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Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...) -
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 (...) -
Organiser par catégorie
17 mai 2013, parDans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...)
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SOX got nothing from SoundFlower
12 septembre 2016, par xiaoseFor some reason on some comps SoundFlower does not catch audio.
I.e. there are SoundFlower but when I switch input\output to the SoundFlower I cannot get any sound. I have got only not empty file without any sound.Okay, how I try to get the sound...
Just FYI :
$ system_profiler SPSoftwareDataType
Software:
System Software Overview:
System Version: OS X 10.10.5 (14F1912)
Kernel Version: Darwin 14.5.0
Boot Volume: Macintosh HD
Boot Mode: Normal
Computer Name: Craig Computer
User Name: Craig (craigm)
Secure Virtual Memory: Enabled
Time since boot: 1 day22:12Gonna check is AVFoundation works :
$ ./ffmpeg -h demuxer=avfoundation
Demuxer avfoundation [AVFoundation input device]:
AVFoundation input device AVOptions:
-list_devices <int> .D...... list available devices (from 0 to 1) (default false)
true .D......
false .D......
-video_device_index <int> .D...... select video device by index for devices with same name (starts at 0) (from -1 to INT_MAX) (default -1)
-audio_device_index <int> .D...... select audio device by index for devices with same name (starts at 0) (from -1 to INT_MAX) (default -1)
-pixel_format .D...... set pixel format (default yuv420p)
-framerate .D...... set frame rate (default "ntsc")
-video_size .D...... set video size
-capture_cursor <int> .D...... capture the screen cursor (from 0 to 1) (default 0)
-capture_mouse_clicks <int> .D...... capture the screen mouse clicks (from 0 to 1) (default 0)
</int></int></int></int></int>Gonna get list of AVFoundation audio devices :
$ ./ffmpeg -f avfoundation -list_devices true -i ’’
ffmpeg version 3.1.1-tessus Copyright (c) 2000-2016 the FFmpeg developers
built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --as=yasm --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 48.101 / 57. 48.101
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 47.100 / 6. 47.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
[AVFoundation input device @ 0x7fda40421000] AVFoundation video devices:
[AVFoundation input device @ 0x7fda40421000] [0] Built-in iSight
[AVFoundation input device @ 0x7fda40421000] [1] Capture screen 0
[AVFoundation input device @ 0x7fda40421000] AVFoundation audio devices:
[AVFoundation input device @ 0x7fda40421000] [0] Soundflower (64ch)
[AVFoundation input device @ 0x7fda40421000] [1] Built-in Microphone
[AVFoundation input device @ 0x7fda40421000] [2] Soundflower (2ch)
[AVFoundation input device @ 0x7fda40421000] [3] Built-in Input
: Input/output errorOkay, we have SoundFlower in devices :
[AVFoundation input device @ 0x7fda40421000] [2] Soundflower (2ch)
Then I run AppleScript which gonna switch to the "SoundFlower (2ch)" :
enableSF("input")
enableSF("output")
Where enableSF(stdname) is :
on enableSF(stdname)
tell application "System Preferences"
-- activate
tell anchor stdname of pane "com.apple.preference.sound" to reveal
tell application "System Events"
tell application process "System Preferences"
tell tab group 1 of window 1
delay 2
set rowslist to selected of row of table 1 of scroll area 1
set counter to 0
repeat with id in rowslist
set counter to counter + 1
set rowName to (value of text field 1 of row counter of table 1 of scroll area 1)
set output to stdname & " " & rowName
set scrpt to "echo \"" & output & "\" >> ~/Desktop/ds.log"
do shell script scrpt
if (rowName is equal to "Soundflower (2ch)") then
set selected of row counter of table 1 of scroll area 1 to true
set output to "
!!! FOUND SF for " & stdname & " " & rowName
set scrpt to "echo \"" & output & "\" >> ~/Desktop/ds.log"
log output
do shell script scrpt
exit repeat
end if
end repeat
end tell
end tell
end tell
end tell
end enableSFIn result I have got this :
input Internal Microphone
input Line In
input Digi CoreAudio Device
input Soundflower (2ch)
!!! FOUND SF for input Soundflower (2ch)
output Headphones
output Digi CoreAudio Device
output Soundflower (2ch)
!!! FOUND SF for output Soundflower (2ch)It means that we switch to the SoundFlower. Actually the same can be done by hands, but the script is more reliable as for me.
Okay, next we can try to save some audio via SOX :
$ /Applications/sox-14.3.2/sox -d /Desktop/out.wav
Input File : 'default' (coreaudio)
Channels : 2
Sample Rate : 44100
Precision : 32-bit
Sample Encoding: 32-bit Signed Integer PCM
In:0.00% 00:00:00.00 [00:00:00.00] Out:0 [ | ] Clip:0
...
...
...
In:0.00% 00:00:02.51 [00:00:00.00] Out:106k [ | ] Clip:0
...
...
...
In:0.00% 00:00:11.80 [00:00:00.00] Out:516k [ | ] Clip:0 /Applications/sox-14.3.2/sox WARN coreaudio: coreaudio: unhandled buffer overrun. Data discarded.
...
...
...
In:0.00% 00:00:12.35 [00:00:00.00] Out:545k [ | ] Clip:0 /Applications/sox-14.3.2/sox WARN coreaudio: coreaudio: unhandled buffer overrun. Data discarded.
...
...
...
In:0.00% 00:00:13.28 [00:00:00.00] Out:582k [ | ] Clip:0
Aborted.And, as you can see, the SOX gives me an empty file. Rather, it gives the data, but there is no sound.
This happens on all OS from 10.10 to 10.11.6. Normal output should be this type :
In:0.00% 00:00:00.28 [00:00:00.00] Out:8.19k [======|======] Clip:0
...
...
...
In:0.00% 00:00:04.37 [00:00:00.00] Out:188k [ -====|===== ] Hd:1.1 Clip:0
...
...
...
In:0.00% 00:00:08.82 [00:00:00.00] Out:385k [======|=====-] Hd:1.1 Clip:0
In:0.00% 00:00:09.01 [00:00:00.00] Out:393k [-=====|=====-] Hd:1.1 Clip:0
In:0.00% 00:00:09.20 [00:00:00.00] Out:401k [======|======] Hd:1.1 Clip:0 -
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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Mozilla Firefox 36 has problems playing my h264 MP4 files
11 juin 2015, par Wolfgang PürstnerI try to convert videos with ffmpeg to mp4 format (h264) Profile : High Level : 3.1 (1280x720 with 30fps), Bitrate 1500k
The video plays very well in every browser except in Firefox.
http://5.79.72.89/trailer/trailer.mp4
At first it needs longer to load and when I seek inside the video most times the video don’t stop to load and never plays again.
I can see a lot of partial downloads in the developer console. A lot of them are for the initial play and the rest of the requests are during the video load when I seek to a later position.
When I play other h264 Videos (MP4 with similar settings) they play without problems on this server.
And when I put my video on another webserver (apache) there are the same problems with Firefox.For this reason I believe it has to do something with me my conversion.
My settings :
Debian 7 (wheezy)
Webserver : nginx (with 260k bandwidth limit)I started converting videos with avconv and switched to ffmpeg because of this problems. But there was no success.
Meanwhile I tried all options for encoding but there are always the same problems with Firefox. Other videos play well but not mines and I don’t know why.Command :
ffmpeg -i input.mp4 -tune zerolatency -x264opts bitrate=1500:vbv-maxrate=1500:vbv-bufsize=3000:nal-hrd=vbr -codec:v libx264 -profile:v high -level 3.1 -movflags +faststart -pix_fmt yuv420p -s 1280x720 -r 30 -ac 2 -ar 48000 -codec:a aac -ab 64k -strict experimental -y trailer.mp4
ffmpeg 1.0.10 libavutil 51. 73.101 / 51. 73.101 libavcodec 54. 59.100 / 54. 59.100 libavformat 54. 29.104 / 54. 29.104 libavdevice 54. 2.101 / 54. 2.101 libavfilter 3. 17.100 / 3. 17.100 libswscale 2. 1.101 / 2. 1.101 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100
Mediainfo of the file : trailer.mp4
General Complete name : trailer.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom File size : 115 MiB Duration : 10mn 34s Overall bit rate : 1 516 Kbps Movie name : Big Buck Bunny, Sunflower version Performer : Blender Foundation 2008, Janus Bager Kristensen 2013 Composer : Sacha Goedegebure Genre : Animation Writing application : Lavf54.29.104 Comment : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 10mn 34s
Bit rate : 1 500 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.024
Stream size : 109 MiB (95%)
Writing library : x264 core 132
Encoding settings : cabac=1 / ref=4 / 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=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=50 / keyint_min=5 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=cbr / mbtree=1 / bitrate=1500 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=1500 / vbv_bufsize=3000 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 10mn 34s
Duration_LastFrame : -11ms
Bit rate mode : Constant
Bit rate : 64.2 Kbps
Channel(s) : 2 channels
Channel positions : Front : L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -2ms
Stream size : 4.85 MiB (4%)I don’t know what is wrong with my files.
Update 2015-03-12 :
If I convert the video without audio stream there is no problem with firefox anymore.
I updated ffmpeg to 2.6. I used libfaac, aac and libfdk_aac for audio encoding with cbr and vbr but without success.
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