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Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...) -
Emballe médias : à quoi cela sert ?
4 février 2011, parCe plugin vise à gérer des sites de mise en ligne de documents de tous types.
Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;
Sur d’autres sites (10120)
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FFMPEG/C++ How to simply write out/passthrough h264 stream ?
11 août 2021, par SchuertaIm trying to learn the basics of ffmpeg writing (reading already works), so im just trying to take in an input .ts file and write out/passthrough the exact same h264 stream to a new output file. I dont get any compilation errors, but for some reason i cant figure out why my output file's framerate is very wrong. Also when i read in my output file, i get printouts saying "Packet corrupt (stream = 0, dts = #)"


I followed the instructions in the ffmpeg library comments so im not sure what im missing. I call initOutStream(), then initH264encoder(), then during the reading/decoding readH264Packet() is called repeatedly. (Removed code for readability sake, left relevant sections below) ;


Edit : If i put my output file through the actuall ffmpeg cmd app, the framerate issue seems to get fixed. Wonder where im messing up


void test::initOutStream() {

//create muxing context
outstreamContext = avformat_alloc_context();

//oformat
AVOutputFormat *guessFormat; //Populate oformat
guessFormat = av_guess_format(NULL, inputVideoUrl.c_str(), NULL);
outstreamContext->oformat = guessFormat; 
outstreamContext->oformat->video_codec = AV_CODEC_ID_H264; 
//outstreamContext->bit_rate = 400000; //No affect; 

//pb
AVIOContext *outAVIOContext = nullptr;
//int result = avio_open(&outAVIOContext, outputVideoUrl.c_str(), AVIO_FLAG_WRITE);
int result = avio_open2(&outAVIOContext, outputVideoUrl.c_str(), AVIO_FLAG_WRITE, NULL, NULL); //Documentain said to use this method
outstreamContext->pb = outAVIOContext;
}


.


void test::initH264encoder() { //Frame -> packet
int result;

h264OutCodec = avcodec_find_encoder(AV_CODEC_ID_H264);

h264OutStream = avformat_new_stream(outstreamContext, h264OutCodec);
h264OutStream->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
h264OutStream->codecpar->codec_id = AV_CODEC_ID_H264;
h264OutStream->codecpar->width = 640;
h264OutStream->codecpar->height = 480;
h264OutStream->id = H264_STREAM_ID;
h264OutStream->codecpar->color_range = AVCOL_RANGE_MPEG;
//h264OutStream->codecpar->bit_rate = 400000;

h264OutContext = avcodec_alloc_context3(h264OutCodec);

h264OutContext->width = 640;
h264OutContext->height = 480;
h264OutContext->time_base = (AVRational){1,static_cast<int>(29.97)};
h264OutContext->pix_fmt = AV_PIX_FMT_YUV420P;

result = avcodec_open2(h264OutContext, h264OutCodec, nullptr);

//Alloc packet + finish
outPacket = av_packet_alloc();

//Write header
result = avformat_write_header(outstreamContext, NULL);
}
</int>

Assume that reading was set up correctly


void test::readH264Packet(__unused uint64_t tick) {
//...av_read_frame(streamContext, inPacket);
//...avcodec_send_packet(h264Context, inPacket);
//...avcodec_receive_frame(h264Context, yuvFrame)
//My passthrough:
if(shouldOutputH264Stream){
 result = avcodec_send_frame(h264OutContext, yuvFrame); //1. Encode frame to packet
 result = avcodec_receive_packet(h264OutContext, outPacket2); //2. get encoded packet
 result = av_interleaved_write_frame(outstreamContext, outPacket2); //3. write packet
 //Write trailer and free happens later
 }
}


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ffmpeg regenerate m3u8 from multi ts file
17 juin 2021, par Mulham AryanI have generated hls videos using FFmpeg with output m3u8.
m3u8 file content


#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:2
#EXT-X-MEDIA-SEQUENCE:1
#EXTINF:2.400000,
ffmpegmovie1.ts
#EXTINF:2.400000,
ffmpegmovie2.ts
#EXTINF:2.400000,
ffmpegmovie3.ts
#EXTINF:2.400000,
ffmpegmovie4.ts
#EXTINF:2.400000,
ffmpegmovie5.ts
#EXTINF:2.400000,
ffmpegmovie6.ts
#EXTINF:2.400000,
ffmpegmovie7.ts
#EXTINF:2.400000,
ffmpegmovie8.ts
#EXTINF:2.400000,
ffmpegmovie9.ts
#EXTINF:2.400000,
ffmpegmovie10.ts


so let suppose that I'm going to take only files from 1 to 5
the m3u8 file should be like this


#EXTM3U
 #EXT-X-VERSION:3
 #EXT-X-TARGETDURATION:2
 #EXT-X-MEDIA-SEQUENCE:1
 #EXTINF:2.400000,
 ffmpegmovie1.ts
 #EXTINF:2.400000,
 ffmpegmovie2.ts
 #EXTINF:2.400000,
 ffmpegmovie3.ts
 #EXTINF:2.400000,
 ffmpegmovie4.ts
 #EXTINF:2.400000,
 ffmpegmovie5.ts


so the question is : is there any command from FFmpeg lets me input multiple ts files and get an output in m3u8 ?
example


ffmpeg -i ffmpegmovie1.ts, ffmpegmovie2.ts, ffmpegmovie3.ts, .... >> output.m3u8


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Timestamp not printed on thumbnails with FFMPEG
26 août 2021, par mlatelcomI have a script using FFMPEG to generate an image with tiled thumbnails every 45 seconds for several videos on a given folder. The images are named with the name of the video it was generated from. It generates the thumbnails for each video but it does not print the time stamps on them. The path to the font file is correct ; so I don't know where the issue is. I'm using the script in Fedora Linux.


Here is the FFMPEG command line code on the script :


ffmpeg -ss 00:00:05 -i test.mp4 -loglevel 40 -frames 1 -bt 20M -vf "drawtext=fontfile=/usr/share/fonts/open-sans/OpenSans-Light.ttf:timecode='00\\:00\\:00\\:00':r=30:fontcolor=white:x=220:y=220:box=1:boxcolor=black@0.5,select=not(mod(n\,1350)),scale=200:150,tile=15x48" -n "${name}.png"


and this is the console output


ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
 built with gcc 11 (GCC)
 configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' --extra-cflags=' -I/usr/include/rav1e' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-libaom --enable-libdav1d --enable-libass --enable-libbluray --enable-libcdio --enable-libdrm --enable-libjack --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librav1e --enable-libsmbclient --enable-version3 --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-version3 --enable-vapoursynth --enable-libvpx --enable-vulkan --enable-libglslang --enable-libx264 --enable-libx265 --enable-libxvid --enable-libxml2 --enable-libzimg --enable-libzvbi --enable-lv2 --enable-avfilter --enable-avresample --enable-libmodplug --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-lto --enable-libmfx --enable-runtime-cpudetect
 libavutil 56. 70.100 / 56. 70.100
 libavcodec 58.134.100 / 58.134.100
 libavformat 58. 76.100 / 58. 76.100
 libavdevice 58. 13.100 / 58. 13.100
 libavfilter 7.110.100 / 7.110.100
 libavresample 4. 0. 0 / 4. 0. 0
 libswscale 5. 9.100 / 5. 9.100
 libswresample 3. 9.100 / 3. 9.100
 libpostproc 55. 9.100 / 55. 9.100
[h264 @ 0x56051b4b3cc0] Reinit context to 1280x720, pix_fmt: yuv420p
[mpegts @ 0x56051b4acc80] max_analyze_duration 5000000 reached at 5000000 microseconds st:0
Input #0, mpegts, from 'test.mp4':
 Duration: 00:04:57.02, start: 1.400000, bitrate: 2853 kb/s
 Program 1 
 Metadata:
 service_name : Service01
 service_provider: FFmpeg
 Stream #0:0[0x100]: Video: h264 (Main), 1 reference frame ([27][0][0][0] / 0x001B), yuv420p(progressive, left), 1280x720 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn, 60 tbc
 Stream #0:1[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 96 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> png (native))
Press [q] to stop, [?] for help
[h264 @ 0x56051ba69e00] Reinit context to 1280x720, pix_fmt: yuv420p
[Parsed_scale_2 @ 0x56051b5953c0] w:200 h:150 flags:'bicubic' interl:0
[graph 0 input from stream 0:0 @ 0x56051b725ac0] w:1280 h:720 pixfmt:yuv420p tb:1/90000 fr:30/1 sar:1/1
[Parsed_scale_2 @ 0x56051b5953c0] w:1280 h:720 fmt:yuv420p sar:1/1 -> w:200 h:150 fmt:rgb24 sar:4/3 flags:0x4
Output #0, image2, to '.png':
 Metadata:
 encoder : Lavf58.76.100
 Stream #0:0: Video: png, 1 reference frame, rgb24(pc, progressive, left), 3000x7200 (0x0) [SAR 4:3 DAR 5:9], q=2-31, 200 kb/s, 0.04 fps, 0.04 tbn
 Metadata:
 encoder : Lavc58.134.100 png
No more output streams to write to, finishing.00.00 bitrate=N/A speed= 0x 
[AVIOContext @ 0x56051b84c8c0] Statistics: 0 seeks, 2 writeouts
frame= 1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:24.00 bitrate=N/A speed=0.47x 
video:465kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (test.mp4):
 Input stream #0:0 (video): 8761 packets read (96159422 bytes); 8760 frames decoded; 
 Input stream #0:1 (audio): 0 packets read (0 bytes); 
 Total: 8761 packets (96159422 bytes) demuxed
Output file #0 (.png):
 Output stream #0:0 (video): 1 frames encoded; 1 packets muxed (476224 bytes); 
 Total: 1 packets (476224 bytes) muxed
[AVIOContext @ 0x56051b4b5d00] Statistics: 107090352 bytes read, 18 seeks


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