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Somos millones 1
21 juillet 2014, par
Mis à jour : Juin 2015
Langue : français
Type : Video
Autres articles (64)
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Publier sur MédiaSpip
13 juin 2013Puis-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 -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (5783)
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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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Why does FFMPEG report the wrong duration ?
27 avril 2013, par Adrian LynchI have an oldish build of FFMPEG that I can't easily change.
We use FFMPEG to find the duration of video and sound files. So far it has been working wonderfully.
Recently on an uploaded file, FFMPEG has reported a 30 second file as being 5 minutes 30 seconds in length.
Could it be something wrong with the file rather than FFMPEG ?
If I use FFMPEG to convert to another file, the duration is restored.
In case it matters, ffmpeg -i 'path to the file' produces :
FFmpeg version Sherpya-r15618, Copyright (c) 2000-2008 Fabrice Bellard, et al. libavutil 49.11. 0 / 49.11. 0 libavcodec 52. 0. 0 / 52. 0. 0 libavformat 52.22. 1 / 52.22. 1 libavdevice 52. 1. 0 / 52. 1. 0 libswscale 0. 6. 1 / 0. 6. 1 libpostproc 51. 2. 0 / 51. 2. 0 built on Oct 14 2008 23:43:47, gcc : 4.2.5 20080919 (prerelease) [Sherpya] Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'H :\path\to\file.mov' : Duration : 00:05:35.00, start : 0.000000, bitrate : 1223 kb/s Stream #0.0(eng) : Audio : aac, 44100 Hz, stereo, s16 Stream #0.1(eng) : Video : h264, yuv420p, 720x576, 25.00 tb(r) Must supply at least one output fileIt's that very command I use to then extract the duration with RegEx.
Does anyone have a nice application that can do what I'm trying above but get it right 100% of the time ?
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FFmpeg returning an error - What does it mean ?
19 mars 2013, par user1031947I am using FFmpeg, libmp3lame & libx264 along with the node fluent-ffmpeg module. This is my first foray into processing uploaded videos.
From node, I use the following code to process an uploaded video :
var proc = new ffmpeg({ source: src, nolog: true })
.usingPreset( "podcast" )
.withAudioCodec( "libmp3lame" )
.saveToFile( dest, function( retcode, err ){
if( err ) throw err;
...
});When I try to process a video, this fails with the following error, which I don't understand. I am hoping someone here can help point me in the right direction. Thanks !
> ffmpeg version 0.8.5-6:0.8.5-1, Copyright (c) 2000-2012 the Libav
> developers built on Jan 13 2013 12:05:48 with gcc 4.7.2
> *** THIS PROGRAM IS DEPRECATED *** This program is only provided for compatibility and will be removed in a future release. Please use
> avconv instead.
>
> Seems stream 0 codec frame rate differs from container frame rate:
> 5994.00 (5994/1) -> 29.97 (2997/100) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
> '/home/ssp/resources/tmp/32111bf4217e87c23328ec81c56c7d02':
> Metadata:
> major_brand : M4VP
> minor_version : 1
> compatible_brands: M4VPM4A mp42isom
> creation_time : 2008-08-26 17:28:47 Duration: 00:00:08.01, start: 0.000000, bitrate: 944 kb/s
> Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 480x272, 815 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 5994 tbc
> Metadata:
> creation_time : 2008-08-26 17:28:47
> Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 124 kb/s
> Metadata:
> creation_time : 2008-08-26 17:28:47 [buffer @ 0xb685a0] w:480 h:272 pixfmt:yuv420p [scale @ 0xb63280] w:480 h:272 fmt:yuv420p ->
> w:320 h:176 fmt:yuv420p flags:0x4 [libx264 @ 0xb67c20] VBV maxrate
> unspecified, assuming CBR [libx264 @ 0xb67c20] using cpu capabilities:
> MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX [libx264 @ 0xb67c20]
> profile Main, level 1.3 Output #0, m4v, to
> '/home/ssp/resources/users/11/026468c8f4ea1beee0a585ebc2208137.m4v':
> Metadata:
> major_brand : M4VP
> minor_version : 1
> compatible_brands: M4VPM4A mp42isom
> creation_time : 2008-08-26 17:28:47
> encoder : Lavf53.21.1
> Stream #0.0(eng): Video: libx264, yuv420p, 320x176, q=10-51, 512 kb/s, 90k tbn, 29.97 tbc
> Metadata:
> creation_time : 2008-08-26 17:28:47
> Stream #0.1(eng): Audio: libmp3lame, 44100 Hz, 1 channels, s16, 128 kb/s
> Metadata:
> creation_time : 2008-08-26 17:28:47 Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press ctrl-c to stop encoding frame= 240 fps=154 q=11.0 Lsize= 642kB time=7.97 bitrate=
> 659.3kbits/s video:516kB audio:126kB global headers:0kB muxing overhead 0.000000% frame I:1 Avg QP:15.35 size: 9995 [libx264 @
> 0xb67c20] frame P:77 Avg QP:13.25 size: 5419 [libx264 @ 0xb67c20]
> frame B:162 Avg QP:18.31 size: 625 [libx264 @ 0xb67c20]
> consecutive B-frames: 2.5% 12.5% 30.0% 55.0% [libx264 @ 0xb67c20] mb
> I I16..4: 9.1% 0.0% 90.9% [libx264 @ 0xb67c20] mb P I16..4: 2.1%
> 0.0% 2.8% P16..4: 18.0% 29.9% 44.8% 0.0% 0.0% skip: 2.3% [libx264 @ 0xb67c20] mb B I16..4: 0.1% 0.0% 0.0% B16..8: 35.2%
> 20.2% 1.9% direct:14.5% skip:28.1% L0:26.3% L1:38.1% BI:35.6% [libx264 @ 0xb67c20] coded y,uvDC,uvAC intra: 83.7% 91.7% 84.7% inter:
> 27.7% 43.4% 13.9% [libx264 @ 0xb67c20] i16 v,h,dc,p: 20% 29% 42% 9% [libx264 @ 0xb67c20] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 29% 20% 4%
> 8% 6% 9% 3% 4% [libx264 @ 0xb67c20] i8c dc,h,v,p: 60% 19% 16% 5%
> [libx264 @ 0xb67c20] Weighted P-Frames: Y:2.6% UV:0.0% [libx264 @
> 0xb67c20] ref P L0: 75.6% 13.5% 8.0% 2.8% 0.1% [libx264 @ 0xb67c20]
> ref B L0: 94.5% 5.5% [libx264 @ 0xb67c20] kb/s:528.00
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