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Sur d’autres sites (5411)

  • How can I store a live stream when internet connection is interrupted ?

    5 juin 2019, par Marcello Moreira

    I’m building a solution using drone and 3g/4g connection.
    I have an IP camera encoded in H.264 by a hardware encoder connected to a raspberry pi and a 3g/4g moldem. The hardware encoder livestream de video via RTMP to a remote server I have. All these devices are in a moving platform, and sometimes the moldem loses connection with internet for a few seconds/minutes. When this happens, I want to store the live footage in the raspberry with ffmpeg, and when the connection restores I can send it back to the server. I have access to the encoded livestream from the raspberry pi over LAN even when internet is down.

    I do not know how and where should I start.
    I see two approaches for this.

    First approach

    One is to do all the streaming via ffmpeg, and disable the automatic hardware stream, when ffmpeg detects that it can’t send stream to the remote server, it starts to store the video (like a buffer) until the connection is restore. The issue with this, is that I don’t know if ffmpeg can detect if internet connection is down, and how can I buffer the video. Also by doing this, when connection is restored, live video would have a huge delay, and I can’t have lot’s of delay in my solution.

    Second approach

    The second is simultaneously store with ffmpeg the live video, when internet goes down, a process records the timestamp, and keeps watching until internet connection is restored. Then it sends to my server only the missing piece. At my server I would need to figure out a way to join those streams back up.. (I would gladly accept tips on that too). Issue with this is that there’s limited space in my raspberry, so I can only store a limited amount. Also, my device may be turned off when it lands so I need to send the video recording ASAP after connection is restored.

    So, which approach seems to be the better one ?

  • Store a live stream when internet connection is interrupted ?

    6 juin 2019, par Marcello Moreira

    I’m building a solution using drone and 3g/4g connection.
    I have an IP camera encoded in H.264 by a hardware encoder connected to a raspberry pi and a 3g/4g modem. The hardware encoder livestream de video via RTMP to a remote server I have. All these devices are in a moving platform, and sometimes the modem loses connection with internet for a few seconds/minutes. When this happens, I want to store the live footage in the raspberry with ffmpeg, and when the connection restores I can send it back to the server. I have access to the encoded livestream from the raspberry pi over LAN even when internet is down.

    I do not know how and where should I start.
    I see two approaches for this.

    First approach

    One is to do all the streaming via ffmpeg, and disable the automatic hardware stream, when ffmpeg detects that it can’t send stream to the remote server, it starts to store the video (like a buffer) until the connection is restore. The issue with this, is that I don’t know if ffmpeg can detect if internet connection is down, and how can I buffer the video. Also by doing this, when connection is restored, live video would have a huge delay, and I can’t have lot’s of delay in my solution.

    Second approach

    The second is simultaneously store with ffmpeg the live video, when internet goes down, a process records the timestamp, and keeps watching until internet connection is restored. Then it sends to my server only the missing piece. At my server I would need to figure out a way to join those streams back up.. (I would gladly accept tips on that too). Issue with this is that there’s limited space in my raspberry, so I can only store a limited amount. Also, my device may be turned off when it lands so I need to send the video recording ASAP after connection is restored.

    So, which approach seems to be the better one ?

  • Can FFMPEG binaries be embedded into a commercial closed source application ?

    2 avril 2015, par James

    I am building a closed source, commercial audio processing tool that relies in part on making command line calls to ffmpeg.exe (on Windows).

    Can I legally package an unmodified ffmpeg.exe in my installer and program directory without making my app open source/are there any crucial rules e.g. distributing the ffmpeg source ?

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