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Sur d’autres sites (11690)

  • FFMPEG with javaCV can't open stream

    29 juin 2015, par rgomes

    I having a strange behavior when testing to get the video Stream of a Mobotix camera, I’m using javaCV 0.11.
    When I set a timeout I can’t open the stream, the stream only open if I don’t set the timeout parameter.

    I verified this behavior with javaCV 0.11 and Java CV 0.11 in version 0.9 and 0.8 it works with the timeout.

    Probably an error of the lib JavaCV or the way I’m using it :P

    My question for the ffmpeg experts is the following :

    When I’m calling :

    avformat_open_input

    the function returns -138

    I called the function av_strerror fir this error code and the function was returned "Error number -138 occurred".

    A description not very useful, can someone tell me what this error means ?

  • ffmpeg lavfi distorted audio

    11 mars 2017, par John

    How to play audio at a normal rate ?

    First 2s play fine, then audio becomes distorted, it seems to speed up.

    ffmpeg -f image2 -loop 1 -framerate 25 -i example.jpg -lavfi "amovie=sample.aac:loop=0" -f flv rtmp://192.168.99.100:1935/live/mystream2

    Repeating audio with loop:0 returns `[flv @ 0000000000708220] Non-monotonous DTS in output stream 0:0 ;

    audio : http://cdn.online-convert.com/example-file/audio/example.aac

    Thank you.

  • How to retrieve FFMPEG (called from OpenCV) Python decoding error

    15 décembre 2020, par user9784065

    While trying to read a video stream form an IP camera using :

    



    stream = cv2.VideoCapture(src)
(grabbed, frame) = stream.read()


    



    The grabbed returns True while sometimes the frames are corrupted (probably due to high CPU load). An internal Opencv error like the following is showing on the terminal :

    



    [h264 @ 0x25e99400] error while decoding MB 87 29, bytestream -5


    



    Is there a way to catch this error ? Please note that I tried the obvious try:except with cv2.error etc. In such case of corrupted frame it would be preferable to restart the connection to the camera.

    


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