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  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Contribute to documentation

    13 avril 2011

    Documentation 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 (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

Sur d’autres sites (4460)

  • ffmpeg error on AWS lambda

    13 mars 2018, par anarchos78

    I’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 ?

  • FFMPEG can't find audio device for webcam on one computer

    13 mars 2018, par David

    I 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 ?

  • 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_guY

    I 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 a R script that renamed the files into their "creation" date (the time and date the pictures where taken). Then i used exiftoolto 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 ?

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