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  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 est la première version de MediaSPIP stable.
    Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Comme pour la version précédente, 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 (...)

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (10748)

  • Concatenating slideshows and normal videos causes audio bleeding

    28 janvier 2019, par Zurechtweiser

    I noticed audio bleeding with concatenated videos containing alternating slideshows and normal videos.

    My commands

    ffmpeg -y -ss 00:00:04.391 -to 00:02:17.171 -i "test.MP4" -r 60 -c:v libx264 -af afade=t=in:ss=0:d=1,afade=t=out:st='00\:02\:11.780':d=1 25.mp4
    
ffmpeg -y -i 25.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts 25f.ts
    

    
ffmpeg -y -loop 1 -i "test.JPG" -t 2 -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -shortest -r 60 -c:v libx264 -c:a aac -pix_fmt yuv420p -vf scale=-2:1080,pad=width=1920:height=1080:x=240:y=0:color=black 26.mp4
    
ffmpeg -y -i 26.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts 26f.ts
    

    
ffmpeg -y -i "concat:25f.ts|26f.ts" -bsf:a aac_adtstoasc -movflags faststart -c copy "final.mp4"

    The rest of audio of test.MP4 bleeds into the beginning of the test.JPG-single frame slideshow.

    I presumed a different framerate to cause it, but adding -r 60 didn’t solve the issue.

    Also it seems that the video player interpretes the final video as a set of single videos, as whenever a "new" video shows up, it stutters slightly and loses framerate.

    How do I concat them without bleeding and create a final video without stuttering ?

    ffprobe -show_streams 25.mp4 :

    ffprobe version N-92246-gc2ac3b8e6a Copyright (c) 2007-2018 the FFmpeg developers
    
  built with gcc 8.2.1 (GCC) 20181017
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    
  libavutil      56. 19.101 / 56. 19.101
    
  libavcodec     58. 33.102 / 58. 33.102
    
  libavformat    58. 19.102 / 58. 19.102
    
  libavdevice    58.  4.106 / 58.  4.106
    
  libavfilter     7. 37.100 /  7. 37.100
    
  libswscale      5.  2.100 /  5.  2.100
    
  libswresample   3.  2.100 /  3.  2.100
    
  libpostproc    55.  2.100 / 55.  2.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '25.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.19.102
    
  Duration: 00:00:12.65, start: 0.000000, bitrate: 2040 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1215:1216 DAR 135:76], 1903 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandle
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandle
    
[STREAM]
    
index=0
    
codec_name=h264
    
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
profile=High
    
codec_type=video
    
codec_time_base=1/120
    
codec_tag_string=avc1
    
codec_tag=0x31637661
    
width=1920
    
height=1080
    
coded_width=1920
    
coded_height=1088
    
has_b_frames=2
    
sample_aspect_ratio=1215:1216
    
display_aspect_ratio=135:76
    
pix_fmt=yuv420p
    
level=42
    
color_range=unknown
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=left
    
field_order=unknown
    
timecode=N/A
    
refs=1
    
is_avc=true
    
nal_length_size=4
    
id=N/A
    
r_frame_rate=60/1
    
avg_frame_rate=60/1
    
time_base=1/15360
    
start_pts=0
    
start_time=0.000000
    
duration_ts=193792
    
duration=12.616667
    
bit_rate=1903528
    
max_bit_rate=N/A
    
bits_per_raw_sample=8
    
nb_frames=757
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=eng
    
TAG:handler_name=VideoHandle
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=aac
    
codec_long_name=AAC (Advanced Audio Coding)
    
profile=LC
    
codec_type=audio
    
codec_time_base=1/48000
    
codec_tag_string=mp4a
    
codec_tag=0x6134706d
    
sample_fmt=fltp
    
sample_rate=48000
    
channels=2
    
channel_layout=stereo
    
bits_per_sample=0
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/48000
    
start_pts=0
    
start_time=0.000000
    
duration_ts=606192
    
duration=12.629000
    
bit_rate=128049
    
max_bit_rate=128049
    
bits_per_raw_sample=N/A
    
nb_frames=593
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=eng
    
TAG:handler_name=SoundHandle
    
[/STREAM]

    ffprobe -show_streams 26.mp4 :

    ffprobe version N-92246-gc2ac3b8e6a Copyright (c) 2007-2018 the FFmpeg developers
    
  built with gcc 8.2.1 (GCC) 20181017
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    
  libavutil      56. 19.101 / 56. 19.101
    
  libavcodec     58. 33.102 / 58. 33.102
    
  libavformat    58. 19.102 / 58. 19.102
    
  libavdevice    58.  4.106 / 58.  4.106
    
  libavfilter     7. 37.100 /  7. 37.100
    
  libswscale      5.  2.100 /  5.  2.100
    
  libswresample   3.  2.100 /  3.  2.100
    
  libpostproc    55.  2.100 / 55.  2.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '26.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.19.102
    
  Duration: 00:00:03.95, start: 0.000000, bitrate: 1814 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 2272x4608 [SAR 1:1 DAR 71:144], 1798 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 2 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
[STREAM]
    
index=0
    
codec_name=h264
    
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
profile=High
    
codec_type=video
    
codec_time_base=1/120
    
codec_tag_string=avc1
    
codec_tag=0x31637661
    
width=2272
    
height=4608
    
coded_width=2272
    
coded_height=4608
    
has_b_frames=2
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=71:144
    
pix_fmt=yuv420p
    
level=60
    
color_range=unknown
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=left
    
field_order=unknown
    
timecode=N/A
    
refs=1
    
is_avc=true
    
nal_length_size=4
    
id=N/A
    
r_frame_rate=60/1
    
avg_frame_rate=60/1
    
time_base=1/15360
    
start_pts=0
    
start_time=0.000000
    
duration_ts=60672
    
duration=3.950000
    
bit_rate=1798815
    
max_bit_rate=N/A
    
bits_per_raw_sample=8
    
nb_frames=237
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=und
    
TAG:handler_name=VideoHandler
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=aac
    
codec_long_name=AAC (Advanced Audio Coding)
    
profile=LC
    
codec_type=audio
    
codec_time_base=1/44100
    
codec_tag_string=mp4a
    
codec_tag=0x6134706d
    
sample_fmt=fltp
    
sample_rate=44100
    
channels=2
    
channel_layout=stereo
    
bits_per_sample=0
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/44100
    
start_pts=0
    
start_time=0.000000
    
duration_ts=132300
    
duration=3.000000
    
bit_rate=2124
    
max_bit_rate=128000
    
bits_per_raw_sample=N/A
    
nb_frames=131
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=und
    
TAG:handler_name=SoundHandler
    
[/STREAM]

  • How to set normal speed of playback after capturing and transcoding stream video by `ffmpeg_streaming` in Python project ?

    30 avril 2020, par Harley Club

    Using ffmpeg_streaming module in Python project with Flask, I try to set up video streaming from online camera into local file. My purpose is receiving input stream that comes as HLS-compatible data. To implement this property, I've inserted some code accessible by this link :

    



    import ffmpeg_streaming
from ffmpeg_streaming import Formats, Bitrate, Representation, Size

from flask import render_template, Flask, send_from_directory, abort, json, Response  

import sys

app = Flask(__name__)

video = ffmpeg_streaming.input('http://wmccpinetop.axiscam.net/mjpg/video.mjpg')

_480p = Representation(Size(854, 480), Bitrate(750 * 1024, 192 * 1024))
hls_stream = video.hls(Formats.h264(), hls_list_size = 10, hls_time = 5)
hls_stream.representations(_480p)
hls_stream.output('/var/media/hls_outputs.m3u8')


    



    It works as expected, i.e. video stream gets written into local file, then I can see what camera shot somewhere far from there...But an only problem arises here which I can't manage : once playback starts, the video is being displayed utterly fast. Nearly 2 minutes period covered by camera (I can see how long real time was over due to camera-embedded timer option) has duration of 5 seconds when playing back. So, how do I want to enable video speed just as it fits into real-world timing ? My OS is Ubuntu 18.04 LTS and I open file with preinstalled Videos app to watch content.

    


  • avcodec/ffv1enc : Try to choose slice count so that slice packet sizes are within...

    15 juin 2017, par Michael Niedermayer
    avcodec/ffv1enc : Try to choose slice count so that slice packet sizes are within the supported size

    Fixes assertion failure
    

    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/ffv1enc.c

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