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  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Configuration spécifique d’Apache

    4 février 2011, par

    Modules spécifiques
    Pour la configuration d’Apache, il est conseillé d’activer certains modules non spécifiques à MediaSPIP, mais permettant d’améliorer les performances : mod_deflate et mod_headers pour compresser automatiquement via Apache les pages. Cf ce tutoriel ; mode_expires pour gérer correctement l’expiration des hits. Cf ce tutoriel ;
    Il est également conseillé d’ajouter la prise en charge par apache du mime-type pour les fichiers WebM comme indiqué dans ce tutoriel.
    Création d’un (...)

Sur d’autres sites (8365)

  • SVT-AV1 Vertical 4k video

    14 avril 2020, par Dmitry Maksakov

    I have a vertical 4k video captured on my phone with the following parameters (ffprobe) :

    



    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709/bt709/smpte170m), 3840x2160, 71980 kb/s, SAR 1:1 DAR 16:9, 59.96 fps, 60 tbr, 90k tbn, 180k tbc (default)
Metadata:
  rotate          : 90
  creation_time   : 2020-04-03T17:17:11.000000Z
  handler_name    : VideoHandle
Side data:
  displaymatrix: rotation of -90.00 degrees


    



    When I try to transcode it to av1 with svt_av1

    



    ffmpeg -i video.mp4 -c:v libsvt_av1 -y output.webm


    



    I am getting

    



    Error instance 1: Source Height must be less than 2160
[libsvt_av1 @ 0x5614a858c400] Error setting encoder parameters: bad parameter (0x80001005)
Segmentation fault


    



    How could I encode such videos ?

    


  • Picking the right gpu for ffmpeg decoding/encoding with nvidia/cuda

    14 avril 2020, par Reza Mir

    I am writing code using ffmpeg/nvidia/cuda library to decode and encode some video. I am trying to pick one specific GPU for decoding/encoding among some existing GPUs installed on the system. Here is the list of existing GPUs :

    



     nvidia-smi 
Tue Apr 14 00:14:59 2020       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 440.64.00    Driver Version: 440.64.00    CUDA Version: 10.2     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce RTX 208...  On   | 00000000:1A:00.0 Off |                  N/A |
| 41%   33C    P8    20W / 260W |      0MiB / 11019MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   1  GeForce GTX 108...  On   | 00000000:1B:00.0 Off |                  N/A |
| 41%   65C    P2   182W / 250W |   7167MiB / 11178MiB |     53%      Default |
+-------------------------------+----------------------+----------------------+
|   2  GeForce GTX 108...  On   | 00000000:1E:00.0 Off |                  N/A |
| 14%   55C    P2    61W / 250W |   1943MiB / 11178MiB |     26%      Default |
+-------------------------------+----------------------+----------------------+
|   3  Quadro P5000        On   | 00000000:3D:00.0 Off |                  Off |
| 26%   33C    P8     6W / 180W |      1MiB / 16278MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   4  TITAN RTX           On   | 00000000:3E:00.0 Off |                  N/A |
| 41%   38C    P0    72W / 280W |      0MiB / 24220MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   5  TITAN RTX           On   | 00000000:41:00.0 Off |                  N/A |
| 40%   32C    P8    14W / 280W |      0MiB / 24220MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+



    



    I would like to pick GPU #3 in my code and use it for decoding. I am using h264_nvenc and h264_cuvid as encoder and decoder in my program and setting the options of decoder/encoder using the following code :

    



    av_opt_set(decoder_context->priv_data, "gpu", "Quadro P5000", 0);


    



    But this code doesn't pick Quadro GPU for decoding/encoding. Instead, it always goes to GPU #4 in my test :

    



    nvidia-smi pmon | grep tx
    4      20096     C    22     3    44    16   tx            
    4      20096     C    26     4    49    17   tx            
    4      20096     C    25     4    49    17   tx     


    


  • Failing to push mpeg dash segment to webdav server using method PUT

    18 avril 2020, par Safwan Sada

    I am trying to push mpeg dash segments to webdav server.

    



    Here is the command :

    



    ffmpeg -loglevel verbose -re -i /home/SAFWAN/URI.mp4 -codec copy -sc_threshold 0 -b_strategy 0 -use_timeline 0 -use_template 1 -window_size 10 -init_seg_name init-$RepresentationID$.mp4 -strict -2 -f dash -segment_list_flags +live -min_seg_duration 2000000 -method PUT http://192.168.22.112/webdav/SAFWAN5/manifest.mpd

    



    But I am able to push hls segments using sample ffmpeg command :
ffmpeg -loglevel verbose -re -i /home/SAFWAN/URI.mp4 -codec copy -method PUT -f hls http://192.168.22.112/webdav/SAFWAN5/master.m3u8

    



    Here is the apache2 access log :
183.82.0.170 - - [18/Apr/2020:10:32:28 -0400] "POST /webdav/SAFWAN5/manifest.mpd HTTP/1.1" 200 292 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:38 -0400] "POST /webdav/SAFWAN5/chunk-stream0-00004.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:38 -0400] "POST /webdav/SAFWAN5/chunk-stream1-00004.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:39 -0400] "POST /webdav/SAFWAN5/manifest.mpd HTTP/1.1" 200 292 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:48 -0400] "POST /webdav/SAFWAN5/chunk-stream0-00005.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:48 -0400] "POST /webdav/SAFWAN5/chunk-stream1-00005.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:49 -0400] "POST /webdav/SAFWAN5/manifest.mpd HTTP/1.1" 200 292 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:53 -0400] "POST /webdav/SAFWAN5/chunk-stream0-00006.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:53 -0400] "POST /webdav/SAFWAN5/chunk-stream1-00006.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:53 -0400] "POST /webdav/SAFWAN5/manifest.mpd HTTP/1.1" 200 292 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:57 -0400] "POST /webdav/SAFWAN5/chunk-stream0-00007.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:57 -0400] "POST /webdav/SAFWAN5/chunk-stream1-00007.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:32:57 -0400] "POST /webdav/SAFWAN5/manifest.mpd HTTP/1.1" 200 292 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:33:00 -0400] "POST /webdav/SAFWAN5/chunk-stream0-00008.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:33:00 -0400] "POST /webdav/SAFWAN5/chunk-stream1-00008.m4s HTTP/1.1" 404 498 "-" "Lavf/57.83.100"
183.82.0.170 - - [18/Apr/2020:10:33:01 -0400] "POST /webdav/SAFWAN5/manifest.mpd HTTP/1.1" 200 292 "-" "Lavf/57.83.100"

    



    Please let me know why the dash segments is failing to push to webdav server ?

    


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