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Autres articles (108)

  • 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 (...)

  • 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 : (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

Sur d’autres sites (9345)

  • ffmpeg join two mp4 videos one after another

    24 septembre 2015, par Grbe1l

    I’ve got 2 videos I want them to join into one video using ffmpeg. I am running these commands in Java so I need it to use the command line so no other programme solutions apply. I have tried many different ways but non seem to work. So i got a video of 35 seconds and one of 5 seconds I need a output of 40 seconds this never seems to happen. if anyone could help it would be greatly appreciated

  • ffmpeg join two mp4 videos one after another

    7 juin 2019, par Grbe1l

    I’ve got 2 videos I want them to join into one video using ffmpeg. I am running these commands in Java so I need it to use the command line so no other programme solutions apply. I have tried many different ways but non seem to work. So i got a video of 35 seconds and one of 5 seconds I need a output of 40 seconds this never seems to happen. if anyone could help it would be greatly appreciated

  • Encoding and decoding timestamps per frame using libav* into mp4

    9 mai 2019, par Kevin

    I am writing a program for recording and playing back video together with another program that is connected to a piece of hardware we sell. This other program gathers data from hardware, which contains "timestamp" counters at a fixed sampling rate.

    I am looking for a way to encode these timestamps (either raw or converted to unix) into the outputted mp4 file. The main reason being that the video stream might only start getting saved a few minutes into the hardware acquisition

    Recording :

                    timestamp
    
Main program --------------->  Video program
    
  |                                 |
    
  |                                 |
    
  v                                 v
    
Save hardware data               Save frame data
    
  and timestamp                    and timestamp
    

    
  |                                 |
    
  |                                 |
    
  v                                 v
    
Custom data format                .mp4 file

    Post processing analysis :

    for i in range(0,datalen):
    
    hardwareData, timestamp = readHardwareFile()
    
    frame, timestamp = readMP4()
    

    
    myData[timestamp].hardware = hardwareData
    
    mydata[timestamp].video = frame
    

    
analyze(myData)

    The goal being that when a I want to playback in VLC, or with OpenCV, I have access to timestamps for each frame.

    I currently save it as a separate text file with timestamp and frame #, but I’m wondering if there is a more standardized way to do this.

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