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The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (95)
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Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
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MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...) -
Mise à jour de la version 0.1 vers 0.2
24 juin 2013, parExplications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...) -
Les tâches Cron régulières de la ferme
1er décembre 2010, parLa gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
Le super Cron (gestion_mutu_super_cron)
Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)
Sur d’autres sites (11211)
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Use audio stream overs ssh with ffmpeg on web page
12 février 2020, par MauricioI need to broadcast the audio stream (WiFi camera at my home) on the website hosted on a VPS.
Here is the command executed from my home :
ffmpeg -i "rtsp://172.16.0.201:554/user=admin&password=root&channel=1&stream=1.sdp" -bufsize 24k -vn -acodec copy -f mpegts - | ssh -p 22222 root@mydomain.org 'ffmpeg -i - -vn -acodec libvorbis -ac 1 -ar 8000 -ab 64k -f mpegts "rtsp://127.0.0.1:53350/live.sdp"'
It seems to work because I get
ffmpeg version n4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.2.0 (GCC)
configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
ffmpeg version 4.1.4-1~deb10u1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --prefix=/usr --extra-version='1~deb10u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, rtsp, from 'rtsp://172.16.0.201:554/user=admin&password=root&channel=1&stream=1.sdp':
Metadata:
title : RTSP Session
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 640x360, 12 fps, 12 tbr, 90k tbn, 24 tbc
Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
[mpegts @ 0x5582b6b14c40] frame size not set
Output #0, mpegts, to 'pipe:':
Metadata:
title : RTSP Session
encoder : Lavf58.29.100
Stream #0:0: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Press [q] to stop, [?] for help
size= 146kB time=00:00:17.06 bitrate= 70.0kbits/s speed=1.16xBut when I look on the VPS I don’t see the port open with netstat.
Yet the process seems to be running
root 21801 0.2 2.1 265916 42188 ? SLs 15:03 0:00 ffmpeg -i - -vn -acodec libvorbis -ac 1 -ar 8000 -ab 64k -f mpegts rtsp://127.0.0.1:53350/live.sdp
I thought I would access the feed with a simple html page with this kind of code
<audio controls="controls">
<source type="audio/ogg"></source>
<em>Désolé, votre navigateur ne supporte pas l'audio HTML5</em>
</audio>iptables
Chain INPUT (policy DROP)
....
ACCEPT tcp -- anywhere anywhere tcp dpt:53350
ACCEPT udp -- anywhere anywhere udp dpt:53350
....
Chain FORWARD (policy DROP)
ACCEPT tcp -- anywhere anywhere tcp dpt:53350
ACCEPT udp -- anywhere anywhere udp dpt:53350
....
Chain OUTPUT (policy DROP)
ACCEPT tcp -- anywhere anywhere tcp dpt:53350
ACCEPT udp -- anywhere anywhere udp dpt:53350
.... -
"Pixel format 'yuvj420p' is not supported" when converting image to video using CUDA hardware acceleration
11 février 2020, par laurentI’m trying to convert an image to a video using CUDA hardware acceleration but I can’t get it to work.
The basic command I have is this one :
ffmpeg -y -hwaccel cuvid -i tests/MediaSamples/portrait_0.jpg -t 10 out.mp4
And I’m getting this error :
[AVHWFramesContext @ 0x32d3f00] Pixel format 'yuvj420p' is not supported
[mjpeg @ 0x2d18480] Error initializing a CUDA frame pool
cuvid hwaccel requested for input stream #0:0, but cannot be initialized.
Error while decoding stream #0:0: Invalid argumentI’ve tried setting the pixel format like so, but that didn’t help :
ffmpeg -y -hwaccel cuvid -pix_fmt yuv420p -i tests/MediaSamples/portrait_0.jpg -t 10 out.mp4
I’ve also tried many other flags but can’t get anything to work. Any idea what the issue might be ?
For information this is the full log :
ffmpeg version N-96615-gc35382a Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.12) 20160609
configuration: --enable-nonfree --disable-shared --enable-gpl --enable-openssl --enable-libx264 --enable-cuda-sdk --enable-nvenc --enable-cuda --enable-cuvid --enable-libnpp --extra-cflags='-I/usr/local/ssl/include -I/usr/local/cuda/include -I/usr/local/include -L/usr/local/ssl/lib -Wl,-rpath=/usr/local/ssl/lib' --extra-ldflags=-L/usr/local/cuda/lib64
libavutil 56. 38.100 / 56. 38.100
libavcodec 58. 67.101 / 58. 67.101
libavformat 58. 37.100 / 58. 37.100
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 73.100 / 7. 73.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, image2, from 'tests/MediaSamples/portrait_0.jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 40237 kb/s
Stream #0:0: Video: mjpeg (Progressive), yuvj420p(pc, bt470bg/unknown/unknown), 1600x900 [SAR 72:72 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[AVHWFramesContext @ 0x32d3f00] Pixel format 'yuvj420p' is not supported
[mjpeg @ 0x2d18480] Error initializing a CUDA frame pool
cuvid hwaccel requested for input stream #0:0, but cannot be initialized.
Error while decoding stream #0:0: Invalid argument
[libx264 @ 0x2d1e840] using SAR=1/1
[libx264 @ 0x2d1e840] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x2d1e840] profile High, level 4.0
[libx264 @ 0x2d1e840] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 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=24 lookahead_threads=4 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=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'out.mp4':
Metadata:
encoder : Lavf58.37.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc), 1600x900 [SAR 72:72 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc58.67.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame= 0 fps=0.0 q=0.0 Lsize= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed! -
FFMPEG cannot encode .MP4 to usable .Y4M RAW video : "Operation not permitted"
26 janvier 2020, par Ham789I am running ffmpeg version 4.2.2 on macOS Sierra and I cannot decode a RAW video.
First I create the .Y4M video :
ffmpeg -y -i inputfolder/GH012088.MP4 temp_raw_video.Y4M
Then I try to input it to ffmpeg :
ffmpeg -i temp_raw_video.Y4M
However I get the following error in the terminal :
temp_raw_video.Y4M: Operation not permitted
I have checked the permissions for the ’temp_raw_video.Y4M’ file and I have both read and write permissions.
I have tried the above with .MOV videos from an iPhone and it works fine.
The problem seems to be with the .MP4 videos I am trying to convert. These videos were taken with a GoPro camera.
What is going on here ? Please see the GH012088.MP4 file info below :
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fb9b6809400] Using non-standard frame rate 29/1
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'inputfolder/GH012088.MP4':
Metadata:
major_brand : mp41
minor_version : 538120216
compatible_brands: mp41
creation_time : 2019-12-28T14:12:04.000000Z
firmware : HD7.01.01.61.00
Duration: 00:00:40.47, start: 0.000000, bitrate: 60267 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 60015 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro AVC
encoder : GoPro AVC encoder
timecode : 14:40:34:06
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro AAC
timecode : 14:40:34:06
Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro TCD
timecode : 14:40:34:06
Stream #0:3(eng): Data: bin_data (gpmd / 0x646D7067), 37 kb/s (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro MET
Stream #0:4(eng): Data: none (fdsc / 0x63736466), 10 kb/s (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro SOSHere is the output log for creating the .Y4M :
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fa9da802200] Using non-standard frame rate 29/1
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'inputfolder/GH012088.MP4':
Metadata:
major_brand : mp41
minor_version : 538120216
compatible_brands: mp41
creation_time : 2019-12-28T14:12:04.000000Z
firmware : HD7.01.01.61.00
Duration: 00:00:40.47, start: 0.000000, bitrate: 60267 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 60015 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro AVC
encoder : GoPro AVC encoder
timecode : 14:40:34:06
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro AAC
timecode : 14:40:34:06
Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro TCD
timecode : 14:40:34:06
Stream #0:3(eng): Data: bin_data (gpmd / 0x646D7067), 37 kb/s (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro MET
Stream #0:4(eng): Data: none (fdsc / 0x63736466), 10 kb/s (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro SOS
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))
Press [q] to stop, [?] for help
Output #0, yuv4mpegpipe, to 'temp_raw_video.Y4M':
Metadata:
major_brand : mp41
minor_version : 538120216
compatible_brands: mp41
firmware : HD7.01.01.61.00
encoder : Lavf58.29.100
Stream #0:0(eng): Video: wrapped_avframe, yuvj420p, 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)
Metadata:
creation_time : 2019-12-28T14:12:04.000000Z
handler_name : GoPro AVC
timecode : 14:40:34:06
encoder : Lavc58.54.100 wrapped_avframe
frame= 43 fps=0.0 q=-0.0 size= 522240kB time=00:00:01.43 bitrate=2981801.3kbiframe= 92 fps= 90 q=-0.0 size= 1117696kB time=00:00:03.06 bitrate=2982723.8kbiframe= 144 fps= 95 q=-0.0 size= 1749504kB time=00:00:04.80 bitrate=2982837.3kbiframe= 190 fps= 94 q=-0.0 size= 2308352kB time=00:00:06.33 bitrate=2982809.6kbiframe= 241 fps= 95 q=-0.0 size= 2928128kB time=00:00:08.04 bitrate=2982978.5kbiframe= 287 fps= 94 q=-0.0 size= 3486976kB time=00:00:09.57 bitrate=2982937.8kbiframe= 336 fps= 95 q=-0.0 size= 4082176kB time=00:00:11.21 bitrate=2982837.3kbiframe= 388 fps= 96 q=-0.0 size= 4713984kB time=00:00:12.94 bitrate=2982864.2kbiframe= 436 fps= 96 q=-0.0 size= 5297152kB time=00:00:14.54 bitrate=frame= 1213 fps= 95 q=-0.0 Lsize=14737957kB time=00:00:40.47 bitrate=2983002.4kbits/s speed=3.19x
video:635kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2321095.250000%