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Médias (1)
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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
Autres articles (95)
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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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Les tâches Cron régulières de la ferme
1er décembre 2010, parLa gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
Le super Cron (gestion_mutu_super_cron)
Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...) -
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 (...)
Sur d’autres sites (9856)
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can i stream "webpage" from ffmpeg ?
23 janvier 2017, par John SlovikaraHello everybody..
just need to know if i can stream "webpage-html" via FFmpeg ,
i have script in my server , i used it to stream live poll into facebook, just need to know if i can stream any html or web page.this is my stream code :
ffmpeg \
-re -y \
-loop 1 \
-f image2 \
-i images/stream.jpg \
-i /home/sounds/silence-loop.wav \
-acodec libfdk_aac \
-ac 1 \
-ar 44100 \
-b:a 128k \
-vcodec libx264 \
-pix_fmt yuv420p \
-vf scale=640:480 \
-r 30 \
-g 60 \
-f flv \
"rtmp://rtmp-api.facebook.com:80/rtmp/1270000000015267?ds=1&s_l=1&a=ATh1XXXXXXXXXXXuX" -
How to play avi files on browser
31 janvier 2017, par mvalencaaMy team needs to develop a system that plays avi files on the web. These files are recorded by a hardware whose firmware we don’t have access to. We are trying to negotiate it with the manufacturer to change the file format to mp4, but until now we have nothing.
Because of this, we are trying another manners to make it work. Our first attempt was to use FFMPEG to convert the files to mp4 (or webm or ogg), but this process takes too long because we have to do it everyday with a really huge amount of videos.
We also tried to use FFMPEG’s copy command (which is much faster), but the video always crashes at some point (mainly when we need to navigate in its timeline) and we don’t know why.
So now we are thinking to customize videojs flash player to reproduce the AVI files, but because we don’t have too much experience with video programming and flash, we don’t know if this is possible. Is it possible to write a decoder in action script to read avi files ?
I saw that Youtube and Facebook can play AVI files... How do they do this ? I have already looked a lot about it, but had no success.
EDIT 1
avi video file before copy command :
$ ffmpeg -i video.avi
ffmpeg version N-82324-g872b358 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dx va2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --ena ble-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enab le-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib openh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschr oedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheor a --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvo rbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --ena ble-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --e nable-decklink --enable-zlib
libavutil 55. 36.100 / 55. 36.100
libavcodec 57. 66.101 / 57. 66.101
libavformat 57. 57.100 / 57. 57.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 66.100 / 6. 66.100
libswscale 4. 3.100 / 4. 3.100
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, avi, from 'video.avi':
Metadata:
encoder :
Duration: 00:50:07.67, start: 0.000000, bitrate: 6 kb/s
Stream #0:0: Video: h264 (Constrained Baseline) (H264 / 0x34363248), yuv420p (progressive), 352x240, 3 fps, 3 tbr, 3 tbn, 6 tbc
At least one output file must be specifiedcopy command (with no audio stream because the videos don’t have it) :
$ ffmpeg -i video.avi -vcodec copy video.mp4
ffmpeg version N-82324-g872b358 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-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --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. 36.100 / 55. 36.100
libavcodec 57. 66.101 / 57. 66.101
libavformat 57. 57.100 / 57. 57.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 66.100 / 6. 66.100
libswscale 4. 3.100 / 4. 3.100
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, avi, from 'video.avi':
Metadata:
encoder :
Duration: 00:50:07.67, start: 0.000000, bitrate: 6 kb/s
Stream #0:0: Video: h264 (Constrained Baseline) (H264 / 0x34363248), yuv420p(progressive), 352x240, 3 fps, 3 tbr, 3 tbn, 6 tbc
Output #0, mp4, to 'video.mp4':
Metadata:
encoder : Lavf57.57.100
Stream #0:0: Video: h264 (Constrained Baseline) ([33][0][0][0] / 0x0021), yuv420p(progressive), 352x240, q=2-31, 3 fps, 3 tbr, 12288 tbn, 3 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[mp4 @ 0000000002513fc0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[NULL @ 0000000002524020] missing picture in access unit with size 16
Last message repeated 300 times
frame= 9324 fps=0.0 q=-1.0 Lsize= 1388kB time=01:38:27.66 bitrate= 1.9kbits/s speed=3.32e+004x
video:1354kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.493988%mp4 video file after copy command :
$ ffmpeg -i video.mp4
ffmpeg version N-82324-g872b358 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dx va2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --ena ble-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enab le-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib openh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschr oedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheor a --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvo rbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --ena ble-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --e nable-decklink --enable-zlib
libavutil 55. 36.100 / 55. 36.100
libavcodec 57. 66.101 / 57. 66.101
libavformat 57. 57.100 / 57. 57.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 66.100 / 6. 66.100
libswscale 4. 3.100 / 4. 3.100
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.57.100
Duration: 01:38:28.00, start: 0.000000, bitrate: 1 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yu v420p, 352x240, 1 kb/s, 1.58 fps, 3 tbr, 12288 tbn, 24576 tbc (default)
Metadata:
handler_name : VideoHandler
At least one output file must be specifiedEDIT 2
I uploaded two little samples if somebody wants to test :
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Adding the Transform video filter to ffmpeg
1er août 2016, par aaeimfirst off I’m new to ffmpeg, and stackoverflow. so sorry If I’m doing something wrong.
Earlier I commented on a post related to this but it got deleted because it was not an answer or something. So I’m asking my own question here.
I followed this instructions https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu
up untill Unzipping the ffmpeg file. Then I followed the facebook instructions
- Checkout the source for ffmpeg
- Copy vf_transform.c to the libavfilter subdirectory in ffmpeg source
- Edit libavfilter/allfilters.c and register the filter by adding the line : REGISTER_FILTER(TRANSFORM, transform, vf) ; in the video filter registration section
- Edit libavfilter/Makefile and add the filter to adding the line : OBJS-$(CONFIG_TRANSFORM_FILTER) += vf_transform.o in the filter section
- Configure and build ffmpeg as usual
and finally I ran the remaining instructions from the compilation guide.
I did the whole process a couple times but The result is always the same when I try to test.
ffmpeg version N-80901-gfebc862 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 48.101 / 57. 48.101
libavformat 57. 41.100 / 57. 41.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 47.100 / 6. 47.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Unknown filter 'transform'.I’m on elementary OS.
Thx and sorry if the post is all wrong.
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