Recherche avancée

Médias (91)

Autres articles (37)

  • 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 (...)

  • 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 (...)

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (4450)

  • "Moov Atom not Found " while converting .m4a into .mp3 audio file ?

    22 juillet 2021, par Comrade Shiva

    when i was converting iphone Audio recording .m4a file into .mp3 format at that time i got error "Moov Atom not found" showing on the screen,,,,
so i tried to check this error on internet ,found that some ffmpeg commands and recover_mp4's commands but same error showing on the screen ,,,,
it may be my Audio file was damaged so any solution to recover the audio file ,,,,,
recover_mp4.exe showing some commands and claiming to recover file but in my lappy its not workable When ffmpeg is used
when recover_mp4 is used

    


  • Convert a video with content type video/quicktime to video/mp4 using ffmpeg

    25 juin 2021, par schub

    I have a strange problem. I start with a video file recored with an iPhone. The output is video.mov. I convert this to mp4 using ffmpeg :

    


    ffmpeg -i video.mov -vcodec h264 -acodec aac video.mp4

    


    If I use a tool like exiftool to show the metadata the output for content-type is video/mp4 all seems to be correct. But my backend, which receives the video, uses a library called Apache Tika to extract the content type and the result here is : video/quicktime.

    


    Scala code to retrieve the content type from the file :

    


    // byteArray: Array[Byte]

val tika        = new TikaConfig()
val metadata    = new Metadata()
val contentType = tika.getDetector.detect(TikaInputStream.get(byteArray), metadata)


    


    BTW : If I use a video editing program (DaVinci Resolve in my case) I can load the video, adjust settings and explicitly set the codec to mp4, export the video and then the resulting file works and Apache Tika extract the desired content-type. This is a workaround, but it does not scale and I like to automate this process via ffmpeg.

    


    I'm stuck here. Can anyone give me a hint what I can do ?

    


    Versions :

    


    tika : 1.22
    
ffmpeg : 4.4

    


    ffmpeg log :

    


    $ffmpeg -i video.mov -vcodec h264 -acodec aac video.mp4
ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4_2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    creation_time   : 2021-06-24T11:19:37.000000Z
    com.apple.quicktime.location.accuracy.horizontal: 65.000000
    com.apple.quicktime.location.ISO6709: +52.5554+013.3772+042.268/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 8
    com.apple.quicktime.software: 14.4.2
    com.apple.quicktime.creationdate: 2021-06-24T13:19:36+0200
  Duration: 00:00:09.83, start: 0.000000, bitrate: 7954 kb/s
  Stream #0:0(und): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, bt709), 1920x1080, 7810 kb/s, 30.01 fps, 30 tbr, 600 tbn, 600 tbc (default)
    Metadata:
      rotate          : 90
      creation_time   : 2021-06-24T11:19:37.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : HEVC
    Side data:
      displaymatrix: rotation of -90.00 degrees
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 96 kb/s (default)
    Metadata:
      creation_time   : 2021-06-24T11:19:37.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
  Stream #0:2(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-06-24T11:19:37.000000Z
      handler_name    : Core Media Metadata
  Stream #0:3(und): Data: none (mebx / 0x7862656D), 0 kb/s (default)
    Metadata:
      creation_time   : 2021-06-24T11:19:37.000000Z
      handler_name    : Core Media Metadata
  Stream #0:4(und): Data: none (mebx / 0x7862656D), 34 kb/s (default)
    Metadata:
      creation_time   : 2021-06-24T11:19:37.000000Z
      handler_name    : Core Media Metadata
Stream mapping:
  Stream #0:0 -> #0:0 (hevc (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fbe08009400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7fbe08009400] profile High, level 4.0, 4:2:0, 8-bit
[libx264 @ 0x7fbe08009400] 264 - core 163 r3060 5db6aa6 - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'video.mp4':
  Metadata:
    major_brand     : qt
    minor_version   : 0
    compatible_brands: qt
    com.apple.quicktime.creationdate: 2021-06-24T13:19:36+0200
    com.apple.quicktime.location.accuracy.horizontal: 65.000000
    com.apple.quicktime.location.ISO6709: +52.5554+013.3772+042.268/
    com.apple.quicktime.make: Apple
    com.apple.quicktime.model: iPhone 8
    com.apple.quicktime.software: 14.4.2
    encoder         : Lavf58.76.100
  Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1080x1920, q=2-31, 30 fps, 15360 tbn (default)
    Metadata:
      encoder         : Lavc58.134.100 libx264
      creation_time   : 2021-06-24T11:19:37.000000Z
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
      displaymatrix: rotation of -0.00 degrees
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      creation_time   : 2021-06-24T11:19:37.000000Z
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.134.100 aac
frame=  295 fps= 18 q=-1.0 Lsize=    9980kB time=00:00:09.82 bitrate=8323.6kbits/s speed=0.614x
video:9884kB audio:85kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.103401%
[libx264 @ 0x7fbe08009400] frame I:6     Avg QP:21.84  size: 50301
[libx264 @ 0x7fbe08009400] frame P:217   Avg QP:24.23  size: 35435
[libx264 @ 0x7fbe08009400] frame B:72    Avg QP:24.97  size: 29582
[libx264 @ 0x7fbe08009400] consecutive B-frames: 66.8%  0.7%  4.1% 28.5%
[libx264 @ 0x7fbe08009400] mb I  I16..4:  6.7% 88.9%  4.4%
[libx264 @ 0x7fbe08009400] mb P  I16..4:  4.2% 32.9%  0.5%  P16..4: 49.6%  5.0%  2.3%  0.0%  0.0%    skip: 5.5%
[libx264 @ 0x7fbe08009400] mb B  I16..4:  0.9%  6.9%  0.0%  B16..8: 51.8%  7.7%  0.8%  direct:12.2%  skip:19.6%  L0:50.1% L1:46.9% BI: 3.0%
[libx264 @ 0x7fbe08009400] 8x8 transform intra:87.7% inter:88.8%
[libx264 @ 0x7fbe08009400] coded y,uvDC,uvAC intra: 59.2% 41.2% 0.9% inter: 38.3% 57.3% 0.0%
[libx264 @ 0x7fbe08009400] i16 v,h,dc,p: 15% 23%  8% 53%
[libx264 @ 0x7fbe08009400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 14% 29%  7%  8%  7%  7%  6%  6%
[libx264 @ 0x7fbe08009400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 18% 18%  9% 11%  7%  7%  4%  3%
[libx264 @ 0x7fbe08009400] i8c dc,h,v,p: 60% 20% 18%  1%
[libx264 @ 0x7fbe08009400] Weighted P-Frames: Y:3.2% UV:2.3%
[libx264 @ 0x7fbe08009400] ref P L0: 54.2% 10.7% 22.2% 12.5%  0.4%
[libx264 @ 0x7fbe08009400] ref B L0: 75.5% 19.6%  4.9%
[libx264 @ 0x7fbe08009400] ref B L1: 88.7% 11.3%
[libx264 @ 0x7fbe08009400] kb/s:8234.01
[aac @ 0x7fbe0802e000] Qavg: 446.889


    


  • FFMpeg - Segment audio to chunks

    8 mars 2015, par fr3sh

    I have tried this example in order to segment a given video file using ffmpeg into an m3u8 file and smaller chunks (.ts files). This actually worked great. Is it possible to do practically the same thing with audio input ?
    This was my most promising approach so far (capturing live audio on Windows OS) :

    ffmpeg -f dshow -i audio="<name of="of" input="input" device="device">" -acodec libmp3lame -ab 64000 | segmenter - 10 stream stream.m3u8 http:///stream/stream/ 5 1
    
</name>

    But this returns this error :

    At least one output file must be specified.
    
Could not open input file, make sure it is an mpegts file: -1

    I really would not know how to convert the live audio stream to an mpegts file.
    Could anyone please give me a hint ?

    Thanks a lot

Navigation