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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

Sur d’autres sites (4873)

  • ffmepg concat videos is blocking in a frame

    5 septembre 2020, par عليلو احمد

    I am using this command to concatinate videos and audio in one single video :

    


    subprocess.run("ffmpeg -stream_loop -1 -f concat -i input.txt -i "+audioPath+" -map 0:v -map 1:a -c:v libx264 -crf 29 -preset slower -shortest -movflags +faststart output.mp4")


    


    And i'm facing a problem, the video sometimes stack in a frame, see Example

    


  • upload video stream and audio stream on iOS

    18 juillet 2015, par ronan

    Here’s the needs : People record their video via my App and upload stream to our website, you know, like a live show.

    When they are recording, the network goes bad, then record audio instead of video.
    And when audience watch, first comes the video, in a certain time comes the audio with a static picture.

    How am I supposed to do that ? Thanks.

  • Unusual results extracting VP9 pkt_size with ffprobe as compared to H.264

    26 novembre 2016, par Jeff S.

    I’m trying to graph the bitrate over time for H.264 and VP9 videos by extracting the frame size with ffprobe, but many of the VP9 videos are showing significantly lower bitrate and total size than both the file size would indicate and that ffprobe reports.

    Can someone point me in the right direction for finding the missing bytes ?

    For example :

    # The extracted values and the ffprobe values are very close for mp4
    
Video Codec: h264
    
Video Bitrate: 0.668869
    
Frame Bitrate: 0.665552571931
    
Video Size: 6381536.0
    
Frame Total Size: 6349891
    

    
# The extracted values and the ffprobe values are very different for some vp9 videos
    
Video Codec: vp9
    
Video Bitrate: 0.600966
    
Frame Bitrate: 0.375144984531
    
Video Size: 5730519.0
    
Frame Total Size: 3577195

    Below is what I’m using for validation. Note that the sample videos do not contain audio.

    import subprocess
    
import json
    

    
def export_video_info(video_id):
    
    proc = subprocess.Popen(['ffprobe',
    
        '-v', 'quiet', '-print_format', 
    
        'json', '-show_format',
    
        '-show_streams', '-show_frames',
    
        video_id
    
        ],
    
        stdout=subprocess.PIPE,
    
    )
    
    return proc.communicate()[0]
    

    
# Example video:  https://www.youtube.com/watch?v=g_OdgCrnzYo
    
# youtube-dl --id -f 135 https://www.youtube.com/watch?v=g_OdgCrnzYo
    
# youtube-dl --id -f 244 https://www.youtube.com/watch?v=g_OdgCrnzYo
    
video_list = ['g_OdgCrnzYo.mp4', 'g_OdgCrnzYo.webm']
    

    
'''
    
Format for every frame: 
    

    
    {
    
        "media_type": "video",
    
        "key_frame": 0,
    
        "pkt_pts": 84484,
    
        "pkt_pts_time": "84.484000",
    
        "pkt_dts": 84484,
    
        "pkt_dts_time": "84.484000",
    
        "best_effort_timestamp": 84484,
    
        "best_effort_timestamp_time": "84.484000",
    
        "pkt_duration": 33,
    
        "pkt_duration_time": "0.033000",
    
        "pkt_pos": "7103361",
    
        "pkt_size": "28",
    
        "width": 854,
    
        "height": 480,
    
        "pix_fmt": "yuv420p",
    
        "sample_aspect_ratio": "1:1",
    
        "pict_type": "P",
    
        "coded_picture_number": 0,
    
        "display_picture_number": 0,
    
        "interlaced_frame": 0,
    
        "top_field_first": 0,
    
        "repeat_pict": 0
    
    },
    
'''
    

    

    
# NOTE: videos do not include audio
    
for video in video_list:
    
    output = json.loads(export_video_info(video))
    
    ff_bitrate = float(output['format']['bit_rate']) / 10**6
    
    ff_duration = float(output['format']['duration'])
    
    ff_codec = output['streams'][0]['codec_name']
    
    ff_size = float(output['format']['size'])
    
    frame_size_sum = 0
    
    for val, items in enumerate(output['frames']):
    
        if output['frames'][val]['media_type'] == 'video': 
    
            frame_size_sum += int(output['frames'][val]['pkt_size'])
    

    
    frame_bitrate = frame_size_sum / ff_duration * 8 / 10**6
    
    print('Video Codec: {}\nVideo Bitrate: {}\nFrame Bitrate: {}\nVideo Size: {}\nFrame Total Size: {}\n\n'.format(ff_codec, ff_bitrate, frame_bitrate, ff_size, frame_size_sum))

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