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Autres articles (98)

  • MediaSPIP Core : La Configuration

    9 novembre 2010, par

    MediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
    Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...)

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

  • 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 (9122)

  • Cut video command producing only audio

    12 février 2018, par Sandeep

    I am using ffmpeg in Android app and my command code looks like :

          final String[] command=new String[]{"-i",inputFileName , "-ss",
    
 String.valueOf(duration) , "-codec","copy", "-t",String.valueOf(start) , outputFileName};

    The logcat contains following ffmpeg output which shows video as 0kB in last line. Where should I look for fixing this because the final output file is a mp4 file but the video content is missing and only audio is present for the trimmed duration :

    02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg ffmpeg version n3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   built with gcc 4.9.x (GCC) 20150123 (prerelease)
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   configuration: --target-os=linux --cross-prefix=/root/bravobit/ffmpeg-android/toolchain-android/bin/i686-linux-android- --arch=x86 --cpu=i686 --enable-runtime-cpudetect --sysroot=/root/bravobit/ffmpeg-android/toolchain-android/sysroot --disable-asm --enable-pic --enable-libx264 --enable-libfreetype --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libopus --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-linux-perf --disable-doc --disable-shared --enable-static --enable-runtime-cpudetect --enable-nonfree --enable-network --enable-avresample --enable-avformat --enable-avcodec --enable-indev=lavfi --enable-hwaccels --enable-ffmpeg --enable-zlib --enable-gpl --enable-small --disable-asm --pkg-config=/root/bravobit/ffmpeg-android/ffmpeg-pkg-config --prefix=/root/bravobit/ffmpeg-android/build/x86 --extra-cflags='-I/root/bravobit/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -march=i686' --extra-ldflags='-L/root/bravobit/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-cxxflags= --extra-libs='-lpng -lx264 -lm -logg'
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavutil      55. 78.100 / 55. 78.100
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavcodec     57.107.100 / 57.107.100
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavformat    57. 83.100 / 57. 83.100
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavdevice    57. 10.100 / 57. 10.100
    
02-12 17:22:43.837 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavfilter     6.107.100 /  6.107.100
    
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg   libavresample   3.  7.  0 /  3.  7.  0
    
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg   libswscale      4.  8.100 /  4.  8.100
    
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg   libswresample   2.  9.100 /  2.  9.100
    
02-12 17:22:43.838 25335-25335/service D/FFmpeg: Started command : ffmpeg   libpostproc    54.  7.100 / 54.  7.100
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/SampleVideo_1280x720_1mb.mp4':
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg   Metadata:
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     major_brand     : isom
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     minor_version   : 512
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     compatible_brands: isomiso2avc1mp41
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     encoder         : Lavf53.24.2
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg   Duration: 00:00:05.31, start: 0.000000, bitrate: 1589 kb/s
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     Metadata:
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg       creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg       handler_name    : VideoHandler
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 384 kb/s (default)
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     Metadata:
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg       creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg       handler_name    : SoundHandler
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg Output #0, mp4, to '/storage/emulated/0/VideoTriming/20180212_172243SampleVideo_1280x720_1mb.mp4':
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg   Metadata:
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     major_brand     : isom
    
02-12 17:22:43.902 25335-25335/service D/FFmpeg: Started command : ffmpeg     minor_version   : 512
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     compatible_brands: isomiso2avc1mp41
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     encoder         : Lavf57.83.100
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc (default)
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     Metadata:
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg       creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg       handler_name    : VideoHandler
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 384 kb/s (default)
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg     Metadata:
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg       creation_time   : 1970-01-01T00:00:00.000000Z
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg       handler_name    : SoundHandler
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Stream mapping:
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg   Stream #0:0 -> #0:0 (copy)
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg   Stream #0:1 -> #0:1 (copy)
    
02-12 17:22:43.903 25335-25335/service D/FFmpeg: Started command : ffmpeg Press [q] to stop, [?] for help
    
02-12 17:22:43.910 25335-25335/service D/FFmpeg: Started command : ffmpeg frame=    0 fps=0.0 q=-1.0 Lsize=      46kB time=00:00:00.98 bitrate= 387.1kbits/s speed= 115x    
    
02-12 17:22:43.910 25335-25335/service D/FFmpeg: Started command : ffmpeg video:0kB audio:46kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.145508%

    My input file is the first 1MB mp4 sample video downloaded from following website :

    http://www.sample-videos.com/

  • Transcoding Live Audio Stream

    24 avril 2019, par Anjed

    I need to implement a scalable service (using C++|Go) to transcode incoming audio stream (via gRPC) to outgoing Linear16 (PCM) stream (via TCP)

    It seems that this could be done with ffmpeg and libav but I’m not sure how to do it, because output should be a stream rather than a file.

    Furthermore, the service will be exposed to over 1K requests per second therefore I need a solution for CPU-intensive multi-threaded environment.

    Incoming stream may be one of these :

    FLAC
    
AMR
    
MP2/3
    
OPUS
    
SPEEX
    
mu-law

  • How to reencode a h264 wiiU to a standard format video

    26 juin 2016, par didix16

    I’m trying to make a bridge between wiiU and web interface to view the video h264 signal. I’m not familiar with video programming but I’m searching some info about it. Following this documentation :

    It says that wiiU works with a H.264 variation. So since there is someone who made a h264decoder of wiiU in python (https: //github.com/justjake/drc-sim-keyboard/blob/master/H264Decoder.py) I’ll want to decode that kind of h264 and transform it to some kind of standard video for stream and get it over <video></video> tag on a html5 web page. It is possibly do it with ffmpeg libraries ?

    If it, can someone tell me how ? I’m programming the bridge in C++.

    Oh yes, at the moment I’m capturing the data from udp socket, so I just need transform the incoming data detailed in sc-vstrm.html documentation into some web stream video standard.

    Thank you so much guys :).

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