Recherche avancée

Médias (0)

Mot : - Tags -/navigation

Aucun média correspondant à vos critères n’est disponible sur le site.

Autres articles (74)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • 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 (...)

Sur d’autres sites (12833)

  • ffmpeg produces "is_avc" = false with h264_nvenc & tee muxer

    14 août 2018, par Areeb111

    I am using ffmpeg for encoding MKV (Matroska Video files) to 2x MP4 (H264 - 720p Main@L4) & (H264 - 360p Baseline@L3.1).

    Having really strange problem when using -c:v h264_nvenc and tee muxer then the produced output file is having is_avc=false even i have checked the same input matroska file with another server running with Intel QuickSync -c:v h264_qsv with the same command then the produced output file is is_avc=true.

    The main goal that i want the is_avc=true is because the files must be played using nginx-vod-module which requires the AVC video format to be streamed.

    Steps to reproduce the problem :

    • Custom ffmpeg build with NVENC support ffmpeg version N-91182-gbdf1bbd Copyright (c) 2000-2018 the FFmpeg developers   built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-28)
    • ffprobe version 4.0.2-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2007-2018 the FFmpeg developers
    • Running ffmpeg command line with NVENC and tee muxer 
      /root/ffmpeg  -y -t 00:00:50 -i "testinput.mkv" -filter_complex "[0:v]split=2[s0][s1];[s0]scale=-2:720[v0];[s1]scale=-2:360[v1]" -map "[v0]" -map "[v1]" -map 0:a -c:v h264_nvenc -b:v:0 1100k -b:v:1 600k -profile:v:0 main -profile:v:1 baseline -level:v:0 4 -level:v:1 3.1 -ac 2 -c:a aac -b:a 128k -af "aresample=async=1000:first_pts=0"  -f tee "[select=\'v:0,a\']testoutput.mp4|[select=\'v:1,a\']testoutput-360.mp4"
    • Running ffprobe for the output file to check "is_avc" : 
      ./ffprobe -v quiet -print_format json -show_format -show_streams testoutput.mp4

    • My current ffprobe output results are :

      ./ffprobe -v quiet -print_format json -show_format -show_streams testoutput.mp4
      
 {
      
    "streams": [
      
        {
      
            "index": 0,
      
            "codec_name": "h264",
      
            "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
      
            "profile": "Main",
      
            "codec_type": "video",
      
            "codec_time_base": "1001/48000",
      
            "codec_tag_string": "avc1",
      
            "codec_tag": "0x31637661",
      
            "width": 1280,
      
            "height": 720,
      
            "coded_width": 1280,
      
            "coded_height": 720,
      
            "has_b_frames": 0,
      
            "sample_aspect_ratio": "1:1",
      
            "display_aspect_ratio": "16:9",
      
            "pix_fmt": "yuv420p",
      
            "level": 40,
      
            "chroma_location": "left",
      
            "refs": 1,
      
            "is_avc": "false",
      
            "nal_length_size": "0",
      
            "r_frame_rate": "24000/1001",
      
            "avg_frame_rate": "24000/1001",
      
            "time_base": "1/24000",
      
            "start_pts": 984,
      
            "start_time": "0.041000",
      
            "duration_ts": 1201200,
      
            "duration": "50.050000",
      
            "bit_rate": "845035",
      
            "bits_per_raw_sample": "8",
      
            "nb_frames": "1199",
      
            "disposition": {
      
                "default": 1,
      
                "dub": 0,
      
                "original": 0,
      
                "comment": 0,
      
                "lyrics": 0,
      
                "karaoke": 0,
      
                "forced": 0,
      
                "hearing_impaired": 0,
      
                "visual_impaired": 0,
      
                "clean_effects": 0,
      
                "attached_pic": 0,
      
                "timed_thumbnails": 0
      
            },
      
            "tags": {
      
                "language": "und",
      
                "handler_name": "VideoHandler"
      
            }
      
        },
      
        {
      
            "index": 1,
      
            "codec_name": "aac",
      
            "codec_long_name": "AAC (Advanced Audio Coding)",
      
            "profile": "LC",
      
            "codec_type": "audio",
      
            "codec_time_base": "1/48000",
      
            "codec_tag_string": "mp4a",
      
            "codec_tag": "0x6134706d",
      
            "sample_fmt": "fltp",
      
            "sample_rate": "48000",
      
            "channels": 2,
      
            "channel_layout": "stereo",
      
            "bits_per_sample": 0,
      
            "r_frame_rate": "0/0",
      
            "avg_frame_rate": "0/0",
      
            "time_base": "1/48000",
      
            "start_pts": 0,
      
            "start_time": "0.000000",
      
            "duration_ts": 2401488,
      
            "duration": "50.031000",
      
            "bit_rate": "129153",
      
            "max_bit_rate": "129153",
      
            "nb_frames": "2346",
      
            "disposition": {
      
                "default": 1,
      
                "dub": 0,
      
                "original": 0,
      
                "comment": 0,
      
                "lyrics": 0,
      
                "karaoke": 0,
      
                "forced": 0,
      
                "hearing_impaired": 0,
      
                "visual_impaired": 0,
      
                "clean_effects": 0,
      
                "attached_pic": 0,
      
                "timed_thumbnails": 0
      
            },
      
            "tags": {
      
                "language": "ger",
      
                "handler_name": "SoundHandler"
      
            }
      
        }
      
    ],
      
    "format": {
      
        "filename": "Leonmusssterben20171080p.mp4",
      
        "nb_streams": 2,
      
        "nb_programs": 0,
      
        "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
      
        "format_long_name": "QuickTime / MOV",
      
        "start_time": "0.000000",
      
        "duration": "50.031000",
      
        "size": "6116472",
      
        "bit_rate": "978029",
      
        "probe_score": 100,
      
        "tags": {
      
            "major_brand": "isom",
      
            "minor_version": "512",
      
            "compatible_brands": "isomiso2avc1mp41",
      
            "encoder": "Lavf58.17.100"
      
        }
      
    }
      
}

    Please anyone can help me why is the output video file is getting "is_avc=false" ?

    Is there any option to force it ?

    Thank you

  • "Error configuring filters" FFmpeg issue while using Vogon

    8 juillet 2018, par Jk425

    Prerequisites :

    vogon, python 2.7, ffmpeg 2.3.6(newer versions caused + one more error :
    "Error configuring complex filters" due to vogon outdate itself, i
    suppose)

     sample_project/
    
    ├── adwords_video_csv.py
    
    ├── adwords_video_csv.pyc
    
    ├── assets
    
    │   ├── car_ad.mp4
    
    │   ├── README.txt
    
    │   └── vogon.png
    
    ├── edit_config.py
    
    ├── output
    
    │   └── README.txt
    
    ├── sample.csv
    
    ├── sample.json
    
    ├── sample_win.json
    
    ├── vogon.py
    
    ├── vogon.pyc
    
    ├── yt_upload.py
    
    └── yt_upload.pyc

    Getting such a message after executing command :

    python vogon.py sample.json --noauth_local_webserver
    Input #1, image2, from 'assets/vogon.png':
    
  Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
    
    Stream #1:0: Video: png, rgba, 400x223 [SAR 2835:2835 DAR 400:223], 25 tbr, 25 tbn, 25 tbc
    
[Parsed_movie_1 @ 0x1b35480] Failed to avformat_open_input '/tmp/vogon_Ql9UW7.gif'
    
[AVFilterGraph @ 0x1af08e0] Error initializing filter 'movie' with args '/tmp/vogon_Ql9UW7.gif'
    
Error configuring filters.
    vogon.py -h: 
    

    
positional arguments:
    
  config_file           Configuration JSON file
    

    
optional arguments:
    
  -h, --help            show this help message and exit
    
  --auth_host_name AUTH_HOST_NAME
    
                        Hostname when running a local web server.
    
  --noauth_local_webserver
    
                        Do not run a local web server.
    
  --auth_host_port [AUTH_HOST_PORT [AUTH_HOST_PORT ...]]
    
                        Port web server should listen on.
    
  --logging_level {DEBUG,INFO,WARNING,ERROR,CRITICAL}
    
                        Set the logging level of detail.
    
  --youtube_upload      Upload generated videos to YouTube
    
  --preview_line PREVIEW_LINE
    
                        Generate only one video, for the given CSV line number

    Makes me think it is an ffmgep issue. What could it be ?

  • Libavcodec "the procedure entry point for av_frame_alloc could not be located" error in Visual Studio 2017 C++ project

    25 novembre 2019, par Aves

    I am trying to use libavcodec from ffmpeg library in C++ with Visual Studio 2017 Community. I downloaded the latest x64 dev and shared builds from zeranoe (version 20171217), set up include directories and additional libraries in Visual Studio for x64 build, added DLL files from shared package to my PATH.

    This is my sample test code :

    extern "C" {
    
#include 
    
}
    
int main() {
    
    avcodec_register_all();
    
    AVFrame *pAvFrame = av_frame_alloc();
    
    av_frame_free(&pAvFrame);
    
    return 0;
    
}

    The code compiles without problems but when I run the application I see a dialogue window with error message "the procedure entry point for av_frame_alloc could not be located in DLL" (actual message is not in English, this is the translated version).

    I tried to set Linker->Optimization->References to /OPT:NOREF as it was advised in the similar questions but it did not help.

    Dependency walker shows that av_frame_alloc is exported, "Entry Point" is not bound. A little bit strange is that av_frame_alloc is displayed in both avcodec-58.dll (as red) and avutil-56.dll (as green). Maybe the reason is that the application is trying to get this function from avcodec instead of avutil, but I’m not sure, since I did not check the source code of these libraries.

    So the question is how to set up such a simple FFMPEG-based C++ project in VS2017, where I’m wrong ?

    UPD. 1.

    Linker flags : /OUT :"C :\work\code\TestFfmpeg\x64\Release\TestFfmpeg.exe" /MANIFEST /NXCOMPAT /PDB :"C :\work\code\TestFfmpeg\x64\Release\TestFfmpeg.pdb" /DYNAMICBASE "c :\work\dev\ffmpeg-20171217-387ee1d-win64-dev\lib*.lib" "kernel32.lib" "user32.lib" "gdi32.lib" "winspool.lib" "comdlg32.lib" "advapi32.lib" "shell32.lib" "ole32.lib" "oleaut32.lib" "uuid.lib" "odbc32.lib" "odbccp32.lib" /DEBUG:FULL /MACHINE:X64 /OPT:NOREF /PGD :"C :\work\code\TestFfmpeg\x64\Release\TestFfmpeg.pgd" /MANIFESTUAC :"level=’asInvoker’ uiAccess=’false’" /ManifestFile :"x64\Release\TestFfmpeg.exe.intermediate.manifest" /OPT:ICF /ERRORREPORT:PROMPT /NOLOGO /TLBID:1

Navigation