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Autres articles (68)
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Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...) -
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
Sur d’autres sites (11444)
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ffmpeg options for playing in iPad WebView with tag
19 septembre 2013, par Waynn LueI'm trying to convert a video to be played in a tag in a WebView in iOS. I've tried the options at this link but it still doesn't seem to play. I've found videos that do successfully play, though, so I'm sure it's possible, I just can't seem to get any working. Here's the ffmpeg -i output for something that works.
Here's what I tried from the wiki :
ffmpeg -i {filename} -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1200k -f mp4 -threads 0 {filename}.ipad.mp4
But the file doesn't play in the WebView.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.m4v' : Metadata : major_brand : M4V minor_version : 1 compatible_brands : M4V M4A mp42isom creation_time : 2005-12-20 20:20:15 Duration : 00:01:25.50, start : 0.000000, bitrate : 209 kb/s Stream #0:0(eng) : Audio : aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 115 kb/s Metadata : creation_time : 2005-12-20 20:20:15 handler_name : Apple Sound Media Handler Stream #0:1(eng) : Video : h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240, 90 kb/s, 10 fps, 10 tbr, 1k tbn, 2k tbc Metadata : creation_time : 2005-12-20 20:20:15 handler_name : Apple Video Media Handler
And here's the output for my input file :
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cheerfulness.mov' : Metadata : major_brand : qt minor_version : 537199360 compatible_brands : qt creation_time : 2013-07-31 00:47:22 Duration : 00:00:06.00, start : 0.000000, bitrate : 120849 kb/s Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1200x1920, 120823 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc Metadata : creation_time : 2013-07-31 00:48:33 handler_name : Apple Alias Data Handler
edit : Here's the full output of the command :
wlue :$ ffmpeg -i cheerfulness.mov -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1200k -f mp4 -threads 0 output.ipad.mp4 ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers built on Sep 18 2013 18:44:15 with Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn) configuration : —prefix=/usr/local/Cellar/ffmpeg/1.2.1 —enable-shared —enable-pthreads —enable-gpl —enable-version3 —enable-nonfree —enable-hardcoded-tables —enable-avresample —enable-vda —cc=cc —host-cflags= —host-ldflags= —enable-libx264 —enable-libfaac —enable-libmp3lame —enable-libxvid libavutil 52. 18.100 / 52. 18.100 libavcodec 54. 92.100 / 54. 92.100 libavformat 54. 63.104 / 54. 63.104 libavdevice 54. 3.103 / 54. 3.103 libavfilter 3. 42.103 / 3. 42.103 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'cheerfulness.mov' : Metadata : major_brand : qt minor_version : 537199360 compatible_brands : qt creation_time : 2013-07-31 00:47:22 Duration : 00:00:06.01, start : 0.000000, bitrate : 120849 kb/s Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1200x1920, 120823 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc Metadata : creation_time : 2013-07-31 00:48:33 handler_name : Apple Alias Data Handler Please use -b:a or -b:v, -b is ambiguous [libx264 @ 0x7fa67401fa00] frame MB size (75x120) > level limit (1620) [libx264 @ 0x7fa67401fa00] DPB size (5 frames, 17280000 bytes) > level limit (0 frames, 3110400 bytes) [libx264 @ 0x7fa67401fa00] MB rate (269730) > level limit (40500) [libx264 @ 0x7fa67401fa00] using cpu capabilities : MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX [libx264 @ 0x7fa67401fa00] profile Constrained Baseline, level 3.0 [libx264 @ 0x7fa67401fa00] 264 - core 125 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options : cabac=0 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 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=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=1200 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=10000 vbv_bufsize=10000 nal_hrd=none ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'output.ipad.mp4' : Metadata : major_brand : qt minor_version : 537199360 compatible_brands : qt encoder : Lavf54.63.104 Stream #0:0(eng) : Video : h264 ([33][0][0][0] / 0x0021), yuv420p, 1200x1920, q=-1—1, 1200 kb/s, 30k tbn, 29.97 tbc Metadata : creation_time : 2013-07-31 00:48:33 handler_name : Apple Alias Data Handler Stream mapping : Stream #0:0 -> #0:0 (h264 -> libx264) Press [q] to stop, [?] for help frame= 180 fps= 16 q=-1.0 Lsize= 828kB time=00:00:06.00 bitrate=1129.2kbits/s video:826kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.177851% [libx264 @ 0x7fa67401fa00] frame I:2 Avg QP:32.23 size : 20942 [libx264 @ 0x7fa67401fa00] frame P:178 Avg QP:41.03 size : 4515 [libx264 @ 0x7fa67401fa00] mb I I16..4 : 90.1% 0.0% 9.9% [libx264 @ 0x7fa67401fa00] mb P I16..4 : 6.8% 0.0% 0.0% P16..4 : 16.8% 0.6% 0.2% 0.0% 0.0% skip:75.5% [libx264 @ 0x7fa67401fa00] final ratefactor : 37.56 [libx264 @ 0x7fa67401fa00] coded y,uvDC,uvAC intra : 1.2% 16.4% 2.1% inter : 0.1% 3.4% 0.1% [libx264 @ 0x7fa67401fa00] i16 v,h,dc,p : 49% 23% 4% 24% [libx264 @ 0x7fa67401fa00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu : 13% 8% 36% 8% 12% 9% 8% 4% 2% [libx264 @ 0x7fa67401fa00] i8c dc,h,v,p : 88% 6% 5% 1% [libx264 @ 0x7fa67401fa00] ref P L0 : 47.7% 22.0% 16.7% 5.7% 7.9% [libx264 @ 0x7fa67401fa00] kb/s:1126.21
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Timestamp discontinuity issue in HTTP Live Streaming
25 décembre 2014, par user3663917I was trying to do HTTP Live streaming. The segmentation of the files were done using FFMPEG. The segments are of 5 seconds each. In my case every one minute the PCR values of the input "ts" is reset, ie in the segmented files the segments created after every one minute is having a different range of pcr compared to the previous segments(discontinuity in pcr). These segments work fine in apple devices but in android devices the stream gets stuck after one minute. Is there some method to overcome this issue either in the server side or in the android side ?
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Ifdef out an unused variable.
2 septembre 2011, par Ralph GilesIfdef out an unused variable.
Corrects a warning on Apple gcc 4.2.
git-svn-id : http://svn.xiph.org/trunk/vorbis@18077 0101bb08-14d6-0310-b084-bc0e0c8e3800