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Autres articles (75)

  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • 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 (6270)

  • Piping from ffmpeg to x264 not working

    23 mai 2016, par JiZhaku_San

    I want to encode video file to AVC-I50. I have a vbs script.

    set objShell = WScript.CreateObject ("WScript.Shell")
    

    
objShell.run "cmd.exe /C Processors\ffmpeg.exe -i  """ & PathToInputFile & """ -f lavfi 
    
-i aevalsrc=0 -loglevel quiet -shortest -filter_complex 
    
""[0:1]pan=1|c0=c0[a1],[0:1]pan=1|c0=c1[a2],[0:1]pan=1|c0=c2[a3],[0:1]pan=1|c0=c3[a4]""  
    
-map ""[a1]"" -c:a pcm_s24le -ar 48000 -y -t """ & duration & """ tmp\01.wav 
    
-map ""[a2]"" -c:a pcm_s24le -ar 48000 -y -t """ & duration & """ tmp\02.wav 
    
-map ""[a3]"" -c:a pcm_s24le -ar 48000 -y -t """ & duration & """ tmp\03.wav 
    
-map ""[a4]"" -c:a pcm_s24le -ar 48000 -y -t """ & duration & """ tmp\04.wav  
    
-map 0:v -c:v rawvideo -strict -1 -vf format=yuv420p10,fps=fps=30000/1001 
    
-s 1440x1080 -q:v 0 -an -f yuv4mpegpipe pipe:output.y4m | Processors\x264.exe - 
    
--demuxer y4m  --frames 1077 --interlaced --tff  --output-csp i420 --no-cabac 
    
--force-cfr --keyint 1 --colorprim bt709 --transfer bt709 --tune psnr --sar 1:1 
    
--nal-hrd cbr --pic-struct --videoformat component  --vbv-maxrate 50000 --vbv-bufsize 2000 
    
--colormatrix bt709 --bitrate 50000 --avcintra-class 50 --output tmp\Result.h264 ", 1, true

    When I try to run in cmd this vbs file, it is working.
    But when I try to run it in C# as Process - it doesn’t.
    Btw. when I try to run it as plain command in cmd it sais that
    "-" is not an input for x264.

  • Piping from ffmpeg to x264 not working

    23 mai 2016, par JiZhaku_San

    I want to encode video file to AVC-I50. I have a vbs script.

    set objShell = WScript.CreateObject ("WScript.Shell")
    

    
objShell.run "cmd.exe /C Processors\ffmpeg.exe -i  """ & PathToInputFile & """ -f lavfi 
    
-i aevalsrc=0 -loglevel quiet -shortest -filter_complex 
    
""[0:1]pan=1|c0=c0[a1],[0:1]pan=1|c0=c1[a2],[0:1]pan=1|c0=c2[a3],[0:1]pan=1|c0=c3[a4]""  
    
-map ""[a1]"" -c:a pcm_s24le -ar 48000 -y -t """ & duration & """ tmp\01.wav 
    
-map ""[a2]"" -c:a pcm_s24le -ar 48000 -y -t """ & duration & """ tmp\02.wav 
    
-map ""[a3]"" -c:a pcm_s24le -ar 48000 -y -t """ & duration & """ tmp\03.wav 
    
-map ""[a4]"" -c:a pcm_s24le -ar 48000 -y -t """ & duration & """ tmp\04.wav  
    
-map 0:v -c:v rawvideo -strict -1 -vf format=yuv420p10,fps=fps=30000/1001 
    
-s 1440x1080 -q:v 0 -an -f yuv4mpegpipe pipe:output.y4m | Processors\x264.exe - 
    
--demuxer y4m  --frames 1077 --interlaced --tff  --output-csp i420 --no-cabac 
    
--force-cfr --keyint 1 --colorprim bt709 --transfer bt709 --tune psnr --sar 1:1 
    
--nal-hrd cbr --pic-struct --videoformat component  --vbv-maxrate 50000 --vbv-bufsize 2000 
    
--colormatrix bt709 --bitrate 50000 --avcintra-class 50 --output tmp\Result.h264 ", 1, true

    When I try to run in cmd this vbs file, it is working.
    But when I try to run it in C# as Process - it doesn’t.
    Btw. when I try to run it as plain command in cmd it sais that
    "-" is not an input for x264.

  • ffmper with vlc - too heavy screen grabbing, resulting injumpy file, frame loss

    15 mai 2016, par OGP

    I’m using ’vlc/ffmpeg’ package to grab the screen and convert it to H.264 file.

    The problem arises when the host is heavily loaded. I need to maintain correct time stamps and use the 5 fps (relatively low frame rate). Yet sometimes the resulting file jumps few seconds forward, apparently due to frame loss.
    I can deal with the frame loss, it’s OK, but I need to duplicate lost frames to maintain correct timing.

    My configuration file :

    vlc.exe screen :// -I dummy —verbose=2 —one-instance :screen-fps=5 :screen-caching=10000 :sout=#transcodevenc=x264preset=ultrafast,tune=zerolatency,vcodec=h264,fps=5,vb=3000,width=1024,height=576,acodec=none:filedst="C :\tmp\output.mp4"

    What should I add/config to preserve proper time stamps and clip duration ?

    Many thanks for your help.

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