Recherche avancée

Médias (1)

Mot : - Tags -/musée

Autres articles (55)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The 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.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

Sur d’autres sites (10812)

  • how to use ffmpeg with mjpeg_vaapi encoder (with hardware acceleration) ?

    8 août 2018, par Marat

    When I use ffmpeg with mjpeg encoder without hardware acceleration, everything works fine. I use following command :

    ffmpeg -nostdin -rtsp_transport udp_multicast -allowed_media_types 'video' -i 'rtsp://MYIP' -ss 00:00:0.00 -f image2pipe -q:v 24 -vf scale=-2:480,format=yuv420p -c:v mjpeg -vframes 1 pipe:1

    But, when I try to use mjpeg with hardware acceleration, I always get error :

    ffmpeg -nostdin -rtsp_transport udp_multicast -allowed_media_types 'video' -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i 'rtsp://MYIP' -ss 00:00:0.00 -f image2pipe -q:v 24 -vf scale=-2:480,format=yuv420p -c:v mjpeg_vaapi -vframes 1 pipe:1
    
ffmpeg version N-91514-gc51e0cd Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
    
  configuration: --pkg-config-flags=--static
    
  libavutil      56. 18.102 / 56. 18.102
    
  libavcodec     58. 21.106 / 58. 21.106
    
  libavformat    58. 17.101 / 58. 17.101
    
  libavdevice    58.  4.101 / 58.  4.101
    
  libavfilter     7. 26.100 /  7. 26.100
    
  libswscale      5.  2.100 /  5.  2.100
    
  libswresample   3.  2.100 /  3.  2.100
    
libva info: VA-API version 0.39.0
    
libva info: va_getDriverName() returns 0
    
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
    
libva info: Found init function __vaDriverInit_0_39
    
libva info: va_openDriver() returns 0
    
Input #0, rtsp, from 'rtsp://MYIP':
    
  Metadata:
    
    title           : Session streamed with GStreamer
    
    comment         : rtsp-server
    
  Duration: N/A, start: 0.180600, bitrate: N/A
    
    Stream #0:0: Video: h264 (Main), yuvj420p(pc, progressive), 800x600, 50 fps, 50 tbr, 90k tbn, 100 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (mjpeg_vaapi))
    
Impossible to convert between the formats supported by the filter 'graph 0 input from stream 0:0' and the filter 'auto_scaler_0'
    
Error reinitializing filters!
    
Failed to inject frame into filter network: Function not implemented
    
Error while processing the decoded data for stream #0:0
    
Conversion failed!

    I tried with some additional options but it still keeps failing :

    ffmpeg -nostdin -rtsp_transport udp_multicast -allowed_media_types 'video' -hwaccel vaapi -vaapi_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i 'rtsp://MYIP' -ss 00:00:0.00 -f image2pipe -q:v 24 -vf "scale_vaapi=w=800:h=600" -b:v 700k -r 25 -vcodec mjpeg_vaapi -vframes 1 pipe:1                
    
ffmpeg version N-91514-gc51e0cd Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
    
  configuration: --pkg-config-flags=--static
    
  libavutil      56. 18.102 / 56. 18.102
    
  libavcodec     58. 21.106 / 58. 21.106
    
  libavformat    58. 17.101 / 58. 17.101
    
  libavdevice    58.  4.101 / 58.  4.101
    
  libavfilter     7. 26.100 /  7. 26.100
    
  libswscale      5.  2.100 /  5.  2.100
    
  libswresample   3.  2.100 /  3.  2.100
    
libva info: VA-API version 0.39.0
    
libva info: va_getDriverName() returns 0
    
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
    
libva info: Found init function __vaDriverInit_0_39
    
libva info: va_openDriver() returns 0
    
Input #0, rtsp, from 'rtsp://MYIP':
    
  Metadata:
    
    title           : Session streamed with GStreamer
    
    comment         : rtsp-server
    
  Duration: N/A, start: 0.179933, bitrate: N/A
    
    Stream #0:0: Video: h264 (Main), yuvj420p(pc, progressive), 800x600, 50 fps, 50 tbr, 90k tbn, 100 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (mjpeg_vaapi))
    
[mjpeg_vaapi @ 0x374cd80] Encoding entrypoint not found (12 / 7).
    
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
    
Conversion failed!

    Can please anyone suggest right options to make it work ?

  • avformat/mov : Check default_encrypted_sample before use in mov_read_sample_encryption...

    21 juillet 2018, par Michael Niedermayer
    avformat/mov : Check default_encrypted_sample before use in mov_read_sample_encryption_info()

    Fixes : 2018-0721-sample
    
Fixes : null pointer dereference
    

    Found-by : Nikita Knyzhov (knnikita@yandex.ru)
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavformat/mov.c

  • FFmpeg drawtext=enable'between(t,0,5)' not working

    24 juillet 2018, par Avani

    I’m trying to draw text on a video at different time intervals using ffmpeg. Below is my instruction :

        ffmpeg -i input.mp4 -vf "drawtext=fontfile='C:\arial.ttf':text='Text1':x=5:y=20Ûmax_glyph_a:fontsize=24:fontcolor=yellow:box=1:boxcolor=black@0.5:boxborderw=5:enable='between(t,0,20)', drawtext=fontfile='C:\arial.ttf':text='Text2':x=100:y=20Ûmax_glyph_a:fontsize=24:fontcolor=yellow:enable='between(t,5,20)', drawtext=fontfile='C:\arial.ttf':text='Text3':x=200:y=20Ûmax_glyph_a:fontsize=24:fontcolor=yellow:enable='between(t,10,20)'" output.mp4

    I’m trying to draw text in a horizontal line and I want only Text1 for the first 5 seconds, and then Text2 starting from 5 seconds to 20 seconds, and Text3 starting from 10 seconds till the end.

    When I do this, my first text stays for about 15 seconds and the last two show up in the last 4 seconds of the video. Is there something wrong with my instruction ? Am I using the enable between correctly ?

    Below is the Log for ffmpeg -i input.mp4 -vf showinfo -vsync 0 -f null - :

        ffmpeg version N-91399-g9f0077cc03 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 7.3.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --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. 18.102 / 56. 18.102
    
  libavcodec     58. 20.104 / 58. 20.104
    
  libavformat    58. 17.101 / 58. 17.101
    
  libavdevice    58.  4.101 / 58.  4.101
    
  libavfilter     7. 25.100 /  7. 25.100
    
  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 'onlyVideo.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2mp41
    
    encoder         : Lavf56.37.100
    
  Duration: 00:00:20.00, start: 0.000000, bitrate: 73 kb/s
    
    Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x720 [SAR 1:1 DAR 8:9], 73 kb/s, 0.20 fps, 0.20 tbr, 16384 tbn, 1 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg4 (native) -> wrapped_avframe (native))
    
Press [q] to stop, [?] for help
    
[Parsed_showinfo_0 @ 0000019e4ef73140] config in time_base: 1/16384, frame_rate: 1/5
    
[Parsed_showinfo_0 @ 0000019e4ef73140] config out time_base: 0/0, frame_rate: 0/0
    
[Parsed_showinfo_0 @ 0000019e4ef73140] n:   0 pts:      0 pts_time:0       pos:       44 fmt:yuv420p sar:1/1 s:640x720 i:P iskey:1 type:I checksum:850631B2 plane_checksum:[6C2678F8 6C5D6575 C2075336] mean:[191 121 133 ] stdev:[67.7 11.8 8.5 ]
    
[Parsed_showinfo_0 @ 0000019e4ef73140]   side data - unknown side data type 17 (1845 bytes)
    
[Parsed_showinfo_0 @ 0000019e4ef73140]   side data - unknown side data type 16 (8 bytes)
    
Output #0, null, to 'pipe:':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2mp41
    
    encoder         : Lavf58.17.101
    
    Stream #0:0(und): Video: wrapped_avframe, yuv420p, 640x720 [SAR 1:1 DAR 8:9], q=2-31, 200 kb/s, 0.20 fps, 0.20 tbn, 0.20 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
      encoder         : Lavc58.20.104 wrapped_avframe
    
[Parsed_showinfo_0 @ 0000019e4ef73140] n:   1 pts:  81920 pts_time:5       pos:    37980 fmt:yuv420p sar:1/1 s:640x720 i:P iskey:0 type:P checksum:D4B0BD28 plane_checksum:[E0310E7B DC71FA0B 97BCB493] mean:[31 127 132 ] stdev:[25.6 28.9 27.1 ]
    
[Parsed_showinfo_0 @ 0000019e4ef73140]   side data - unknown side data type 17 (1845 bytes)
    
[Parsed_showinfo_0 @ 0000019e4ef73140]   side data - unknown side data type 16 (8 bytes)
    
frame=    2 fps=0.0 q=-0.0 size=N/A time=00:00:10.00 bitrate=N/A speed=11.1x    
    
[Parsed_showinfo_0 @ 0000019e4ef73140] n:   2 pts: 163840 pts_time:10      pos:    67732 fmt:yuv420p sar:1/1 s:640x720 i:P iskey:0 type:P checksum:9FC30D4F plane_checksum:[1F10F7EB 45F39329 BED7821D] mean:[60 123 125 ] stdev:[61.8 11.0 5.5 ]
    
[Parsed_showinfo_0 @ 0000019e4ef73140]   side data - unknown side data type 17 (1845 bytes)
    
[Parsed_showinfo_0 @ 0000019e4ef73140]   side data - unknown side data type 16 (8 bytes)
    
[Parsed_showinfo_0 @ 0000019e4ef73140] n:   3 pts: 245760 pts_time:15      pos:   133778 fmt:yuv420p sar:1/1 s:640x720 i:P iskey:0 type:P checksum:9F501A92 plane_checksum:[D1B4E4A7 C4CD0DFA EB7E27E2] mean:[162 129 139 ] stdev:[71.7 27.3 37.2 ]
    
[Parsed_showinfo_0 @ 0000019e4ef73140]   side data - unknown side data type 17 (1845 bytes)
    
[Parsed_showinfo_0 @ 0000019e4ef73140]   side data - unknown side data type 16 (8 bytes)
    
frame=    4 fps=0.0 q=-0.0 Lsize=N/A time=00:00:20.00 bitrate=N/A speed=21.7x    
    
video:2kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

Navigation