Re: Get camera timestamp from rtsp stream.

On Mon, 17 Jul 2023 at 11:06 Антон Шаров via gstreamer-devel <
[email protected]> wrote:

>
> Hi.
>
> I’m given rtsp stream from camera, where each frame has capturing
> timestamp.
> Connection strin looks like rtsp://{usr}:{pwd{@ip_addr
> /onvif/media?profile=Profile1
> I need to store this data for some time and provide search access for this
> data, either return closest (exact) frame for provided timestamp or
> return mp4 file which containts this closest frame. My first pipeline is  rtsp
> ! h264depay ! h264parse ! splitmuxsink  location=… max-time-size=10seconds
> (for example), when I save new file via splitmuxsink, I’m some how need to
> get camera timestamp
> for first frame of video (or key frame) and maybe store this mp4 file as
> timestamp.mp4 (or save ts for later in some db, for example).
>
> Other approach is to use jpegenc and to store each frame with it’s
> timestamp, but I don’t know how to obtain timestamp for jpeg buffer (rtsp !
> decodebin ! jpegenc ! appsink). But  I assume  that this won’t be effective
> solution in terms of CPU and storage usage, and better to store mp4 files.
>
> So, in both cases I don’t know how to get reference-timestamp-meta for
> needed buffer.
>
> Can someone help me?
>
> PS: I use C# wrapper, namely gstreamer-sharp, but I don’t think it is
> relevant for this problem.
>
> Thanks in advance.
>
> --
> С Уважением,
> Шаров Антон
>