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  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Changer son thème graphique

    22 février 2011, par

    Le thème graphique ne touche pas à la disposition à proprement dite des éléments dans la page. Il ne fait que modifier l’apparence des éléments.
    Le placement peut être modifié effectivement, mais cette modification n’est que visuelle et non pas au niveau de la représentation sémantique de la page.
    Modifier le thème graphique utilisé
    Pour modifier le thème graphique utilisé, il est nécessaire que le plugin zen-garden soit activé sur le site.
    Il suffit ensuite de se rendre dans l’espace de configuration du (...)

Sur d’autres sites (10555)

  • Alias Artifacts

    26 avril 2013, par Multimedia Mike — General

    Throughout my own life, I have often observed that my own sense of nostalgia has a window that stretches about 10-15 years past from the current moment. Earlier this year, I discovered the show “Alias” and watched through the entire series thanks to Amazon Prime Instant Video (to be fair, I sort of skimmed the fifth and final season which I found to be horribly dull, or maybe franchise fatigue had set in). The show originally aired from 2001-2006 so I found that it fit well within the aforementioned nostalgia window.


    Alias (TV Series) logo

    But what was it, exactly, about the show that triggered nostalgia ? The computers, of course ! The show revolved around spies and espionage and cutting-edge technology necessarily played a role. The production designer for the series must have decided that Unix/Linux == awesome hacking and so many screenshots featured Linux.

    Since this is still nominally a multimedia blog, I’ll start of the screenshot recon with an old multimedia player. Here is a vintage Mac OS desktop running an ancient web browser (probably Netscape) that’s playing a full-window video (probably QuickTime embedded directly into the browser).


    Old Mac OS with old browser

    Click for larger image


    Let’s jump right into the Linux side of things. This screenshot makes me particularly sentimental since this is exactly what a stock Linux/KDE desktop looked like circa 2001-2003 and is more or less what I would have worked with on my home computer at the time :


    Alias: Linux/KDE desktop

    Click for larger image


    Studying that screenshot, we see that the user logs in as root, even to the desktop environment. Poor security practice ; I would expect better from a bunch of spooks.

    Echelon
    Look at the terminal output in the above screenshot– it’s building a program named Echelon, an omniscient spy tool inspired by a real-world surveillance network of the same name. In the show, Echelon is used to supply plot-convenient intelligence. At one point, some antagonists get their hands on the Echelon source code and seek to compile it. When they do, they will have access to the vast surveillance network. If you know anything about how computers work, don’t think about that too hard.

    Anyway, it’s interesting to note that Echelon is a properly autotool’d program– when the bad guys finally got Echelon, installation was just a ‘make install’ command away. The compilation was very user-friendly, though, as it would pop up a nice dialog box showing build progress :


    Alias: Compiling Echelon

    Click for larger image


    Examining the build lines in both that screenshot and the following lines, we can see that Echelon cares about files such as common/db_err.c and bt_curadj.c :


    Alias: Echelon used Berkeley DB

    Click for larger image


    A little googling reveals that these files both belong to the Berkeley DB library. That works ; I can imagine a program like this leveraging various database packages.

    Computer Languages
    The Echelon source code stuff comes from episode 2.11 : “A Higher Echelon”. While one faction had gotten a hold of the actual Echelon source code, a rival faction had abducted the show’s resident uber-nerd and, learning that they didn’t actually receive the Echelon code, force the nerd to re-write Echelon from scratch. Which he then proceeds to do…


    Alias: Rewriting Echelon

    Click for larger image


    The code he’s examining there appears to be C code that has something to do with joystick programming (JS_X_0, JS_Y_1, etc.). An eagle-eyed IMDb user contributed the trivia that he is looking at the file /usr/include/Linux/joystick.h.

    Getting back to the plot, how could the bad buys possibly expect him to re-write a hugely complex piece of software from scratch ? You might think this is the height of absurdity for a computer-oriented story. You’ll be pleased to know that the writers agreed with that assessment since, when the program was actually executed, it claimed to be Echelon, but that broke into a game of Pong (or some simple game). Suddenly, it makes perfect sense why the guy was looking at the joystick header file.

    This is the first bit of computer-oriented fun that I captured when I was watching the series :


    Alias: Java on the mainframe

    Click for larger image


    This printout purports to be a “mainframe log summary”. After some plot-advancing text about a security issue, it proceeds to dump out some Java source code.

    SSH
    Secure Shell (SSH) frequently showed up. Here’s a screenshot in which a verbose ‘ssh -v’ connection has just been closed, while a telnet command has apparently just been launched (evidenced by “Escape character is ‘^]’.”) :


    Alias: SSH/telnet

    Click for larger image


    This is followed by some good old Hollywood Hacking in which a free-form database command is entered through any available command line interface :


    Alias: Intuitive command line interface

    Click for larger image


    I don’t remember the episode details, but I’m pretty sure the output made perfect sense to the character typing the command. Here’s another screenshot where the SSH client pops up an extra-large GUI dialog element to notify the user that it’s currently negotiating with the host :


    Alias: SSH negotiation dialog

    Click for larger image


    Now that I look at that screenshot a little more closely, it appears to be a Win95/98 program. I wonder if there was an SSH client that actually popped up that gaudy dialog.

    There’s a lot of gibberish in this screenshot and I wish I had written down some details about what it represented according to the episode’s plot :


    Alias: Public key

    Click for larger image


    It almost sounds like they were trying to break into a network computer. Analyzing MD5 structure… public key synthesized. To me, the funniest feature is the 7-digit public key. I’m a bit rusty on the math of the RSA cryptosystem, but intuitively, it seems that the public and private keys need to be of roughly equal lengths. I.e., the private key in this scenario would also be 7 digits long.

    Gadgets
    Various devices and gadgets were seen at various junctures in the show. Here’s a tablet computer from back when tablet computers seemed like fantastical (albeit stylus-requiring) devices– the Fujitsu Stylistic 2300 :


    Alias: Fujitsu Stylistic 2300 tablet

    Click for larger image


    Here’s a videophone from an episode that aired in 2005. The specific model is the Packet8 DV326 (MSRP of US$500). As you can see from the screenshot, it can do 384 kbps both down and up.


    Alias: Packet8 DV326

    Click for larger image


    I really regret not writing down the episode details surrounding this gadget. I just know that it was critical that the good guys get it and keep from falling into the hands of the bad guys.


    Alias: Gadget using Samsung and Lexar chips

    Click for larger image


    As you can see, the (presumably) deadly device contains a Samsung chip and a Lexar chip. I have to wonder what device the production crew salvaged this from (probably just an old cell phone).

    Other Programs

    The GIMP photo editor makes an appearance while scrubbing security camera footage, and serves as the magical Enhance Button (at least they slung around the term “gamma”) :


    Alias: GIMP editor

    Click for larger image


    I have no idea what MacOS-based audio editing program this is. Any ideas ?


    Alias: Apple MacOS-based audio editor

    Click for larger image


    FTP shows up in episode 2.12, “The Getaway”. It’s described as a “secure channel” for communication, which is quite humorous to anyone versed in internet technology.


    Alias: FTP secure channel

    Click for larger image


  • FFMPEG atempo introducing phasing for multichannel mono audio tracks

    27 septembre 2021, par BrainNoWerk

    Is this a bug, or expected behaviour ? When converting materials from PAL to NTSC I invoke atempo as follows :

    


    -map 0:a:? -af atempo=24000/25025 ^
-c:a pcm_s24le


    


    I use this in a windows batch file (hence the caret) as a catch-all for all files that need to be converted, not having to deal with how many audio channels might be present or in what order.

    


    However, when my input was a broadcast MXF with 10channel mono audio (1 per stream) it introduced wild phasing between the tracks.

    


    Merging the tracks into a single stream to be processed by atempo resulted in no phasing.

    


    -filter_complex "[0:a:0][0:a:1][0:a:2][0:a:3][0:a:4][0:a:5][0:a:6][0:a:7][0:a:8][0:a:9] amerge=inputs=10, atempo=24000/25025[FRC]" ^
-map "[FRC]" -c:a pcm_s24le


    


    Is this expected behaviour ? I can't see any documentation detailing the need to first use amerge before invoking atempo.

    


    If indeed this step is necessary, is there a way to "wildcard" the amerge operation so that I don't have to manually enter all the audio channels, and then the "inputs=" ? This would allow me to make it more universal.

    


    This is my first question on stack overflow, so please be gentle. I've come here to find so many answers to my FFMPEG questions in the past—but this seems to be an edge case I can't get much detail on.

    


    Thanks !

    


    EDIT :

    


    This output using the wildcard produces phasing :

    


    C:\Windows>ffmpeg -ss 00:05:13.0 -r 24000/1001 -i "\\bdfs11\array21\Eps101_1920x1080_20_51_DV_CC_25fps_20210622.mov" -t 00:00:22.0 -map 0:v:0 -c:v mpeg2video -profile:v 0 -level:v 2 -b:v 50000k -minrate 50000k -maxrate 50000k -pix_fmt yuv422p -vtag xd5d -force_key_frames "expr:gte(t,n_forced*1)" -streamid 0:481 -streamid 1:129 -map 0:a:? -af atempo=24000/25025 -c:a pcm_s24le "R:\2_SERIES\%~n1_25to23976_works.%Container%" -y
ffmpeg version N-94566-gddd92ba2c6 Copyright (c) 2000-2019 the FFmpeg developers
      built with gcc 9.1.1 (GCC) 20190807
      configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
      libavutil      56. 33.100 / 56. 33.100
      libavcodec     58. 55.100 / 58. 55.100
      libavformat    58. 30.100 / 58. 30.100
      libavdevice    58.  9.100 / 58.  9.100
      libavfilter     7. 58.100 /  7. 58.100
      libswscale      5.  6.100 /  5.  6.100
      libswresample   3.  6.100 /  3.  6.100
      libpostproc    55.  6.100 / 55.  6.100
    [mov,mp4,m4a,3gp,3g2,mj2 @ 06ea4cc0] Could not find codec parameters for stream 12 (Subtitle: none (c708 / 0x38303763), 1920x1080, 21 kb/s): unknown codec
    Consider increasing the value for the 'analyzeduration' and 'probesize' options
    Guessed Channel Layout for Input Stream #0.2 : mono
    Guessed Channel Layout for Input Stream #0.3 : mono
    Guessed Channel Layout for Input Stream #0.4 : mono
    Guessed Channel Layout for Input Stream #0.5 : mono
    Guessed Channel Layout for Input Stream #0.6 : mono
    Guessed Channel Layout for Input Stream #0.7 : mono
    Guessed Channel Layout for Input Stream #0.8 : mono
    Guessed Channel Layout for Input Stream #0.9 : mono
    Guessed Channel Layout for Input Stream #0.10 : mono
    Guessed Channel Layout for Input Stream #0.11 : mono
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\\bdfs11\array21\Eps101_1920x1080_20_51_DV_CC_25fps_20210622.mov':
      Metadata:
        major_brand     : qt
        minor_version   : 537199360
        compatible_brands: qt
        creation_time   : 2021-06-22T17:39:50.000000Z
      Duration: 00:59:08.16, start: 0.000000, bitrate: 217983 kb/s
        Stream #0:0(eng): Video: prores (HQ) (apch / 0x68637061), yuv422p10le(tv, bt709, progressive), 1920x1080, 206438 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Video Media Handler
          encoder         : Apple ProRes 422 HQ
          timecode        : 00:59:59:00
        Stream #0:1(eng): Data: none (tmcd / 0x64636D74) (default)
        Metadata:
          rotate          : 0
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Time Code Media Handler
          reel_name       : untitled
          timecode        : 00:59:59:00
        Stream #0:2(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:3(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:4(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:5(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:6(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:7(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:8(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:9(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:10(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:11(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
        Stream #0:12(eng): Subtitle: none (c708 / 0x38303763), 1920x1080, 21 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Closed Caption Media Handler
    Stream mapping:
      Stream #0:0 -> #0:0 (prores (native) -> mpeg2video (native))
      Stream #0:2 -> #0:1 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:3 -> #0:2 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:4 -> #0:3 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:5 -> #0:4 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:6 -> #0:5 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:7 -> #0:6 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:8 -> #0:7 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:9 -> #0:8 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:10 -> #0:9 (pcm_s24le (native) -> pcm_s24le (native))
      Stream #0:11 -> #0:10 (pcm_s24le (native) -> pcm_s24le (native))
    Press [q] to stop, [?] for help
    [mpeg2video @ 06f8aa40] Automatically choosing VBV buffer size of 746 kbyte
    Output #0, mxf, to 'R:\2_SERIES\Eps101_1920x1080_20_51_DV_CC_25fps_20210622_25to23976_works.mxf':
      Metadata:
        major_brand     : qt
        minor_version   : 537199360
        compatible_brands: qt
        encoder         : Lavf58.30.100
        Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5d / 0x64356478), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 50000 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Video Media Handler
          timecode        : 00:59:59:00
          encoder         : Lavc58.55.100 mpeg2video
        Side data:
          cpb: bitrate max/min/avg: 50000000/50000000/50000000 buffer size: 6111232 vbv_delay: 18446744073709551615
        Stream #0:1(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:2(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:3(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:4(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:5(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:6(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:7(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:8(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:9(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
        Stream #0:10(eng): Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
        Metadata:
          creation_time   : 2021-06-22T17:39:50.000000Z
          handler_name    : Apple Sound Media Handler
          encoder         : Lavc58.55.100 pcm_s24le
    frame=  527 fps= 52 q=2.0 Lsize=  166106kB time=00:00:22.00 bitrate=61851.7kbits/s speed=2.19x
    video:133971kB audio:30938kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.726204%


    


    This is the output that produces no phasing

    


    C:\Windows>ffmpeg -ss 00:05:13.0 -r 24000/1001 -i "\\bdfs11\array21\Eps101_1920x1080_20_51_DV_CC_25fps_20210622.mov" -t 00:00:22.0 -map 0:v:0 -c:v mpeg2video -profile:v 0 -level:v 2 -b:v 50000k -minrate 50000k -maxrate 50000k -pix_fmt yuv422p -vtag xd5d -force_key_frames "expr:gte(t,n_forced*1)" -streamid 0:481 -streamid 1:129 -filter_complex "[0:a:0][0:a:1][0:a:2][0:a:3][0:a:4][0:a:5][0:a:6][0:a:7][0:a:8][0:a:9] amerge=inputs=10, atempo=24000/25025[FRC]" -map "[FRC]" -c:a pcm_s24le "R:\2_SERIES\Eps101_1920x1080_20_51_DV_CC_25fps_20210622_25to23976_works.mxf" -y
ffmpeg version N-94566-gddd92ba2c6 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.1.1 (GCC) 20190807
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 33.100 / 56. 33.100
  libavcodec     58. 55.100 / 58. 55.100
  libavformat    58. 30.100 / 58. 30.100
  libavdevice    58.  9.100 / 58.  9.100
  libavfilter     7. 58.100 /  7. 58.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 064f5580] Could not find codec parameters for stream 12 (Subtitle: none (c708 / 0x38303763), 1920x1080, 21 kb/s): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for Input Stream #0.2 : mono
Guessed Channel Layout for Input Stream #0.3 : mono
Guessed Channel Layout for Input Stream #0.4 : mono
Guessed Channel Layout for Input Stream #0.5 : mono
Guessed Channel Layout for Input Stream #0.6 : mono
Guessed Channel Layout for Input Stream #0.7 : mono
Guessed Channel Layout for Input Stream #0.8 : mono
Guessed Channel Layout for Input Stream #0.9 : mono
Guessed Channel Layout for Input Stream #0.10 : mono
Guessed Channel Layout for Input Stream #0.11 : mono
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '\\bdfs11\array21\Eps101_1920x1080_20_51_DV_CC_25fps_20210622.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2021-06-22T17:39:50.000000Z
  Duration: 00:59:08.16, start: 0.000000, bitrate: 217983 kb/s
    Stream #0:0(eng): Video: prores (HQ) (apch / 0x68637061), yuv422p10le(tv, bt709, progressive), 1920x1080, 206438 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Video Media Handler
      encoder         : Apple ProRes 422 HQ
      timecode        : 00:59:59:00
    Stream #0:1(eng): Data: none (tmcd / 0x64636D74) (default)
    Metadata:
      rotate          : 0
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Time Code Media Handler
      reel_name       : untitled
      timecode        : 00:59:59:00
    Stream #0:2(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:3(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:4(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:5(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:6(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:7(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:8(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:9(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:10(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:11(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:12(eng): Subtitle: none (c708 / 0x38303763), 1920x1080, 21 kb/s (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Closed Caption Media Handler
Stream mapping:
  Stream #0:2 (pcm_s24le) -> amerge:in0 (graph 0)
  Stream #0:3 (pcm_s24le) -> amerge:in1 (graph 0)
  Stream #0:4 (pcm_s24le) -> amerge:in2 (graph 0)
  Stream #0:5 (pcm_s24le) -> amerge:in3 (graph 0)
  Stream #0:6 (pcm_s24le) -> amerge:in4 (graph 0)
  Stream #0:7 (pcm_s24le) -> amerge:in5 (graph 0)
  Stream #0:8 (pcm_s24le) -> amerge:in6 (graph 0)
  Stream #0:9 (pcm_s24le) -> amerge:in7 (graph 0)
  Stream #0:10 (pcm_s24le) -> amerge:in8 (graph 0)
  Stream #0:11 (pcm_s24le) -> amerge:in9 (graph 0)
  Stream #0:0 -> #0:0 (prores (native) -> mpeg2video (native))
  atempo (graph 0) -> Stream #0:1 (pcm_s24le)
Press [q] to stop, [?] for help
[Parsed_amerge_0 @ 06e18dc0] No channel layout for input 1
[Parsed_amerge_0 @ 06e18dc0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
[mpeg2video @ 06dea000] Automatically choosing VBV buffer size of 746 kbyte
Output #0, mxf, to 'R:\2_SERIES\Eps101_1920x1080_20_51_DV_CC_25fps_20210622_25to23976_works.mxf':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    encoder         : Lavf58.30.100
    Stream #0:0(eng): Video: mpeg2video (4:2:2) (xd5d / 0x64356478), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 50000 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
    Metadata:
      creation_time   : 2021-06-22T17:39:50.000000Z
      handler_name    : Apple Video Media Handler
      timecode        : 00:59:59:00
      encoder         : Lavc58.55.100 mpeg2video
    Side data:
      cpb: bitrate max/min/avg: 50000000/50000000/50000000 buffer size: 6111232 vbv_delay: 18446744073709551615
    Stream #0:1: Audio: pcm_s24le, 48000 Hz, 10 channels (FL+FR+FC+LFE+BL+BR+FLC+FRC+BC+SL), s32, 11520 kb/s (default)
    Metadata:
      encoder         : Lavc58.55.100 pcm_s24le
frame=  527 fps= 61 q=2.0 Lsize=  165571kB time=00:00:22.00 bitrate=61652.6kbits/s speed=2.56x
video:133971kB audio:30938kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.402084%


    


    Let me know if you need more detail than what I've provided.

    


    Tangential questions related to this job and potentially not worth their own thread, even though I've looked extensively and not found the answers (happy to post them individually if that's necessary) :

    


      


    1. I can't seem to split any portion of the filter_complex above with a caret (^) within a windows batch file (no number of spaces before or after resolve this issue). It breaks the chain and the filter graphs complain of no input.

      


      2. 


    2. Is FFMBC still the only way to include broadcast closed captioning ? This functionality doesn't exist within FFMPEG ?

      


      3. 


    


  • Is this a problem in my command, the stream, or FFMPEG itself ?

    10 juin, par Ali Mustafa

    I am trying to download a section from approximately 06:40:00 to 06:44:00 from this stream : https://kick.com/grossgore/videos/8d36c089-ff2b-4167-9c92-bc8a3a9d033b

    


    I found the m3u8 URL : https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8

    


    I run the following command :

    


    ffmpeg -ss 06:40:00 -to 06:44:00 -i https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8 -c copy out.mp4


    


    The command runs for a while, but for some reason the output file is empty once the program has finished. How do I figure out what the problem is ?

    


    Log :

    


    ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  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
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
[hls @ 0x633e19ea3200] Skip ('#EXT-X-VERSION:3')
[hls @ 0x633e19ea3200] Skip ('#ID3-EQUIV-TDTG:2025-05-25T21:04:39')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-TWITCH-ELAPSED-SECS:0.000')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-TWITCH-TOTAL-SECS:29231.935')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T12:56:26.675Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T12:56:39.175Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T12:56:51.675Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T12:57:04.175Z')
...
...
...
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T17:38:43.058Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T17:38:55.558Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-DISCONTINUITY')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-TWITCH-DISCONTINUITY')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T17:39:56.883Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T17:40:09.383Z')
...
...
...
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T21:04:17.516Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T21:04:30.016Z')
[hls @ 0x633e19ea3200] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/0.ts' for reading
[hls @ 0x633e19ea3200] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1.ts' for reading
Input #0, hls, from 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8':
  Duration: 08:07:11.94, start: 64.171000, bitrate: 0 kb/s
  Program 0 
    Metadata:
      variant_bitrate : 0
  Stream #0:0: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 0
  Stream #0:1: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 60 tbr, 90k tbn, 120 tbc
    Metadata:
      variant_bitrate : 0
  Stream #0:2: Data: timed_id3 (ID3  / 0x20334449)
    Metadata:
      variant_bitrate : 0
Output #0, mp4, to 'out.mp4':
  Metadata:
    encoder         : Lavf58.76.100
  Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 60 tbr, 90k tbn, 90k tbc
    Metadata:
      variant_bitrate : 0
  Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 0
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[hls @ 0x633e19ea3200] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1921.ts' for reading
[hls @ 0x633e19ea3200] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1922.ts' for reading
[https @ 0x633e1a43f9c0] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1923.ts' for reading
[https @ 0x633e1a877300] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1924.ts' for reading
[https @ 0x633e1a43f9c0] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1925.ts' for reading
[https @ 0x633e1a877300] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1926.ts' for reading
...
...
...
[https @ 0x633e1a877300] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/2338.ts' for reading
[https @ 0x633e1a43f9c0] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/2339.ts' for reading
[https @ 0x633e1a877300] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/2340.ts' for reading
frame=    0 fps=0.0 q=-1.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


    


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