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Autres articles (26)
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Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...) -
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 (...) -
Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)
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FFmpeg library (ver 5.1) multithread decode and scaler
19 août 2022, par wolverinI wrote my own code that takes the video from v4l2 MJPEG and streams it to the rtsp server in H264.


Everything is fine as long as the incoming and outgoing stream resolution is 640x480, but if the incoming is 1920x1080 and I do sws_scale, then decoding and scaling are very slow.


If I run ffmpeg from the command line, I see swscale errors, which means that sws_getContext is called 20 times, which means a queue of 20 scaling threads is created


Input #0, video4linux2,v4l2, from '/dev/video0':
 Duration: N/A, bitrate: N/A
 Stream #0:0: Video: mjpeg, none(bt470bg/unknown/unknown), 640x480, 30 fps, 30 tbr, 1000k tbn
Stream mapping:
 Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[swscaler @ 0x14b8160] [swscaler @ 0x14c18b0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14df9b0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14fd790] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x151b570] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x1539350] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14c18b0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14db1a0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14f8f80] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x1516d60] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x15396f0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x152d3d0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14c2060] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14dfe40] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14fdc20] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x151ba00] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x152d3d0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14c2060] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14dfe40] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x14fdc20] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x14b8160] [swscaler @ 0x151ba00] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0x14a0950] using cpu capabilities: ARMv6 NEON
[libx264 @ 0x14a0950] profile High 4:2:2, level 3.0, 4:2:2 8-bit
[libx264 @ 0x14a0950] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=cbr mbtree=0 bitrate=500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=500 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
Output #0, rtsp, to 'rtsp://localhost:554/cam':
 Metadata:
 encoder : Lavf59.25.100
 Stream #0:0: Video: h264, yuv422p(tv, bt470bg/unknown/unknown, progressive), 640x480, q=2-31, 500 kb/s, 30 fps, 90k tbn
 Metadata:
 encoder : Lavc59.33.100 libx264
 Side data:
 cpb: bitrate max/min/avg: 500000/0/500000 buffer size: 1000000 vbv_delay: N/A


1. How to create a multithreading ffmpeg for sws_scale ?


2. Does internal multithreading work for mjpeg decoding, for example in AVCodecContext ? If not, what is the best way to create multithreading for decoding ?


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ffplay 461 Unsupported transport
28 octobre 2017, par CeratoPlease help me to understand what I am doing wrong.
I am executing the following command for making a live stream
Executing: powershell gst-launch-1.0 filesrc location=D:/testVODs/sample.mkv ! matroskademux name=dmx dmx. ! h264parse config-interval=1 ! queue ! rtspclientsink profiles=avpf protocols=udp location="rtsp://192.168.1.1:8554/8c83bea4-b49b-4776-9c0f-d11e9e8898f0/1" name=rtsp_out dmx. ! opusparse ! queue ! rtsp_out.and in the result, I see that the execution ended after 00:01:21 which means that the stream is ended successfully after my video ended :
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Progress: (open) Opening Stream
Progress: (connect) Connecting to rtsp://192.168.1.1:8554/8c83bea4-b49b-4776-9c0f-d11e9e8898f0/1
Progress: (open) Retrieving server options
Progress: (open) Opened Stream
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Progress: (request) Sending RECORD request
Progress: (record) Sending server stream info
Progress: (request) Sending RECORD request
Progress: (request) SETUP stream 1
Progress: (request) SETUP stream 0
Progress: (record) Starting recording
Got EOS from element "pipeline0".
Execution ended after 0:01:21.318315052
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...at the same time I am trying to play the stream using the following request :
Executing: powershell ffplay -rtsp_transport http "rtsp://192.168.1.1:8554/live/8c83bea4-b49b-4776-9c0f-d11e9e8898f0/1"but I have the following response :
ffplay started on 2017-10-27 at 18:52:13
Report written to "D:/testVODs/Stream1to.log"
ffplay version 3.4 Copyright (c) 2003-2017 the FFmpeg developers
built with gcc 7.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
[rtsp @ 000001930a05e500] method SETUP failed: 461 Unsupported transport
rtsp://192.168.1.1:8554/live/8c83bea4-b49b-4776-9c0f-d11e9e8898f0/1: Unknown errorwhy method SETUP failed as 461 Unsupported transport and how it can be solved ?
I tried to use different ffplay, ffmpeg commands, but all of them lead to the same result.
If I do not use rtsp_trasport command I have the error [udp @ 000001d1ab52c300] ’circular_buffer_size’ option was set but it is not supported on this build (pthread support is required)
and the same 461 Unsupported transportBefore I added "profiles=avpf" to my stream creation request I managed to play it successfully with "rtsp_transport tcp".
But now profiles=avpf is required and I need to understand how to deal with it -
FFMPEG on ubuntu wont start. Process is just killed [on hold]
8 novembre 2018, par AK47I am trying to run a command on ffmpeg. When I run on my local computer it works fine but when running on my ubuntu server it won’t start. It just keeps giving an error saying the process is killed when it trys to start. Is this something related to memory or a different issue ?
Killed 14 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=2 drop=0 speed= 0xAny help would be greatly appreciated
Below are logs that are thrown.
root@kickpush:/var/www/kick-push.co.uk/public_html/allblacks# ffmpeg -loop 1 -i q.png -r 30 -t 10 -i a.png -r 30 -t 5 image2.mp4
ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --disable-ffserver--enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libtheora --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab --enable-libwavpack --enable-nvenc --enable-libzimg
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, png_pipe, from 'q.png':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: png, rgba(pc), 1080x1920, 25 fps, 25 tbr, 25 tbn, 25 tbc
Input #1, png_pipe, from 'a.png':
Duration: N/A, bitrate: N/A
Stream #1:0: Video: png, rgba(pc), 1080x1920, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x31a4a40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x31a4a40] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 0x31a4a40] 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=4 threads=1 lookahead_threads=1 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 'image2.mp4':
Metadata:
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 1080x1920, q=-1--1, 30 fps, 15360 tbn, 30 tbc
Metadata:
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Killed 14 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=2 drop=0 speed= 0x
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