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Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community. -
Configuration spécifique pour PHP5
4 février 2011, parPHP5 est obligatoire, vous pouvez l’installer en suivant ce tutoriel spécifique.
Il est recommandé dans un premier temps de désactiver le safe_mode, cependant, s’il est correctement configuré et que les binaires nécessaires sont accessibles, MediaSPIP devrait fonctionner correctement avec le safe_mode activé.
Modules spécifiques
Il est nécessaire d’installer certains modules PHP spécifiques, via le gestionnaire de paquet de votre distribution ou manuellement : php5-mysql pour la connectivité avec la (...) -
Déploiements possibles
31 janvier 2010, parDeux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
Version mono serveur
La version mono serveur consiste à n’utiliser qu’une (...)
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Encoding of two full hd streams in Linux + GPU with Intel HD4000 / VA API / FFMPEG / OpenGL
30 juin 2016, par qknighti want to encode/stream two full hd streams in realtime from my laptop to a remote location using linux/xorg on the host.
VA API
for this i’ve been playing with the VA API but the performance is pretty bad with 5.59 fps (see paste below).
FFMPEG
using ffmpeg with CPU encoding i get about 200 fps but then all cores of my Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz are busy and the fan turns on.
future plans
i want GPU support in encoding and later integrate this into a program which streams a virtual xorg ’screen’, see https://lastlog.de/wiki/index.php/Raspberry_PI_virtual_screen for more details on my plans.
maybe h264 isn’t even what i want ? so if someone advices towards a different implementation, i’d welcome that.
besides VA API there seems to be QuickSync but i didn’t experiment with that yet as it is not packaged on NixOS just yet.
note : i need a library to have a smooth integration into the code.
h264encode -w 1920 -h 1080 —profile MPSource frame is 1920x1080 and will code clip to 1920x1088 with crop
INPUT:Try to encode H264...
INPUT : Resolution : 1920x1080, 60 frames
INPUT : FrameRate : 30
INPUT : Bitrate : 14929920
INPUT : Slieces : 1
INPUT : IntraPeriod : 30
INPUT : IDRPeriod : 60
INPUT : IpPeriod : 1
INPUT : Initial QP : 26
INPUT : Min QP : 0
INPUT : Source YUV : AUTO generated
INPUT : Coded Clip : /tmp/test.264
INPUT : Rec Clip : Not save reconstructed framelibva info : VA-API version 0.38.1
libva info : va_getDriverName() returns 0
libva info : Trying to open /run/opengl-driver/lib/dri/i965_drv_video.so
libva info : Found init function __vaDriverInit_0_38
libva info : va_openDriver() returns 0
Use profile VAProfileH264Main
Support rate control mode (0x12):CBR CQP
RateControl mode : CQP
Support VAConfigAttribEncPackedHeaders
Support packed sequence headers
Support packed picture headers
Support packed slice headers
Support packed misc headers
Support 1 RefPicList0 and 1 RefPicList1
Loading data into surface 15.....Complete surface loading
\00000059(054456 bytes coded)PERFORMANCE : Frame Rate : 5.59 fps (60 frames, 10730 ms (178.83 ms per frame))
PERFORMANCE : Compression ratio : 51:1
PERFORMANCE : UploadPicture : 10467 ms (174.45, 97.55% percent)
PERFORMANCE : vaBeginPicture : 0 ms (0.00, 0.00% percent)
PERFORMANCE : vaRenderHeader : 1 ms (0.02, 0.01% percent)
PERFORMANCE : vaEndPicture : 42 ms (0.70, 0.39% percent)
PERFORMANCE : vaSyncSurface : 244 ms (4.07, 2.27% percent)
PERFORMANCE : SavePicture : 7 ms (0.12, 0.07% percent)
PERFORMANCE : Others : -31 ms (71582787.75, 40027653.91% percent)
(Multithread enabled, the timing is only for reference)i’ve seen https://www.reddit.com/r/linux/comments/1qk1yu/is_there_currently_opensource_software_to_encode/ though but i’m not sure what do do with it.
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Encoding of two full hd streams in Linux + GPU with Intel HD4000 / VA API / FFMPEG / OpenGL
27 juin 2017, par qknighti want to encode/stream two full hd streams in realtime from my laptop to a remote location using linux/xorg on the host.
VA API
for this i’ve been playing with the VA API but the performance is pretty bad with 5.59 fps (see paste below).
FFMPEG
using ffmpeg with CPU encoding i get about 200 fps but then all cores of my Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz are busy and the fan turns on.
future plans
i want GPU support in encoding and later integrate this into a program which streams a virtual xorg ’screen’, see https://lastlog.de/wiki/index.php/Raspberry_PI_virtual_screen for more details on my plans.
maybe h264 isn’t even what i want ? so if someone advices towards a different implementation, i’d welcome that.
besides VA API there seems to be QuickSync but i didn’t experiment with that yet as it is not packaged on NixOS just yet.
note : i need a library to have a smooth integration into the code.
h264encode -w 1920 -h 1080 —profile MPSource frame is 1920x1080 and will code clip to 1920x1088 with crop
INPUT:Try to encode H264...
INPUT : Resolution : 1920x1080, 60 frames
INPUT : FrameRate : 30
INPUT : Bitrate : 14929920
INPUT : Slieces : 1
INPUT : IntraPeriod : 30
INPUT : IDRPeriod : 60
INPUT : IpPeriod : 1
INPUT : Initial QP : 26
INPUT : Min QP : 0
INPUT : Source YUV : AUTO generated
INPUT : Coded Clip : /tmp/test.264
INPUT : Rec Clip : Not save reconstructed framelibva info : VA-API version 0.38.1
libva info : va_getDriverName() returns 0
libva info : Trying to open /run/opengl-driver/lib/dri/i965_drv_video.so
libva info : Found init function __vaDriverInit_0_38
libva info : va_openDriver() returns 0
Use profile VAProfileH264Main
Support rate control mode (0x12):CBR CQP
RateControl mode : CQP
Support VAConfigAttribEncPackedHeaders
Support packed sequence headers
Support packed picture headers
Support packed slice headers
Support packed misc headers
Support 1 RefPicList0 and 1 RefPicList1
Loading data into surface 15.....Complete surface loading
\00000059(054456 bytes coded)PERFORMANCE : Frame Rate : 5.59 fps (60 frames, 10730 ms (178.83 ms per frame))
PERFORMANCE : Compression ratio : 51:1
PERFORMANCE : UploadPicture : 10467 ms (174.45, 97.55% percent)
PERFORMANCE : vaBeginPicture : 0 ms (0.00, 0.00% percent)
PERFORMANCE : vaRenderHeader : 1 ms (0.02, 0.01% percent)
PERFORMANCE : vaEndPicture : 42 ms (0.70, 0.39% percent)
PERFORMANCE : vaSyncSurface : 244 ms (4.07, 2.27% percent)
PERFORMANCE : SavePicture : 7 ms (0.12, 0.07% percent)
PERFORMANCE : Others : -31 ms (71582787.75, 40027653.91% percent)
(Multithread enabled, the timing is only for reference)i’ve seen https://www.reddit.com/r/linux/comments/1qk1yu/is_there_currently_opensource_software_to_encode/ though but i’m not sure what do do with it.
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ffmpeg hardware vaapi encoding VC1 to H.265 [closed]
18 août 2024, par netzwanzeI am trying to transcode a video from VC1 to H.265 using hardware acceleration.
VC1 by software decode and then encode by hardware acceleration.


ffmpeg -i title_t01.mkv -map 0 -c:a copy -c:s copy -c:v hevc_vaapi DUMB_AND_DUMBER.mkv


Unfortunately this does not work


detected 16 logical cores
[graph 0 input from stream 0:0 @ 0x55bc75120200] Setting 'video_size' to value '1920x1080'
[graph 0 input from stream 0:0 @ 0x55bc75120200] Setting 'pix_fmt' to value '0'
[graph 0 input from stream 0:0 @ 0x55bc75120200] Setting 'time_base' to value '1/1000'
[graph 0 input from stream 0:0 @ 0x55bc75120200] Setting 'pixel_aspect' to value '1/1'
[graph 0 input from stream 0:0 @ 0x55bc75120200] Setting 'frame_rate' to value '24000/1001'
[graph 0 input from stream 0:0 @ 0x55bc75120200] w:1920 h:1080 pixfmt:yuv420p tb:1/1000 fr:24000/1001 sar:1/1
[format @ 0x55bc75120a40] Setting 'pix_fmts' to value 'vaapi'
[auto_scale_0 @ 0x55bc750eae80] w:iw h:ih flags:'' interl:0
[format @ 0x55bc75120a40] auto-inserting filter 'auto_scale_0' between the filter 'Parsed_null_0' and the filter 'format'
Impossible to convert between the formats supported by the filter 'Parsed_null_0' and the filter 'auto_scale_0'
[vf#0:0 @ 0x55bc751182c0] Error reinitializing filters!
Failed to inject frame into filter network: Function not implemented
[vist#0:0/vc1 @ 0x55bc751134c0] Decoder thread received EOF packet
[vist#0:0/vc1 @ 0x55bc751134c0] Decoder returned EOF, finishing
[vist#0:0/vc1 @ 0x55bc751134c0] Terminating decoder thread
Error while filtering: Function not implemented


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