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  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

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  • x264 parameters configuration

    5 novembre 2013, par user1558688

    I need to configure x264 to reproduce the below parameters.

    The configuration was extracted using Elecard Stream Analyzer from the first keyframe received from a legacy SIP phone h264 encoder. It is mission critical to reproduce it in software to keep compatibility with other sip clients.

    All the information I have are the parameters below.

    Is it possible at least to get close to the original ?

    Thanks a lot.

    0x00000000 H264 Sequence Parameter Set  
    
    profile_idc = 66 (PROFILE_IDC_Baseline)  
    
    constraint_set0_flag = 1  
    
    constraint_set1_flag = 0  
    
    constraint_set2_flag = 0  
    
    constraint_set3_flag = 0  
    
    constraint_set4_flag = 0  
    
    constraint_set5_flag = 0  
    
    reserved_zero_2bits = 0  
    
    level_idc = 12  
    
    seq_parameter_set_id = 4  
    
    log2_max_frame_num_minus4 = 4  
    
    pic_order_cnt_type = 2  
    
    num_ref_frames = 1  
    
    gaps_in_frame_num_value_allowed_flag = 0  
    
    pic_width_in_mbs_minus1 = 19 (320)  
    
    pic_height_in_map_units_minus1 = 14 (240)  
    
    frame_mbs_only_flag = 1  
    
    direct_8x8_inference_flag = 1  
    
    frame_cropping_flag = 0  
    
    vui_parameters_present_flag = 0  
    

    
0x0000000C H264 Picture Parameter Set  
    
    pic_parameter_set_id = 4  
    
    seq_parameter_set_id = 4  
    
    entropy_coding_mode_flag = 0  
    
    pic_order_present_flag = 0  
    
    num_slice_groups_minus1 = 0  
    
    num_ref_idx_L0_active_minus1 = 0  
    
    num_ref_idx_L1_active_minus1 = 0  
    
    weighted_pred_flag = 0  
    
    weighted_bipred_idc = 0  
    
    pic_init_qp_minus26 = 2  
    
    pic_init_qs_minus26 = 0  
    
    chroma_qp_index_offset = 0  
    
    deblocking_filter_control_present_flag = 1  
    
    constrained_intra_pred_flag = 0  
    
    redundant_pic_cnt_present_flag = 0  
    

    
0x00000014 H264 I slice #1 { frame_num = 0 }  
    
    first_mb_in_slice = 0  
    
    slice_type = 2  
    
    pic_parameter_set_id = 4  
    
    frame_num = 0  
    
    idr_pic_id = 4  
    
    dec_ref_pic_marking():  
    
    if(IdrPicFlag)  
    
        no_output_of_prior_pics_flag = 0  
    
        long_term_reference_flag = 0  
    
slice_qp_delta = 0  
    
disable_deblocking_filter_idc = 0  
    
    slice_alpha_c0_offset_div2 = 0  
    
    slice_beta_offset_div2 = 0  
    

    
0x00000591 H264 I slice #1 { frame_num = 0 }  
    
    first_mb_in_slice = 126  
    
    slice_type = 2  
    
    pic_parameter_set_id = 4  
    
    frame_num = 0  
    
    idr_pic_id = 4  
    
    dec_ref_pic_marking():  
    
        if(IdrPicFlag)  
    
            no_output_of_prior_pics_flag = 0  
    
            long_term_reference_flag = 0  
    
    slice_qp_delta = 0  
    
    disable_deblocking_filter_idc = 0  
    
    slice_alpha_c0_offset_div2 = 0  
    
    slice_beta_offset_div2 = 0  
    

    
0x00000B34 H264 I slice #1 { frame_num = 0 }  
    
    first_mb_in_slice = 201  
    
    slice_type = 2  
    
    pic_parameter_set_id = 4  
    
    frame_num = 0  
    
    idr_pic_id = 4  
    
    dec_ref_pic_marking():  
    
        if(IdrPicFlag)  
    
            no_output_of_prior_pics_flag = 0  
    
            long_term_reference_flag = 0  
    
    slice_qp_delta = 0  
    
    disable_deblocking_filter_idc = 0  
    
    slice_alpha_c0_offset_div2 = 0  
    
    slice_beta_offset_div2 = 0  

  • x264 parameters configuration

    5 novembre 2013, par user1558688

    I need to configure x264 to reproduce the below parameters.

    The configuration was extracted using Elecard Stream Analyzer from the first keyframe received from a legacy SIP phone h264 encoder. It is mission critical to reproduce it in software to keep compatibility with other sip clients.

    All the information I have are the parameters below.

    Is it possible at least to get close to the original ?

    Thanks a lot.

    0x00000000 H264 Sequence Parameter Set  
    
    profile_idc = 66 (PROFILE_IDC_Baseline)  
    
    constraint_set0_flag = 1  
    
    constraint_set1_flag = 0  
    
    constraint_set2_flag = 0  
    
    constraint_set3_flag = 0  
    
    constraint_set4_flag = 0  
    
    constraint_set5_flag = 0  
    
    reserved_zero_2bits = 0  
    
    level_idc = 12  
    
    seq_parameter_set_id = 4  
    
    log2_max_frame_num_minus4 = 4  
    
    pic_order_cnt_type = 2  
    
    num_ref_frames = 1  
    
    gaps_in_frame_num_value_allowed_flag = 0  
    
    pic_width_in_mbs_minus1 = 19 (320)  
    
    pic_height_in_map_units_minus1 = 14 (240)  
    
    frame_mbs_only_flag = 1  
    
    direct_8x8_inference_flag = 1  
    
    frame_cropping_flag = 0  
    
    vui_parameters_present_flag = 0  
    

    
0x0000000C H264 Picture Parameter Set  
    
    pic_parameter_set_id = 4  
    
    seq_parameter_set_id = 4  
    
    entropy_coding_mode_flag = 0  
    
    pic_order_present_flag = 0  
    
    num_slice_groups_minus1 = 0  
    
    num_ref_idx_L0_active_minus1 = 0  
    
    num_ref_idx_L1_active_minus1 = 0  
    
    weighted_pred_flag = 0  
    
    weighted_bipred_idc = 0  
    
    pic_init_qp_minus26 = 2  
    
    pic_init_qs_minus26 = 0  
    
    chroma_qp_index_offset = 0  
    
    deblocking_filter_control_present_flag = 1  
    
    constrained_intra_pred_flag = 0  
    
    redundant_pic_cnt_present_flag = 0  
    

    
0x00000014 H264 I slice #1 { frame_num = 0 }  
    
    first_mb_in_slice = 0  
    
    slice_type = 2  
    
    pic_parameter_set_id = 4  
    
    frame_num = 0  
    
    idr_pic_id = 4  
    
    dec_ref_pic_marking():  
    
    if(IdrPicFlag)  
    
        no_output_of_prior_pics_flag = 0  
    
        long_term_reference_flag = 0  
    
slice_qp_delta = 0  
    
disable_deblocking_filter_idc = 0  
    
    slice_alpha_c0_offset_div2 = 0  
    
    slice_beta_offset_div2 = 0  
    

    
0x00000591 H264 I slice #1 { frame_num = 0 }  
    
    first_mb_in_slice = 126  
    
    slice_type = 2  
    
    pic_parameter_set_id = 4  
    
    frame_num = 0  
    
    idr_pic_id = 4  
    
    dec_ref_pic_marking():  
    
        if(IdrPicFlag)  
    
            no_output_of_prior_pics_flag = 0  
    
            long_term_reference_flag = 0  
    
    slice_qp_delta = 0  
    
    disable_deblocking_filter_idc = 0  
    
    slice_alpha_c0_offset_div2 = 0  
    
    slice_beta_offset_div2 = 0  
    

    
0x00000B34 H264 I slice #1 { frame_num = 0 }  
    
    first_mb_in_slice = 201  
    
    slice_type = 2  
    
    pic_parameter_set_id = 4  
    
    frame_num = 0  
    
    idr_pic_id = 4  
    
    dec_ref_pic_marking():  
    
        if(IdrPicFlag)  
    
            no_output_of_prior_pics_flag = 0  
    
            long_term_reference_flag = 0  
    
    slice_qp_delta = 0  
    
    disable_deblocking_filter_idc = 0  
    
    slice_alpha_c0_offset_div2 = 0  
    
    slice_beta_offset_div2 = 0  

  • Stuck in deadend while compiling ffmpeg with nvidia CUDA support on Ubuntu 18.04 and GeForce GT 730

    24 février 2019, par Marko

    I want to compile ffmpeg with CUDA support, on Ubuntu 18.04, and my graphics card is GeForce GT 730 (so far I have not CUDA programming experience).
    Here nvidia claims that it has at least some transcoding support.

    I have cloned https://git.ffmpeg.org/ffmpeg.git and as I understand I also need to build and install nv-codec-headers.

    But there in the README, they say that minimum driver version for Linux is 418.30 or newer. So I went to nvidia site to download driver and after selecting my card I got this download link. So the driver version is high enough it seems. But when I try to install it I get message that this device will be ignored by that driver and that it is supported by legacy driver 390.xx (which is version I can install with apt).
    Is something wrong with nVidia, why are they offering me driver that is cannot be used for this device ?

    I’ve installed 390.xx driver using ubuntu-drivers autoinstall and built ffmpeg, but when I try to run it I get this error : Cannot load cuvidGetDecodeStatus [h264_cuvid @ 0x562a86dbc680] Failed loading nvcuvid.

    I suppose it is because of driver ?

    So, what can I do to unstuck myself ?

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