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Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...) -
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 (...) -
Encodage et transformation en formats lisibles sur Internet
10 avril 2011MediaSPIP transforme et ré-encode les documents mis en ligne afin de les rendre lisibles sur Internet et automatiquement utilisables sans intervention du créateur de contenu.
Les vidéos sont automatiquement encodées dans les formats supportés par HTML5 : MP4, Ogv et WebM. La version "MP4" est également utilisée pour le lecteur flash de secours nécessaire aux anciens navigateurs.
Les documents audios sont également ré-encodés dans les deux formats utilisables par HTML5 :MP3 et Ogg. La version "MP3" (...)
Sur d’autres sites (6910)
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FFmpeg - Merge two images (.png) to video (.mp4) doesn't work
12 juin 2019, par JokoeI want to merge two images (names are not numbered in a sequence) to a video, but the result includes only a video of the first image.
I would appreciate any kind of help !
ffmpeg.exe -r 1/5 -i image_x.png -r 1/5 -i image_y.png -codec:v libx264 -vf fps=50 video.mp4
Output :
Input #0, png_pipe, from
’C :\Users\khj\Desktop\SpeakerLayoutTool\Images_video\iamge_x.png’ :
Duration : N/A, bitrate : N/A
Stream #0:0 : Video : png, rgba(pc), 3840x2160, 25 tbr, 25 tbn, 25 tbc Input #1, png_pipe, from
’C :\Users\khj\Desktop\SpeakerLayoutTool\Images_video\image_y.png’ :
Duration : N/A, bitrate : N/A
Stream #1:0 : Video : png, rgba(pc), 3840x2160, 25 tbr, 25 tbn, 25 tbc File ’C :\Users\khj\Desktop\SpeakerLayoutTool\video.mp4’ already
exists. Overwrite ? [y/N] y Stream mapping : Stream #0:0 -> #0:0 (png
(native) -> h264 (libx264)) Press [q] to stop, [?] for help [libx264 @
0000016c2a46e000] using cpu capabilities : MMX2 SSE2Fast SSSE3 SSE4.2
AVX FMA3 BMI2 AVX2 [libx264 @ 0000016c2a46e000] profile High 4:4:4
Predictive, level 5.2, 4:4:4, 8-bit [libx264 @ 0000016c2a46e000] 264 -
core 157 r2970 5493be8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 -
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=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=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
’C :\Users\khj\Desktop\SpeakerLayoutTool\video.mp4’ : Metadata :
encoder : Lavf58.27.103
Stream #0:0 : Video : h264 (libx264) (avc1 / 0x31637661), yuv444p, 3840x2160, q=-1—1, 50 fps, 12800 tbn, 50 tbc
Metadata :
encoder : Lavc58.52.100 libx264
Side data :
cpb : bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay : -1 frame= 250 fps= 22 q=-1.0 Lsize= 162kB time=00:00:04.94 bitrate=
268.1kbits/s speed=0.444x -
Could not find tag for codec h264 in stream #2 when trim video and add watermark, music background
13 août 2020, par Nguyễn TrọngI'm doing cut video into chunks, then join them and add watermark and background music with the command below.


"[-y, -i, /storage/emulated/0/WhatsApp/Media/WhatsApp Video/VID-20200726-WA0154.mp4, -i, /storage/emulated/0/FXMotion/.cache/.watermark/logo_watermark.png, -stream_loop, -1, -i, /storage/emulated/0/WhatsApp/Media/WhatsApp Documents/DripReport_-_Skechers_(Lyrics)(MP3_160K).mp3, -filter_complex, [1:v]scale=640/4:-1[logo1];[0:v]trim=0:2.483,setpts=PTS-STARTPTS[v1];[0:v]trim=2.483:7.45,setpts=2.0*(PTS-STARTPTS)[v2];[0:v]trim=7.45:9.933,setpts=PTS-STARTPTS[v3];[v1][v2][v3]concat=n=3:v=1[video];[video][logo1]overlay=main_w-overlay_w-10:main_h-overlay_h-10[vw], -map, [vw], -map, 2, -c:v, libx264, -crf, 23, -preset, veryfast, -shortest, /storage/emulated/0/FXMotion/FXMotion-200810e.mp4, -hide_banner]"



But when running I get the following error :



Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/WhatsApp/Media/WhatsApp Video/VID-20200726-WA0154.mp4':\n 
Metadata:
major_brand : mp4v
 minor_version : 0
 compatible_brands: mp4vmp42isom\n Duration: 00:00:09.93, start: 0.000000, bitrate: 2080 kb/s
 Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, unknown/bt470bg/unknown), 640x352, 2078 kb/s, 30 fps, 30 tbr, 90k tbn, 180k tbc (default)
 Metadata:\n rotate : 270
 Side data:
 displaymatrix: rotation of 90.00 degrees\nInput #1, png_pipe, from '/storage/emulated/0/FXMotion/.cache/.watermark/logo_watermark.png':
 Duration: N/A, bitrate: N/A
 Stream #1:0: Video: png, rgba(pc), 335x51, 25 tbr, 25 tbn, 25 tbc
Input #2, mp3, from '/storage/emulated/0/WhatsApp/Media/WhatsApp Documents/DripReport_-_Skechers_(Lyrics)(MP3_160K).mp3':
 Metadata:
 encoder : Lavf57.56.101
 title : DripReport - Skechers (Lyrics)
 artist : DripReport
 album : DripReport\n Duration: 00:01:46.06, start: 0.011021, bitrate: 167 kb/s
 Stream #2:0: Audio: mp3, 48000 Hz, stereo, fltp, 160 kb/s
 Metadata:
 encoder : Lavc57.64
 Stream #2:1: Video: png, rgb24(pc), 400x225, 90k tbr, 90k tbn, 90k tbc (attached pic)
 Metadata:
 title : attached picture
 comment : Cover (front)
Stream mapping:
 Stream #0:0 (h264) -> trim (graph 0)
 Stream #0:0 (h264) -> trim (graph 0)
 Stream #0:0 (h264) -> trim (graph 0)
 Stream #1:0 (png) -> scale (graph 0)
 overlay (graph 0) -> Stream #0:0 (libx264)
 Stream #2:0 -> #0:1 (mp3 (mp3float) -> aac (native))
 Stream #2:1 -> #0:2 (png (native) -> h264 (libx264))
Press [q] to stop, [?] for help\n[graph 0 input from stream 1:0 @ 0x6f73832bc0] sws_param option is deprecated and ignored
[graph 0 input from stream 0:0 @ 0x6f73832c80] sws_param option is deprecated and ignored\n[graph 0 input from stream 0:0 @ 0x6f73833400] sws_param option is deprecated and ignored\n[graph 0 input from stream 0:0 @ 0x6f73833580] sws_param option is deprecated and ignored
[libx264 @ 0x6f44476300] using cpu capabilities: ARMv8 NEON
[libx264 @ 0x6f44476300] profile High, level 3.0, 4:2:0, 8-bit
[libx264 @ 0x6f44476300] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[graph 2 input from stream 2:1 @ 0x6ed501c380] sws_param option is deprecated and ignored
[mp4 @ 0x6ed53b9a00] Frame rate very high for a muxer not efficiently supporting it.
Please consider specifying a lower framerate, a different muxer or -vsync 2\n[libx264 @ 0x6f445de500] MB rate (33750000) > level limit (16711680)
[libx264 @ 0x6f445de500] using cpu capabilities: ARMv8 NEON
[libx264 @ 0x6f445de500] profile High 4:4:4 Predictive, level 6.2, 4:4:4, 8-bit\n[libx264 @ 0x6f445de500] 264 - core 159 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=7 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[mp4 @ 0x6ed53b9a00] Could not find tag for codec h264 in stream #2, codec not currently supported in container\nCould not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:1 --[aac @ 0x6f44478600] Qavg: nan\nConversion failed!",
 
 



i run ffmpeg on :


Device
"os_version" : "10"
"model" : "SM-A217F"
"brand" : "samsung"




How to fix it ? thank advance !


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AAC encoder : Extensive improvements
11 octobre 2015, par Claudio FreireAAC encoder : Extensive improvements
This finalizes merging of the work in the patches in ticket #2686.
Improvements to twoloop and RC logic are extensive.
The non-exhaustive list of twoloop improvments includes :
- Tweaks to distortion limits on the RD optimization phase of twoloop
- Deeper search in twoloop
- PNS information marking to let twoloop decide when to use it
(turned out having the decision made separately wasn’t working)
- Tonal band detection and priorization
- Better band energy conservation rules
- Strict hole avoidanceFor rate control :
- Use psymodel’s bit allocation to allow proper use of the bit
reservoir. Don’t work against the bit reservoir by moving lambda
in the opposite direction when psymodel decides to allocate more/less
bits to a frame.
- Retry the encode if the effective rate lies outside a reasonable
margin of psymodel’s allocation or the selected ABR.
- Log average lambda at the end. Useful info for everyone, but especially
for tuning of the various encoder constants that relate to lambda
feedback.Psy :
- Do not apply lowpass with a FIR filter, instead just let the coder
zero bands above the cutoff. The FIR filter induces group delay,
and while zeroing bands causes ripple, it’s lost in the quantization
noise.
- Experimental VBR bit allocation code
- Tweak automatic lowpass filter threshold to maximize audio bandwidth
at all bitrates while still providing acceptable, stable quality.I/S :
- Phase decision fixes. Unrelated to #2686, but the bugs only surfaced
when the merge was finalized. Measure I/S band energy accounting for
phase, and prevent I/S and M/S from being applied both.PNS :
- Avoid marking short bands with PNS when they’re part of a window
group in which there’s a large variation of energy from one window
to the next. PNS can’t preserve those and the effect is extremely
noticeable.M/S :
- Implement BMLD protection similar to the specified in
ISO-IEC/13818:7-2003, Appendix C Section 6.1. Since M/S decision
doesn’t conform to section 6.1, a different method had to be
implemented, but should provide equivalent protection.
- Move the decision logic closer to the method specified in
ISO-IEC/13818:7-2003, Appendix C Section 6.1. Specifically,
make sure M/S needs less bits than dual stereo.
- Don’t apply M/S in bands that are using I/SNow, this of course needed adjustments in the compare targets and
fuzz factors of the AAC encoder’s fate tests, but if wondering why
the targets go up (more distortion), consider the previous coder
was using too many bits on LF content (far more than required by
psy), and thus those signals will now be more distorted, not less.The extra distortion isn’t audible though, I carried extensive
ABX testing to make sure.A very similar patch was also extensively tested by Kamendo2 in
the context of #2686.- [DH] Changelog
- [DH] libavcodec/aac.h
- [DH] libavcodec/aaccoder.c
- [DH] libavcodec/aaccoder_trellis.h
- [DH] libavcodec/aaccoder_twoloop.h
- [DH] libavcodec/aacenc.c
- [DH] libavcodec/aacenc.h
- [DH] libavcodec/aacenc_is.c
- [DH] libavcodec/aacenc_is.h
- [DH] libavcodec/aacenc_pred.c
- [DH] libavcodec/aacenc_quantization.h
- [DH] libavcodec/aacenc_utils.h
- [DH] libavcodec/aacpsy.c
- [DH] libavcodec/mathops.h
- [DH] libavcodec/mips/aaccoder_mips.c
- [DH] libavcodec/psymodel.c
- [DH] libavcodec/psymodel.h
- [DH] tests/fate/aac.mak