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  • FFmpeg playable MP4 segmented video from RTSP

    5 février 2021, par Michael Novotný

    I have problem with creating playable uncomplete MP4 file created from FFMPEG. In my case I have some infinite RTSP stream (h.264) from IP camera.
My target is record this stream to MP4 files for playback. If i use FFMPEG mp4 muxer, work correctly.

    


    /usr/bin/ffmpeg -progress pipe:5 -use_wallclock_as_timestamps 1 -analyzeduration 10000000 -probesize 10000000 -fflags +igndts -rtsp_transport tcp -hwaccel auto -loglevel warning -i rtsp://****:****@*******:****/ -y -an -vcodec copy -strict experimental -movflags frag_keyframe+empty_moov -f segment -segment_format mp4 -segment_format_options movflags=+faststart -segment_atclocktime 1 -reset_timestamps 1 -strftime 1 -segment_time 15 /Shinobi/videos/bWkwjTWdRt/Rm67cYyq50/test-%S.mp4


    


    FFMPEG will create one MP4 file which still increasing its size. If I try copy or simply open this (uncomplete, still increased ... of course :) ) file, it's correcly play. But it's still only one file ... still bigger and bigger. For long-term recording cam (few weeks) it's not good.
I want segment this stream to multiple smaller MP4 files (as you knows from another typical NVR systems). For example : segment for 30minutes.
I used "segment" muxer.

    


    /usr/bin/ffmpeg -progress pipe:5 -use_wallclock_as_timestamps 1 -analyzeduration 10000000 -probesize 10000000 -fflags +igndts -rtsp_transport tcp -hwaccel auto -loglevel warning -i rtsp://*****:****@*********:****/ -y -an -vcodec copy -strict -2 -movflags frag_keyframe+empty_moov -f mp4 -segment_atclocktime 1 -reset_timestamps 1 -strftime 1 -segment_list pipe:8 -segment_time 15 /Shinobi/videos/bWkwjTWdRt/Rm67cYyq50/test-%S.mp4


    


    It looks like work correctly. New file with defined mask is created every 30 minutes. If I try copy or simply open(and play) anyone "completed 30min segment file" it"s works correctly. Problem is with last file (more precisely : newest, still uncompleted last segment file) - it's not playable (moov atom not found).

    


    I Googled my problem many time with another keywords. I was try many my wonders. I readed FFMPEG documentation maybe 5times.

    


    Problem is with second passthroug which "segment muxer" do (which do -movflags +faststart .. for example). It's logicaly, second passthroug not be did in last(newest) file yet.

    


    Is there way to make it work ? If I want see time for 2-3 mins ago it's no possible wait up to 30minutes for "complete segment" ... and at the same time it is not possible to have a billion files with 2-3sec segments.
How did other NVR systems solve this ? Synology, Hikvision and more has in their file system recorded MP4 soubory which one of them is still uncompleted, still growing, but normaly PLAYABLE.

    


    A few last days I tried this with no success. I'am absolutely angry and sad. I hope that my text is understandable

    


    Thank you

    


    This options has no effect in my case (tried) :

    


    -movflags frag_keyframe+empty_moov

    


    -movflags faststart

    


    -movflags separate_moof

    


    -fragsize *** / -fragtime ***

    


    -strict -2 / -strict experimental

    


  • Anomalie #3539 : 2 fois prévisualiser pour voir le bloc de prévisualisation

    30 octobre 2015, par chan kalan

    De mon côté je reproduis le problème.
    plugin Forum 1.9.29
    Un bug au chargement ajax ?

  • Anomalie #2022 : redirection des anciennes urls .php3

    6 avril 2011, par cedric -

    Il y a un visiblement d’autres cas http://www.vbulletin.com/forum/project.php?issueid=11446

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