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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (46)
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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 (...) -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users. -
Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...)
Sur d’autres sites (9410)
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Workaround to .ts files in video merging ?
15 avril 2017, par Neo HeraklesI’ve got these sentences of code that I use for video processing, the first one adds a watermark, the second creates a .ts file of the watermarked video and then adds an intro and outro to it but I found that it quickly fills disk space because of the .ts files being used, is there a way to achieve the same results without them ? Either by deleting them right after using them or by using a different process altogether.
for %%I in ("C:\Users\Administrator\Desktop\work\*.mp4") do ffmpeg.exe
-y -i "%%I" -i white.png -filter_complex "[0:v]scale=iw:ih[v0];[1:v][v0]scale2ref=iw/6:ih/18[logo][0v];[0v][logo]overlay=W-w-3:H-h-1[v]"
-map "[v]" -map 0:a -codec:v libx264 -preset ultrafast -crf 23 -codec:a copy "C:\Users\Administrator\Desktop\Complete-videos\%%~nI.mp4"
for %%I in ("C:\Users\Administrator\Desktop\Complete-videos\*.mp4") do ffmpeg -y
-i %%I -c copy -vbsf h264_mp4toannexb -f mpegts -s 1280*720 %%I.ts && ffmpeg -y -i "concat:out1.ts|%%I.ts|out1.ts" -c:v libx264 -strict experimental -bsf:a aac_adtstoasc -ar 48000 -r 20 "C:\Users\Administrator\Desktop\Complete-videos\%%~nI.mp4
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Use Static Library Build Shared Library Undefined Reference
26 mai 2020, par LeoI want to use AndroidStudio ndk-build to build Shared Library on Window with ffmpeg lib but i got Undefined Reference Error,Please tell me what I do wrong



ndkVersion = 21.0.6113669
compileSdkVersion 29



I also try to build By GCC , the same error happen
I also try to build By CMake with ffmpeg SourceCode , the same error happen



I try to build .a file with some simple C Code on gcc and use another C Code to use it,it work,but not with ffmpeg .a file i dont know why



this is my Android.mk



`LOCAL_PATH := $(call my-dir)
 include $(CLEAR_VARS)
 LOCAL_MODULE := avcodec
 LOCAL_SRC_FILES := lib/libavcodec.dll.a
 include $(PREBUILT_STATIC_LIBRARY)

 include $(CLEAR_VARS)
 LOCAL_MODULE := avformat
 LOCAL_SRC_FILES := lib/libavformat.dll.a
 include $(PREBUILT_STATIC_LIBRARY)

 ...

 include $(CLEAR_VARS)
 LOCAL_MODULE := avutil
 LOCAL_SRC_FILES := lib/libavutil.dll.a
 include $(PREBUILT_STATIC_LIBRARY)

 include $(CLEAR_VARS)
 LOCAL_MODULE := libTestDll
 LOCAL_SRC_FILES := TestDll.cpp
 LOCAL_C_MODULE := avcodec avformat swscale avutil avfilter avdevice

 include $(BUILD_SHARED_LIBRARY)`



this is my main cpp



#include 
#include 

#define __STDC_CONSTANT_MACROS

#include <string>

extern"C"
{
#include "libavformat/avformat.h"
#include "libavutil/mathematics.h"
#include "libavutil/time.h"
#include "libavutil/pixfmt.h"
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#include "libswscale/swscale.h"
#include "libavutil/imgutils.h"
}

using namespace std;

char output[99999];
int frameCount = 0;
uint8_t* buf;
int bufLength;
uint8_t* p_global_bgr_buffer;
int num_bytes;
int wrap;
bool EndReceFrame = false;
SwsContext* swsContext;
AVFrame* pFrame = av_frame_alloc();
AVCodecContext* pCodecContext;
AVPixelFormat dstFmt = AV_PIX_FMT_RGB24;

static void BGRpgm_save(AVFrame* frame)
{
 int linesize[8] = { frame->linesize[0] * 3 };

 uint8_t* bgr_buffer[8] = { p_global_bgr_buffer };

 sws_scale(swsContext, frame->data, frame->linesize, 0, frame->height, bgr_buffer, linesize);

 memcpy(buf, bgr_buffer[0], linesize[0] * frame->height);

 bufLength = linesize[0] * frame->height;

 frameCount++;

}
...

</string>


Error Message



[x86] SharedLibrary : libTestDll.so
jni/TestDll.cpp:123: error: undefined reference to 'avformat_open_input'
jni/TestDll.cpp:127: error: undefined reference to 'avformat_find_stream_info'
jni/TestDll.cpp:138: error: undefined reference to 'av_dump_format'
jni/TestDll.cpp:144: error: undefined reference to 'avcodec_find_decoder'
jni/TestDll.cpp:146: error: undefined reference to 'avcodec_alloc_context3'


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Moviepy write_videofile changes number of video and audio frames even after using 'rawvideo' as the codec parameter
14 mars 2019, par Jaideep SagarI am using moviepy (Python) to read video and audio frames of a video and after making some changes I am writing them back to a videofile, say new.avi, to preserve the changes, or to avoid compression, I am using codec= ’rawvideo’ in write_videofile function. But when I read the video and audio frames back, the number of video and audio frames are different than when they were when written, they are usually increased.
Can anybody tell me the reason, ? is it because of the ffmpeg used or some other reason ? Does it happen always or there is some problem in my machine ? Thank you :-)
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