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The Great Big Beautiful Tomorrow
28 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Texte
Autres articles (56)
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Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras. -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (11876)
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capturing x11grab display from ffmpeg giveing "segmentation fault1 q=0.0"
26 juin 2019, par user2369563In Debian 9, I am trying to record screen using ffmpeg over x11grab. it's working great but sometimes its give error as shown below.
Any idea what causing this ?



exec error: Error: Command failed: ffmpeg -y -f x11grab -s 1920x1080 -framerate 30 -i :1.0+0,0 -vsync 1 -c:v libx264 -preset ultrafast -crf 0 -pix_fmt yuv444p output.mkv
ffmpeg version 3.2.14-1~deb9u1 Copyright (c) 2000-2019 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
[x11grab @ 0x55f87adcffa0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, x11grab, from ':1.0+0,0':
 Duration: N/A, start: 1561540173.584858, bitrate: N/A
 Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 30 fps, 1000k tbr, 1000k tbn, 1000k tbc
[libx264 @ 0x55f87adda860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x55f87adda860] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 0x55f87adda860] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=cqp mbtree=0 qp=0
Output #0, matroska, to 'output.mkv':
 Metadata:
 encoder : Lavf57.56.101
 Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1920x1080, q=-1--1, 30 fps, 1k tbn, 30 tbc
 Metadata:
 encoder : Lavc57.64.101 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
 Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Segmentation fault1 q=0.0 size= 10942kB time=00:00:02.40 bitrate=37332.4kbits/s speed=0.923x



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capturing x11grab display from ffmpeg giveing "segmentation fault1 q=0.0"
26 juin 2019, par user2369563In Debian 9, I am trying to record screen using ffmpeg over x11grab. it’s working great but sometimes its give error as shown below.
Any idea what causing this ?exec error: Error: Command failed: ffmpeg -y -f x11grab -s 1920x1080 -framerate 30 -i :1.0+0,0 -vsync 1 -c:v libx264 -preset ultrafast -crf 0 -pix_fmt yuv444p output.mkv
ffmpeg version 3.2.14-1~deb9u1 Copyright (c) 2000-2019 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
[x11grab @ 0x55f87adcffa0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, x11grab, from ':1.0+0,0':
Duration: N/A, start: 1561540173.584858, bitrate: N/A
Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 30 fps, 1000k tbr, 1000k tbn, 1000k tbc
[libx264 @ 0x55f87adda860] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x55f87adda860] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 0x55f87adda860] 264 - core 148 r2748 97eaef2 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=cqp mbtree=0 qp=0
Output #0, matroska, to 'output.mkv':
Metadata:
encoder : Lavf57.56.101
Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1920x1080, q=-1--1, 30 fps, 1k tbn, 30 tbc
Metadata:
encoder : Lavc57.64.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Segmentation fault1 q=0.0 size= 10942kB time=00:00:02.40 bitrate=37332.4kbits/s speed=0.923x -
ffmpeg rtsp protocol not found
8 janvier 2021, par fadeThe bug :
(base) [xc@localhost test]$ python rtsp2rtmp.py
command : ffmpeg -y -hwaccel_output_format cuda -hwaccel cuvid -probesize 42M -hwaccel_device 2 -f rawvideo -c:v hevc_cuvid -pix_fmt bgr24 -s 1920x1080 -r 25 -i rtsp ://admin:scut123456@192.168.1.43:554/Streaming/Channels/1 -c:v h264_nvenc -pix_fmt yuv420p -f flv rtmp ://192.168.1.23:1935/live/cam1
ffmpeg version 4.2 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 7 (GCC)
configuration : —enable-nonfree —enable-cuda-nvcc —enable-libnpp —enable-shared —enable-cuda —enable-cuvid —enable-nvenc —extra-cflags=-I/usr/local/cuda/include —extra-ldflags=-L/usr/local/cuda/lib64
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
rtsp ://admin:scut123456@192.168.1.43:554/Streaming/Channels/1 : Protocol not found
Did you mean file:rtsp ://admin:scut123456@192.168.1.43:554/Streaming/Channels/1 ?


The wrong code :
rtsp2rtmp.py


import time
import cv2
import subprocess as sp
import os

if __name__ == "__main__":
 sources = [
 "rtsp://admin:scut123456@192.168.1.43:554/Streaming/Channels/1"
 ]
 rtmpUrl_base = "rtmp://192.168.1.23:1935/live/cam"
 fps = '25'
 solution = (1920, 1080)
 rtmpUrl = rtmpUrl_base+str(1)
 command = ['ffmpeg',
 '-y',
 '-hwaccel_output_format', 'cuda',
 '-hwaccel', 'cuvid',
 '-probesize','42M',
 '-hwaccel_device', '2',
 '-f', 'rawvideo',
 '-c:v','hevc_cuvid',
 '-pix_fmt', 'bgr24',
 # '--enable-network', '--enable-protocol=tcp' ,'--enable-demuxer=rtsp' ,'--enable-decoder=h264',
 '-s', "{}x{}".format(solution[0], solution[1]), # 图片分辨率
 '-r', fps, # 视频帧率
 '-i', sources[0],
 # '-vf', 'scale_npp = {}:-1'.format(basic_data[0]), # 图片分辨率
 '-c:v', 'h264_nvenc',
 '-pix_fmt', 'yuv420p',
 '-f', 'flv',
 #'-pre','superfast',
 rtmpUrl]
 cmdString=' '.join(command)
 print("command:",cmdString)
 os.popen(cmd=cmdString);



This py runs on
centos7


However When I run the code below :
It is ok.


import time
import cv2
import subprocess as sp


def read(source, command):
 cap = cv2.VideoCapture(source)
 count = 0
 tick = time.time()
 push_p = sp.Popen(command, stdin=sp.PIPE)
 while cap.isOpened():
 _, frame = cap.read()
 # imgs[0] = frame
 if frame is None:
 continue 
 count += 1
 # print(frame.tostring())
 # pipe = sp.Popen(command, stdin=sp.PIPE, env=my_env)
 #print(push_p.poll())
 # print(frame.shape)
 push_p.stdin.write(frame.tostring())
 if count % 25 == 0:
 tock = time.time() 
 print('Read 25 frames in', tock - tick)
 tick = tock


if __name__ == '__main__':
 sources = [
 'rtsp://admin:scut123456@192.168.1.43:554/Streaming/Channels/1',
 ]
 rtmpUrl_base = "rtmp://192.168.1.23:1935/live/cam"
 fps = '25'
 solution = (1920, 1080)
 rtmpUrl = rtmpUrl_base+str(1)
 command = ['ffmpeg',
 '-hwaccel_output_format', 'cuda',
 '-hwaccel', 'cuvid',
 '-probesize','42M',
 '-hwaccel_device', '2',
 '-f', 'rawvideo','-re',
 # '-vcodec','hevc_cuvid',
 '-pix_fmt', 'bgr24',
 '-s', "{}x{}".format(solution[0], solution[1]), # 图片分辨率
 '-r', fps, # 视频帧率
 '-i', '-',
 # '-vf', 'scale_npp = {}:-1'.format(basic_data[0]), # 图片分辨率
 '-c:v', 'h264_nvenc',
 '-pix_fmt', 'yuv420p',
 '-f', 'flv',
 #'-pre','superfast',
 rtmpUrl]
 print("command: ",command)
 print('');
 read(sources[0], command)