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  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

  • Qu’est ce qu’un éditorial

    21 juin 2013, par

    Ecrivez votre de point de vue dans un article. Celui-ci sera rangé dans une rubrique prévue à cet effet.
    Un éditorial est un article de type texte uniquement. Il a pour objectif de ranger les points de vue dans une rubrique dédiée. Un seul éditorial est placé à la une en page d’accueil. Pour consulter les précédents, consultez la rubrique dédiée.
    Vous pouvez personnaliser le formulaire de création d’un éditorial.
    Formulaire de création d’un éditorial Dans le cas d’un document de type éditorial, les (...)

Sur d’autres sites (4352)

  • Merge commit '1202b712690c14f0efb06e4ad8b06c5b3df6822a'

    11 mai 2017, par James Almer
    Merge commit '1202b712690c14f0efb06e4ad8b06c5b3df6822a'
    

    * commit '1202b712690c14f0efb06e4ad8b06c5b3df6822a' :
    theora : export cropping information instead of handling it internally
    h264dec : export cropping information instead of handling it internally
    h264dec : be more explicit in handling container cropping
    hevcdec : export cropping information instead of handling it internally

    This commit is a noop.

    This changes the cropping behavior, when it's supposedly only meant to move
    it outside of the decoder.
    See https://ffmpeg.org/pipermail/ffmpeg-devel/2017-May/211239.html for the
    discussion about it.

    Merged-by : James Almer <jamrial@gmail.com>

  • 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 ?

  • Merge commit 'bd6496fa07e32fd09ceb79404f9af43df959bcb2'

    5 mai 2017, par Clément Bœsch
    Merge commit 'bd6496fa07e32fd09ceb79404f9af43df959bcb2'
    

    * commit 'bd6496fa07e32fd09ceb79404f9af43df959bcb2' :
    interplayvideo : Convert to the new bitstream reader
    adx : Convert to the new bitstream reader
    dvbsubdec : Convert to the new bitstream reader
    motionpixels : Convert to the new bitstream reader

    This merge is a noop, see
    http://ffmpeg.org/pipermail/ffmpeg-devel/2017-April/209609.html

    Merged-by : Clément Bœsch <u@pkh.me>