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  • L’utiliser, en parler, le critiquer

    10 avril 2011

    La première attitude à adopter est d’en parler, soit directement avec les personnes impliquées dans son développement, soit autour de vous pour convaincre de nouvelles personnes à l’utiliser.
    Plus la communauté sera nombreuse et plus les évolutions seront rapides ...
    Une liste de discussion est disponible pour tout échange entre utilisateurs.

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Mediabox : ouvrir les images dans l’espace maximal pour l’utilisateur

    8 février 2011, par

    La visualisation des images est restreinte par la largeur accordée par le design du site (dépendant du thème utilisé). Elles sont donc visibles sous un format réduit. Afin de profiter de l’ensemble de la place disponible sur l’écran de l’utilisateur, il est possible d’ajouter une fonctionnalité d’affichage de l’image dans une boite multimedia apparaissant au dessus du reste du contenu.
    Pour ce faire il est nécessaire d’installer le plugin "Mediabox".
    Configuration de la boite multimédia
    Dès (...)

Sur d’autres sites (10008)

  • lavc/vp9dsp : restrict vertical intra pointers

    22 juillet 2024, par Rémi Denis-Courmont
    lavc/vp9dsp : restrict vertical intra pointers
    

    This lets the compiler unroll ever so slightly better (at least in the
    16x16 case for RISC-V GCC).

    • [DH] libavcodec/vp9dsp_template.c
  • RaspberryPi HQ camera not working with FFMPEG [closed]

    12 mars 2024, par GeeTee

    I just want to prefix this by saying I'm still quite fresh to linux so please bare with me as I don't always know exactly what I'm looking at.

    


    Hardware : Raspberry Pi 5 4GB / Pi HQ camera (connected with adapter cable)
OS : Debain V12 (bookworm)
FFMPEG : ffmpeg version 5.1.4-0+rpt3+deb12u1
I2C = Enabled
X / Wayland : Wayland (had to use this for VNC)

    


    I know the camera works as : when I use rpicam-vid -t 0 I have a working preview without issue (albeit slightly stuttery)

    


    When I try to enter ffmpeg -f v4l2 -i /dev/video0 I get the following :
(with the goal of having some video in a preview window)

    


    [video4linux2,v4l2 @ 0x5555a0811a20] ioctl(VIDIOC_G_PARM): Inappropriate ioctl for device
[video4linux2,v4l2 @ 0x5555a0811a20] Time per frame unknown
[video4linux2,v4l2 @ 0x5555a0811a20] ioctl(VIDIOC_STREAMON): Invalid argument
/dev/video0: Invalid argument


    


    I have also tried ffplay -f v4l2 -i /dev/video0 and get the same error as above.

    


    Following other forums I've tried (I'm not sure this is all necessary but to cover all bases, and save time) :

    


    Prompt : ffmpeg -sources device /dev/video0
Out : none (as in libpostproc    56.  6.100 / 56.  6.100 is the last line)

    


    Promt : v4l2-ctl --list-devices
Out :

    


    pispbe (platform:1000880000.pisp_be):
    /dev/video20
    /dev/video21
    /dev/video22
    /dev/video23
    /dev/video24
    /dev/video25
    /dev/video26
    /dev/video27
    /dev/video28
    /dev/video29
    /dev/video30
    /dev/video31
    /dev/video32
    /dev/video33
    /dev/video34
    /dev/video35
    /dev/video36
    /dev/video37
    /dev/media1
    /dev/media2

rp1-cfe (platform:1f00110000.csi):
    /dev/video0
    /dev/video1
    /dev/video2
    /dev/video3
    /dev/video4
    /dev/video5
    /dev/video6
    /dev/video7
    /dev/media0

rpivid (platform:rpivid):
    /dev/video19
    /dev/media3


    


    (seems to me rp1-cfe is what I want / need ? which is good that it shows up ?)

    


    Prompt : strace cat /dev/video0
Out :

    


    execve("/usr/bin/cat", ["cat", "/dev/video0"], 0x7fffc4c80c38 /* 41 vars */) = 0
brk(NULL)                               = 0x55567d41c000
faccessat(AT_FDCWD, "/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=80471, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 80471, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fff59df4000
close(3)                                = 0
openat(AT_FDCWD, "/lib/aarch64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0py\2\0\0\0\0\0"..., 832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=1651472, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 1826976, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fff59c34000
mmap(0x7fff59c40000, 1761440, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0x7fff59c40000
munmap(0x7fff59c34000, 49152)           = 0
munmap(0x7fff59df0000, 8352)            = 0
mprotect(0x7fff59dc8000, 81920, PROT_NONE) = 0
mmap(0x7fff59ddc000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18c000) = 0x7fff59ddc000
mmap(0x7fff59de4000, 41120, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fff59de4000
close(3)                                = 0
set_tid_address(0x7fff59e4b010)         = 1526021
set_robust_list(0x7fff59e4b020, 24)     = 0
rseq(0x7fff59e4b660, 0x20, 0, 0xd428bc00) = 0
mprotect(0x7fff59ddc000, 16384, PROT_READ) = 0
mprotect(0x5556410fc000, 16384, PROT_READ) = 0
mprotect(0x7fff59e44000, 16384, PROT_READ) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
munmap(0x7fff59df4000, 80471)           = 0
getrandom("\x5c\x96\x77\x22\xd2\x25\xd3\x23", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55567d41c000
brk(0x55567d440000)                     = 0x55567d440000
openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=3048976, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 3048976, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fff59954000
close(3)                                = 0
newfstatat(1, "", {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0x1), ...}, AT_EMPTY_PATH) = 0
openat(AT_FDCWD, "/dev/video0", O_RDONLY) = 3
newfstatat(3, "", {st_mode=S_IFCHR|0660, st_rdev=makedev(0x51, 0x13), ...}, AT_EMPTY_PATH) = 0
fadvise64(3, 0, 0, POSIX_FADV_SEQUENTIAL) = 0
mmap(NULL, 163840, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fff5992c000
read(3, 0x7fff59930000, 131072)         = -1 EINVAL (Invalid argument)
write(2, "cat: ", 5cat: )                    = 5
write(2, "/dev/video0", 11/dev/video0)             = 11
openat(AT_FDCWD, "/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 4
newfstatat(4, "", {st_mode=S_IFREG|0644, st_size=2996, ...}, AT_EMPTY_PATH) = 0
read(4, "# Locale name alias data base.\n#"..., 4096) = 2996
read(4, "", 4096)                       = 0
close(4)                                = 0
openat(AT_FDCWD, "/usr/share/locale/en_GB.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en_GB.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en_GB/LC_MESSAGES/libc.mo", O_RDONLY) = 4
newfstatat(4, "", {st_mode=S_IFREG|0644, st_size=1433, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 1433, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7fff59e34000
close(4)                                = 0
openat(AT_FDCWD, "/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
write(2, ": Invalid argument", 18: Invalid argument)      = 18
write(2, "\n", 1
)                       = 1
munmap(0x7fff5992c000, 163840)          = 0
close(3)                                = 0
close(1)                                = 0
close(2)                                = 0
exit_group(1)                           = ?
+++ exited with 1 +++


    


    (no idea what I'm reading here and if it's good or bad so I included it all)

    


    Prompt : ffmpeg -f v4l2 -list_formats all -i /dev/video0
Out :

    


    [video4linux2,v4l2 @ 0x55561cd9da20] Raw       :     yuyv422 :           YUYV 4:2:2 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :     uyvy422 :           UYVY 4:2:2 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported :           YVYU 4:2:2 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported :           VYUY 4:2:2 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :    rgb565le :     16-bit RGB 5-6-5 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :    rgb565be :  16-bit RGB 5-6-5 BE : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :    rgb555le : 16-bit A/XRGB 1-5-5-5 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :    rgb555be : 16-bit A/XRGB 1-5-5-5 BE : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :       rgb24 :     24-bit RGB 8-8-8 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :       bgr24 :     24-bit BGR 8-8-8 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :        0rgb : 32-bit A/XRGB 8-8-8-8 : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : bayer_bggr8 : 8-bit Bayer BGBG/GRGR : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : bayer_gbrg8 : 8-bit Bayer GBGB/RGRG : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : bayer_grbg8 : 8-bit Bayer GRGR/BGBG : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : bayer_rggb8 : 8-bit Bayer RGRG/GBGB : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 10-bit Bayer BGBG/GRGR Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 10-bit Bayer GBGB/RGRG Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 10-bit Bayer GRGR/BGBG Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 10-bit Bayer RGRG/GBGB Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 12-bit Bayer BGBG/GRGR Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 12-bit Bayer GBGB/RGRG Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 12-bit Bayer GRGR/BGBG Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 12-bit Bayer RGRG/GBGB Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 14-bit Bayer BGBG/GRGR Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 14-bit Bayer GBGB/RGRG Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 14-bit Bayer GRGR/BGBG Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 14-bit Bayer RGRG/GBGB Packed : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 16-bit Bayer BGBG/GRGR : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 16-bit Bayer GBGB/RGRG : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 16-bit Bayer GRGR/BGBG : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 16-bit Bayer RGRG/GBGB : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Compressed: Unsupported : PiSP Bayer Compressed Format : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Compressed: Unsupported : PiSP Bayer Compressed Format : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Compressed: Unsupported : PiSP Bayer Compressed Format : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Compressed: Unsupported : PiSP Bayer Compressed Format : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :        gray :      8-bit Greyscale : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 10-bit Greyscale (MIPI Packed) : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 12-bit Greyscale (MIPI Packed) : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       : Unsupported : 14-bit Greyscale (MIPI Packed) : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Raw       :    gray16le :     16-bit Greyscale : {16-16384, 2}x{16-16384, 1}
[video4linux2,v4l2 @ 0x55561cd9da20] Compressed: Unsupported : PiSP Bayer Compressed Format : {16-16384, 2}x{16-16384, 1}
/dev/video0: Immediate exit requested


    


    Not sure why so many of these are unsupported, I saw a video on YouTube with the same camera and older Pi and he did not have so many unsupported.

    


    Also, I ran the config file in the ffmpeg directory and I think it generated some additional files (wasn't working before either) are these normal ? (ffmpeg $ ls)

    


    Changelog        COPYING.LGPLv2.1  INSTALL.md   libpostproc    presets
compat           COPYING.LGPLv3    libavcodec   libswresample  README.md
configure        CREDITS           libavdevice  libswscale     RELEASE
CONTRIBUTING.md  doc               libavfilter  LICENSE.md     tests
COPYING.GPLv2    ffbuild           libavformat  MAINTAINERS    tools
COPYING.GPLv3    fftools           libavutil    Makefile


    


    A side question : How do I enable and disable libraries ? I tried entering —enable-pulse for example (with and without spaces and prefixed by ffmpeg) but get an error along the lines of unrecognised option or command not found. (I've tried google but as mentioned prior, I'm a bit lost)

    


    Thanks in advance.

    


  • Revision 6245a91e0b : Skip golden ref frame check when it is same as last ref frame When golden refer

    9 mars 2015, par Jingning Han

    Changed Paths :
     Modify /vp9/encoder/vp9_pickmode.c



    Skip golden ref frame check when it is same as last ref frame

    When golden reference frame is refreshed, the next frame has both
    its last and golden reference frames point to the same reference
    frame in real-time coding mode. Experiments suggest that using
    two separate reference frames for frames right after golden refresh
    frame does not provide further compression performance advantage.
    This commit hence retains the current encoder implementation and
    shuts off the mode search over golden reference frame in this case.

    It makes the encoder run slightly faster at no coding performance
    change.

    Change-Id : I1561f7799253a10e675d05c63c1749fe9e85b472