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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (68)
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Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Librairies et binaires spécifiques au traitement vidéo et sonore
31 janvier 2010, parLes logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
Binaires complémentaires et facultatifs flvtool2 : (...)
Sur d’autres sites (5003)
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ffmpeg mp4 to mpeg and back again
5 décembre 2012, par bruxI am concatenating mp4 files, from research I have found out you must first encode to mpeg and contatenate those, then convert the larger mpeg file back to mp4.
For simplicity I am just attempting to convert a.mp4 to mpeg and then back to mp4 (i dont need to worry about the concatenation for now)
Here is how I first convert to my intermediary mpeg from mp4 :
ffmpeg -i a.mp4 -q:v 2 -vcodec mpeg2video -acodec copy b.mpg
The file is encoded with no errors, to convert back to mp4 I do :
ffmpeg -i b.mpg -vcodec libx264 -acodec copy out.mp4
Everything seems to work with no errors but out.mp4 just plays the first few frames and then freezes, and the time is skipping randomly as the duration passes for the file. No sound is heard also.
*****************************************
Here is the output of the first command
*****************************************
$ ffmpeg -i a.mp4 -q:v 2 -vcodec mpeg2video -acodec copy b.mpg
ffmpeg version 0.9, Copyright (c) 2000-2011 the FFmpeg developers
built on Jun 12 2012 20:43:50 with gcc 4.4.3
configuration: --enable-cross-compile --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/org.witness.sscvideoproto --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi- --sysroot=/home/n8fr8/dev/android/ndk/platforms/android-3/arch-arm --enable-version3 --enable-gpl --enable-small --enable-memalign-hack --disable-yasm --disable-doc --enable-decoder=mjpeg --enable-decoder=rawvideo --enable-encoder=libx264 --enable-muxer=mp4 --enable-demuxer=image2 --enable-demuxer=mjpeg --enable-demuxer=mp4 --enable-demuxer=mov --enable-parser=mjpeg --enable-filter=buffer --enable-filter=buffersink --enable-filter=drawbox --enable-filter=overlay --enable-filter=redact --enable-protocol=file --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib --extra-cflags=-I../x264 --extra-ldflags=-L../x264 --disabl libavutil 51. 32. 0 / 51. 32. 0
libavcodec 53. 42. 0 / 53. 42. 0
libavformat 53. 24. 0 / 53. 24. 0
libavfilter 2. 53. 0 / 2. 53. 0
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0xb05a90] multiple edit list entries, a/v desync might occur, patch welcome
Seems stream 1 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 43.08 (517/12)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'j.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 1946-12-04 21:52:33
Duration: 00:00:05.31, start: 0.000000, bitrate: 1584 kb/s
Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 16000 Hz, mono, s16, 96 kb/s
Metadata:
creation_time : 1946-12-04 21:52:33
handler_name : SoundHandle
Stream #0:1(eng): Video: h264 (avc1 / 0x31637661), yuv420p, 720x480, 1599 kb/s, SAR 65536:65536 DAR 3:2, 13.97 fps, 43.08 tbr, 90k tbn, 180k tbc
Metadata:
creation_time : 1946-12-04 21:52:33
handler_name : VideoHandle
[buffer @ 0xb247f0] w:720 h:480 pixfmt:yuv420p tb:1/1000000 sar:65536/65536 sws_param:
[mpeg @ 0xb23d10] VBV buffer size not set, muxing may fail
Output #0, mpeg, to 'out.mpg':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 1946-12-04 21:52:33
encoder : Lavf53.24.0
Stream #0:0(eng): Video: mpeg2video, yuv420p, 720x480 [SAR 65536:65536 DAR 3:2], q=2-31, 200 kb/s, 90k tbn, 50 tbc
Metadata:
creation_time : 1946-12-04 21:52:33
handler_name : VideoHandle
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 16000 Hz, mono, 96 kb/s
Metadata:
creation_time : 1946-12-04 21:52:33
handler_name : SoundHandle
Stream mapping:
Stream #0:1 -> #0:0 (h264 -> mpeg2video)
Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 20 fps= 0 q=0.0 size= 14kB time=00:00:00.38 bitrate= 301.8kbits/s dup=15 frame= 34 fps= 28 q=0.0 size= 132kB time=00:00:00.66 bitrate=1638.4kbits/s dup=25 frame= 45 fps= 25 q=0.0 size= 230kB time=00:00:00.88 bitrate=2141.1kbits/s dup=33 frame= 55 fps= 22 q=0.0 size= 294kB time=00:00:01.08 bitrate=2230.0kbits/s dup=40 frame= 66 fps= 21 q=0.0 size= 306kB time=00:00:01.21 bitrate=2061.5kbits/s dup=48 frame= 79 fps= 21 q=0.0 size= 436kB time=00:00:01.56 bitrate=2289.6kbits/s dup=57 frame= 88 fps= 20 q=0.0 size= 514kB time=00:00:01.74 bitrate=2419.9kbits/s dup=63 frame= 100 fps= 21 q=0.0 size= 584kB time=00:00:01.98 bitrate=2416.2kbits/s dup=71 frame= 110 fps= 20 q=0.0 size= 618kB time=00:00:02.17 bitrate=2326.6kbits/s dup=78 frame= 116 fps= 19 q=0.0 size= 650kB time=00:00:02.24 bitrate=2377.1kbits/s dup=82 frame= 132 fps= 20 q=0.0 size= 830kB time=00:00:02.62 bitrate=2595.2kbits/s dup=94 frame= 144 fps= 20 q=0.0 size= 904kB time=00:00:02.86 bitrate=2589.4kbits/s dup=103frame= 156 fps= 20 q=0.0 size= 970kB time=00:00:03.10 bitrate=2563.3kbits/s dup=112frame= 168 fps= 20 q=0.0 size= 1006kB time=00:00:03.20 bitrate=2575.4kbits/s dup=121frame= 179 fps= 20 q=0.0 size= 1138kB time=00:00:03.56 bitrate=2618.7kbits/s dup=129frame= 191 fps= 20 q=0.0 size= 1240kB time=00:00:03.80 bitrate=2673.2kbits/s dup=138frame= 203 fps= 20 q=0.0 size= 1342kB time=00:00:04.04 bitrate=2721.2kbits/s dup=147frame= 215 fps= 20 q=0.0 size= 1426kB time=00:00:04.22 bitrate=2765.6kbits/s dup=156frame= 227 fps= 20 q=0.0 size= 1536kB time=00:00:04.52 bitrate=2783.8kbits/s dup=165frame= 239 fps= 20 q=0.0 size= 1646kB time=00:00:04.76 bitrate=2832.8kbits/s dup=174frame= 248 fps= 20 q=0.0 size= 1726kB time=00:00:04.94 bitrate=2862.2kbits/s dup=181frame= 248 fps= 19 q=0.0 Lsize= 1738kB time=00:00:04.94 bitrate=2882.1kbits/s dup=181 drop=0
video:1665kB audio:62kB global headers:0kB muxing overhead 0.639219%
*****************************************
Here is the output of the second command
*****************************************
$ ffmpeg -i out.mpg -vcodec libx264 -acodec copy out1.mp4
ffmpeg version 0.9, Copyright (c) 2000-2011 the FFmpeg developers
built on Jun 12 2012 20:43:50 with gcc 4.4.3
configuration: --enable-cross-compile --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/org.witness.sscvideoproto --enable-pic --disable-shared --enable-static --cross-prefix=/home/n8fr8/dev/android/ndk/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi- --sysroot=/home/n8fr8/dev/android/ndk/platforms/android-3/arch-arm --enable-version3 --enable-gpl --enable-small --enable-memalign-hack --disable-yasm --disable-doc --enable-decoder=mjpeg --enable-decoder=rawvideo --enable-encoder=libx264 --enable-muxer=mp4 --enable-demuxer=image2 --enable-demuxer=mjpeg --enable-demuxer=mp4 --enable-demuxer=mov --enable-parser=mjpeg --enable-filter=buffer --enable-filter=buffersink --enable-filter=drawbox --enable-filter=overlay --enable-filter=redact --enable-protocol=file --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib --extra-cflags=-I../x264 --extra-ldflags=-L../x264 --disabl libavutil 51. 32. 0 / 51. 32. 0
libavcodec 53. 42. 0 / 53. 42. 0
libavformat 53. 24. 0 / 53. 24. 0
libavfilter 2. 53. 0 / 2. 53. 0
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
[mp1 @ 0xb0d420] Header missing
Last message repeated 8 times
[mpeg @ 0xb05a90] Could not find codec parameters (Audio: mp3, 0 channels, s16)
Input #0, mpeg, from 'out.mpg':
Duration: 00:00:05.24, start: 1.000000, bitrate: 2712 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video, yuv420p, 720x480 [SAR 1:1 DAR 3:2], 104857 kb/s, 50 fps, 50 tbr, 90k tbn, 100 tbc
Stream #0:1[0x1c0]: Audio: mp3, 0 channels, s16
[buffer @ 0xb77ca0] w:720 h:480 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
[libx264 @ 0xb0c6e0] using SAR=1/1
[libx264 @ 0xb0c6e0] using cpu capabilities: ARMv6 NEON
[libx264 @ 0xb0c6e0] profile High, level 3.1
[libx264 @ 0xb0c6e0] 264 - core 119 r2113 cc129ad - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - 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=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 'out1.mp4':
Metadata:
encoder : Lavf53.24.0
Stream #0:0: Video: h264 (![0][0][0] / 0x0021), yuv420p, 720x480 [SAR 1:1 DAR 3:2], q=-1--1, 50 tbn, 50 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mpeg2video -> libx264)
Press [q] to stop, [?] for help
frame= 248 fps= 3 q=31.0 Lsize= 419kB time=00:00:04.92 bitrate= 697.5kbits/s
video:415kB audio:0kB global headers:0kB muxing overhead 0.863133%
[libx264 @ 0xb0c6e0] frame I:3 Avg QP:16.46 size: 3927
[libx264 @ 0xb0c6e0] frame P:102 Avg QP:22.91 size: 3884
[libx264 @ 0xb0c6e0] frame B:143 Avg QP:27.16 size: 116
[libx264 @ 0xb0c6e0] consecutive B-frames: 18.1% 8.9% 18.1% 54.8%
[libx264 @ 0xb0c6e0] mb I I16..4: 56.3% 42.7% 1.0%
[libx264 @ 0xb0c6e0] mb P I16..4: 6.1% 9.9% 0.6% P16..4: 33.2% 4.9% 2.2% 0.0% 0.0% skip:43.1%
[libx264 @ 0xb0c6e0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 6.7% 0.0% 0.0% direct: 0.1% skip:93.2% L0:53.5% L1:45.4% BI: 1.2%
[libx264 @ 0xb0c6e0] 8x8 transform intra:57.0% inter:85.5%
[libx264 @ 0xb0c6e0] coded y,uvDC,uvAC intra: 36.0% 71.6% 24.9% inter: 4.4% 11.6% 0.6%
[libx264 @ 0xb0c6e0] i16 v,h,dc,p: 35% 21% 10% 34%
[libx264 @ 0xb0c6e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 22% 34% 3% 3% 4% 2% 4% 5%
[libx264 @ 0xb0c6e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 19% 11% 4% 12% 12% 7% 5% 6%
[libx264 @ 0xb0c6e0] i8c dc,h,v,p: 49% 22% 22% 7%
[libx264 @ 0xb0c6e0] Weighted P-Frames: Y:2.9% UV:2.0%
[libx264 @ 0xb0c6e0] ref P L0: 79.5% 8.1% 9.8% 2.5% 0.0%
[libx264 @ 0xb0c6e0] ref B L0: 91.9% 7.5% 0.6%
[libx264 @ 0xb0c6e0] ref B L1: 94.8% 5.2%
[libx264 @ 0xb0c6e0] kb/s:684.84 -
Anomalie #2926 (Commentaire) : Affichage des mots clés en fonction de l’attribution
8 janvier 2013, par Fil Upon ne peut pas mettre des statuts "en dur dans le code" comme ça ; il faut que tu proposes un patch qui appelle l’API autoriser, soit à travers la fonction autoriser(), soit à travers la balise #AUTORISER
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Bring libogg's configure.in into the 21st century.
8 janvier 2013, par Tim TerriberryBring libogg's configure.in into the 21st century.
Patch by Ron Lee.
git-svn-id : http://svn.xiph.org/trunk/theora@18761 0101bb08-14d6-0310-b084-bc0e0c8e3800