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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
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13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
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MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
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Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
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13 avril 2011Unfortunately a software is never perfect.
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when i built ffmpeg to push raspberry pi 4 camera stream to my sever,I get Unknown input format : 'h264' ERROR
26 janvier 2021, par IOKE Baiinput :




raspivid -o - -t 0 -vf -hf -fps 10 -b 500000 | ffmpeg -re -ar 44100
-ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp ://111.111.111.111/live/stream




output :






ffmpeg version N-100793-gc7016e35a6 Copyright (c) 2000-2021
the FFmpeg developers
built with gcc 8 (Raspbian 8.3.0-6+rpi1)
configuration : —extra-ldflags=-latomic —enable-gpl —enable-version3 —enable-nonfree
—enable-static —disable-shared —prefix=/usr/local —disable-opencl —disable-thumb —disable-pic —disable-stripping
—enable-small —enable-ffmpeg —enable-ffplay —enable-ffprobe —disable-doc —disable-htmlpages —disable-podpages —disable-txtpages —disable-manpages —disable-everything —enable-libx264 —enable-encoder=libx264 —enable-encoder=h264
—enable-decoder=h264 —enable-decoder=pcm_s16le —enable-encoder=aac —enable-decoder=aac —enable-encoder=ac3 —enable-decoder=ac3 —enable-encoder=rawvideo —enable-decoder=rawvideo —enable-encoder=mjpeg —enable-decoder=mjpeg —enable-demuxer=concat —enable-muxer=flv —enable-demuxer=flv —enable-demuxer=live_flv —enable-muxer=hls —enable-muxer=segment —enable-muxer=stream_segment —enable-muxer=mov —enable-demuxer=mov —enable-muxer=mp4 —enable-muxer=mpegts —enable-demuxer=mpegts —enable-demuxer=mpegvideo —enable-muxer=matroska —enable-demuxer=matroska —enable-muxer=wav —enable-demuxer=wav —enable-muxer='pcm*' —enable-demuxer='pcm*' —enable-muxer=rawvideo —enable-demuxer=rawvideo —enable-muxer=rtsp —enable-demuxer=rtsp —enable-muxer=rtsp —enable-demuxer=sdp —enable-muxer=fifo —enable-muxer=tee —enable-parser=h264 —enable-parser=aac —enable-protocol=file —enable-protocol=tcp —enable-protocol=rtmp —enable-protocol=cache —enable-protocol=pipe —enable-filter=aresample —enable-filter=allyuv —enable-filter=scale —enable-libfreetype —enable-indev=v4l2 —enable-indev=alsa —enable-omx —enable-omx-rpi —enable-encoder=h264_omx —enable-mmal —enable-hwaccel=h264_mmal —enable-decoder=h264_mmal
libavutil 56. 63.101 / 56. 63.101
libavcodec 58.118.100 / 58.118.100
libavformat 58. 65.101 / 58. 65.101
libavdevice 58. 11.103 / 58. 11.103
libavfilter 7. 97.100 / 7. 97.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, s16le, from '/dev/zero' :
Duration : N/A, bitrate : 1411 kb/s
Stream #0:0 : Audio : pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s






ERROR




Unknown input format : 'h264'




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No such filter : 'xfade_opencl' on ffmpeg latest snapshot
23 janvier 2021, par jsalujaI wrote a custom transition kernel, and ran into No such filter : 'xfade_opencl' on the latest snapshot of ffmpeg


ffmpeg -filters doesnt list xfade_opencl


ffmpeg version N-100739-gda607832b5-tessu


Did anyone successfuly use xfade_opencl ?


====


ffmpeg version N-100739-gda607832b5-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2000-2021 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.17)
configuration : —cc=/usr/bin/clang —prefix=/opt/ffmpeg —extra-version=tessus —enable-avisynth —enable-fontconfig —enable-gpl —enable-libaom —enable-libass —enable-libbluray —enable-libdav1d —enable-libfreetype —enable-libgsm —enable-libmodplug —enable-libmp3lame —enable-libmysofa —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenh264 —enable-libopenjpeg —enable-libopus —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvmaf —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxavs —enable-libxvid —enable-libzimg —enable-libzmq —enable-libzvbi —enable-version3 —pkg-config-flags=—static —disable-ffplay
libavutil 56. 63.101 / 56. 63.101
libavcodec 58.117.101 / 58.117.101
libavformat 58. 65.101 / 58. 65.101
libavdevice 58. 11.103 / 58. 11.103
libavfilter 7. 96.100 / 7. 96.100
libswscale 5. 8.100 / 5. 8.100
libswresample 3. 8.100 / 3. 8.100
libpostproc 55. 8.100 / 55. 8.100


===


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avformat_close_input memory leak ?
20 janvier 2021, par Keen JackdawI developed an app to push live stream with ffmpeg. When I checked the app with
leaks --atExit -- <the app="app"></the>
(I'm on mac), I found some memory leak with AVFormatContext.

The minimized code are provided below :


#include <iostream>

extern "C" {
#include <libavcodec></libavcodec>avcodec.h>
#include <libavformat></libavformat>avformat.h>
#include <libavdevice></libavdevice>avdevice.h>
}

void foo() {
 avdevice_register_all();

 AVFormatContext *avInputFormatContext = avformat_alloc_context();
 AVInputFormat *avInputFormat = av_find_input_format("avfoundation");
 std::cout << "open input" << std::endl;
 int ret = avformat_open_input(&avInputFormatContext, "Capture screen 0", avInputFormat, nullptr);
 if (ret < 0) { std::cout << "open input failed: " << ret << std::endl; return;}

 avformat_close_input(&avInputFormatContext);

}

int main() {
 foo();
 return 0;
}

</iostream>


The output is


Process: ffmpegtest [87726]
Path: /Users/USER/*/ffmpegtest
Load Address: 0x10a752000
Identifier: ffmpegtest
Version: ???
Code Type: X86-64
Platform: macOS
Parent Process: leaks [87725]

Date/Time: 2021-01-20 15:44:57.533 +0800
Launch Time: 2021-01-20 15:44:55.760 +0800
OS Version: macOS 11.1 (20C69)
Report Version: 7
Analysis Tool: /Applications/Xcode.app/Contents/Developer/usr/bin/leaks
Analysis Tool Version: Xcode 12.3 (12C33)

Physical footprint: 9.9M
Physical footprint (peak): 10.6M
----

leaks Report Version: 4.0
Process 87726: 14143 nodes malloced for 2638 KB
Process 87726: 1 leak for 32 total leaked bytes.

 1 (32 bytes) ROOT LEAK: 0x7f8c61e1b040 [32] length: 16 "Capture screen 0"



Did I miss something ?