
Recherche avancée
Médias (1)
-
Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (111)
-
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 (...) -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras. -
Que fait exactement ce script ?
18 janvier 2011, parCe script est écrit en bash. Il est donc facilement utilisable sur n’importe quel serveur.
Il n’est compatible qu’avec une liste de distributions précises (voir Liste des distributions compatibles).
Installation de dépendances de MediaSPIP
Son rôle principal est d’installer l’ensemble des dépendances logicielles nécessaires coté serveur à savoir :
Les outils de base pour pouvoir installer le reste des dépendances Les outils de développements : build-essential (via APT depuis les dépôts officiels) ; (...)
Sur d’autres sites (8140)
-
avconv on debian jessie throws error when trying to convert raw video to mp4
20 août 2017, par Vinay DivakarI am trying to convert a raw video captured using a Logitech USB Cam(YUYV) to mp4 using avconv. I have tried the below to do so :
avconv -i out.raw -c copy output.mp4
avconv -i out.raw -vcodec copy -acodec copy output.mp4but I get an error as shown below.
root@beaglebone:~/BBB_CV/boneCV# avconv -i out.raw -c copy output.mp4
avconv version 11.9-6:11.9-1~deb8u1, Copyright (c) 2000-2017 the Libav developersbuilt on Apr 23 2017 23:00:54 with gcc 4.9.2 (Debian 4.9.2-10)
out.raw: Invalid data found when processing inputI have checked here, but did not find any relevant examples for the above purpose.
Edit : Added more details—
I tried doing the below by adding the infile options as suggested :
root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt yuyv422 -f rawvideo -i out.raw -c copy output.mp4
This got me rid of the previous error and some new ones popped up as shown below.
root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt yuyv422 -f rawvideo -i out.raw -c copy output.mp4
avconv version 11.9-6:11.9-1~deb8u1, Copyright (c) 2000-2017 the Libav
developers built on Apr 23 2017 23:00:54 with gcc 4.9.2 (Debian 4.9.2-10)
[rawvideo @ 0x17e21c0] Estimating duration from bitrate, this may be inaccurate
Input #0, rawvideo, from 'out.raw':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0.0: Video: rawvideo, yuyv422, 640x480, 30 tbn
[mp4 @ 0x17eb840] Codec for stream 0 does not use global headers but
container format requires global headers
[mp4 @ 0x17eb840] track 0: could not find tag, codec not currently
supported in container
Output #0, mp4, to 'output.mp4':
Metadata:
encoder : Lavf56.1.0
Stream #0.0: Video: rawvideo, yuyv422, 640x480, q=2-31, 30 tbn, 30 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Could not write header for output file #0 (incorrect codec parameters ?):
Operation not permittedThe output.mp4 is being generated but when tried to open it throws an error.
Edit : I ran a "sudo apt-get install libav-tools" an then tried. This is what I got.
root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt
yuyv422 -f rawvideo -i out.raw -c copy output.mp4
ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-
strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro'
-cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-
nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-
libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-
libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-
libvpx --enable-libschroedinger --disable-encoder=libschroedinger --
enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter -
enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-
libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/arm-linux-gnueabihf -
-disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-
frei0r --enable-openssl --enable-libass --enable-libopus --enable-
fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --
disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample
--disable-htmlpages --disable-podpages --enable-libutvideo --enable-
libfdk-aac --enable-libx265 --enable-libiec61883 --enable-libdc1394 --
disable-altivec --shlibdir=/usr/lib/arm-linux-gnueabihf
libavutil 54. 20.100 / 54. 20.100
libavcodec 56. 26.100 / 56. 26.100
libavformat 56. 25.101 / 56. 25.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 11.102 / 5. 11.102
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
[rawvideo @ 0x18465e0] Estimating duration from bitrate, this may be
inaccurate
Input #0, rawvideo, from 'out.raw':
Duration: 00:00:00.10, start: 0.000000, bitrate: 146626 kb/s
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456
kb/s, 30 tbr, 30 tbn, 30 tbc
[mp4 @ 0x184f790] Could not find tag for codec rawvideo in stream #0,
codec not currently supported in container
Output #0, mp4, to 'output.mp4':
Metadata:
encoder : Lavf56.25.101
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, q=2-
31, 147456 kb/s, 30 tbr, 30 tbn, 30 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Could not write header for output file #0 (incorrect codec parameters ?):
Invalid argumentI ran "ffmpeg -s 640x480 -framerate 30 -pix_fmt yuv420p -f rawvideo -i out.raw output.mp4" and below is what I got.
root@beaglebone:~/BBB_CV/boneCV# ffmpeg -s 640x480 -framerate 30 -pix_fmt yuv420p -f rawvideo -i out.raw output.mp4
ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/arm-linux-gnueabihf --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/arm-linux-gnueabihf
libavutil 54. 20.100 / 54. 20.100
libavcodec 56. 26.100 / 56. 26.100
libavformat 56. 25.101 / 56. 25.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 11.102 / 5. 11.102
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
[rawvideo @ 0x1d55e0] Estimating duration from bitrate, this may be inaccurate
Input #0, rawvideo, from 'out.raw':
Duration: 00:00:00.13, start: 0.000000, bitrate: 109969 kb/s
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 640x480, 110592 kb/s, 30 tbr, 30 tbn, 30 tbc
[libx264 @ 0x1df6c0] using cpu capabilities: ARMv6 NEON
[libx264 @ 0x1df6c0] profile High, level 3.0
[libx264 @ 0x1df6c0] 264 - core 146 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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 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=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 'output.mp4':
Metadata:
encoder : Lavf56.25.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480, q=-1--1, 30 fps, 15360 tbn, 30 tbc
Metadata:
encoder : Lavc56.26.100 libx264
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[rawvideo @ 0x1de3a0] Invalid buffer size, packet size 450428 < expected frame_size 460800
Error while decoding stream #0:0: Invalid argument
frame= 3 fps=1.7 q=29.0 Lsize= 263kB time=00:00:00.03 bitrate=64692.6kbits/s
video:262kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.318205%
[libx264 @ 0x1df6c0] frame I:1 Avg QP:33.09 size:100676
[libx264 @ 0x1df6c0] frame P:2 Avg QP:32.99 size: 83672
[libx264 @ 0x1df6c0] mb I I16..4: 0.0% 95.4% 4.6%
[libx264 @ 0x1df6c0] mb P I16..4: 0.0% 45.7% 3.0% P16..4: 35.9% 10.7% 4.8% 0.0% 0.0% skip: 0.0%
[libx264 @ 0x1df6c0] 8x8 transform intra:94.6% inter:86.1%
[libx264 @ 0x1df6c0] coded y,uvDC,uvAC intra: 100.0% 100.0% 100.0% inter: 53.6% 100.0% 100.0%
[libx264 @ 0x1df6c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 56% 12% 24% 2% 0% 1% 1% 2% 3%
[libx264 @ 0x1df6c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 82% 11% 4% 0% 0% 0% 1% 0% 1%
[libx264 @ 0x1df6c0] i8c dc,h,v,p: 48% 30% 14% 7%
[libx264 @ 0x1df6c0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1df6c0] ref P L0: 83.5% 7.9% 8.6%
[libx264 @ 0x1df6c0] kb/s:21441.60 -
installing x264 0.120 for redhat el7
16 août 2017, par Mohammad Alkhaldiim trying to install x264 for redhat el7
i cloned it from github then compiled it and installed
this is the clone link :http://git.videolan.org/git/x264.git
when i run x264 —version it gives me this output
x264 0.148.x
built on Aug 16 2017, gcc : 4.8.5 20150623 (Red Hat 4.8.5-11)
x264 configuration : —bit-depth=8 —chroma-format=all
libx264 configuration : —bit-depth=8 —chroma-format=all
x264 license : GPL version 2 or lateri need x264 0.120 for installing x264-plugins-ugly
Thank you in advance.
-
ffmpeg conversion to mpeg2video
19 novembre 2013, par spicyramenNeed to play some video files from a Cisco DMP, and need to use mpeg2video for video and mp2 for audio.
Im using ffmpeg -i to verify video format.
This video plays correctly :
Input #0, mpeg, from 'ATT_Telepresence_Scheduling.mpg':
Duration: 00:07:14.08, start: 0.522456, bitrate: 474 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 600x340 [SAR 1:1 DAR 30:17], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16p, 128 kb/sThis video does not play(Black screen) :
Input #0, mpegts, from 'Telepresence_part2.ts':
Duration: 00:02:32.83, start: 1.000000, bitrate: 8783 kb/s
Program 1
Stream #0:0[0x45]: Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 163 kb/s
Stream #0:1[0x44]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 29.92 fps, 29.92 tbr, 90k tbn, 59.82 tbcHow to perform the conversion to mpeg and to video mpeg2video and audio mp2 and preserve HD quality ?