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  • Download RTSP recording content between two dates and times, or from start seconds to end seconds

    23 septembre 2022, par holt2

    I need to download from an RTSP link the content recorded on an IP camera from a start and end date and time. It would also be valid to be able to download it from X seconds of start of the recording to seconds of end.

    


    With this ffmpeg command I download the recording content from the RTSP link only from the beginning of the recording content, with the duration in seconds passed by the -t parameter :

    


    ffmpeg -rtsp_transport tcp -i  -r 30 -t <seconds> -y -vf scale=800:-1 -c:v libx264 -crf 20 -preset fast -c:a aac -strict experimental -b:a 192k -ac 2 /path/to/video/filename.mp4&#xA;</seconds>

    &#xA;

    I tried to download with ffmpeg the content using temporary media fragment URIs (https://www.w3.org/2008/WebVideo/Fragments/wiki/UA_Server_RTSP_Communication#.281.29_Temporal_Media_Fragment_URIs) but it doesn't do it correctly :

    &#xA;

    ffmpeg -rtsp_transport tcp -i #t=10,20 -r 30 -y -vf scale=800:-1 -c:v libx264 -crf 20 -preset fast -c:a aac -strict experimental -b:a 192k -ac 2 -ss 19:09:13 -t 5 /path/to/video/filename.mp4&#xA;

    &#xA;

    I have also tried with ffmpeg to use the -ss parameter to try to extract the recording from a specific hour, minute and second (https://trac.ffmpeg.org/wiki/Seeking) but when running it gets stuck, it does not advance :

    &#xA;

    ffmpeg -rtsp_transport tcp -i  -r 30 -y -vf scale=800:-1 -c:v libx264 -crf 20 -preset fast -c:a aac -strict experimental -b:a 192k -ac 2 -ss 19:09:13 -t <seconds> /path/to/video/filename.mp4&#xA;</seconds>

    &#xA;

    In case it's helpful, to get the RTSP link, I'm using the ONVIF protocol with a NodeJS library (https://github.com/agsh/onvif). I have also reviewed the ONVIF documentation available but have not found a way to download recorded content between start and end dates and times.

    &#xA;

    Do you know how to download from an RTSP link the content recorded on an IP camera from a start date and time and end date, or download it from X seconds of recording start to seconds of end ?

    &#xA;

    I am also open to use other tools or commands that can do this.

    &#xA;

  • How to download part of videojs live stream with ffmpeg ?

    13 octobre 2022, par CptanPanic

    I would like to be able to save 10-20 seconds of a livestream site that uses videojs, but due to it using videojs, it isn't as simple as finding the m3u8 file to stream. Any ideas ?

    &#xA;

    An example stream is https://www.cityoffortpierce.com/823/Jetty-Inlet-Webcam

    &#xA;

  • SHA256 from 7z file not matching FFMPEG download SHA

    15 mars 2021, par mandown2308

    I downloaded this : https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-full.7z but the SHA256 which appears when right-clicking at the downloaded folder is not the same as it is shown at the link. Is this a legit file ?

    &#xA;

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