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  • Mise à jour de la version 0.1 vers 0.2

    24 juin 2013, par

    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
    Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

Sur d’autres sites (12124)

  • How to pipe multiple inputs to ffmpeg through python subprocess ?

    14 avril 2021, par D. Ramsook

    I have a ffmpeg command that uses two different input files (stored in 'input_string'). In ffmpeg '-' after the '-i' represents reading from stdin.

    


    I currently use the below setup to collect the output of the command. How can it be modified so that fileA and fileB, which are stored as bytes, are piped as the inputs to the ffmpeg command ?

    


    from subprocess import run, PIPE

with open('fileA.yuv', 'rb') as f:
    fileA = f.read()

with open('fileB.yuv', 'rb') as f:
    fileB = f.read()   


input_string = """ffmpeg -f rawvideo -s:v 1280x720 -pix_fmt yuv420p -r 24 -i - -f rawvideo -s:v 50x50 -pix_fmt yuv420p -r 24 -i - -lavfi  ...#remainder of command"""
result = run(input_string, stdout=PIPE, stderr=PIPE, universal_newlines=True)
result = result.stderr.splitlines()


    


  • Capturing Screen with FFMPEG on RTP protocol

    23 septembre 2020, par mertakkartal

    I am struggling about capturing the screen of remote computer on the same network with ffmpeg on RTP protocol.

    


    On the remote computer I run these two parameter blocks in different bash scripts for making the server catches the stream.

    


    For video :

    


    ffmpeg -f x11grab -framerate 25 -video_size uhd2160 -i :0.0 -c:video h264_nvenc -preset fast -pix_fmt bgr0 -b:v 6M -g 25 -an -f rtp_mpegts rtp://multicastaddress:videoPort

    


    For Audio :

    


    ffmpeg -f alsa -i hw:0,0 -c:audio aac -b:a 48K -f rtp_mpegts rtp://multicastaddress:audioPort

    


    Then , I run my ffmpeg capturing screen parameter block from the server as root privilege like as below :

    


    ffmpeg -y -buffer_size 425984 -thread_queue_size 32 -i rtp://@multicastaddress:videoPort -buffer_size 5000 -thread_queue_size 32 -i rtp://@multicastaddress:audioPort -map 0:0 -map 1:0 -c:v copy -c:a copy output.mp4

    


    When I run it , it outputs those errors as below ,

    


    [rtp @ 0x2329380] RTP: missed 284 packets
[rtp @ 0x2329380] RTP: missed 487 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1320.4kbits/s speed=1.27x    
[rtp @ 0x2329380] RTP: missed 2204 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1308.9kbits/s speed=1.24x    
[rtp @ 0x2329380] RTP: missed 300 packets
[rtp @ 0x2329380] max delay reached. need to consume packet
[rtp @ 0x2329380] RTP: missed 468 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1155.6kbits/s speed= 1.2x    
[rtp @ 0x2329380] RTP: missed 2222 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1197.0kbits/s speed=1.19x    
[rtp @ 0x2329380] RTP: missed 278 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1156.1kbits/s speed=1.18x    
[rtp @ 0x2329380] RTP: missed 303 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1064.8kbits/s speed=1.32x    
[rtp @ 0x2329380] RTP: missed 3 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1064.8kbits/s speed=1.17x    
[rtp @ 0x2329380] RTP: missed 280 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1095.4kbits/s speed=1.16x    
[rtp @ 0x2329380] RTP: missed 1737 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1084.1kbits/s speed=1.15x    
[rtp @ 0x2329380] RTP: missed 485 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1142.9kbits/s speed=1.14x    
[rtp @ 0x2329380] RTP: missed 767 packets
[rtp @ 0x2329380] max delay reached. need to consume packet
[rtp @ 0x2329380] RTP: missed 3 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1080.6kbits/s speed=1.14x    
[rtp @ 0x2329380] RTP: missed 1562 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1063.9kbits/s speed=1.13x    
[rtp @ 0x2329380] RTP: missed 282 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1065.8kbits/s speed=1.12x    
[rtp @ 0x2329380] RTP: missed 1 packets
[rtp @ 0x2329380] max delay reached. need to consume packet
[rtp @ 0x2329380] RTP: missed 771 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1024.3kbits/s speed=1.11x    
[rtp @ 0x2329380] RTP: missed 1731 packets
[rtp @ 0x2329380] max delay reached. need to consume packet bitrate=1019.1kbits/s speed=1.11x    
[rtp @ 0x2329380] RTP: missed 298 packets

frame=  453 fps=8.9 q=-1.0 Lsize= 7397kB time=00:00:56.60 bitrate=1070.6kbits/s speed=1.11x


    


    After checking the video output with mpv player or ffplay ,I can observe that parameters from server caught the stream but mostly with lost packets so there are distortions in the video output file.

    


    I tried protocol_whitelist "file,rtp,udp" for preventing packet loss but it did not work out unfortunately.

    


    Any other parameter for solving this issue ?

    


  • Merge 675 video files

    24 février 2021, par RewossKy

    I divided the 90 minute video file into 8 seconds without loss. So far, no problem. I want to merge the resulting 675 mp4 files without converting them to a .ts file. When I convert it to TS file, 1 second of each track starts dull. Can you suggest a method that I can combine 675 mp4 files in batch without any problem ?

    


    My work on cropping ;

    


    
    ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:00:08 -t 00:00:08 s1.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:00:16 -t 00:00:08 s2.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:00:24 -t 00:00:08 s3.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:00:32 -t 00:00:08 s4.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:00:40 -t 00:00:08 s5.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:00:48 -t 00:00:08 s6.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:00:56 -t 00:00:08 s7.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:01:04 -t 00:00:08 s8.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:01:12 -t 00:00:08 s9.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:01:20 -t 00:00:08 s10.mp4
ffmpeg -i 1.mp4 -vcodec libx264 -crf 30 -ss 00:01:28 -t 00:00:08 s11.mp4



    


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