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  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

  • Ajouter notes et légendes aux images

    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
    Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
    Modification lors de l’ajout d’un média
    Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

Sur d’autres sites (10406)

  • How to quote a file name with a single quote in ffmpeg movie= filter notation ? [closed]

    26 mai, par PieterV

    I am trying to run ffmpeg using a file that contains a single quote ' in the filename.

    


    I tried to follow the docs that say I should replace a ' with '\''.
    
And a ticket that says I should replace a ' with \\\\\'.

    


    I've tried both, and can't get get it working.

    


    E.g. docs format :

    


    ./ffprobe -loglevel error -read_intervals %00:30 -select_streams s:0 -f lavfi -i "movie='D\:\\Test\\Interlaced - Dragons'\'' Den - S14E02 - Episode 2.mkv'[out0+subcc]" -show_packets -print_format json

{
[Parsed_movie_0 @ 00000222a2f82200] Failed to avformat_open_input 'D:\Test\Interlaced - Dragons Den - S14E02 - Episode 2.mkv'
[AVFilterGraph @ 00000222a2f76ec0] Error processing filtergraph: No such file or directory
movie='D\:\\Test\\Interlaced - Dragons'\'' Den - S14E02 - Episode 2.mkv'[out0+subcc]: No such file or directory


    


    E.g. ticket format :

    


    ./ffprobe -loglevel error -read_intervals %00:30 -select_streams s:0 -f lavfi -i "movie='D\:\\Test\\Interlaced - Dragons\\\\\' Den - S14E02 - Episode 2.mkv'[out0+subcc]" -show_packets -print_format json

{
[Parsed_movie_0 @ 00000158613d2080] Failed to avformat_open_input 'D:\Test\Interlaced - Dragons\\ Den - S14E02 - Episode 2.mkv[out0+subcc]'
[AVFilterGraph @ 00000158613c6ec0] Error processing filtergraph: No such file or directory
movie='D\:\\Test\\Interlaced - Dragons\\\\\' Den - S14E02 - Episode 2.mkv'[out0+subcc]: No such file or directory


    


    > dir "D:\Test\Interlaced - Dragons' Den - S14E02 - Episode 2.mkv"

    Directory: D:\Test

Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
-a---           4/20/2025 11:38 AM       18059051 Interlaced - Dragons' Den - S14E02 - Episode 2.mkv


    


    This is on Win11 using FFmpeg7.
    
Any ideas ?

    


    [Update]
    
I found a doc on escape filtergraph strings, did not help, I tried 0 to 7 \.

    


    I also found and tried the ffescape utility, the output it produces just uses a single \' and does not work.

    


    > echo "D:\Test\Interlaced - Dragons' Den - S14E02 - Episode 2.mkv" | ./ffescape.exe
=> D:\\Test\\Interlaced - Dragons\' Den - S14E02 - Episode 2.mkv\

> ./ffprobe -loglevel error -read_intervals %00:30 -select_streams s:0 -f lavfi -i "movie='D:\\Test\\Interlaced - Dragons\' Den - S14E02 - Episode 2.mkv\'[out0+subcc]" -show_packets -print_format json
{
[Parsed_movie_0 @ 0000021348f12200] Failed to avformat_open_input 'D'
[AVFilterGraph @ 0000021348f06ec0] Error processing filtergraph: No such file or directory
movie='D:\\Test\\Interlaced - Dragons\' Den - S14E02 - Episode 2.mkv\'[out0+subcc]: No such file or directory


    


    [Update]
    
I found docs for ffmpeg filter script where I can place commands in a file.

    


    I tried ./ffprobe -loglevel error -read_intervals %00:01 -select_streams s:0 -f lavfi -/i "d:\filtergraph.txt" -show_packets -print_format json, and it load the script.

    


    Works : movie=test.mkv[out0+subcc]\ if test.mkv is in ffprobe dir.
Works : movie=test\'.mkv[out0+subcc]\ if test'.mkv is in ffprobe dir.
    
Not : movie=D:\test.mkv[out0+subcc]
    
Not : movie=D\:\\test.mkv[out0+subcc]
    
Not : movie=test space.mkv[out0+subcc]
    
Not : movie='test space.mkv[out0+subcc]'
    
Not : movie="test space.mkv[out0+subcc]"
    
Not : 'movie=test space.mkv[out0+subcc]'
    
Not : "movie=test space.mkv[out0+subcc]"

    


     :(

    


    Update with working answer

    


  • FFMPEG send RTP audio at 8k bytes/sec [closed]

    10 mai, par Muzza

    I'm trying to use FFMPEG to mimick a device that transmits G711U audio over UDP/RTP at 8k bytes per second.
The device im mimicking sends rtp packets every 20ms with 160byte payload.

    


    I've had limited success using the following command

    


    ffmpeg -f dshow -i audio="Microphone (Realtek(R) Audio)" -ac 1 -ar 8000 -ab 8 -acodec pcm_mulaw -f rtp rtp://127.0.0.1:12345?pkt_size=160


    


    This sends G711U encoded audio, in 160byte chunks, but streams at 64kB/s, not the 8kB/s that my device is expected, so the device errors out ?

    


    Any idea's would be massively appreciated !

    


    Thank you

    


    Log from FFMPEG

    


    >ffmpeg -f dshow -i audio="Microphone (Realtek(R) Audio)" -ac 1 -ar 8000 -ab 8 -acodec pcm_mulaw -f rtp rtp://127.0.0.1:12345?pkt_size=160
ffmpeg version 2025-04-23-git-25b0a8e295-essentials_build-www.gyan.dev Copyright (c) 2000-2025 the FFmpeg developers
  built with gcc 14.2.0 (Rev3, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      60.  2.100 / 60.  2.100
  libavcodec     62.  0.101 / 62.  0.101
  libavformat    62.  0.100 / 62.  0.100
  libavdevice    62.  0.100 / 62.  0.100
  libavfilter    11.  0.100 / 11.  0.100
  libswscale      9.  0.100 /  9.  0.100
  libswresample   6.  0.100 /  6.  0.100
  libpostproc    59.  1.100 / 59.  1.100
[aist#0:0/pcm_s16le @ 00000198256b73c0] Guessed Channel Layout: stereo
Input #0, dshow, from 'audio=Microphone (Realtek(R) Audio)':
  Duration: N/A, start: 135470.702000, bitrate: 1411 kb/s
  Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s, Start-Time 135470.702s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s16le (native) -> pcm_mulaw (native))
Press [q] to stop, [?] for help
[pcm_mulaw @ 00000198256cf240] Bitrate 8 is extremely low, maybe you mean 8k
Output #0, rtp, to 'rtp://127.0.0.1:12345?pkt_size=160':
  Metadata:
    encoder         : Lavf62.0.100
  Stream #0:0: Audio: pcm_mulaw, 8000 Hz, mono, s16 (8 bit), 64 kb/s
    Metadata:
      encoder         : Lavc62.0.101 pcm_mulaw
SDP:
v=0
o=- 0 0 IN IP4 127.0.0.1
s=No Name
c=IN IP4 127.0.0.1
t=0 0
a=tool:libavformat 62.0.100
m=audio 12345 RTP/AVP 0
b=AS:64

[out#0/rtp @ 00000198256cdd00] video:0KiB audio:973KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 8.467470%
size=    1055KiB time=00:02:04.51 bitrate=  69.4kbits/s speed=   1x
Exiting normally, received signal 2.


    


    Wireshark :
Wireshark Log

    


    Shows packets being sent every 0.20ms

    


  • avutil : Fix linking x86 asm constants with Clang in MSVC mode

    12 juin, par Martin Storsjö
    avutil : Fix linking x86 asm constants with Clang in MSVC mode

    This fixes building with Clang in MSVC mode, for x86, which was
    
broken in 6e49b8699657b808b7dc80033f2c3f2d0e029fa3 (in Nov 2024) ;
    
previously it failed with undefined symbols for the constants
    
defined with DECLARE_ASM_CONST, accessed via inline assembly.
    

    Before 57861911a34e1c33796be97f2b2f44e05fffd647, there was an
    
    #elif defined(__GNUC__) || defined(__clang__)
    
case before the
    
    #elif defined(_MSC_VER)
    
case for defining DECLARE_ASM_CONST, which included av_used.
    
(This case included the explicit "defined(__clang__)" since
    
f637046d3134a331e4b5a7243ac3dfb92735b8a5.)
    

    After 57861911a34e1c33796be97f2b2f44e05fffd647, it used the
    
generic definition of DECLARE_ASM_CONST that also included
    
av_used - which also worked for Clang in MSVC mode. But after
    
6e49b8699657b808b7dc80033f2c3f2d0e029fa3, Clang in MSVC mode
    
ended up using the MSVC specific variant which lacked the
    
av_used declaration, causing linker errors due to undefined
    
symbols.
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libavutil/mem_internal.h

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