Recherche avancée

Médias (3)

Mot : - Tags -/image

Autres articles (48)

  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (11547)

  • how to call avconv via shell_ exec in php ?

    8 janvier 2018, par Blurry Script

    when I call a command to convert video from console linux its all working, but when I call the same command from shell_exec in php, it gives no errors it returns nothing.

    even tough I added sudo 2>&1 to redirect the output, for example this command :

    $res = shell_exec("avconv -i film.mkv 2>&1");
    echo $res //nothing
    exit;
  • avfilter/vf_bwdif : Add a filter_line3 method for optimisation

    4 juillet 2023, par John Cox
    avfilter/vf_bwdif : Add a filter_line3 method for optimisation
    

    Add an optional filter_line3 to the available optimisations.

    filter_line3 is equivalent to filter_line, memcpy, filter_line

    filter_line shares quite a number of loads and some calculations in
    common with its next iteration and testing shows that using aarch64
    neon filter_line3s performance is 30% better than two filter_lines
    and a memcpy.

    Adds a test for vf_bwdif filter_line3 to checkasm

    Rounds job start lines down to a multiple of 4. This means that if
    filter_line3 exists then filter_line will not sometimes be called
    once at the end of a slice depending on thread count. The final slice
    may do up to 3 extra lines but filter_edge is faster than filter_line
    so it is unlikely to create any noticable thread load variation.

    Signed-off-by : John Cox <jc@kynesim.co.uk>
    Signed-off-by : Martin Storsjö <martin@martin.st>

    • [DH] libavfilter/bwdif.h
    • [DH] libavfilter/vf_bwdif.c
    • [DH] tests/checkasm/vf_bwdif.c
  • FFmpeg retrieve a specific program from TS file

    8 mai 2017, par chang jc

    I tried to retrieve a specific program from a TS file.
    Said :

    Input #0, mpegts, from 'DVB_T_good.ts':
     Duration: 00:00:48.04, start: 55045.888000, bitrate: 14521 kb/s
     Program 300
       Metadata:
         service_name    : ?l?��}�TS�
         service_provider: ?l?��
       Stream #0:0[0xbb9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
       Stream #0:1[0xbba]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
       Stream #0:2[0xbbb]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
     Program 301
       Metadata:
         service_name    : ?l?��N��?S�
         service_provider: ?l?��
       Stream #0:3[0xbc3]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
       Stream #0:9[0xbc4]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
       Stream #0:10[0xbc5]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
     Program 302
       Metadata:
         service_name    : ?l?��e��^S�
         service_provider: ?l?��
       Stream #0:5[0xbcd]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
       Stream #0:6[0xbce]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
     Program 304
       Metadata:
         service_name    : ?l?��S�pcS�
         service_provider: ?l?��
       Stream #0:4[0xbe1]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
       Stream #0:7[0xbe2]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp
       Stream #0:8[0xbe3]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp

    Then I tried to retrieve a specific program as :

    ffmpeg -i INPUT -map 0:p:1344 OUTPUT

    It succeeds greatly but the only thing I noticed is :

    it seems to apply transcode (decode & encode again) to the output implicitely ?

    ffmpeg version N-85693-g8de3458 Copyright (c) 2000-2017 the FFmpeg developers
     built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
     configuration: --prefix=/home/john/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/john/ffmpeg_build/include --extra-ldflags=-L/home/john/ffmpeg_build/lib --bindir=/home/john/bin --enable-gpl --enable-libfreetype --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --disable-ffplay --disable-ffserver --disable-doc --disable-libopus
     libavutil      55. 61.100 / 55. 61.100
     libavcodec     57. 93.100 / 57. 93.100
     libavformat    57. 72.101 / 57. 72.101
     libavdevice    57.  7.100 / 57.  7.100
     libavfilter     6. 87.100 /  6. 87.100
     libswscale      4.  7.101 /  4.  7.101
     libswresample   2.  8.100 /  2.  8.100
     libpostproc    54.  6.100 / 54.  6.100
    [NULL @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [NULL @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
       Last message repeated 1 times
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
       Last message repeated 1 times
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
       Last message repeated 1 times
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
       Last message repeated 1 times
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
       Last message repeated 1 times
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
       Last message repeated 1 times
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    [h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    [h264 @ 0x33eb3a0] decode_slice_header error
    [h264 @ 0x33eb3a0] no frame!
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
       Last message repeated 1 times
    [mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
       Last message repeated 2 times
    [mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    [mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    [mpegts @ 0x33af360] PES packet size mismatch
       Last message repeated 9 times
    Input #0, mpegts, from 'DVB_T_good.ts':
     Duration: 00:00:48.04, start: 55045.888000, bitrate: 14521 kb/s
     Program 300
       Metadata:
         service_name    : ?l?��}�TS�
         service_provider: ?l?��
       Stream #0:0[0xbb9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
       Stream #0:1[0xbba]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
       Stream #0:2[0xbbb]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
     Program 301
       Metadata:
         service_name    : ?l?��N��?S�
         service_provider: ?l?��
       Stream #0:3[0xbc3]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
       Stream #0:9[0xbc4]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
       Stream #0:10[0xbc5]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
     Program 302
       Metadata:
         service_name    : ?l?��e��^S�
         service_provider: ?l?��
       Stream #0:5[0xbcd]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
       Stream #0:6[0xbce]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
     Program 304
       Metadata:
         service_name    : ?l?��S�pcS�
         service_provider: ?l?��
       Stream #0:4[0xbe1]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
       Stream #0:7[0xbe2]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp
       Stream #0:8[0xbe3]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp
    map 0:p:304
    File '304_1800.ts' already exists. Overwrite ? [y/N] y
    Stream mapping:
     Stream #0:4 -> #0:0 (h264 (native) -> mpeg2video (native))
     Stream #0:7 -> #0:1 (aac_latm (native) -> mp2 (native))
     Stream #0:8 -> #0:2 (aac_latm (native) -> mp2 (native))
    Press [q] to stop, [?] for help
    [h264 @ 0x33d6d20] mmco: unref short failure
       Last message repeated 1 times
    [h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    [h264 @ 0x33d6d20] reference picture missing during reorder
    [h264 @ 0x33d6d20] Missing reference picture, default is 65784
    [h264 @ 0x33d6d20] reference picture missing during reorder
    [h264 @ 0x33d6d20] Missing reference picture, default is 65785
    Output #0, mpegts, to '304_1800.ts':
     Metadata:
       encoder         : Lavf57.72.101
       Stream #0:0: Video: mpeg2video (Main), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
       Metadata:
         encoder         : Lavc57.93.100 mpeg2video
       Side data:
         cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
       Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
       Metadata:
         encoder         : Lavc57.93.100 mp2
       Stream #0:2: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
       Metadata:
         encoder         : Lavc57.93.100 mp2
    [h264 @ 0x33d6d20] mmco: unref short failureime=00:00:44.34 bitrate=3506.2kbits/s speed=1.43x    
       Last message repeated 1 times
    [h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    [mpegts @ 0x33af360] PES packet size mismatch
    [aac_latm @ 0x3587360] Number of bands (59) exceeds limit (45).
    Error while decoding stream #0:7: Invalid data found when processing input
       Last message repeated 1 times
    [h264 @ 0x33d6d20] mmco: unref short failure
       Last message repeated 1 times
    [h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    [h264 @ 0x33d6d20] mmco: unref short failureime=00:00:45.05 bitrate=3491.2kbits/s speed=1.43x    
       Last message repeated 1 times
    [h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    [h264 @ 0x33d6d20] mmco: unref short failure
       Last message repeated 1 times
    [h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    [mpegts @ 0x33af360] PES packet size mismatchme=00:00:47.74 bitrate=3470.1kbits/s speed=1.43x    
       Last message repeated 1 times
    [h264 @ 0x33d6d20] error while decoding MB 97 35, bytestream -12
    Error while decoding stream #0:7: Invalid data found when processing input
    Error while decoding stream #0:8: Invalid data found when processing input
    frame= 1404 fps= 42 q=31.0 Lsize=   20396kB time=00:00:47.88 bitrate=3489.5kbits/s speed=1.42x    
    video:14144kB audio:4429kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 9.813825%

    You could notice by following message :

    **

    Output #0, mpegts, to '304_1800.ts':
     Metadata:
       encoder         : Lavf57.72.101
       Stream #0:0: Video: mpeg2video (Main), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
       Metadata:
         encoder         : Lavc57.93.100 mpeg2video
       Side data:
         cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
       Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
       Metadata:
         encoder         : Lavc57.93.100 mp2
       Stream #0:2: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
       Metadata:
         encoder         : Lavc57.93.100 mp2

    **

    If so, could I avoid the transcoding by command ? Or it is a necessary ?
    It it is a need, WHY ?