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Autres articles (41)
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Dépôt de média et thèmes par FTP
31 mai 2013, parL’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...) -
Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...) -
Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)
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FFMPEG - Drawtext or drawbox or overlay on single frame
2 novembre 2011, par waxicalI'm using the avfilters on FFMPEG to drawtext and drawbox. Two of the most poorly documented functions known to man.
I'm struggling to work out how and if I can use this on a single frame. I.e. appear drawtext on frame 22.
Current command :-
ffmpeg -i /home/vtest/test.wmv -y -b 800000 -f flv -vcodec libx264 -vpre default -s 768x432 -g 250 -vf drawtext="fontfile=/home/Cyberbit.ttf:fontsize=24:text=testical:fontcolor=green:x=100:y=200" -qscale 8 -acodec libfaac -sn -vstats /home/testout.flvTwo elements mention here in the documentation are n and t - however I only seem to be able to use them in x and y. Not in text or even as other parameters.
Any help or ffmpeg guidance would be gratefully received.
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Ffmpeg library compilation .(without pkg-config) in linux ubuntu
2 novembre 2023, par Mohideen IrfanI have been trying to use ffmpeg libraries in my C code. But when i compile those libraries using pkg-config tool in linux terminal it works. But when i directly linked all the necessary libraries , it won't work. I even specified the library path in -L flag and LD_LIBRARY_PATH. even included the -I flag correctly. But when i use pkg-config it works, if i use directly it wont work. I also export LD_LIBRARY_PATH.


here is my C program Sample.c :


#include 
#include <libavformat></libavformat>avformat.h>


int main(int argc, char *argv[]) {
 if (argc < 2) {
 printf("Please provide a video file as an argument.\n");
 return -1;
 }

// av_register_all();

 AVFormatContext *pFormatCtx = NULL;
 if (avformat_open_input(&pFormatCtx, argv[1], NULL, NULL) != 0) {
 printf("Could not open the file.\n");
 return -1;
 }

 if (avformat_find_stream_info(pFormatCtx, NULL) < 0) {
 printf("Could not find stream information.\n");
 return -1;
 }

 av_dump_format(pFormatCtx, 0, argv[1], 0);

 avformat_close_input(&pFormatCtx);

 return 0;
}


here is the package file of libavformat.pc :


prefix=/home/mohideen-ts205/ffmpeg_build
exec_prefix=${prefix}
libdir=/home/mohideen-ts205/ffmpeg_build/lib
includedir=/home/mohideen-ts205/ffmpeg_build/include

Name: libavformat
Description: FFmpeg container format library
Version: 60.17.100
Requires: libavcodec >= 60.32.102, libswresample >= 4.13.100, libavutil >= 58.30.100
Requires.private: 
Conflicts:
Libs: -L${libdir} -lavformat -lm -latomic -lz -lgnutls -pthread -lgmp -lunistring -lidn2 -latomic -lhogweed -lgmp -lnettle -ltasn1 -lp11-kit
Libs.private: 
Cflags: -I${includedir}


libavutil.pc :


prefix=/home/mohideen-ts205/ffmpeg_build
exec_prefix=${prefix}
libdir=/home/mohideen-ts205/ffmpeg_build/lib
includedir=/home/mohideen-ts205/ffmpeg_build/include

Name: libavutil
Description: FFmpeg utility library
Version: 58.30.100
Requires: 
Requires.private: 
Conflicts:
Libs: -L${libdir} -lavutil -pthread -lva-drm -lva -lva-x11 -lva -lvdpau -lX11 -lm -lva -latomic -lX11 -lpthread -lxcb -lXau -lXdmcp
Libs.private: 
Cflags: -I${includedir}


And here the command :
with pkg config- working one :


gcc -o sample sample.c $(pkg-config --libs libavutil libavformat libavcodec)


without it directly linking :


gcc -o my_program -I/home/mohideen-ts205/ffmpeg_build/include -L/home/mohideen-ts205/ffmpeg_build/lib -lavformat


NOTE : I even tried to copy all the library files mentioned in libavutil.pc and libavformat.pc, but still i am getting this undefined reference error. what kind of problem it is.


/usr/bin/ld: /tmp/ccoCfZjA.o: in function `main':
sample.c:(.text+0x63): undefined reference to `avformat_open_input'
/usr/bin/ld: sample.c:(.text+0x8b): undefined reference to `avformat_find_stream_info'
/usr/bin/ld: sample.c:(.text+0xc3): undefined reference to `av_dump_format'
/usr/bin/ld: sample.c:(.text+0xcf): undefined reference to `avformat_close_input'
collect2: error: ld returned 1 exit status


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Linking libavcodec and libavformat : Undefined references
8 décembre 2014, par AbhijitI am trying to compile a project I am working on that uses ffmpeg libraries. The project is written in C. The header files are appropriately included in the source code. In particular, it seems to be using
libavcodecandlibavformat, and these libraries are appropriately linked in the Makefile with the LDFLAGS. Here are the flags used :-lavcodec -lavformat -lswscale -lavutilNow, because the packaged libraries that come with Ubuntu were too out-of-date, I downloaded the latest source code for ffmpeg, compiled it and installed it. I removed all of the packaged libraries that were installed via the package manager. Now, despite adding the flags above, I get a lot of undefined references and I cannot seem to fix it. Here is the output with regard to the undefined references :
//usr/local/lib/libavcodec.a(cscd.o): In function `decode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/cscd.c:91: undefined reference to `uncompress'
//usr/local/lib/libavcodec.a(dxa.o): In function `decode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/dxa.c:250: undefined reference to `uncompress'
//usr/local/lib/libavcodec.a(exr.o): In function `pxr24_uncompress':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/exr.c:784: undefined reference to `uncompress'
//usr/local/lib/libavcodec.a(exr.o): In function `zip_uncompress':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/exr.c:259: undefined reference to `uncompress'
//usr/local/lib/libavcodec.a(flashsv.o): In function `flashsv_decode_block':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:191: undefined reference to `inflateReset'
//usr/local/lib/libavcodec.a(flashsv.o): In function `flashsv2_prime':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:158: undefined reference to `inflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:160: undefined reference to `deflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:166: undefined reference to `deflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:167: undefined reference to `deflateEnd'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:169: undefined reference to `inflateReset'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:178: undefined reference to `inflate'
//usr/local/lib/libavcodec.a(flashsv.o): In function `flashsv_decode_block':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:207: undefined reference to `inflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:210: undefined reference to `inflateSync'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:211: undefined reference to `inflate'
//usr/local/lib/libavcodec.a(flashsv.o): In function `calc_deflate_block_size':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:259: undefined reference to `deflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:261: undefined reference to `deflateBound'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:262: undefined reference to `deflateEnd'
//usr/local/lib/libavcodec.a(flashsv.o): In function `flashsv_decode_end':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:107: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(flashsv.o): In function `flashsv_decode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv.c:126: undefined reference to `inflateInit_'
//usr/local/lib/libavcodec.a(flashsv2enc.o): In function `encode_zlib':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv2enc.c:354: undefined reference to `compress2'
//usr/local/lib/libavcodec.a(flashsv2enc.o): In function `encode_zlibprime':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv2enc.c:366: undefined reference to `deflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv2enc.c:375: undefined reference to `deflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv2enc.c:384: undefined reference to `deflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsv2enc.c:385: undefined reference to `deflateEnd'
//usr/local/lib/libavcodec.a(flashsvenc.o): In function `encode_bitstream':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsvenc.c:190: undefined reference to `compress2'
//usr/local/lib/libavcodec.a(flashsvenc.o): In function `flashsv_encode_end':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/flashsvenc.c:95: undefined reference to `deflateEnd'
//usr/local/lib/libavcodec.a(g2meet.o): In function `kempf_decode_tile':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/g2meet.c:408: undefined reference to `uncompress'
//usr/local/lib/libavcodec.a(lcldec.o): In function `zlib_decomp':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lcldec.c:137: undefined reference to `inflateReset'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lcldec.c:146: undefined reference to `inflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lcldec.c:137: undefined reference to `inflateReset'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lcldec.c:146: undefined reference to `inflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lcldec.c:137: undefined reference to `inflateReset'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lcldec.c:146: undefined reference to `inflate'
//usr/local/lib/libavcodec.a(lcldec.o): In function `decode_end':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lcldec.c:647: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(lcldec.o): In function `decode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lcldec.c:623: undefined reference to `inflateInit_'
//usr/local/lib/libavcodec.a(lclenc.o): In function `encode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lclenc.c:80: undefined reference to `deflateBound'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lclenc.c:90: undefined reference to `deflateReset'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lclenc.c:101: undefined reference to `deflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lclenc.c:107: undefined reference to `deflate'
//usr/local/lib/libavcodec.a(lclenc.o): In function `encode_end':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lclenc.c:184: undefined reference to `deflateEnd'
//usr/local/lib/libavcodec.a(lclenc.o): In function `encode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/lclenc.c:165: undefined reference to `deflateInit_'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:376: undefined reference to `swr_is_initialized'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:222: undefined reference to `swr_is_initialized'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_init_resample':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:163: undefined reference to `swr_init'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:169: undefined reference to `swr_convert'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:236: undefined reference to `swr_convert'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_flush_resample':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:117: undefined reference to `swr_convert'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:408: undefined reference to `swr_close'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_flush':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:563: undefined reference to `swr_close'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_close':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:585: undefined reference to `swr_free'
//usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/opusdec.c:638: undefined reference to `swr_alloc'
//usr/local/lib/libavcodec.a(pngdec.o): In function `decode_zbuf':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:425: undefined reference to `inflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:439: undefined reference to `inflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:448: undefined reference to `inflateEnd'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:453: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(pngdec.o): In function `png_decode_idat':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:393: undefined reference to `inflate'
//usr/local/lib/libavcodec.a(pngdec.o): In function `decode_frame_apng':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:1179: undefined reference to `inflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:1203: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(pngdec.o): In function `decode_frame_png':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:1126: undefined reference to `inflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngdec.c:1142: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(pngenc.o): In function `png_write_chunk':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:200: undefined reference to `crc32'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:202: undefined reference to `crc32'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:205: undefined reference to `crc32'
//usr/local/lib/libavcodec.a(pngenc.o): In function `encode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:298: undefined reference to `deflateInit2_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:303: undefined reference to `deflateBound'
//usr/local/lib/libavcodec.a(pngenc.o): In function `png_write_row':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:220: undefined reference to `deflate'
//usr/local/lib/libavcodec.a(pngenc.o): In function `encode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:447: undefined reference to `deflateEnd'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:422: undefined reference to `deflate'
//usr/local/lib/libavcodec.a(pngenc.o): In function `png_write_row':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:220: undefined reference to `deflate'
//usr/local/lib/libavcodec.a(pngenc.o): In function `png_write_chunk':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:200: undefined reference to `crc32'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/pngenc.c:202: undefined reference to `crc32'
//usr/local/lib/libavcodec.a(svq3.o): In function `svq3_decode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/svq3.c:1016: undefined reference to `uncompress'
//usr/local/lib/libavcodec.a(tiff.o): In function `tiff_uncompress':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/tiff.c:329: undefined reference to `inflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/tiff.c:334: undefined reference to `inflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/tiff.c:335: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(tiffenc.o): In function `encode_strip':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/tiffenc.c:175: undefined reference to `compress'
//usr/local/lib/libavcodec.a(tscc.o): In function `decode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/tscc.c:77: undefined reference to `inflateReset'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/tscc.c:86: undefined reference to `inflate'
//usr/local/lib/libavcodec.a(tscc.o): In function `decode_end':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/tscc.c:173: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(tscc.o): In function `decode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/tscc.c:155: undefined reference to `inflateInit_'
//usr/local/lib/libavcodec.a(zerocodec.o): In function `zerocodec_decode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zerocodec.c:56: undefined reference to `inflateReset'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zerocodec.c:79: undefined reference to `inflate'
//usr/local/lib/libavcodec.a(zerocodec.o): In function `zerocodec_decode_close':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zerocodec.c:109: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(zerocodec.o): In function `zerocodec_decode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zerocodec.c:127: undefined reference to `inflateInit_'
//usr/local/lib/libavcodec.a(zmbv.o): In function `decode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zmbv.c:486: undefined reference to `inflateReset'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zmbv.c:523: undefined reference to `inflate'
//usr/local/lib/libavcodec.a(zmbv.o): In function `decode_end':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zmbv.c:616: undefined reference to `inflateEnd'
//usr/local/lib/libavcodec.a(zmbv.o): In function `decode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zmbv.c:601: undefined reference to `inflateInit_'
//usr/local/lib/libavcodec.a(zmbvenc.o): In function `encode_frame':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zmbvenc.c:224: undefined reference to `deflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zmbvenc.c:215: undefined reference to `deflateReset'
//usr/local/lib/libavcodec.a(zmbvenc.o): In function `encode_end':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zmbvenc.c:259: undefined reference to `deflateEnd'
//usr/local/lib/libavcodec.a(zmbvenc.o): In function `encode_init':
/home/abhijitv/Downloads/ffmpeg-2.5/libavcodec/zmbvenc.c:321: undefined reference to `deflateInit_'
//usr/local/lib/libavformat.a(rtmpproto.o): In function `rtmp_uncompress_swfplayer':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/rtmpproto.c:1097: undefined reference to `inflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/rtmpproto.c:1107: undefined reference to `inflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/rtmpproto.c:1125: undefined reference to `inflateEnd'
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/rtmpproto.c:1125: undefined reference to `inflateEnd'
//usr/local/lib/libavformat.a(swfdec.o): In function `swf_read_packet':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/swfdec.c:335: undefined reference to `uncompress'
//usr/local/lib/libavformat.a(swfdec.o): In function `swf_read_header':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/swfdec.c:124: undefined reference to `inflateInit_'
//usr/local/lib/libavformat.a(swfdec.o): In function `zlib_refill':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/swfdec.c:92: undefined reference to `inflate'
//usr/local/lib/libavformat.a(swfdec.o): In function `swf_read_close':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/swfdec.c:502: undefined reference to `inflateEnd'
//usr/local/lib/libavformat.a(http.o): In function `http_close':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/http.c:1093: undefined reference to `inflateEnd'
//usr/local/lib/libavformat.a(http.o): In function `parse_content_encoding':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/http.c:419: undefined reference to `inflateEnd'
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/http.c:420: undefined reference to `inflateInit2_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/http.c:425: undefined reference to `zlibCompileFlags'
//usr/local/lib/libavformat.a(http.o): In function `http_buf_read_compressed':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/http.c:902: undefined reference to `inflate'
//usr/local/lib/libavformat.a(id3v2.o): In function `id3v2_parse':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/id3v2.c:900: undefined reference to `uncompress'
//usr/local/lib/libavformat.a(matroskadec.o): In function `matroska_decode_buffer':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/matroskadec.c:1212: undefined reference to `inflateInit_'
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/matroskadec.c:1227: undefined reference to `inflate'
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/matroskadec.c:1220: undefined reference to `inflateEnd'
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/matroskadec.c:1232: undefined reference to `inflateEnd'
//usr/local/lib/libavformat.a(mov.o): In function `mov_read_cmov':
/home/abhijitv/Downloads/ffmpeg-2.5/libavformat/mov.c:3146: undefined reference to `uncompress'
collect2: error: ld returned 1 exit statusCan anyone explain what is going wrong over here, and how I can fix this ?
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