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Mot : - Tags -/remix

Autres articles (92)

  • 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 (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

Sur d’autres sites (13576)

  • tag refuses to play mp4 video

    5 janvier 2015, par MightyPork

    I have a video I want to embed using the html5 video tag :

    I’ve converted it using ffmpeg :

    ffmpeg -i P6135199.MOV -vcodec libx264 -acodec aac helios.mp4

    FFMPEG output :

    [libx264 @ 0x22ac340] using cpu capabilities : MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x22ac340] profile High 4:2:2, level 1.2, 4:2:2 8-bit
[libx264 @ 0x22ac340] 264 - core 142 r2455 021c0dc - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options : cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to ’helios.mp4’ :
  Metadata :
    comment-eng : OLYMPUS DIGITAL CAMERA                           
    comment : OLYMPUS DIGITAL CAMERA                           
    encoder : Lavf56.15.102
    Stream #0:0(eng) : Video : h264 (libx264) ([33][0][0][0] / 0x0021), yuvj422p(pc), 320x240, q=-1—1, 15 fps, 15360 tbn, 15 tbc (default)
    Metadata :
      creation_time : 2008-06-13 10:47:16
      encoder : Lavc56.13.100 libx264
Stream mapping :
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
Press [q] to stop, [?] for help
frame=  240 fps=124 q=-1.0 Lsize=     906kB time=00:00:15.86 bitrate= 467.7kbits/s    
video:902kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : 0.409100%
[libx264 @ 0x22ac340] frame I:1     Avg QP:23.71  size :  7960
[libx264 @ 0x22ac340] frame P:123   Avg QP:23.85  size :  5255
[libx264 @ 0x22ac340] frame B:116   Avg QP:25.41  size :  2317
[libx264 @ 0x22ac340] consecutive B-frames :  3.3% 96.7%  0.0%  0.0%
[libx264 @ 0x22ac340] mb I  I16..4 : 15.7% 69.0% 15.3%
[libx264 @ 0x22ac340] mb P  I16..4 :  2.2% 13.4%  0.8%  P16..4 : 43.8% 23.1% 14.0%  0.0%  0.0%    skip : 2.8%
[libx264 @ 0x22ac340] mb B  I16..4 :  0.3%  1.3%  0.1%  B16..8 : 42.4%  9.9%  3.0%  direct:12.2%  skip:30.9%  L0:37.2% L1:38.2% BI:24.5%
[libx264 @ 0x22ac340] 8x8 transform intra:80.8% inter:71.9%
[libx264 @ 0x22ac340] coded y,uvDC,uvAC intra : 76.7% 96.8% 49.7% inter : 37.8% 60.9% 5.1%
[libx264 @ 0x22ac340] i16 v,h,dc,p : 39%  4%  8% 49%
[libx264 @ 0x22ac340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu : 15% 14% 39%  6%  3%  4%  3%  6% 12%
[libx264 @ 0x22ac340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu : 25% 11% 18%  8%  7%  7%  8%  8%  8%
[libx264 @ 0x22ac340] i8c dc,h,v,p : 63%  7% 20% 10%
[libx264 @ 0x22ac340] Weighted P-Frames : Y:5.7% UV:0.8%
[libx264 @ 0x22ac340] ref P L0 : 51.4% 18.3% 20.6%  9.3%  0.4%
[libx264 @ 0x22ac340] ref B L0 : 80.8% 19.2%
[libx264 @ 0x22ac340] kb/s:461.52

    And I try to embed it as follows :

    <video src="helios.mp4" controls="controls">Get a better browser!</video>

    However, Chrome doesn’t play the video, only offers to download it (same as it did before I converted the video). Firefox has the same problem.

    I’ve tested and other mp4 files (from my phone) play just fine.

    What’s the problem ? Did I convert it wrong ?

  • Convert video with ffmpeg to have the same quality

    14 mai 2019, par zlon

    I want to make some present for my grandma. And prepare some video. Unfortunately here video player is old and could not read some file formats. She is not at home now, so I don’t know which player she has. But I have a file which is OK for here system :

    File which is in a correct format :

    General
    
Complete name                            : let.avi
    
Format                                   : AVI
    
Format/Info                              : Audio Video Interleave
    
File size                                : 688 MiB
    
Duration                                 : 1 h 35 min
    
Overall bit rate                         : 1 002 kb/s
    
Writing application                      : VirtualDubMod 1.4.13
    
Writing library                          : VirtualDub build 14328/release
    
FileExtension_Invalid                    : avi
    

    
Video
    
ID                                       : 0
    
Format                                   : MPEG-4 Visual
    
Format profile                           : Simple@L3
    
Format settings, BVOP                    : No
    
Format settings, QPel                    : No
    
Format settings, GMC                     : No warppoints
    
Format settings, Matrix                  : Default (H.263)
    
Codec ID                                 : XVID
    
Codec ID/Hint                            : XviD
    
Duration                                 : 1 h 35 min
    
Bit rate                                 : 800 kb/s
    
Width                                    : 544 pixels
    
Height                                   : 416 pixels
    
Display aspect ratio                     : 4:3
    
Frame rate                               : 25.000 FPS
    
Color space                              : YUV
    
Chroma subsampling                       : 4:2:0
    
Bit depth                                : 8 bits
    
Scan type                                : Progressive
    
Compression mode                         : Lossy
    
Bits/(Pixel*Frame)                       : 0.141
    
Stream size                              : 549 MiB (80%)
    
Writing library                          : XviD 0.0.09 (UTC 2003-03-25)

    I have the following file, which here system could not read :

    File in the incorrect format :

    General
    
Complete name                            : amf.avi
    
Format                                   : AVI
    
Format/Info                              : Audio Video Interleave
    
Overall bit rate                         : 2 167 kb/s
    

    
Video
    
ID                                       : 0
    
Format                                   : MPEG-4 Visual
    
Format profile                           : Advanced Simple@L5
    
Format settings                          : BVOP1
    
Format settings, BVOP                    : 1
    
Format settings, QPel                    : No
    
Format settings, GMC                     : No warppoints
    
Format settings, Matrix                  : Default (MPEG)
    
Codec ID                                 : DX50
    
Codec ID/Hint                            : DivX 5
    
Bit rate                                 : 1 710 kb/s
    
Width                                    : 720 pixels
    
Height                                   : 528 pixels
    
Display aspect ratio                     : 4:3
    
Frame rate                               : 23.976 (24000/1001) FPS
    
Color space                              : YUV
    
Chroma subsampling                       : 4:2:0
    
Bit depth                                : 8 bits
    
Scan type                                : Progressive
    
Compression mode                         : Lossy
    
Bits/(Pixel*Frame)                       : 0.188
    
Stream size                              : 1.15 GiB (79%)
    
Writing library                          : XviD 64

    Could you help me to convert the second file to a format of the first ? (It would be nice if the output would be of the similar quality)

    I have Ubuntu, and I think ffmpeg should be able to do it.

    CROSS POSTED FROM : SE Video production.

  • Why VLC not display RTP stream

    5 janvier 2018, par Alexandr Lukovnikov

    I am new in RTP. I whant to start RTSP server on embeded device. Now I can whatching video file, that stored in flash memory. But when I start translate video, that encoded whith x264, VLC not display anything.
    Just buffering, nothing else

    core debug: `rtsp://172.16.50.194:1935/live1.sdp' successfully opened
    
core debug: Buffering 0%
    
packetizer_h264 debug: found NAL_SPS (sps_id=0)
    
core debug: Stream buffering done (11 ms in 133 ms)
    
core debug: Decoder wait done in 0 ms
    
packetizer_h264 debug: found NAL_PPS (pps_id=0 sps_id=0)
    
core error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 30 ms)
    
core error: ES_OUT_RESET_PCR called
    
core debug: Buffering 0%
    
core debug: Buffering 0%
    
core debug: Buffering 0%
    
core debug: Stream buffering done (111 ms in 706 ms)
    
core debug: Decoder wait done in 0 ms
    
core error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 594 ms)
    
core error: ES_OUT_RESET_PCR called
    
core debug: Buffering 0%
    
...
    
core debug: Buffering 0%
    
live555 warning: no data received in 10s, eof ?
    
core debug: EOF reached

    That is Wireshark dump

    SPS slice

    1111 0100 = Profile_idc: Unknown (244)
    
0... .... = Constraint_set0_flag: 0
    
.0.. .... = Constraint_set1_flag: 0
    
..0. .... = Constraint_set2_flag: 0
    
...0 .... = Constraint_set3_flag: 0
    
.... 0... = Constraint_set4_flag: 0
    
.... .0.. = Constraint_set5_flag: 0
    
.... ..00 = Reserved_zero_2bits: 0
    
0000 1101 = Level_id: 13 [Level 1.3 768 kb/s]
    
1... .... = seq_parameter_set_id: 0
    
.001 00.. = log2_max_frame_num_minus4: 3
    
.... ..01  1... .... = pic_order_cnt_type: 2
    
.001 01.. = num_ref_frames: 4
    
.... ..1. = gaps_in_frame_num_value_allowed_flag: 1
    
.... ...0  10.. .... = pic_width_in_mbs_minus1: 1
    
..00 0001  0100 0... = pic_height_in_map_units_minus1: 39
    
.... .0.. = frame_mbs_only_flag: 0
    
.... ..0. = mb_adaptive_frame_field_flag: 0
    
.... ...1 = direct_8x8_inference_flag: 1
    
1... .... = frame_cropping_flag: 1
    
.1.. .... = frame_crop_left_offset: 0
    
..1. .... = frame_crop_left_offset: 0
    
...1 .... = frame_crop_top_offset: 0
    
.... 1... = frame_crop_bottom_offset: 0
    
.... .0.. = vui_parameters_present_flag: 0
    
.... ..1. = rbsp_stop_bit: 1
    
.... ...0 = rbsp_trailing_bits: 0

    PPS slice

     1... .... = pic_parameter_set_id: 0
    
    .1.. .... = seq_parameter_set_id: 0
    
    ..0. .... = entropy_coding_mode_flag: 0
    
    ...0 .... = pic_order_present_flag: 0
    
    .... 1... = num_slice_groups_minus1: 0
    
    .... .1.. = num_ref_idx_l0_active_minus1: 0
    
    .... ..1. = num_ref_idx_l1_active_minus1: 0
    
    .... ...0 = weighted_pred_flag: 0
    
    00.. .... = weighted_bipred_idc: 0
    
    ..00 0010  110. .... = pic_init_qp_minus26(se(v)): 11
    
    ...1 .... = pic_init_qs_minus26: 0
    
    .... 1... = chroma_qp_index_offset: 0
    
    .... .1.. = deblocking_filter_control_present_flag: 1
    
    .... ..0. = constrained_intra_pred_flag: 0
    
    .... ...0 = redundant_pic_cnt_present_flag: 0
    
    1... .... = rbsp_stop_bit: 1
    
    .000 0000 = rbsp_trailing_bits: 0

    And SEI

    x264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=10 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00

    What could be my mistake ?

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