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Autres articles (54)
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Les tâches Cron régulières de la ferme
1er décembre 2010, parLa 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 (...) -
La sauvegarde automatique de canaux SPIP
1er avril 2010, parDans 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 (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...)
Sur d’autres sites (4851)
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How you show the GOP structure of a video ?
1er mai 2016, par medic911I use ffmpeg and h.265 codec. I want to evaluate the structure of the GOP. I found how to do with ffprobe :https://forums.creativecow.net/thread/291/71
./ffprobe -show_frames -pretty two_pass.mp4 | grep size|pict_type|coded_picture_number’
I tried it but it did not work. Are there some similar solution ?
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How to get and show volume input level from rtsp using ffplay
4 septembre 2019, par XavierI´m trying to get and display the volume level from an ip camera with rtsp protocol. By now i achieved with ffmpeg but i need to do it with ffplay.
I have tried many combinations with no luck. Some of these
ffplay -f lavfi -i rtsp://admin:admin@10.0.0.99:554/live/ch0:showvolume=f=0:b=0:w=310:h=59:o=v:m=p
Gives error "No such filter : ’rtsp ://admin:admin’"
ffplay -f lavfi "amovie ='audio\=rtsp://admin:admin@10.0.0.99:554/live/ch0',showvolume=f=0:b=0:w=310:h=59:o=v:m=p"
Gives error "Undefined constant or missing ’(’ in ’admin@10.0.0.99’ and so many others.
ffplay -f lavfi "amovie ='audio\=Microphone (Realtek High Definition Audio)':f=dshow,showvolume=f=0:b=0:w=310:h=59:o=v:m=p"
This code works with internal notebook microphone but i can`t see how to replace dshow with RTSP
I already tried others combinations but nothing works.
I need to know how specify an rtsp input with lavfi or any other way to show volume input level from a rtsp with ffplay.
Thanks in advance -
How to generating waveform from video & show it with video
25 novembre 2016, par SalilWe are using Rails as a backend & AngularJS on Front End side in my App where we need to show Video & audio waveform of that video.
We are using ’wavesurfer.js’ to show the waveform on Front End side & ’node-pcm’ to generate pcm from video file on BackEnd side.
This is working as expected but in some of the videos while creating waveform from pcm data instead of showing small sine waves we get flat line.
Also it takes too much time to show the waveform for every page reload.To overcome this issue we are planning to create waveform image using ffmpeg
ffmpeg -i 'https://s3.amazonaws.com/aadasdsadsadasdas/xyz.mp4' -filter_complex showwavespic -frames:v 1 output.png
This is working fine but it also takes too much time (Ofcourse only once ) to generate the image for remote video (i.e. We are saving videos on S3)
Problem with this i don’t get any library to integrate the waveform image with the Video.
Can someone suggest any better approach related to this.