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• How does a video editor app do fast realtime rendering ? [closed]

  14 février 2023, par aya Cangtip

  I plan to make a video editor using the Flutter framework, but I'm still having trouble doing realtime rendering. How do I do fast realtime rendering ?

  


• FFmpeg pseudocolor filter - Option 'p' not found Error initializing filter 'pseudocolor' with args 'p=inferno'

  5 février 2023, par Greynol4

  I'm trying to process output from a uvc camera using ffmpeg. The original command that I was given that works on another linux distribution is :

  


  ffmpeg -input_format yuyv422 -video_size 256x384 -i /dev/video0 -vf 'crop=h=(ih/2):y=(ih/2)' -pix_fmt yuyv422 -f rawvideo - | ffplay -pixel_format gray16le -video_size 256x192 -f rawvideo -i - -vf 'normalize=smoothing=10, format=pix_fmts=rgb48, pseudocolor=p=inferno'

  


  (yes it works on his machine, I've seen the screen capture)

  


  I can get everything but the pseudocolor filter to work and this command works fine if i just delete , pseudocolor=p=inferno

  


  This is for processing the stream from a thermal camera that outputs raw data as video which necessitates the cropping and processing and is also why the resolution is so low.

  


  No matter what I do, it throws - Option 'p' not found Error initializing filter 'pseudocolor' with args 'p=inferno' \[rawvideo @ 0x625007a0\] Packet corrupt (stream = 0, dts = 3).=0/0 
I have modified it for my needs but I still cant get the pseudocolor filter to use the presets.

  


  The full configuration and output are below. This is a raspberry pi 3B+ running bullseye that I've reinstalled multiple times without resolution of this problem.

  


  


  `ffmpeg version 4.3.5-0+deb11u1+rpt3 Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 10 (Raspbian 10.2.1-6+rpi1)
configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —enable-shared —libdir=/usr/lib/arm-linux-gnueabihf —cpu=arm1176jzf-s —arch=arm
WARNING : library configuration mismatch
avutil configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
avcodec configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
avformat configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
avdevice configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
avfilter configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
avresample configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
swscale configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
swresample configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
postproc configuration : —prefix=/usr —extra-version=0+deb11u1+rpt3 —toolchain=hardened —incdir=/usr/include/arm-linux-gnueabihf —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libdav1d —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librabbitmq —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libsrt —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opencl —enable-opengl —enable-sdl2 —enable-mmal —enable-neon —enable-rpi —enable-v4l2-request —enable-libudev —enable-epoxy —enable-pocketsphinx —enable-libdc1394 —enable-libdrm —enable-vout-drm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libx264 —libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp —cpu=cortex-a7 —arch=armv6t2 —disable-thumb —enable-shared —disable-doc —disable-programs
libavutil 56. 51.100 / 56. 51.100
libavcodec 58. 91.100 / 58. 91.100
libavformat 58. 45.100 / 58. 45.100
libavdevice 58. 10.100 / 58. 10.100
libavfilter 7. 85.100 / 7. 85.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 7.100 / 5. 7.100
libswresample 3. 7.100 / 3. 7.100
libpostproc 55. 7.100 / 55. 7.100
Input #0, video4linux2,v4l2, from '/dev/video0':B sq= 0B f=0/0
  
Duration : N/A, start : 25563.182409, bitrate : 39321 kb/s
Stream #0:0 : Video : rawvideo (YUY2 / 0x32595559), yuyv422, 256x384, 39321 kb/s, 25 fps, 25 tbr, 1000k tbn, 1000k tbc
Stream mapping :
Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
Press [q] to stop, [?] for help
Output #0, rawvideo, to 'pipe :' :
Metadata :
encoder : Lavf58.45.100
Stream #0:0 : Video : rawvideo (YUY2 / 0x32595559), yuyv422, 256x192, q=2-31, 19660 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata :
encoder : Lavc58.91.100 rawvideo
Input #0, rawvideo, from 'pipe :' : 0KB vq= 0KB sq= 0B f=0/0
  
Duration : N/A, start : 0.000000, bitrate : 19660 kb/s
Stream #0:0 : Video : rawvideo (Y1[0][16] / 0x10003159), gray16le, 256x192, 19660 kb/s, 25 tbr, 25 tbn, 25 tbc
[Parsed_pseudocolor_2 @ 0x62f02760] Option 'p' not found
Error initializing filter 'pseudocolor' with args 'p=inferno'
[rawvideo @ 0x625007a0] Packet corrupt (stream = 0, dts = 1).

  


  av_interleaved_write_frame() : Broken pipe
Error writing trailer of pipe: : Broken pipe
frame= 3 fps=0.0 q=-0.0 Lsize= 224kB time=00:00:00.12 bitrate=15291.7kbits/s speed=0.977x
  
video:288kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : unknown
Conversion failed !`

  


  


  The examples for the presets in the documentation are lacking but that makes me think that it shouldn't be giving this much trouble and I'm overlooking something.

  


  I plan on integrating this but can't until I can proceed with this proof of concept.

  


  Thanks for any help !

  


• Evolution #3820 : modération des inscriptions de rédacteur

  5 septembre 2016, par b b

  Quelques remarques que je postais sur IRC à ce sujet :

  Ça fait chier, on va devoir ajouter une chaîne de langue, du coup ça ne sera pas reportable en 3.0 et 2.1.

  Techniquement, on doit pouvoir tout gérer depuis action/inscrire_auteur, le plan :

  • toujours envoyer le mail de confirmation au nouvel auteur, mais sans le lien de confirmation dedans
  • envoyer le mail de confirmation avec le lien de validation aux admins

  Par contre, si on a pas de page de gestion des inscriptions en attente, ça va être la merde à gérer. Si un admin ne reçoit pas le mail de confirmation ou qu’il passe dans ses spams, comment il fait pour valider le compte en attente ?

  Je ne suis pas certain que ça soit une modif mineure.