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The pirate bay depuis la Belgique
1er avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (56)
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (7918)
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FFMPEG dumping a RTSP streaming works on Windows but not in Ubuntu
9 août 2016, par cuentafalsa7I have a camera with a
RTSPserver. When I try to save the streaming, usingFFMPEGin Windows works ; in Ubuntu,FFMPEGit doesn’t.The command, in Windows is :
ffmpeg.exe -i "rtsp://192.168.1.10:1236/?videoapi=mc&h264=1000-20-1280-960" -r 20 test.mp4In Linux :
ffmpeg -i "rtsp://192.168.1.10:1236/?videoapi=mc&h264=1000-20-1280-960" -r 20 test.mp4The output in Linux is :
$ ffmpeg -i "rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960" -r 20 test.mp4
ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
[rtsp @ 0x1f18340] UDP timeout, retrying with TCP
[rtsp @ 0x1f18340] Nonmatching transport in server reply
[rtsp @ 0x1f18340] Could not find codec parameters for stream 0 (Video: h264, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960: could not find codec parameters
Input #0, rtsp, from 'rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960':
Metadata:
title : Unnamed
comment : N/A
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264, none, 90k tbr, 90k tbn, 180k tbc
Output #0, mp4, to 'test.mp4':
Output file #0 does not contain any streamThe ffmpeg.exe output is :
>ffmpeg.exe
ffmpeg version N-81300-gce2217b Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib
ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree
type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
openjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 51.100 / 57. 51.100
libavformat 57. 46.100 / 57. 46.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 50.100 / 6. 50.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'The ffmpeg output in Ubuntu is :
$ ffmpeg
ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'I’m using Windows 7 64 bits and Ubuntu 16.04.
I have tried to increase the suggested values but didn’t work either.
Any idea, except switching to Windows ? -
php-ffmpeg too slow - generating thumbnails ?
25 avril 2013, par Wiggler Jtagfirst time I am trying to create thumbnail preview from video file, uploaded 700mb .avi film with 209747 frames. Now I am trying to create 1 thumbnail, but it takes 4.7 seconds, because I've set frame 10000, if I set it just to 1000, it takes only 0.4 seconds to generate thumbnail.
How could I generate like 5-10 thumbnails from different frames on-the-go in less than a second ? Is it even possible ? Is it different to use exec(ffmpeg) or php-ffmpeg ?
Using 0.6-svn ffmpeg, Debian 6.0.7, php 5.4.14 on machine 2x Xeon L5420 and still slow... Any ideas ? How about to use ffmpeg + time of the video instead of frame ?$movie = 'ai.avi';
$thumbnail = 'thumbnail.jpg';
$mov = new ffmpeg_movie($movie);
$frame = 10000;
$frame = $mov->getFrame($frame);
if($frame) {
$gd_image = $frame->toGDImage();
if($gd_image) {
imagejpeg($gd_image, $thumbnail, 100);
imagedestroy($gd_image);
}
}
echo '<img src="http://stackoverflow.com/feeds/tag/'.$thumbnail.'" style='max-width: 300px; max-height: 300px' /><br />'; -
FFMpeg encoded video will only play in FFPlay
8 novembre 2013, par mohMI've been debugging my program for a couple of weeks now with the output video only showing a blank screen (was testing with VLC, WMP and WMPClassic). I happened to try using FFPlay and lo and behold the video works perfectly. I've read that this is usually caused by an incorrect pixel format, and that switching to PIX_FMT_YUV420P will make it work universally...but I'm already using that pixel format in the encoding process. Is there anything else that is causing this ?
AVCodec* codec;
AVCodecContext* c = NULL;
uint8_t* outbuf;
int i, out_size, outbuf_size;
avcodec_register_all();
printf("Video encoding\n");
// Find the mpeg1 video encoder
codec = avcodec_find_encoder(CODEC_ID_H264);
if (!codec) {
fprintf(stderr, "Codec not found\n");
exit(1);
}
else printf("H264 codec found\n");
c = avcodec_alloc_context3(codec);
c->bit_rate = 400000;
c->width = 1920; // resolution must be a multiple of two (1280x720),(1900x1080),(720x480)
c->height = 1200;
c->time_base.num = 1; // framerate numerator
c->time_base.den = 25; // framerate denominator
c->gop_size = 10; // emit one intra frame every ten frames
c->max_b_frames = 1; // maximum number of b-frames between non b-frames
//c->keyint_min = 1; // minimum GOP size
//c->i_quant_factor = (float)0.71; // qscale factor between P and I frames
//c->b_frame_strategy = 20;
//c->qcompress = (float)0.6;
//c->qmin = 20; // minimum quantizer
//c->qmax = 51; // maximum quantizer
//c->max_qdiff = 4; // maximum quantizer difference between frames
//c->refs = 4; // number of reference frames
//c->trellis = 1; // trellis RD Quantization
c->pix_fmt = PIX_FMT_YUV420P;
c->codec_id = CODEC_ID_H264;
//c->codec_type = AVMEDIA_TYPE_VIDEO;
// Open the encoder
if (avcodec_open2(c, codec,NULL) < 0) {
fprintf(stderr, "Could not open codec\n");
exit(1);
}
else printf("H264 codec opened\n");
outbuf_size = 100000 + c->width*c->height*(32>>3);//*(32>>3); // alloc image and output buffer
outbuf = static_cast(malloc(outbuf_size));
printf("Setting buffer size to: %d\n",outbuf_size);
FILE* f = fopen("example.mpg","wb");
if(!f) printf("x - Cannot open video file for writing\n");
else printf("Opened video file for writing\n");
// encode 5 seconds of video
for(i=0;iwidth, c->height);
uint8_t* outbuffer = (uint8_t*)av_malloc(nbytes*sizeof(uint8_t));
AVFrame* inpic = avcodec_alloc_frame();
AVFrame* outpic = avcodec_alloc_frame();
outpic->pts = (int64_t)((float)i * (1000.0/((float)(c->time_base.den))) * 90);
avpicture_fill((AVPicture*)inpic, (uint8_t*)pPixels, PIX_FMT_RGB32, c->width, c->height); // Fill picture with image
avpicture_fill((AVPicture*)outpic, outbuffer, PIX_FMT_YUV420P, c->width, c->height);
av_image_alloc(outpic->data, outpic->linesize, c->width, c->height, c->pix_fmt, 1);
inpic->data[0] += inpic->linesize[0]*(screenHeight-1); // Flipping frame
inpic->linesize[0] = -inpic->linesize[0]; // Flipping frame
struct SwsContext* fooContext = sws_getContext(screenWidth, screenHeight, PIX_FMT_RGB32, c->width, c->height, PIX_FMT_YUV420P, SWS_FAST_BILINEAR, NULL, NULL, NULL);
sws_scale(fooContext, inpic->data, inpic->linesize, 0, c->height, outpic->data, outpic->linesize);
// encode the image
out_size = avcodec_encode_video(c, outbuf, outbuf_size, outpic);
printf("Encoding frame %3d (size=%5d)\n", i, out_size);
fwrite(outbuf, 1, out_size, f);
delete [] pPixels;
av_free(outbuffer);
av_free(inpic);
av_free(outpic);
}
// get the delayed frames
for(; out_size; i++) {
fflush(stdout);
out_size = avcodec_encode_video(c, outbuf, outbuf_size, NULL);
printf("Writing frame %3d (size=%5d)\n", i, out_size);
fwrite(outbuf, 1, out_size, f);
}
// add sequence end code to have a real mpeg file
outbuf[0] = 0x00;
outbuf[1] = 0x00;
outbuf[2] = 0x01;
outbuf[3] = 0xb7;
fwrite(outbuf, 1, 4, f);
fclose(f);
avcodec_close(c);
free(outbuf);
av_free(c);
printf("Closed codec and Freed\n");
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