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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
Autres articles (84)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...) -
Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)
Sur d’autres sites (9524)
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SVT-AV1 Vertical 4k video
14 avril 2020, par Dmitry MaksakovI 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 ?


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Picking the right gpu for ffmpeg decoding/encoding with nvidia/cuda
14 avril 2020, par Reza MirI 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 


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Failing to push mpeg dash segment to webdav server using method PUT
18 avril 2020, par Safwan SadaI 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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