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Médias (91)
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#3 The Safest Place
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#4 Emo Creates
15 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#2 Typewriter Dance
15 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#1 The Wires
11 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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ED-ME-5 1-DVD
11 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Audio
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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (64)
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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 (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ; -
Menus personnalisés
14 novembre 2010, parMediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
Menus créés à l’initialisation du site
Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...)
Sur d’autres sites (6271)
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Building FFmpeg with NVIDIA GPU Hardware Acceleration in docker image, cannot load libnvcuvid.so.1 and libnvidia-encode.so.1
22 mars 2023, par konovificationI'm trying to build FFmpeg with NVIDIA GPU Hardware Acceleration following these instructions : https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/index.html#compiling-for-linux. The Docker image I'm using is
nvidia/cuda:12.0.1-devel-ubuntu20.04

Running the test command
ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -i bbb.mp4 -c:a copy -c:v h264_nvenc -b:v 5M output.mp4, I get the following output :

ffmpeg version N-109965-ge50a02b0f6 Copyright (c) 2000-2023 the FFmpeg developers 
 built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1) 
 configuration: --enable-nonfree --enable-cuda-nvcc --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --disable-static --enable-shared 
 libavutil 58. 3.100 / 58. 3.100 
 libavcodec 60. 6.100 / 60. 6.100 
 libavformat 60. 4.100 / 60. 4.100 
 libavdevice 60. 2.100 / 60. 2.100 
 libavfilter 9. 4.100 / 9. 4.100 
 libswscale 7. 2.100 / 7. 2.100 
 libswresample 4. 11.100 / 4. 11.100 
-vsync is deprecated. Use -fps_mode 
Passing a number to -vsync is deprecated, use a string argument as described in the manual. 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bbb.mp4': 
 Metadata: 
 major_brand : isom 
 minor_version : 1 
 compatible_brands: isomavc1 
 creation_time : 2013-12-16T17:44:39.000000Z 
 title : Big Buck Bunny, Sunflower version 
 artist : Blender Foundation 2008, Janus Bager Kristensen 2013 
 comment : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net 
 genre : Animation 
 composer : Sacha Goedegebure 
 Duration: 00:10:34.60, start: 0.000000, bitrate: 3481 kb/s 
 Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 2998 kb/s, 30 fps, 30 tbr, 30k tbn (default)
 Metadata: 
 creation_time : 2013-12-16T17:44:39.000000Z 
 handler_name : GPAC ISO Video Handler 
 vendor_id : [0][0][0][0] 
 Stream #0:1[0x2](und): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default) 
 Metadata: 
 creation_time : 2013-12-16T17:44:42.000000Z 
 handler_name : GPAC ISO Audio Handler 
 vendor_id : [0][0][0][0] 
 Stream #0:2[0x3](und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 320 kb/s (default) 
 Metadata: 
 creation_time : 2013-12-16T17:44:42.000000Z 
 handler_name : GPAC ISO Audio Handler 
 vendor_id : [0][0][0][0] 
 Side data: 
 audio service type: main 
Stream mapping: 
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc)) 
 Stream #0:2 -> #0:1 (copy) 
Press [q] to stop, [?] for help 
[h264 @ 0x55bd878c2d80] Cannot load libnvcuvid.so.1 
[h264 @ 0x55bd878c2d80] Failed loading nvcuvid. 
[h264 @ 0x55bd878c2d80] Failed setup for format cuda: hwaccel initialisation returned error. 
[h264_nvenc @ 0x55bd86f5e680] Cannot load libnvidia-encode.so.1 
[h264_nvenc @ 0x55bd86f5e680] The minimum required Nvidia driver for nvenc is 520.56.06 or newer 
[vost#0:0/h264_nvenc @ 0x55bd86f5e1c0] Error initializing output stream: Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed! 


Output from
nvidia-smi:

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 525.85.05 Driver Version: 525.85.05 CUDA Version: 12.0 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 NVIDIA GeForce ... Off | 00000000:01:00.0 On | N/A |
| 27% 43C P8 12W / 250W | 500MiB / 11264MiB | 1% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
 
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
+-----------------------------------------------------------------------------+


The shared libraries are not part of the docker image. What are my options to add them ?


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FFmpeg transfer from bad media
31 décembre 2017, par TheSavoI have an SDcard that has two videos recorded from an old phone. The media is bad and I have already run SpinRite and chkdsk, to fix the errors. The files still fail to copy completely.
I can play some portion of the files in VLC player. It plays about as far as File copy and TeraCopy before the copy job fails.
They and MP4 files. I would like to use ffmpeg to transfer the portion of the video that will play out. is-ithe best parameter ?ffmpeg -i H:\badfile.mp4 e:\portion.mp4Here is the output from mediainfo if that helps
Complete name : H:\DCIM\badfile.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/3gp4)
File size : 422 MiB
Duration : 3 min 46 s
Overall bit rate : 15.6 Mb/s
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings : CABAC / 1 Ref Frames
Format settings, CABAC : Yes
Format settings, RefFrames : 1 frame
Format settings, GOP : M=1, N=61
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 3 min 45 s
Bit rate : 15.5 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 19.469 FPS
Minimum frame rate : 14.085 FPS
Maximum frame rate : 30.303 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.385
Stream size : 418 MiB (99%)
Title : VideoHandle
Language : English
Encoded date : UTC 2013-09-17 13:18:06
Tagged date : UTC 2013-09-17 13:18:06
mdhd_Duration : 225892Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : mp4a-40-2
Duration : 3 min 46 s
Bit rate mode : Constant
Bit rate : 128 kb/s
Nominal bit rate : 96.0 kb/s
Channel(s) : 2 channels
Channel positions : Front : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 3.46 MiB (1%)
Title : SoundHandle
Language : English
Encoded date : UTC 2013-09-17 13:18:06
Tagged date : UTC 2013-09-17 13:18:06 -
Encoding video for streaming with multiple subtitle streams in VLC
7 janvier 2018, par VinGarciaI am implementing an offline video streaming service, so our users can have the encrypted videos on their computers and open them only by using our streaming app.
So what I need is to stream a freshly decrypted video file directly to a local VLC client so I don’t have to save it on disk. A minimum working example would be :
cat my_video.mp4 | vlc -But this only shows the video and audio tracks, no subtitles.
I want to know if there is a way to encode a video so that this would work with 3 audio tracks and 3 subtitle tracks.
I would also settle for an answer explaining that it is not possible and why not.More details below :
I have 3 audio tracks and 3 subtitle tracks and I am using FFMPEG.
(The original format of the videos is mp4 with an h264 encoding)Currently, I am able to make streamable
.mp4files, thanks to this answer, and also to make.tsfiles that will show the video and the 3 audio options but not the subtitles. The command I am using is this :video_name=demo_0101.mp4
sub_name=demo_0101.srt
output=0101.mp4 # Or `.ts`
ffmpeg\
-i en_raw/$video_name -i pt_raw/$video_name -i es_raw/$video_name\
-i en_subs/$sub_name\
-i pt_subs/$sub_name\
-i es_subs/$sub_name\
-map 2:v\
-map 0:a:0 -map 1:a:0 -map 2:a:0\
-map 3:s -map 4:s -map 5:s\
-c:v libx264 -crf 22\
-movflags faststart\ # (This line is only necessary for .mp4)
-c:a:0 aac -c:a:1 aac -c:a:2 aac\
-c:s:0 mov_text -c:s:1 mov_text -c:s:2 mov_text\
$outputThe problem is : The subtitles are not recognized (don’t show up at all) using the
.tsformat and when using.mp4VLC reports an error :Unidentified codec :
VLC could not identify the audio or video codecPlease note when not streaming the
.mp4version works with all audios and the subtitles, i.e. :vlc my_video.mp4
In case someone is wondering I plan on selecting the which subtitle and audio to play from command line with the VLC options :
--audio-track 1 --sub-track 0I hope someone can help me. Thanks in advance.
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