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  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

  • 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 (...)

  • Possibilité de déploiement en ferme

    12 avril 2011, par

    MediaSPIP peut être installé comme une ferme, avec un seul "noyau" hébergé sur un serveur dédié et utilisé par une multitude de sites différents.
    Cela permet, par exemple : de pouvoir partager les frais de mise en œuvre entre plusieurs projets / individus ; de pouvoir déployer rapidement une multitude de sites uniques ; d’éviter d’avoir à mettre l’ensemble des créations dans un fourre-tout numérique comme c’est le cas pour les grandes plate-formes tout public disséminées sur le (...)

Sur d’autres sites (10172)

  • Compile ffmpeg with librtmp

    22 avril 2013, par HighFlyingFantasy

    When compiling ffmpeg for OSX, I can simply use the :

    ./configure --enable-librtmp --enable-gpl

    command and get a build that can I/O with an rtmp stream.

    If I attempt to compile for iOS using :

    ./configure \
    
--disable-ffmpeg \
    
--disable-ffplay \
    
--disable-ffprobe \
    
--disable-ffserver \
    
--disable-mmx \
    
--enable-gpl \
    
--enable-shared \
    
--enable-librtmp \
    
--enable-avresample \
    
--enable-cross-compile \
    
--enable-pic \
    
--sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs /iPhoneOS6.1.sdk" \
    
--target-os=darwin \
    
--cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2" \
    
--extra-cflags="-arch armv7s -mfpu=neon -miphoneos-version-min=6.1" \
    
--extra-ldflags="-arch armv7s -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk -miphoneos-version-min=6.1" \
    
--arch=arm \
    
--cpu=cortex-a9 \
    
--prefix=compiled/armv7s

    it errors out saying ERROR: librtmp cannot be found. Specifically :

        /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2 -arch armv7s -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk -miphoneos-version-min=6.1 --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk -Wl,-dynamic,-search_paths_first -I/usr/local/include -L/usr/local/lib -o /var/folders/4m/8hcrycqx777_ksz6d32nrn_m0000gp/T//ffconf.b2zp97z8 /var/folders/4m/8hcrycqx777_ksz6d32nrn_m0000gp/T//ffconf.VhdlpSe1.o -lrtmp -lz -lssl -lcrypto -lm -lbz2 -lz
    
ld: warning: ld: warning: ignoring file /usr/local/lib/librtmp.dylib, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 6 0x 0 0x 0 0x 0 ) which is not the architecture being linked (armv7s): /usr/local/lib/librtmp.dylibignoring file /usr/local/lib/libz.a, file was built for archive which is not the architecture being linked (armv7s): /usr/local/lib/libz.a
    

    
Undefined symbols for architecture armv7s:
    
  "_RTMP_Socket", referenced from:
    
      _check_RTMP_Socket in ffconf.VhdlpSe1.o
    
     (maybe you meant: _check_RTMP_Socket)
    
ld: symbol(s) not found for architecture armv7s
    
collect2: ld returned 1 exit status
    
ERROR: librtmp not found

    I have already compiled openssl for ios using ios-openssl found on github and librtmp through rtmpdump

  • 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

  • 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/

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