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Médias (1)
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The pirate bay depuis la Belgique
1er avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (105)
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Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Formulaire personnalisable
21 juin 2013, parCette page présente les champs disponibles dans le formulaire de publication d’un média et il indique les différents champs qu’on peut ajouter. Formulaire de création d’un Media
Dans le cas d’un document de type média, les champs proposés par défaut sont : Texte Activer/Désactiver le forum ( on peut désactiver l’invite au commentaire pour chaque article ) Licence Ajout/suppression d’auteurs Tags
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire. (...) -
Qu’est ce qu’un masque de formulaire
13 juin 2013, parUn masque de formulaire consiste en la personnalisation du formulaire de mise en ligne des médias, rubriques, actualités, éditoriaux et liens vers des sites.
Chaque formulaire de publication d’objet peut donc être personnalisé.
Pour accéder à la personnalisation des champs de formulaires, il est nécessaire d’aller dans l’administration de votre MediaSPIP puis de sélectionner "Configuration des masques de formulaires".
Sélectionnez ensuite le formulaire à modifier en cliquant sur sont type d’objet. (...)
Sur d’autres sites (9756)
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Firefox doesn't play mp4 file in HTML5 video
21 janvier 2016, par DeveloperI recorded a video with my mobile which had the format ".mp4". Now if I load that video in HTML5 video tag, I get an error
HTTP "Content-Type" of "video/3gpp" is not supported.Why does Firefox consider the file as3gppalthough it is anmp4file ?
If I log the file properties when it is loaded on to browser, I see the following{ name: "test.mp4", lastModified: 1434536249000, lastModifiedDate: Date 2015-06-17T10:17:29.000Z, size: 41151959, type: "video/mp4" }This means firefox identifies the type as
mp4only. But doesn’t play it giving the errorHTTP "Content-Type" of "video/3gpp" is not supported. -
FFmpeg - mapping 4 audio channels to 1 audio track
18 juillet 2016, par AvalonI have two QT MOV’s that I want to concatenate using FFmpeg, but I am having trouble understanding how to map the audio channels.
First MOV has 2 channels, Front Left and Front Right. Second MOV has 4 channels, Front Left, Front Right, Side Left and Side Right.
How do I create 1 audio track with 4 channels mapped as FL, FR, SL and SR ?
MediaInfo reports the following (not desired result) :
Audio #1
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 126 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 4.14 MiB (12%)
Default : Yes
Alternate group : 1
Audio #2
ID : 3
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 127 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 4.18 MiB (12%)
Default : No
Alternate group : 1
Audio #3
ID : 4
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 110 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 3.62 MiB (10%)
Default : No
Alternate group : 1
Audio #4
ID : 5
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 110 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 3.61 MiB (10%)
Default : No
Alternate group : 1FFmpeg command is as follows :
`ffmpeg -i "2chan.mov" -i "4chan.mov" -filter_complex "[0:v] [0:a] [1:v] [1:a] concat=n=2:v=1:a=1 [v] [a]; [v]scale=-1:288[v2]; [a]channelsplit=channel_layout=quad(side)[FL][FR][SL][SR]" -map "[v2]" -map "[FL]" -map "[FR]" -map "[SL]" -map "[SR]" -c:v libx264 -pix_fmt yuv420p -b:v 700k -minrate 700k -maxrate 700k -bufsize 700k -r 25 -sc_threshold 25 -keyint_min 25 -g 25 -qmin 3 -qmax 51 -threads 8 -c:a aac -strict -2 -b:a 160k -ar 48000 -async 1 -ac 4 combined.mp4`Console output :
ffmpeg version N-77883-gd7c75a5 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
--enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --
enable-lzma --enable-decklink --enable-zlib
libavutil 55. 13.100 / 55. 13.100
libavcodec 57. 22.100 / 57. 22.100
libavformat 57. 21.101 / 57. 21.101
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 25.100 / 6. 25.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0000000000575c00] ignoring 'frma' atom of 'mp4a', str
eam format is 'mp4a'
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2chan.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2016-01-19 05:48:38
Duration: 00:00:45.00, start: 0.000000, bitrate: 364 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte1
70m/smpte170m/bt709), 768x576, 196 kb/s, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 25 tbn
, 50 tbc (default)
Metadata:
creation_time : 2016-01-19 05:48:40
handler_name : Apple Alias Data Handler
encoder : H.264
timecode : 00:00:00:00
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, flt
p, 159 kb/s (default)
Metadata:
creation_time : 2016-01-19 05:48:42
handler_name : Apple Alias Data Handler
timecode : 00:00:00:00
Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2016-01-19 05:49:42
handler_name : Apple Alias Data Handler
timecode : 00:00:00:00
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000005da420] ignoring 'frma' atom of 'mp4a', str
eam format is 'mp4a'
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '4chan.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2016-01-19 04:11:52
Duration: 00:19:58.00, start: 0.000000, bitrate: 5118 kb/s
Stream #1:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte1
70m/smpte170m/bt709), 768x576, 4955 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc (defa
ult)
Metadata:
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
encoder : H.264
timecode : 00:28:33:21
Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, quad, fltp,
157 kb/s (default)
Metadata:
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
Stream #1:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
Metadata:
rotate : 0
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
timecode : 00:28:33:21
File 'Output_Complex_6.mp4' already exists. Overwrite ? [y/N] y
-async is forwarded to lavfi similarly to -af aresample=async=1:min_hard_comp=0.
100000:first_pts=0.
Last message repeated 1 times
[libx264 @ 000000000057d260] using SAR=1/1
[libx264 @ 000000000057d260] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
SlowShuffle
[libx264 @ 000000000057d260] profile High, level 2.1
[libx264 @ 000000000057d260] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC cod
ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r
ef=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_pski
p=1 chroma_qp_offset=-2 threads=8 lookahead_threads=1 sliced_threads=0 nr=0 deci
mate=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=25 keyint_min=13
scenecut=25 intra_refresh=0 rc_lookahead=25 rc=cbr mbtree=1 bitrate=700 ratetol
=1.0 qcomp=0.60 qpmin=3 qpmax=51 qpstep=4 vbv_maxrate=700 vbv_bufsize=700 nal_hr
d=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'Output_Complex_6.mp4':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
title : TestTitle
encoder : Lavf57.21.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 384x28
8 [SAR 1:1 DAR 4:3], q=3-51, 700 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.22.100 libx264
Side data:
unknown side data type 10 (24 bytes)
Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:2: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:3: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:4: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream mapping:
Stream #0:0 (h264) -> concat:in0:v0
Stream #0:1 (aac) -> concat:in0:a0
Stream #1:0 (h264) -> concat:in1:v0
Stream #1:1 (aac) -> concat:in1:a0
scale -> Stream #0:0 (libx264)
channelsplit:FL -> Stream #0:1 (aac)
channelsplit:FR -> Stream #0:2 (aac)
channelsplit:SL -> Stream #0:3 (aac)
channelsplit:SR -> Stream #0:4 (aac)
Press [q] to stop, [?] for help
frame= 85 fps=0.0 q=3.0 size= 6kB time=00:00:02.68 bitrate= 18.8kbits/s
frame= 150 fps=148 q=3.0 size= 14kB time=00:00:05.24 bitrate= 21.3kbits/s
frame= 198 fps=130 q=3.0 size= 65kB time=00:00:07.21 bitrate= 74.4kbits/s
frame= 238 fps=118 q=3.0 size= 125kB time=00:00:08.78 bitrate= 116.2kbits/s
frame= 271 fps=108 q=3.0 size= 171kB time=00:00:10.09 bitrate= 138.9kbits/s
frame= 304 fps=100 q=3.0 size= 218kB time=00:00:11.45 bitrate= 156.0kbits/s
frame= 339 fps= 96 q=3.0 size= 268kB time=00:00:12.84 bitrate= 171.0kbits/s
frame= 372 fps= 93 q=-1.0 Lsize= 376kB time=00:00:14.80 bitrate= 208.0kbits
/s speed=3.69x
video:27kB audio:319kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 8.551113%
[libx264 @ 000000000057d260] frame I:15 Avg QP: 3.01 size: 1370
[libx264 @ 000000000057d260] frame P:90 Avg QP: 3.00 size: 24
[libx264 @ 000000000057d260] frame B:267 Avg QP: 3.00 size: 17
[libx264 @ 000000000057d260] consecutive B-frames: 4.3% 0.0% 0.0% 95.7%
[libx264 @ 000000000057d260] mb I I16..4: 95.8% 0.0% 4.2%
[libx264 @ 000000000057d260] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.1% 0.0
% 0.0% 0.0% 0.0% skip:99.9%
[libx264 @ 000000000057d260] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0% 0.0
% 0.0% direct: 0.0% skip:100.0% L0: 0.0% L1:100.0% BI: 0.0%
[libx264 @ 000000000057d260] 8x8 transform intra:0.0% inter:50.0%
[libx264 @ 000000000057d260] coded y,uvDC,uvAC intra: 3.1% 8.8% 8.2% inter: 0.0%
0.0% 0.0%
[libx264 @ 000000000057d260] i16 v,h,dc,p: 90% 5% 5% 0%
[libx264 @ 000000000057d260] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 46% 29% 23% 0% 0%
0% 0% 0% 0%
[libx264 @ 000000000057d260] i8c dc,h,v,p: 76% 7% 17% 0%
[libx264 @ 000000000057d260] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000000000057d260] kb/s:14.64
[aac @ 0000000000578320] Qavg: 65394.652
[aac @ 0000000000593020] Qavg: 65473.359
[aac @ 0000000000593940] Qavg: 65536.000
[aac @ 0000000000594260] Qavg: 65536.000
Exiting normally, received signal 2.
Terminate batch job (Y/N)? Y -
Convert PNGs to webm video with transparency
20 septembre 2016, par sebastianI would like to use
avconvto convert a series of PNG images to a WebM video, preserving transparency.I understand that the pixel format used in the output video must support transparency. So I tried :
$ avconv -framerate 25 -f image2 -i frames/%03d.png -pix_fmt yuva420p output.webm
Unfortunately,
avconvcomplains :Incompatible pixel format 'yuva420p' for codec 'libvpx-vp9', auto-selecting format 'yuv420p'I am using
ffmpeg version 2.8.4-1+b1 Copyright (c) 2000-2015 the FFmpeg developers.
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