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Autres articles (48)

  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • 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 (...)

Sur d’autres sites (8441)

  • ffmpeg weird x264 encoding behavior

    1er février 2016, par JMor

    I have a captured a 720x480 video with a display aspect ratio of 16:9 which I want to crop, resize and pad, but just the x264 encoding command is giving me a headache.

    (Screenshot of input.m2v) Here is my command :

    ffmpeg -ss 1861 -i input.m2v -c:v libx264 -profile:v main -preset:v medium -level 3.1 -x264opts crf=21.228 -t 60 -y -f mp4 output.mp4

    And here is the ffmpeg output :

    (Screen shot of output.mp4)

    Input #0, mpegvideo, from 'input.m2v':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: mpeg2video (Main), yuv420p(tv), 720x480 [SAR 32:27 DAR 1
    
6:9], max. 6605 kb/s, 31.02 fps, 59.94 tbr, 1200k tbn, 59.94 tbc
    
[libx264 @ 02ba84c0] using SAR=32/27
    
[libx264 @ 02ba84c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 02ba84c0] profile Main, level 3.1
    
[libx264 @ 02ba84c0] 264 - core 144 r2525 40bb568 - H.264/MPEG-4 AVC codec - Cop
    
yleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
    
lock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
    
e_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chro
    
ma_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 scene
    
cut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=21.2 qcomp=0.60 qpmin
    
=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    encoder         : Lavf56.19.100
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x48
    
0 [SAR 32:27 DAR 16:9], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc
    
    Metadata:
    
      encoder         : Lavc56.21.102 libx264
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))

    The output size is 720x480, displayed as 853x480, as expected.
    But it looks like the frame has been vertically scaled by a factor of 1.18 and then cropped to a height of 480, so that I am losing the top and bottom of the frame. In fact, the behavior is equivalent to :

    -vf "scale=720:569,crop=720:480:0:0"

    Although I assume the aspect ratio plays a part here (I think the 1.18 factor is really (16/9)/(720/480)) I am surprised that ffmpeg would do that out of the blue. May be someone more knowledgeable than me could explain it ?

  • whether it takes long time for convert flv to MP4 using ffmpeg from server

    29 décembre 2016, par Firman Firdaus

    I want to convert a flv file to mp4. I use with a basic command like this :

    ffmpeg -i /var/www/html/rawmedia/d2cb9f152f27d9beb4a15d61e177fa22.flv /var/www/html/media/new.mp4

    The command above has result 0 B mp4.
    I read for My reference for this in this link,
    there is a very simple and basic I think.
    So I try the command above for testing php vibe command like this :

    ffmpeg -i /var/www/html/rawmedia/d2cb9f152f27d9beb4a15d61e177fa22.flv -vcodec libx264 -s 640x360 -threads 4 -movflags faststart /var/www/html/media/test4.mp4

    I got that command from PHPVIBE for convert other format file except mp4.
    So I got a result just the same as like first command that still 0 B mp4.
    But the Output of the second command give me like this

    Incompatible sample format 's16' for codec 'aac', auto-selecting format 'flt'
    
[libx264 @ 0xcebde0] using cpu capabilities: none!
    
[libx264 @ 0xcebde0] profile High, level 3.0
    
[libx264 @ 0xcebde0] 264 - core 120 r2151 a3f4407 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - 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=4 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
    
[NULL @ 0xd5f1a0] Codec is experimental but experimental codecs are not enabled, see -strict -2
    
Output #0, mp4, to '/var/www/html/media/test4.mp4':
    
  Metadata:
    
    starttime       : 0
    
    totalduration   : 57
    
    totaldatarate   : 353
    
    bytelength      : 2535814
    
    canseekontime   : true
    
    sourcedata      : B0AFCE7F5HH1428394559963956
    
    purl            :
    
    pmsg            :
    
    Stream #0:0: Video: h264, yuv420p, 640x360, q=-1--1, 90k tbn, 30 tbc
    
    Stream #0:1: Audio: none, 22050 Hz, stereo, flt, 128 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (flv -> libx264)
    
  Stream #0:1 -> #0:1 (mp3 -> aac)
    
Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height

    Output give me some information that test.mp4 have bytelength      : 2535814.
    But I still have 0B mp4 converted result until now. Is there taking a time or I was wrong with the command. But especially my first command very basic and still get zero byte result.

  • Python - playing video using ffplay displays file in larger resolution

    10 décembre 2019, par derBrain

    I’m working on a simple script that plays a video using ffplay.
    The problem I’m running into is that the output file has a larger resolution than it should have.
    The resolution of the file to be played is 1280x720, however, when I open the file with ffplay, the output is scaled to 1920x1080.
    I even tried to downscale the output by factor 1.5 (to get it to play in 1280x720), but the quality is noticeably worse compared to playing the same file in VLC player.
    What am I missing here ?

    This is the code I’m using :

    dbFile = "file.mp4"
    
open_dbFile = "ffplay {0} -window_title {1} -left 50 -top 50 -nostats".format(dbFile, "DB_file")
    
sub.Popen(open_dbFile)

    this is the log :

    ffplay version N-95171-g6ca3d34ff8 Copyright (c) 2003-2019 the FFmpeg developers
    
  built with gcc 9.2.1 (GCC) 20190918
    

    
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-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
    
  libavutil      56. 35.100 / 56. 35.100
    
  libavcodec     58. 59.101 / 58. 59.101
    
  libavformat    58. 33.100 / 58. 33.100
    
  libavdevice    58.  9.100 / 58.  9.100
    
  libavfilter     7. 59.100 /  7. 59.100
    
  libswscale      5.  6.100 /  5.  6.100
    
  libswresample   3.  6.100 /  3.  6.100
    
  libpostproc    55.  6.100 / 55.  6.100
    

    
Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2017-12-24T15:03:27.000000Z
    
  Duration: 00:08:36.83, start: 0.000000, bitrate: 588 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 459 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
    
    Metadata:
    
      creation_time   : 2017-12-24T15:03:27.000000Z
    
      handler_name    : ISO Media file produced by Google Inc. Created on: 12/24/2017.
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
    
    Metadata:
    
      creation_time   : 2017-12-24T15:03:27.000000Z
    
      handler_name    : ISO Media file produced by Google Inc. Created on: 12/24/2017.
    
   1.59 A-V: -0.014 fd=   0 aq=   19KB vq=   30KB sq=    0B f=0/0

    Thanks for your help !
    db

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