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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

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  • ffmpeg : wmv files generated on Mac can't be played in Windows

    16 juin 2015, par TTZ

    On Mac OS X 10.6.8, I converted a animated gif to a video file in wmv (a requested file format) by using

    ffmpeg -i File.gif -s 400x400 NewFile.wmv

    The video file played fine using VLC on Mac.
    The file can’t be played on a Windows 7 machine using the Windows Media Player. Is there a way that I can save the animated gif as a WMV file that can be played using the Windows Media Player on a Windows 7 machine ?

    Many thanks for your time !

  • ffmpeg command line for capturing (and recording) audio and video in 720p from decklink card using Windows 7

    24 novembre 2014, par Huron

    I am trying to capture audio and video from a blackmagic decklink capture card using Windows 7 @ 720p, but I cant seem to get the ffmpeg command line settings right.

    ffmpeg -list_devices true -f dshow -i dummy

    [dshow @ 02457a60] DirectShow video devices
    
[dshow @ 02457a60]  "Blackmagic WDM Capture"
    
[dshow @ 02457a60]  "Decklink Video Capture"
    
[dshow @ 02457a60] DirectShow audio devices
    
[dshow @ 02457a60]  "Decklink Audio Capture"

    ffmpeg -list_options true -f dshow -i video="Decklink Video Capture"

    [dshow @ 03c2ea20] DirectShow video device options
    
[dshow @ 03c2ea20]  Pin "Capture"
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=720x486 fps=29.97 max s=720x486 fps=29.97
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=720x486 fps=23.976 max s=720x486 fps=23.976
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=720x576 fps=25 max s=720x576 fps=25
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=720x486 fps=59.9402 max s=720x486 fps=59.9402
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=720x576 fps=50 max s=720x576 fps=50
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=1920x1080 fps=23.976 max s=1920x1080 fps=23.976
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=1920x1080 fps=24 max s=1920x1080 fps=24
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=1920x1080 fps=25 max s=1920x1080 fps=25
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=1920x1080 fps=29.97 max s=1920x1080 fps=29.97
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=1920x1080 fps=30 max s=1920x1080 fps=30
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=1280x720 fps=50 max s=1280x720fps=50
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=1280x720 fps=59.9402 max s=1280x720 fps=59.9402
    
[dshow @ 03c2ea20]   pixel_format=uyvy422  min s=1280x720 fps=60.0002 max s=1280x720 fps=60.0002

    ffmpeg -list_options true -f dshow -i audio="Decklink Audio Capture"

    [dshow @ 047fea20] DirectShow audio device options
    
[dshow @ 047fea20]  Pin "Capture"
    
[dshow @ 047fea20]   min ch=1 bits=16 rate= 48000 max ch=1 bits=16 rate= 48000
    
[dshow @ 047fea20]   min ch=2 bits=16 rate= 48000 max ch=2 bits=16 rate= 48000
    
[dshow @ 047fea20]   min ch=4 bits=16 rate= 48000 max ch=4 bits=16 rate= 48000
    
[dshow @ 047fea20]   min ch=6 bits=16 rate= 48000 max ch=6 bits=16 rate= 48000
    
[dshow @ 047fea20]   min ch=8 bits=16 rate= 48000 max ch=8 bits=16 rate= 48000
    
[dshow @ 047fea20]   min ch=10 bits=16 rate= 48000 max ch=10 bits=16 rate= 48000
    
[dshow @ 047fea20]   min ch=12 bits=16 rate= 48000 max ch=12 bits=16 rate= 48000
    
[dshow @ 047fea20]   min ch=16 bits=16 rate= 48000 max ch=16 bits=16 rate= 48000

    This is the stream information for my current video/audio source, connected to the decklink card’s hdmi port

    Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422(tv), 1280x720, 59.94 tbr, 10000k tbn, 59.94 tbc
    
Stream #0:1: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s

    Ultimately I will need to display this video on screen. And simultaneously be able to start and stop recording, while the preview keeps playing.

    My idea was to use ffmpeg to capture the video and audio signal and transmit this to a network stream (eg 127.0.0.1:6666). Then use VLC player to display the stream (the preview). And ultimately start and/or stop another ffmpeg to save that same stream to disk.

    In my mind this works, but I am no audio/video expert so if anyone with more experience could help out, I would appreciate it.

    Update :

    I have been able to display the video using ffplay, with the following command :

    ffplay -f dshow -video_size 1280x720 -rtbufsize 702000k -framerate 60 -i video="Decklink Video Capture":audio="Decklink Audio Capture" -threads 2

    Next step is streaming it so I can view the stream (preview) with VLC.

    Tried to use this command :

    ffmpeg -f dshow -video_size 1280x720 -rtbufsize 702000k -framerate 60 -i video="Decklink Video Capture":audio="Decklink Audio Capture" -threads 2 -f mpegts rtp://127.0.0.1:6666?pkt_size=188?buffer_size=65535

    Which does not give any errors, so appears to work. But when I try to open the stream in VLC I get the following error :

    SDP required :
    A description in SDP format is required to receive the RTP stream. Note that rtp :// URIs cannot work with dynamic RTP payload format (65).

    After a bit of reading it seems I should not be streaming to rtp :// but rather to udp ://

    Command became :

    ffmpeg -f dshow -video_size 1280x720 -rtbufsize 702000k -framerate 60 -i video="Decklink Video Capture":audio="Decklink Audio Capture" -threads 2 -f mpegts udp://127.0.0.1:6666?pkt_size=188?buffer_size=65535

    And when I try to open it now in VLC I get no error, no warning, but also no video.

    Time for some more reading.

  • Trying to use FFMPEG in C using Codeblocks IDE under Windows 8.1

    31 octobre 2013, par obelix

    I have been trying to use FFMPEG in C using Codeblocks IDE under Windows 8.1.
    I've done the linking stuff required in order to make my code compile but i get the following error :

    C :\Users\user\Desktop\MScProject\FFmpegTest2\main.c|82|error : 'CODEC_TYPE_VIDEO' undeclared (first use in this function)|

    The source i use is the one from the following tutorial
    http://dranger.com/ffmpeg/tutorial01.c

    (original link : http://dranger.com/ffmpeg/tutorial01.html)

    Any ideas ??
    Thanks in advance !!
    (btw the same thing happens when i am trying to compile the program in ubuntu)

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