frame equals the real time when the video was created. Ideally the timestamp is saved in the images exif or if this is not possible in a seperate textfile and the timestamp is used as name of the files like 2020_01_01_HH_MM_SS.jpg.



My idea is to use the creation_time of the video add the timestamp of the frame to this and store the result in the exif of the extracted frame or if this is not possible in a txt file.



Im new to ffmpeg and really lost and would appreciate any help to solve this task !
If anyone could provide me the necessary code, that would be awesome !



C:\Unterwasserfotos>ffmpeg -i GOPR0173.MP4 -vstats -qscale:v 2 -r 0.1 frames/%4d.jpg
ffmpeg version git-2020-01-21-fc6fde2 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 9.2.1 (GCC) 20200122
 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls
 --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enabl
e-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-
libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwol
ame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enab
le-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable
-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable
-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enabl
e-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
 libavutil 56. 38.100 / 56. 38.100
 libavcodec 58. 66.100 / 58. 66.100
 libavformat 58. 35.104 / 58. 35.104
 libavdevice 58. 9.103 / 58. 9.103
 libavfilter 7. 71.100 / 7. 71.100
 libswscale 5. 6.100 / 5. 6.100
 libswresample 3. 6.100 / 3. 6.100
 libpostproc 55. 6.100 / 55. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'GOPR0173.MP4':
 Metadata:
 major_brand : mp41
 minor_version : 538120216
 compatible_brands: mp41
 creation_time : 2020-01-21T12:33:10.000000Z
 firmware : HD4.02.05.00.00
 Duration: 00:02:21.85, start: 0.000000, bitrate: 30152 kb/s
 Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1920x1080 [SAR
 1:1 DAR 16:9], 30000 kb/s, 50 fps, 50 tbr, 90k tbn, 100 tbc (default)
 Metadata:
 creation_time : 2020-01-21T12:33:10.000000Z
 handler_name : GoPro AVC
 encoder : GoPro AVC encoder
 timecode : 12:33:11:16
 Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (defa
ult)
 Metadata:
 creation_time : 2020-01-21T12:33:10.000000Z
 handler_name : GoPro AAC
 timecode : 12:33:11:16
 Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
 Metadata:
 creation_time : 2020-01-21T12:33:10.000000Z
 handler_name : GoPro TCD
 timecode : 12:33:11:16
 Stream #0:3(eng): Data: none (fdsc / 0x63736466), 12 kb/s (default)
 Metadata:
 creation_time : 2020-01-21T12:33:10.000000Z
 handler_name : GoPro SOS
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
Press [q] to stop, [?] for help
Output #0, image2, to 'frames/%4d.jpg':
 Metadata:
 major_brand : mp41
 minor_version : 538120216
 compatible_brands: mp41
 firmware : HD4.02.05.00.00
 encoder : Lavf58.35.104
 Stream #0:0(eng): Video: mjpeg, yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s,
 0.10 fps, 0.10 tbn, 0.10 tbc (default)
 Metadata:
 creation_time : 2020-01-21T12:33:10.000000Z
 handler_name : GoPro AVC
 timecode : 12:33:11:16
 encoder : Lavc58.66.100 mjpeg
 Side data:
 cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
frame= 16 fps=0.3 q=2.0 Lsize=N/A time=00:02:40.00 bitrate=N/A dup=0 drop=7076 speed=3.26x
video:1938kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown´´´










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kmsgrab : Use GetFB2 if available
5 juillet 2020, par Mark Thompsonkmsgrab : Use GetFB2 if available
The most useful feature here is the ability to automatically extract the
framebuffer format and modifiers. It also makes support for multi-plane
framebuffers possible, though none are added to the format table in this
patch.This requires libdrm 2.4.101 (from April 2020) to build, so it includes a
configure check to allow compatibility with existing distributions. Even
with libdrm support, it still won't do anything at runtime if you are
running Linux < 5.7 (before June 2020).