
Recherche avancée
Médias (21)
-
1,000,000
27 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Demon Seed
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
The Four of Us are Dying
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Corona Radiata
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Lights in the Sky
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
-
Head Down
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (57)
-
MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
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 (...) -
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 (...)
Sur d’autres sites (6135)
-
Ffmpeg show an image for multiple seconds before a video without re-encoding
16 janvier 2016, par BoyenI’ve been looking all around for this. Problem is that most google searches end up with being about creating a video from solely PNG files.
I’ve found this command which does the job :ffmpeg -y -loop 1 -framerate 60 -t 5 -i firstimage.jpg -t 5 -f lavfi -i aevalsrc=0 -loop 1 -framerate 60 -t 5 -i secondimage.png -t 5 -f lavfi -i aevalsrc=0 -loop 1 -framerate 60 -t 5 -i thirdimage.png -t 5 -f lavfi -i aevalsrc=0 -i "shadowPlayVid.mp4" -filter_complex "[0:0][1:0][2:0][3:0][4:0][5:0][6:0][6:1] concat=n=4:v=1:a=1 [v] [a]" -map [v] -map [a] output.mp4 >> log_file1.txt 2>&1
But it seems to reencode the whole video, the input video is H.264 without CFR, but it seems to me that putting just some images before the video shouldn’t take too long.
Because it ends up encoding the whole thing, this takes about 2 hours with a video of 30 minutes on a strong computer, while I feel like without encoding this should be able to be done much quicker. How do I make sure it doesn’t re-encode while maintaining every image showing for 5 seconds first ?
-
ffmpeg to convert file to webm returns in error
14 avril 2019, par user3184895i have a self-recorded file in .ts format and want to convert it to three different formats(.mp4, .ogg and .webm).
for that i use my brandnew debian9 with following commands :
/usr/bin/ffmpeg -y -i source.ts -strict experimental -r 25 -b 18550k -bt 22792k -acodec aac -ac 2 -ar 48000 -ab 320k output.mp4
/usr/bin/ffmpeg -y -i source.ts -r 25 -b 18550k -bt 22792k -vcodec libtheora -acodec libvorbis -ac 2 -ar 48000 -ab 320k output.ogg
/usr/bin/ffmpeg -y -i source.ts -r 25 -b 18550k -bt 22792k -ac 2 -ar 48000 -ab 320k output.webm
Source-File :
General
ID : 1019 (0x3FB)
Complete name : test.ts
Format : MPEG-TS
File size : 85.9 MiB
Duration : 56 s 490 ms
Overall bit rate mode : Variable
Overall bit rate : 12.7 Mb/s
Video
ID : 5101 (0x13ED)
Menu ID : 10301 (0x283D)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 55 s 880 ms
Bit rate : 11.1 Mb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.241
Stream size : 74.1 MiB (86%)
Audio #1
ID : 5102 (0x13EE)
Menu ID : 10301 (0x283D)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 56 s 448 ms
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Compression mode : Lossy
Delay relative to video : -1 s 136 ms
Stream size : 1.72 MiB (2%)
Language : German
Audio #2
ID : 5103 (0x13EF)
Menu ID : 10301 (0x283D)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 56 s 448 ms
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Compression mode : Lossy
Delay relative to video : -1 s 136 ms
Stream size : 1.72 MiB (2%)
descriptor_tag_extension : 6
Audio #3
ID : 5106 (0x13F2)
Menu ID : 10301 (0x283D)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 6
Duration : 56 s 480 ms
Bit rate mode : Constant
Bit rate : 448 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 spf)
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -1 s 168 ms
Stream size : 3.02 MiB (4%)
Language : German
Text
ID : 5105 (0x13F1)
Menu ID : 10301 (0x283D)
Format : DVB Subtitle
Codec ID : 6
Duration : 54 s 800 ms
Delay relative to video : 2 s 520 ms
Language : German
Other
ID : 5104 (0x13F0)-100
Menu ID : 10301 (0x283D)
Format : Teletext
Language : German
Menu
ID : 5100 (0x13EC)
Menu ID : 10301 (0x283D)
Duration : 56 s 490 ms
List : 1170 (0x492) () / 1176 (0x498) () / 2171 (0x87B) () / 5101 (0x13ED) (AVC) / 5102 (0x13EE) (MPEG Audio, German) / 5103 (0x13EF) (MPEG Audio) / 5104 (0x13F0)-100 (Teletext, de) / 5105 (0x13F1) (DVB Subtitle, German) / 5106 (0x13F2) (AC-3, German) / 5108 (0x13F4) () / 5172 (0x1434) ()
Language : / / / / German / / German / German / GermanWhy i am doing that ? I just play arround with a privat intranet (web-application) to stream my own recorded files on different clients (Smartphone, Tablet, Desktop). Thats also the reason for the different formats (.mp4, .ogg, .webm)
My current problem is : The command to convert it to .webm returns following error :
/usr/bin/ffmpeg -y -i test.ts -r 25 -b 18550k -bt 22792k -ac 2 -ar 48000 -ab 320k output.webm
ffmpeg version 3.2.12-1~deb9u1 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration: --prefix=/usr --extra-version='1~deb9u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --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-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] SPS unavailable in decode_picture_timing
[h264 @ 0x557535b03b40] non-existing PPS 0 referenced
[h264 @ 0x557535b03b40] decode_slice_header error
[h264 @ 0x557535b03b40] no frame!
[mpegts @ 0x557535ade440] start time for stream 9 is not set in estimate_timings_from_pts
[mpegts @ 0x557535ade440] PES packet size mismatch
[mpegts @ 0x557535ade440] Could not find codec parameters for stream 0 (Unknown: none ([5][0][0][0] / 0x0005)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 0x557535ade440] Could not find codec parameters for stream 1 (Unknown: none ([12][0][0][0] / 0x000C)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 0x557535ade440] Could not find codec parameters for stream 2 (Unknown: none ([11][0][0][0] / 0x000B)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 0x557535ade440] Could not find codec parameters for stream 10 (Unknown: none ([11][0][0][0] / 0x000B)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mpegts, from 'test.ts':
Duration: 00:00:58.04, start: 86615.181389, bitrate: 12418 kb/s
Program 10301
Stream #0:0[0x492]: Unknown: none ([5][0][0][0] / 0x0005)
Stream #0:1[0x498]: Unknown: none ([12][0][0][0] / 0x000C)
Stream #0:2[0x87b]: Unknown: none ([11][0][0][0] / 0x000B)
Stream #0:3[0x13ed]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
Stream #0:4[0x13ee](deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 256 kb/s
Stream #0:5[0x13ef](mis): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 256 kb/s
Stream #0:6[0x13f0](deu): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
Stream #0:7[0x13f1](deu): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006) (hearing impaired)
Stream #0:8[0x13f2](deu): Audio: ac3 ([6][0][0][0] / 0x0006), 48000 Hz, stereo, fltp, 448 kb/s
Stream #0:9[0x13f4]: Data: bin_data ([6][0][0][0] / 0x0006)
Stream #0:10[0x1434]: Unknown: none ([11][0][0][0] / 0x000B)
Program 10302
Program 10303
Program 10304
Please use -b:a or -b:v, -b is ambiguous
[libvpx-vp9 @ 0x557535ba6d00] v1.6.1
Stream mapping:
Stream #0:3 -> #0:0 (h264 (native) -> vp9 (libvpx-vp9))
Stream #0:4 -> #0:1 (mp2 (native) -> opus (libopus))
Stream #0:6 -> #0:2 (dvb_teletext (libzvbi_teletextdec) -> webvtt (native))
Error while opening encoder for output stream #0:2 - maybe incorrect parameters such as bit_rate, rate, width or heighti dont understand the problem, because the convertions to .ogg or .mp4 are workin. So i cannot be a problem with the source-codecs. Does anyone have any idea what my problem might be
-
Overlay filter in LibAV/FFMpeg returns strange (tripled) frame in C
28 juillet 2014, par gkuczeraI tried to make a program, which merges two frames. I use LibAV (libav-win32-20140428) under Windows 7 64 and Visual Studio 2013.
But the result is quite odd.The filter which was used is Overlay. When I change the graph, to the one, that uses only one stream and add FADE effect, everything works like a charm. But OVERLAY and eg. DRAWBOX give me strange distortion (three frames on one and black and white effect). Here is the code :
static int init_filter_graph(AVFilterGraph **pGraph, AVFilterContext **pSrc1, AVFilterContext **pSink)
{
AVFilterGraph* tFilterGraph;
AVFilterContext* tBufferContext1;
AVFilter* tBuffer1;
AVFilterContext* tColorContext;
AVFilter* tColor;
AVFilterContext* tOverlayContext;
AVFilter* tOverlay;
AVFilterContext* tBufferSinkContext;
AVFilter* tBufferSink;
int tError;
/* Create a new filtergraph, which will contain all the filters. */
tFilterGraph = avfilter_graph_alloc();
if (!tFilterGraph) {
return -1;
}
{ // BUFFER FILTER 1
tBuffer1 = avfilter_get_by_name("buffer");
if (!tBuffer1) {
return -1;
}
tBufferContext1 = avfilter_graph_alloc_filter(tFilterGraph, tBuffer1, "src1");
if (!tBufferContext1) {
return -1;
}
av_dict_set(&tOptionsDict, "width", "320", 0);
av_dict_set(&tOptionsDict, "height", "240", 0);
av_dict_set(&tOptionsDict, "pix_fmt", "bgr24", 0);
av_dict_set(&tOptionsDict, "time_base", "1/25", 0);
av_dict_set(&tOptionsDict, "sar", "1", 0);
tError = avfilter_init_dict(tBufferContext1, &tOptionsDict);
av_dict_free(&tOptionsDict);
if (tError < 0) {
return tError;
}
}
{ // COLOR FILTER
tColor = avfilter_get_by_name("color");
if (!tColor) {
return -1;
}
tColorContext = avfilter_graph_alloc_filter(tFilterGraph, tColor, "color");
if (!tColorContext) {
return -1;
}
av_dict_set(&tOptionsDict, "color", "white", 0);
av_dict_set(&tOptionsDict, "size", "20x120", 0);
av_dict_set(&tOptionsDict, "framerate", "1/25", 0);
tError = avfilter_init_dict(tColorContext, &tOptionsDict);
av_dict_free(&tOptionsDict);
if (tError < 0) {
return tError;
}
}
{ // OVERLAY FILTER
tOverlay = avfilter_get_by_name("overlay");
if (!tOverlay) {
return -1;
}
tOverlayContext = avfilter_graph_alloc_filter(tFilterGraph, tOverlay, "overlay");
if (!tOverlayContext) {
return -1;
}
av_dict_set(&tOptionsDict, "x", "0", 0);
av_dict_set(&tOptionsDict, "y", "0", 0);
av_dict_set(&tOptionsDict, "main_w", "120", 0);
av_dict_set(&tOptionsDict, "main_h", "140", 0);
av_dict_set(&tOptionsDict, "overlay_w", "320", 0);
av_dict_set(&tOptionsDict, "overlay_h", "240", 0);
tError = avfilter_init_dict(tOverlayContext, &tOptionsDict);
av_dict_free(&tOptionsDict);
if (tError < 0) {
return tError;
}
}
{ // BUFFERSINK FILTER
tBufferSink = avfilter_get_by_name("buffersink");
if (!tBufferSink) {
return -1;
}
tBufferSinkContext = avfilter_graph_alloc_filter(tFilterGraph, tBufferSink, "sink");
if (!tBufferSinkContext) {
return -1;
}
tError = avfilter_init_str(tBufferSinkContext, NULL);
if (tError < 0) {
return tError;
}
}
// Linking graph
tError = avfilter_link(tBufferContext1, 0, tOverlayContext, 0);
if (tError >= 0) {
tError = avfilter_link(tColorContext, 0, tOverlayContext, 1);
}
if (tError >= 0) {
tError = avfilter_link(tOverlayContext, 0, tBufferSinkContext, 0);
}
if (tError < 0) {
return tError;
}
tError = avfilter_graph_config(tFilterGraph, NULL);
if (tError < 0) {
return tError;
}
*pGraph = tFilterGraph;
*pSrc1 = tBufferContext1;
*pSink = tBufferSinkContext;
return 0;
}What do you think is the reason ?