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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (67)
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Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)
Sur d’autres sites (10985)
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Create a video with timestamp from multiple images with "picture taken date/time" in the meta data with ffmpeg or similar ?
16 mars 2018, par m4D_guYI have two time lapse videos with a rate of 1 fps. The camera took 1 Image every minute. Unfortunately it was missed to set the camera to burn/print on every image the time and date. I am trying to burn the time and date afterwards into the video.
I decoded with
ffmpeg
the two .avi files into 7000 single images each and wrote aR
script that renamed the files into their "creation" date (the time and date the pictures where taken). Then i usedexiftool
to write those information "into" the file, into their exif data or meta data or whatever this is called.The final images in the folder are looking like this :
2018-03-12 17_36_40.png
2018-03-12 17_35_40.png
2018-03-12 17_34_40.png
...
Is it possible to create a Video from these images again with
ffmpeg
or similiar with a "timestamp" in the video so you can see while watching a time and date stamp in the video ? -
FFMPEG can't find audio device for webcam on one computer
13 mars 2018, par DavidI am building a webcam recording app. I am using FFMPEG to capture the audio and video. I have a Logitech C930 webcam.
>ffmpeg -list_devices true -f dshow -i dummy ffmpeg version N-90155-g28924f4b48 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7.3.0 (GCC) configuration : —enable-gpl —enable-version3 —enable-sdl2 —enable-bzlib —enable-fontconfig —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libfreetype —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libtheora —enable-libtwolame —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libzimg —enable-lzma —enable-zlib —enable-gmp —enable-libvidstab —enable-libvorbis —enable-libvo-amrwbenc —enable-libmysofa —enable-libspeex —enable-libxvid —enable-libmfx —enable-amf —enable-cuda —enable-cuvid —enable-d3d11va —enable-nvenc —enable-dxva2 —enable-avisynth libavutil 56. 7.101 / 56. 7.101 libavcodec 58. 12.102 / 58. 12.102 libavformat 58. 9.100 / 58. 9.100 libavdevice 58. 2.100 / 58. 2.100 libavfilter 7. 12.100 / 7. 12.100 libswscale 5. 0.101 / 5. 0.101 libswresample 3. 0.101 / 3. 0.101 libpostproc 55. 0.100 / 55. 0.100 [dshow @ 0000024786c38680] DirectShow video devices (some may be both video and audio devices) [dshow @ 0000024786c38680] "Microsoft Camera Front" [dshow @ 0000024786c38680] Alternative name "@device_pnp_~?\display#int3470#4&1835d135&0&uid13424#65e8773d-8f56-11d0-a3b9-00a0c9223196bf89b5a5-61f7-4127-a279-e187013d7caf" [dshow @ 0000024786c38680] "Microsoft Camera Rear" [dshow @ 0000024786c38680] Alternative name "@device_pnp_~?\display#int3470#4&1835d135&0&uid13424#65e8773d-8f56-11d0-a3b9-00a0c92231967c9bbcea-909c-47b3-8cf9-2aa8237e1d4b" [dshow @ 0000024786c38680] "Logitech Webcam C930e" [dshow @ 0000024786c38680] Alternative name "@device_pnp_~?\usb#vid_046d&pid_0843&mi_00#8&dd2d9e1&0&0000#65e8773d-8f56-11d0-a3b9-00a0c9223196\global" [dshow @ 0000024786c38680] "ChromaCam" [dshow @ 0000024786c38680] Alternative name "@device_sw_860BB310-5D01-11D0-BD3B-00A0C911CE863403512D-FE5D-4D68-B053-E86D662E4D58" [dshow @ 0000024786c38680] DirectShow audio devices [dshow @ 0000024786c38680] "Microphone (2- Logitech Webcam C930e)" [dshow @ 0000024786c38680] Alternative name "@device_cm_33D9A762-90C8-11D0-BD43-00A0C911CE86\wave_1AF7CBFB-477F-44D9-B8C4-E178F036B5D1" dummy : Immediate exit requested
Notice the "Microphone (2- Logitech Webcam C930e)" audio device. I can capture from it using FFMPEG.
Now, I move the same camera to a different computer (Intel Compute Stick) running nearly the same build of windows (16299.251 on the stick, 16299.248 on the laptop). Stick is 32-bit home and laptop is 64-bit Pro (shouldn’t matter, should it ?).
I run the same command with the exact same camera and same drivers installed :>ffmpeg -list_devices true -f dshow -i dummy ffmpeg version 3.4.2 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7.3.0 (GCC) configuration : —enable-gpl —enable-version3 —enable-sdl2 —enable-bzlib —enable-fontconfig —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libfreetype —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libtheora —enable-libtwolame —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libzimg —enable-lzma —enable-zlib —enable-gmp —enable-libvidstab —enable-libvorbis —enable-libvo-amrwbenc —enable-libmysofa —enable-libspeex —enable-libxvid —enable-libmfx —enable-cuda —enable-cuvid —enable-d3d11va —enable-nvenc —enable-dxva2 —enable-avisynth libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57. 10.100 libavfilter 6.107.100 / 6.107.100 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 [dshow @ 00797be0] DirectShow video devices (some may be both video and audio devices) [dshow @ 00797be0] "Logitech Webcam C930e" [dshow @ 00797be0] Alternative name "@device_pnp_~?\usb#vid_046d&pid_0843&mi_00#6&dd2d9e1&0&0000#65e8773d-8f56-11d0-a3b9-00a0c9223196\global" [dshow @ 00797be0] DirectShow audio devices [dshow @ 00797be0] Could not enumerate audio only devices (or none found). dummy : Immediate exit requested
No Audio device listed ? What ? If I use python’s sounddevice module, it sees the audio device :
> python -m sounddevice 0 Microsoft Sound Mapper - Output, MME (0 in, 2 out) 1 Remote Audio, MME (0 in, 2 out) 2 Primary Sound Driver, Windows DirectSound (0 in, 2 out) 3 Remote Audio, Windows DirectSound (0 in, 2 out) 4 Remote Audio, Windows WASAPI (0 in, 2 out) 5 Microphone (Logitech Webcam C930e), Windows WDM-KS (2 in, 0 out)
I can capture from that audio device with sounddevice, but I can’t get FFMPEG to capture from it.
>ffmpeg -report -rtbufsize 50000k-f dshow -i video="Logitech Webcam C930e":audio="Microphone (Logitech Webcam C930e)" -t 120 -y -s 1920x1080 -q 2 -video_pin_name 1 -audio_pin_name 5 -filter:v setpts=1*PTS Watchmen_20180312095119_c.avi ffmpeg started on 2018-03-12 at 17:07:08 Report written to "ffmpeg-20180312-170708.log" ffmpeg version 3.4.2 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7.3.0 (GCC) configuration : —enable-gpl —enable-version3 —enable-sdl2 —enable-bzlib —enable-fontconfig —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libfreetype —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libtheora —enable-libtwolame —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libzimg —enable-lzma —enable-zlib —enable-gmp —enable-libvidstab —enable-libvorbis —enable-libvo-amrwbenc —enable-libmysofa —enable-libspeex —enable-libxvid —enable-libmfx —enable-cuda —enable-cuvid —enable-d3d11va —enable-nvenc —enable-dxva2 —enable-avisynth libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57. 10.100 libavfilter 6.107.100 / 6.107.100 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 video=Logitech Webcam C930e:audio=Microphone (Logitech Webcam C930e) : No such file or directory
I have been trying to debug by removing and reinstalling drivers, etc, but to no avail. I also grabbed a Microsoft Lifecam webcam and got similar results. I can see the lifecam’s audio on the laptop but not the stick in just the same manner as the logitech camera.
How can I get the audio device to show up on the stick so I can capture from it ? -
ffmpeg error on AWS lambda
13 mars 2018, par anarchos78I’m trying to convert a jpg image to mp4 and transcode a mp4 file with ffmpeg on AWS lambda.
For the first task I issue the following :
ffmpeg -y -f lavfi -i anullsrc -loop 1 -framerate 30 -i test.jpg -t 2 -pix_fmt yuv420p -vf scale=640:480 -c:v libx264 -profile:v baseline -level 3.0 -c:a aac -map 0:a -map 1:v -strict -2 -preset ultrafast /tmp/jpg_output.mp4
and for the second :
ffmpeg -i /var/task/test.mp4 -c:v libx264 -c:a copy -strict -2 -v 9 -preset ultrafast -y /tmp/output.mp4
The funny thing is that the aforementioned tasks (jpg conversion and video transcoding) complete successfully, both locally and on AWS lambda, but I’m getting the below error messages :
Locally : "err : ffmpeg version 3.4.2 Copyright (c) 2000-2018 the FFmpeg developers"
AWS LAMBDA : "err : ffmpeg version N-89977-gddd851f7cb-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers"
Additionally, on AWS Lambda, the function exits with error, which results in re-execution of the function.
I searched for solutions to no avail. Any suggestions ?