
Recherche avancée
Autres articles (111)
-
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
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 (...) -
Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
Sur d’autres sites (11307)
-
Why do .bss/.rodata symbols stay in binary after strip ?
15 novembre 2014, par BlahGeekAs far as I know, there’s only one kind of symbols in executable binary that is really needed, which is dynamic symbols. These symbols is used in relocation operation because they are dynamic linked. Static linked functions/variables, in the other hand, is not needed so can be stripped.
However, when I was examining the stripped
ffmpeg
binary, this is what I got :>nm -D ffmpeg
...
U __vfprintf_chk
U __vsnprintf_chk
U write
00000000018fa880 B x264_cabac_contexts
0000000001052a40 R x264_cabac_range_lps
0000000001052940 R x264_cabac_transition
0000000001970580 B x264_cabac_transition_unary
0000000001056820 R x264_last_coeff_flag_offset
0000000001056860 R x264_significant_coeff_flag_offset
0000000001056900 R x264_significant_coeff_flag_offset_8x8
U __xpg_strerror_r
U __xstat64
...I can verify that libx264 is static linked to ffmpeg :
> ldd ffmpeg
linux-vdso.so.1 => (0x00007fff26d61000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f7c707e7000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7c704e1000)
liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f7c702be000)
libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f7c700ae000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f7c6fe95000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f7c6fc76000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f7c6f8b0000)
/lib64/ld-linux-x86-64.so.2 (0x00007f7c70b0a000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7c6f69a000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f7c6f495000)So, I don’t understand why symbols like
x264_cabac_contexts
is not stripped. (It’s defined in libx264/.../cabac.c) :uint8_t x264_cabac_contexts[4][QP_MAX_SPEC+1][1024];
It bothered me for several hours and I’ve found nothing on google... Hope someone would explain this... Thanks in advance !
-
Creating a recursive ffmpeg converter
23 novembre 2014, par Joe HealeyI’m trying to create a script of some sort that will convert any video files it detects within a folder (also scanning subfolders), to an .avi file of the same name, in the same place, then remove the original file. I’ve not really used cmd much for any programming/scripting so I’m stumbling over what I suspect is some pretty simple syntax issues.
If anyone is familiar with encoding and ffmpeg, please point out whether the encoding options are wrong (I’m stumbling about in the dark at the moment).
Using this thread, I’m working with something currently resembling :
dir/b/s *.(mkv|mp4|m4v|wmv) >listing.txt #Make a list of all the files with certain extensions, for reading.
for /F "delims=;" %%F in (listing.txt) do ffmpeg.exe -i "%%F" -c:v libx264 -preset slow -crf 20 -c:a libvo_aacenc -b:a 128k "%%~na.avi"
#Then to delete original files
for /F "delims=;" %%F in (listing.txt) do del %%F
del listing.txtThe first issue I have is that I’d like to be able to populate the list with all the common video types. I’m imagining cmd has some syntax similar to perl string matching e.g.
A(B|C)
would match AB and AC that I could mimic for matching any video file extension ? (I’ve written it in the code above to illustrate the point but I know it doesn’t work).I hope that is enough to try and illustrate what I’m attempting.
-
stream FFMPEG clients on webserver [closed]
19 septembre 2020, par Pierrei tried to make a picture that sums up what i want to do.
I hope you understand :)
protocol operation


please guide me
the best of the best would be not to open ports !
clients sending their FFMPEG stream (h264) —> server who interprets them —> front-end which displays all the video streams (php nodejs..)
Thanks x)