
Recherche avancée
Médias (1)
-
La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (96)
-
Les vidéos
21 avril 2011, parComme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...) -
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 (...) -
Le plugin : Gestion de la mutualisation
2 mars 2010, parLe plugin de Gestion de mutualisation permet de gérer les différents canaux de mediaspip depuis un site maître. Il a pour but de fournir une solution pure SPIP afin de remplacer cette ancienne solution.
Installation basique
On installe les fichiers de SPIP sur le serveur.
On ajoute ensuite le plugin "mutualisation" à la racine du site comme décrit ici.
On customise le fichier mes_options.php central comme on le souhaite. Voilà pour l’exemple celui de la plateforme mediaspip.net :
< ?php (...)
Sur d’autres sites (12519)
-
FFMPEG intermittent failures reading live RTMP stream
22 janvier 2019, par stevendesuThe Command
I’m attempting to read a live RTMP stream and save the result to a file with the following command :
ffmpeg -re -rtmp_live live -y -i "rtmp://<server>/<app>/<stream>" -c copy -f flv /tmp/dump.flv
</stream></app></server>I run this command then after 10-15 seconds I kill the process and check
/tmp/dump.flv
. I’m trying to do this for stream diagnostic purposes (determine the encoding, bitrate, resolution, pixel format, and key frame interval of the live stream)This command works about 25-50% of the time. When it works FFMPEG takes about 5 seconds to connect to the stream, then it begins dumping data to disk. After I kill the process, I can find a couple of megabytes of video data in
/tmp/dump.flv
which can be probed usingffprobe
.When the command fails, it goes into one of two failure states :
Failure State 1
stderr is flooded with a series of messages about "missing picture in access unit with size X", and the output file
/tmp/dump.flv
is created but contains 0 bytesffmpeg version 3.4.4-1~16.04.york0 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
configuration: --prefix=/usr --extra-version='1~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
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
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
[NULL @ 0x55b72d568920] pps_id 381 out of range
[AVBSFContext @ 0x55b72d5692c0] Invalid NAL unit 0, skipping.
Last message repeated 1 times
[h264 @ 0x55b72d568920] Invalid NAL unit 0, skipping.
Last message repeated 1 times
[h264 @ 0x55b72d568920] no frame!
[h264 @ 0x55b72d568920] missing picture in access unit with size 2200
[AVBSFContext @ 0x55b72d5692c0] Invalid NAL unit 0, skipping.
Last message repeated 2 times
[h264 @ 0x55b72d568920] Invalid NAL unit 0, skipping.
Last message repeated 2 times
[h264 @ 0x55b72d568920] no frame!
[h264 @ 0x55b72d568920] missing picture in access unit with size 3171
[AVBSFContext @ 0x55b72d5692c0] Invalid NAL unit 0, skipping.
[h264 @ 0x55b72d568920] Invalid NAL unit 0, skipping.
[h264 @ 0x55b72d568920] no frame!
[NULL @ 0x55b72d568920] missing picture in access unit with size 80572
[h264 @ 0x55b72d568920] missing picture in access unit with size 1560
[h264 @ 0x55b72d568920] missing picture in access unit with size 2608
[h264 @ 0x55b72d568920] non-existing PPS 0 referenced
[h264 @ 0x55b72d568920] missing picture in access unit with size 2734
[h264 @ 0x55b72d568920] missing picture in access unit with size 2885
[h264 @ 0x55b72d568920] missing picture in access unit with size 77739
[h264 @ 0x55b72d568920] non-existing PPS 254 referenced
[h264 @ 0x55b72d568920] missing picture in access unit with size 3360
[h264 @ 0x55b72d568920] missing picture in access unit with size 2804
[h264 @ 0x55b72d568920] missing picture in access unit with size 3051
[h264 @ 0x55b72d568920] missing picture in access unit with size 3067
[h264 @ 0x55b72d568920] missing picture in access unit with size 77693
[h264 @ 0x55b72d568920] non-existing PPS 0 referenced
[h264 @ 0x55b72d568920] missing picture in access unit with size 2421
[h264 @ 0x55b72d568920] missing picture in access unit with size 2779
[h264 @ 0x55b72d568920] missing picture in access unit with size 2442
[h264 @ 0x55b72d568920] missing picture in access unit with size 2678
[h264 @ 0x55b72d568920] missing picture in access unit with size 76877
[h264 @ 0x55b72d568920] sps_id 15 out of range
[h264 @ 0x55b72d568920] missing picture in access unit with size 1342
[h264 @ 0x55b72d568920] missing picture in access unit with size 2412
[h264 @ 0x55b72d568920] missing picture in access unit with size 2238
[h264 @ 0x55b72d568920] missing picture in access unit with size 3550
[h264 @ 0x55b72d568920] missing picture in access unit with size 3075
...
(after hitting Ctrl+C:)
Input #0, flv, from 'rtmp://<server>/<app>/<stream>':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.83.100
Duration: 00:00:00.00, start: 5285.919000, bitrate: N/A
Stream #0:0: Video: h264 (Constrained Baseline), yuv420p, 1920x1080, 2543 kb/s, 24 fps, 24 tbr, 1k tbn, 48 tbc
Output #0, flv, to '/tmp/dump.flv':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (Constrained Baseline) ([7][0][0][0] / 0x0007), yuv420p, 1920x1080, q=2-31, 2543 kb/s, 24 fps, 24 tbr, 1k tbn, 1k tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 0 fps=0.0 q=-1.0 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
Exiting normally, received signal 2.
</stream></app></server>Failure State 2
The message "No start code is found." is displayed and FFMPEG immediately terminates after less than a half-second. When this happens the file
/tmp/dump.flv
is not created.ffmpeg version 3.4.4-1~16.04.york0 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
configuration: --prefix=/usr --extra-version='1~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
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
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
[NULL @ 0x56274b0be920] missing picture in access unit with size 3710
[AVBSFContext @ 0x56274b0bf2c0] No start code is found.
rtmp://<server>/<app>/<stream>: could not find codec parameters
Input #0, flv, from 'rtmp://<server>/<app>/<stream>':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.83.100
Duration: 00:00:00.00, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264, none, 2543 kb/s, 24 fps, 1k tbn
Output #0, flv, to '/tmp/dump.flv':
Output file #0 does not contain any stream
</stream></app></server></stream></app></server>What I’ve tried
- Adding or removing
-re
to try and limit the input frame rate to the source frame rate - Adding or removing
-rtmp_live live
- Adding or removing
-timeout 5
(or any other timeout value) - Using RTMP URL parameters (e.g.
-i "rtmp://<server>/<app>/<stream> live=1 timeout=5"</stream></app></server>
)
Does anyone know why this command’s success is so intermittent or how I can get more consistent results ?
Alternate Acceptable Solution
The only reason I’m using
ffmpeg
to dump the stream to a temporary file at all is because I plan to perform multiple tests on the file (at least two at the moment — one to get the encoding, and another to get the key frame interval). By downloading the stream I reduce bandwidth usage and reduce runtime. However it’s perfectly acceptable to foregoffmpeg
and just useffprobe
directly on the RTMP URL if this would help.Note that I did try this and I get the same two failure states with
ffprobe
- Adding or removing
-
First overlay text not lasting
14 octobre 2018, par Pier Giorgio MisleyI have this snippet of code, adding two overlayed texts with same effects/durations in two different part of my video.
-i "input.mp4" -filter_complex "color=black:100x100,format=yuva444p[c];[c][0]scale2ref[ct][mv0]; [ct]setsar=1,split=2[t1][t2]; [t1]drawtext=fontfile=Arial.ttf:text='Pippo':fontcolor=white:fontsize=32:box=1: boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2 - 20,fade=t=in:st=6:d=2:alpha=1,fade=t=out:st=19:d=2:alpha=1[txta1];[t2]drawtext=fontfile=Arial.ttf:text='Topolino':fontcolor=white:fontsize=32:box=1: boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2 + 20,fade=t=in:st=6:d=2:alpha=1,fade=t=out:st=19:d=2:alpha=1[txta2];[mv0][txta1]overlay=0:0:shortest=1[mv1];[mv1][txta2]overlay=0:0:shortest=1" "output.mp4"
Somewhy, the second text, "
Topolino
" lasts perfectly from the fade-in to the fade-out.The first text ("
Pippo
") is appearing and disappearing immediatly.They have the same effect, so what am I doing wrong ?
Thanks
Edit : added output
Error : ffmpeg version N-90893-gcae6f806a6 Copyright (c) 2000-2018 the
FFmpeg developersError : built with gcc 7.3.0 (GCC)
Error : configuration : —enable-gpl —enable-version3 —enable-sdl2
—enable-bzlib —enable-fontconfig —enable-gnutls —enable-iconv —enable-libass —enable-libbluray —enable-libfreetype —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —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-libvo-amrwbenc —enable-libmysofa —enable-libspeex —enable-libxvid —enable-libaom —enable-libmfx —enable-amf —enable-ffnvcodec —enable-cuvid —enable-d3d11va —enable-nvenc —enable-nvdec —enable-dxva2 —enable-avisynthError : libavutil 56. 17.100 / 56. 17.100
Error : libavcodec 58. 19.100 / 58. 19.100
Error : libavformat 58. 13.100 / 58. 13.100
Error : libavdevice 58. 4.100 / 58. 4.100
Error : libavfilter 7. 21.100 / 7. 21.100
Error : libswscale 5. 2.100 / 5. 2.100
Error : libswresample 3. 2.100 / 3. 2.100
Error : libpostproc 55. 2.100 / 55. 2.100
Error : Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ’D :\AREA\video.mp4’ :
Error : Metadata :
Error : major_brand : isom
Error : minor_version : 512
Error : compatible_brands : isomiso2avc1mp41
Error : encoder : Lavf58.13.100
Error : Duration : 00:02:12.50, start : 0.000000, bitrate : 3149 kb/s
Error : Stream #0:0(und) : Video : h264 (High) (avc1 / 0x31637661),
yuv420p(tv, bt709), 1024x600 [SAR 1:1 DAR 128:75], 3014 kb/s, 24 fps,
24 tbr, 19200 tbn, 50 tbc (default)Error : Metadata :
Error : handler_name : VideoHandler
Error : timecode : 00:00:00:00
Error : Stream #0:1(und) : Audio : aac (LC) (mp4a / 0x6134706D),
44100 Hz, stereo, fltp, 129 kb/s (default)Error : Metadata :
Error : handler_name : SoundHandler
Error : Stream #0:2(eng) : Data : none (tmcd / 0x64636D74)
Error : Metadata :
Error : handler_name : TimeCodeHandler
Error : timecode : 00:00:00:00
Error : Fontconfig error : Cannot load default config file
Error : [Parsed_drawtext_5 @ 000002a7c251ea00] Using
"C :/WINDOWS/fonts/mingliub.ttc"Error : Fontconfig error : Cannot load default config file
Error : [Parsed_drawtext_8 @ 000002a7c2c52a00] Using
"C :/WINDOWS/fonts/mingliub.ttc"Error : Stream mapping :
Error : Stream #0:0 (h264) -> scale2ref:ref (graph 0)
Error : overlay (graph 0) -> Stream #0:0 (libx264)
Error : Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Error : Press [q] to stop, [?] for help
Error : Fontconfig error : Cannot load default config file
Error : [Parsed_drawtext_5 @ 000002a7c3e6aec0] Using
"C :/WINDOWS/fonts/mingliub.ttc"Error : Fontconfig error : Cannot load default config file
Error : [Parsed_drawtext_8 @ 000002a7c3e6ac80] Using
"C :/WINDOWS/fonts/mingliub.ttc"Error : [libx264 @ 000002a7c2a9d800] using SAR=1/1
Error : [libx264 @ 000002a7c2a9d800] using cpu capabilities : MMX2
SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2Error : [libx264 @ 000002a7c2a9d800] profile High, level 3.1
Error : [libx264 @ 000002a7c2a9d800] 264 - core 155 r2901 7d0ff22 -
H.264/MPEG-4 AVC codec - Copyleft 2003-2018 -
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=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=250
keyint_min=24 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=1:1.00Error : Output #0, mp4, to ’D :\AREA\output_text.mp4’ :
Error : Metadata :
Error : major_brand : isom
Error : minor_version : 512
Error : compatible_brands : isomiso2avc1mp41
Error : encoder : Lavf58.13.100
Error : Stream #0:0 : Video : h264 (libx264) (avc1 / 0x31637661),
yuv420p, 1024x600 [SAR 1:1 DAR 128:75], q=-1—1, 24 fps, 12288 tbn, 24
tbc (default)Error : Metadata :
Error : encoder : Lavc58.19.100 libx264
Error : Side data :
Error : cpb : bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay :
-1Error : Stream #0:1(und) : Audio : aac (LC) (mp4a / 0x6134706D),
44100 Hz, stereo, fltp, 128 kb/s (default)Error : Metadata :
Error : handler_name : SoundHandler
Error : encoder : Lavc58.19.100 aac
Error : frame= 61 fps=0.0 q=28.0 size= 0kB time=00:00:02.83
bitrate= 0.1kbits/s speed=5.65xError : frame= 137 fps=136 q=28.0 size= 0kB time=00:00:05.99
bitrate= 0.1kbits/s speed=5.94x[...]
Error : frame= 3180 fps= 88 q=-1.0 Lsize= 16533kB time=00:02:12.51
bitrate=1022.0kbits/s speed=3.65xError : video:14352kB audio:2080kB subtitle:0kB other streams:0kB
global headers:0kB muxing overhead : 0.611671%Error : [libx264 @ 000002a7c2a9d800] frame I:14 Avg QP:17.18 size :
42960Error : [libx264 @ 000002a7c2a9d800] frame P:1170 Avg QP:20.09 size :
9916Error : [libx264 @ 000002a7c2a9d800] frame B:1996 Avg QP:21.54 size :
1249Error : [libx264 @ 000002a7c2a9d800] consecutive B-frames : 3.3% 38.3%
2.5% 56.0%Error : [libx264 @ 000002a7c2a9d800] mb I I16..4 : 27.0% 61.1% 11.8%
Error : [libx264 @ 000002a7c2a9d800] mb P I16..4 : 4.3% 5.8% 0.3%
P16..4 : 34.6% 9.8% 7.3% 0.0% 0.0% skip:38.0%Error : [libx264 @ 000002a7c2a9d800] mb B I16..4 : 0.3% 0.5% 0.0%
B16..8 : 19.5% 0.9% 0.1% direct : 2.0% skip:76.6% L0:39.8% L1:55.2%
BI : 5.0%Error : [libx264 @ 000002a7c2a9d800] 8x8 transform intra:57.0%
inter:84.0%Error : [libx264 @ 000002a7c2a9d800] coded y,uvDC,uvAC intra : 33.3%
65.4% 24.9% inter : 10.4% 17.5% 2.4%Error : [libx264 @ 000002a7c2a9d800] i16 v,h,dc,p : 59% 17% 12% 13%
Error : [libx264 @ 000002a7c2a9d800] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu : 35%
15% 33% 2% 3% 3% 3% 3% 2%Error : [libx264 @ 000002a7c2a9d800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu : 36%
18% 13% 4% 6% 7% 6% 6% 4%Error : [libx264 @ 000002a7c2a9d800] i8c dc,h,v,p : 52% 17% 24% 7%
Error : [libx264 @ 000002a7c2a9d800] Weighted P-Frames : Y:29.0%
UV:17.2%Error : [libx264 @ 000002a7c2a9d800] ref P L0 : 65.1% 15.7% 14.5% 4.3%
0.5%Error : [libx264 @ 000002a7c2a9d800] ref B L0 : 89.7% 8.2% 2.1%
Error : [libx264 @ 000002a7c2a9d800] ref B L1 : 98.1% 1.9%
Error : [libx264 @ 000002a7c2a9d800] kb/s:887.30
Error : [aac @ 000002a7c24a6e00] Qavg : 179.786
Error :
-
FFmpeg skips generating thumbs
25 janvier 2018, par Awais fiazI am using
ffmpeg
for creating thumbs out of videos withinphp
script howeverffmpeg
skips creating thumbs sometimes but sometimes it goes okay and works fine i am a little confused of this strange behavior.Command which fails :
Command : /opt/bin/ffmpeg -ss 00:00:06 -i /home/my/public_html/files/conversion_queue/1516767375521d6.mp4 -an -r 1 -y -f image2 -vframes 1 /home/my/public_html/files/thumbs/2018/01/24/1516767375521d6-original-1.jpg
Output error
[image2 @ 0x2eaab00] Could not open file : /home/my/public_html/files/thumbs/2018/01/24/1516767375521d6-original-1.jpg
av_interleaved_write_frame(): Input/output error
frame= 1 fps=0.0 q=7.1 Lsize=N/A time=00:00:01.00 bitrate=N/A speed=25.3x
video:41kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!Command which works fine :
Command : /opt/bin/ffmpeg -ss 00:01:01 -i /home/my/public_html/files/conversion_queue/1516867108c557e.mp4 -an -r 1 -y -f image2 -vframes 1 /home/my/public_html/files/thumbs/2018/01/25/1516867108c557e-original-1.jpg
Output
frame= 1 fps=0.0 q=3.1 Lsize=N/A time=00:00:01.00 bitrate=N/A speed=49.9x
video:21kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknownAlthough both are same but still i am facing this issue.
Any help regarding this would be really appreciated.