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Médias (5)
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ED-ME-5 1-DVD
11 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Audio
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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
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Valkaama DVD Cover Outside
4 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Image
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Valkaama DVD Label
4 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Image
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Valkaama DVD Cover Inside
4 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Image
Autres articles (80)
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Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...) -
Other interesting software
13 avril 2011, parWe don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
We don’t know them, we didn’t try them, but you can take a peek.
Videopress
Website : http://videopress.com/
License : GNU/GPL v2
Source code : (...) -
MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)
Sur d’autres sites (5357)
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ffmpeg how to add mkv to formats
30 décembre 2015, par Mahmoud Saadhello after installing ffmpeg in my linux server with centos 6 after searching google i run ffmpeg -formats so i need to add mkv i know i will need to recompile ffmpeg but i do not know how to do it
thank youFile formats:
D. = Demuxing supported
.E = Muxing supported
--
E 3g2 3GP2 format
E 3gp 3GP format
D 4xm 4X Technologies format
D IFF IFF format
D ISS Funcom ISS format
D MTV MTV format
DE RoQ raw id RoQ format
D aac raw ADTS AAC
DE ac3 raw AC-3
E adts ADTS AAC
D aea MD STUDIO audio
DE aiff Audio IFF
DE alaw PCM A-law format
DE alsa ALSA audio output
DE amr 3GPP AMR file format
D anm Deluxe Paint Animation
D apc CRYO APC format
D ape Monkey's Audio
DE asf ASF format
E asf_stream ASF format
DE ass SSA/ASS format
DE au SUN AU format
DE avi AVI format
E avm2 Flash 9 (AVM2) format
D avs AVS format
D bethsoftvid Bethesda Softworks VID format
D bfi Brute Force & Ignorance
D bink Bink
D c93 Interplay C93
D caf Apple Core Audio Format
D cavsvideo raw Chinese AVS video
D cdg CD Graphics Format
E crc CRC testing format
DE daud D-Cinema audio format
DE dirac raw Dirac
DE dnxhd raw DNxHD (SMPTE VC-3)
D dsicin Delphine Software International CIN format
DE dts raw DTS
DE dv DV video format
D dv1394 DV1394 A/V grab
E dvd MPEG-2 PS format (DVD VOB)
D dxa DXA
D ea Electronic Arts Multimedia Format
D ea_cdata Electronic Arts cdata
DE eac3 raw E-AC-3
DE f32be PCM 32 bit floating-point big-endian format
DE f32le PCM 32 bit floating-point little-endian format
DE f64be PCM 64 bit floating-point big-endian format
DE f64le PCM 64 bit floating-point little-endian format
DE ffm FFM (FFserver live feed) format
D film_cpk Sega FILM/CPK format
DE filmstrip Adobe Filmstrip
DE flac raw FLAC
D flic FLI/FLC/FLX animation format
DE flv FLV format
E framecrc framecrc testing format
E gif GIF Animation
D gsm raw GSM
DE gxf GXF format
DE h261 raw H.261
DE h263 raw H.263
DE h264 raw H.264 video format
D idcin id Cinematic format
DE image2 image2 sequence
DE image2pipe piped image2 sequence
D ingenient raw Ingenient MJPEG
D ipmovie Interplay MVE format
E ipod iPod H.264 MP4 format
D iv8 A format generated by IndigoVision 8000 video server
D libdc1394 dc1394 v.2 A/V grab
D lmlm4 lmlm4 raw format
DE m4v raw MPEG-4 video format
DE matroska Matroska file format
DE mjpeg raw MJPEG video
DE mlp raw MLP
D mm American Laser Games MM format
DE mmf Yamaha SMAF
E mov MOV format
D mov,mp4,m4a,3gp,3g2,mj2 QuickTime/MPEG-4/Motion JPEG 2000 format
E mp2 MPEG audio layer 2
DE mp3 MPEG audio layer 3
E mp4 MP4 format
D mpc Musepack
D mpc8 Musepack SV8
DE mpeg MPEG-1 System format
E mpeg1video raw MPEG-1 video
E mpeg2video raw MPEG-2 video
DE mpegts MPEG-2 transport stream format
D mpegtsraw MPEG-2 raw transport stream format
D mpegvideo raw MPEG video
E mpjpeg MIME multipart JPEG format
D msnwctcp MSN TCP Webcam stream
DE mulaw PCM mu-law format
D mvi Motion Pixels MVI format
DE mxf Material eXchange Format
E mxf_d10 Material eXchange Format, D-10 Mapping
D nc NC camera feed format
D nsv Nullsoft Streaming Video
E null raw null video format
DE nut NUT format
D nuv NuppelVideo format
DE ogg Ogg
D oma Sony OpenMG audio
DE oss Open Sound System playback
E psp PSP MP4 format
D psxstr Sony Playstation STR format
D pva TechnoTrend PVA file and stream format
D qcp QCP format
D r3d REDCODE R3D format
DE rawvideo raw video format
E rcv VC-1 test bitstream
D rl2 RL2 format
DE rm RealMedia format
D rpl RPL/ARMovie format
E rtp RTP output format
DE rtsp RTSP output format
DE s16be PCM signed 16 bit big-endian format
DE s16le PCM signed 16 bit little-endian format
DE s24be PCM signed 24 bit big-endian format
DE s24le PCM signed 24 bit little-endian format
DE s32be PCM signed 32 bit big-endian format
DE s32le PCM signed 32 bit little-endian format
DE s8 PCM signed 8 bit format
D sdp SDP
D shn raw Shorten
D siff Beam Software SIFF
D smk Smacker video
D sol Sierra SOL format
DE sox SoX native format
E spdif IEC958 - S/PDIF (IEC-61937)
E svcd MPEG-2 PS format (VOB)
DE swf Flash format
D thp THP
D tiertexseq Tiertex Limited SEQ format
D tmv 8088flex TMV
DE truehd raw TrueHD
D tta True Audio
D txd Renderware TeXture Dictionary
DE u16be PCM unsigned 16 bit big-endian format
DE u16le PCM unsigned 16 bit little-endian format
DE u24be PCM unsigned 24 bit big-endian format
DE u24le PCM unsigned 24 bit little-endian format
DE u32be PCM unsigned 32 bit big-endian format
DE u32le PCM unsigned 32 bit little-endian format
DE u8 PCM unsigned 8 bit format
D vc1 raw VC-1
D vc1test VC-1 test bitstream format
E vcd MPEG-1 System format (VCD)
D video4linux Video4Linux device grab
D video4linux2 Video4Linux2 device grab
D vmd Sierra VMD format
E vob MPEG-2 PS format (VOB)
DE voc Creative Voice file format
D vqf Nippon Telegraph and Telephone Corporation (NTT) TwinVQ
D w64 Sony Wave64 format
DE wav WAV format
D wc3movie Wing Commander III movie format
E webm WebM file format
D wsaud Westwood Studios audio format
D wsvqa Westwood Studios VQA format
D wv WavPack
D x11grab X11grab
D xa Maxis XA File Format
D yop Psygnosis YOP Format
DE yuv4mpegpipe YUV4MPEG pipe format -
Zlib vs. XZ on 2SF
I recently released my Game Music Appreciation website. It allows users to play an enormous range of video game music directly in their browsers. To do this, the site has to host the music. And since I’m a compression bore, I have to know how small I can practically make these music files. I already published the results of my effort to see if XZ could beat RAR (RAR won, but only slightly, and I still went with XZ for the project) on the corpus of Super Nintendo chiptune sets. Next is the corpus of Nintendo DS chiptunes.
Repacking Nintendo DS 2SF
The prevailing chiptune format for storing Nintendo DS songs is the .2sf format. This is a subtype of the Portable Sound Format (PSF). The designers had the foresight to build compression directly into the format. Much of payload data in a PSF file is compressed with zlib. Since I already incorporated Embedded XZ into the player project, I decided to try repacking the PSF payload data from zlib -> xz.In an effort to not corrupt standards too much, I changed the ’PSF’ file signature (seen in the first 3 bytes of a file) to ’psf’.
Results
There are about 900 Nintendo DS games currently represented in my website’s archive. Total size of the original PSF archive, payloads packed with zlib : 2.992 GB. Total size of the same archive with payloads packed as xz : 2.059 GB.Using xz vs. zlib saved me nearly a gigabyte of storage. That extra storage doesn’t really impact my hosting plan very much (I have 1/2 TB, which is why I’m so nonchalant about hosting the massive MPlayer Samples Archive). However, smaller individual files translates to a better user experience since the files are faster to download.
Here is a pretty picture to illustrate the space savings :
The blue occasionally appears to dip below the orange but the data indicates that xz is always more efficient than zlib. Here’s the raw data (comes in vanilla CSV flavor too).
Interface Impact
So the good news for the end user is that the songs are faster to load up front. The downside is that there can be a noticeable delay when changing tracks. Even though all songs are packaged into one file for download, and the entire file is downloaded before playback begins, each song is individually compressed. Thus, changing tracks triggers another decompression operation. I’m toying the possibility of some sort of background process that decompresses song (n+1) while playing song (n) in order to help compensate for this.I don’t like the idea of decompressing everything up front because A) it would take even longer to start playing ; and B) it would take a huge amount of memory.
Corner Case
There was at least one case in which I found zlib to be better than xz. It looks like zlib’s minimum block size is smaller than xz’s. I think I discovered xz to be unable to compress a few bytes to a block any smaller than about 60-64 bytes while zlib got it down into the teens. However, in those cases, it was more efficient to just leave the data uncompressed anyway. -
gcc : Undefined Reference Error
26 octobre 2024, par jamie_yI would like to use a function 'ff_load_image' defined in ffmpeg/libavfilter/lavfutils.h.



program.c



#include "../ffmpeg/libavfilter/lavfutils.h"

int main ()
{
 uint8_t* data;

 int linesize, width, height, log_ctx;

 int i = ff_load_image(&data, &linesize, &width, &height, AV_PIX_FMT_RGB24, "blue.jpg", &log_ctx);
}



Running



gcc -I$HOME/ffmpeg/include program.c -L$HOME/ffmpeg/lib -lavfilter -lavcodec -lavutil



gives undefined reference errors.



program.c: In function \u2018main\u2019:
program.c:9: warning: passing argument 1 of \u2018ff_load_image\u2019 from incompatible pointer type
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018uint8_t **\u2019 but argument is of type \u2018uint8_t *\u2019
program.c:9: warning: passing argument 2 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018int *\u2019 but argument is of type \u2018int\u2019
program.c:9: warning: passing argument 3 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018int *\u2019 but argument is of type \u2018int\u2019
program.c:9: warning: passing argument 4 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018int *\u2019 but argument is of type \u2018int\u2019
program.c:9: warning: passing argument 5 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018enum AVPixelFormat *\u2019 but argument is of type \u2018int\u2019
program.c:9: warning: passing argument 7 of \u2018ff_load_image\u2019 makes pointer from integer without a cast
../ffmpeg/libavfilter/lavfutils.h:39: note: expected \u2018void *\u2019 but argument is of type \u2018int\u2019
/home/jamiey/ffmpeg/lib/libavfilter.a(lavfutils.o): In function `ff_load_image':
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:38: undefined reference to `av_register_all'
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:40: undefined reference to `av_find_input_format'
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:41: undefined reference to `avformat_open_input'
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:66: undefined reference to `av_read_frame'
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:92: undefined reference to `avformat_close_input'
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:92: undefined reference to `avformat_close_input'
/home/jamiey/ffmpeg/libavfilter/lavfutils.c:92: undefined reference to `avformat_close_input'
/home/jamiey/ffmpeg/lib/libavcodec.a(frame_thread_encoder.o): In function `ff_frame_thread_encoder_free':
/home/jamiey/ffmpeg/libavcodec/frame_thread_encoder.c:225: undefined reference to `pthread_join'
/home/jamiey/ffmpeg/lib/libavcodec.a(frame_thread_encoder.o): In function `ff_frame_thread_encoder_init':
/home/jamiey/ffmpeg/libavcodec/frame_thread_encoder.c:200: undefined reference to `pthread_create'
/home/jamiey/ffmpeg/lib/libavcodec.a(pthread_frame.o): In function `ff_frame_thread_free':
/home/jamiey/ffmpeg/libavcodec/pthread_frame.c:575: undefined reference to `pthread_join'
/home/jamiey/ffmpeg/lib/libavcodec.a(pthread_frame.o): In function `ff_frame_thread_init':
/home/jamiey/ffmpeg/libavcodec/pthread_frame.c:705: undefined reference to `pthread_create'
/home/jamiey/ffmpeg/lib/libavcodec.a(pthread_slice.o): In function `ff_slice_thread_init':
/home/jamiey/ffmpeg/libavcodec/pthread_slice.c:220: undefined reference to `pthread_create'
/home/jamiey/ffmpeg/lib/libavcodec.a(pthread_slice.o): In function `ff_slice_thread_free':
/home/jamiey/ffmpeg/libavcodec/pthread_slice.c:118: undefined reference to `pthread_join'
/home/jamiey/ffmpeg/lib/libavutil.a(rational.o): In function `av_d2q':
/home/jamiey/ffmpeg/libavutil/rational.c:115: undefined reference to `log'
/home/jamiey/ffmpeg/libavutil/rational.c:118: undefined reference to `floor'
/home/jamiey/ffmpeg/lib/libavutil.a(eval.o): In function `eval_expr':
/home/jamiey/ffmpeg/libavutil/eval.c:183: undefined reference to `trunc'
/home/jamiey/ffmpeg/libavutil/eval.c:182: undefined reference to `ceil'
/home/jamiey/ffmpeg/libavutil/eval.c:181: undefined reference to `floor'
/home/jamiey/ffmpeg/libavutil/eval.c:241: undefined reference to `pow'
/home/jamiey/ffmpeg/libavutil/eval.c:177: undefined reference to `exp'
/home/jamiey/ffmpeg/libavutil/eval.c:176: undefined reference to `exp'
/home/jamiey/ffmpeg/libavutil/eval.c:287: undefined reference to `pow'
/home/jamiey/ffmpeg/libavutil/eval.c:278: undefined reference to `floor'
/home/jamiey/ffmpeg/lib/libavutil.a(eval.o): In function `av_strtod':
/home/jamiey/ffmpeg/libavutil/eval.c:112: undefined reference to `pow'
/home/jamiey/ffmpeg/libavutil/eval.c:103: undefined reference to `pow'
/home/jamiey/ffmpeg/libavutil/eval.c:109: undefined reference to `pow'
/home/jamiey/ffmpeg/lib/libavutil.a(eval.o): In function `parse_primary':
/home/jamiey/ffmpeg/libavutil/eval.c:394: undefined reference to `sinh'
/home/jamiey/ffmpeg/libavutil/eval.c:395: undefined reference to `cosh'
/home/jamiey/ffmpeg/libavutil/eval.c:396: undefined reference to `tanh'
/home/jamiey/ffmpeg/libavutil/eval.c:397: undefined reference to `sin'
/home/jamiey/ffmpeg/libavutil/eval.c:398: undefined reference to `cos'
/home/jamiey/ffmpeg/libavutil/eval.c:399: undefined reference to `tan'
/home/jamiey/ffmpeg/libavutil/eval.c:400: undefined reference to `atan'
/home/jamiey/ffmpeg/libavutil/eval.c:401: undefined reference to `asin'
/home/jamiey/ffmpeg/libavutil/eval.c:402: undefined reference to `acos'
/home/jamiey/ffmpeg/libavutil/eval.c:403: undefined reference to `exp'
/home/jamiey/ffmpeg/libavutil/eval.c:404: undefined reference to `log'
/home/jamiey/ffmpeg/libavutil/eval.c:405: undefined reference to `fabs'
collect2: ld returned 1 exit status



However, I was successful in running functions in other library, such as the ones in "ffmpeg/libavcodec/avcodec.h". Why is this happening to "ffmpeg/libavfilter/lavfutils.h" ?


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