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A
Anonymous
August 13, 2009
Question

FLV video freezes after camera switched on but video *is* in file

  • August 13, 2009
  • 1 reply
  • 1101 views

I'm baffled and any help would be great.  I had an flv recording from a webcam.  It mostly recorded fine, but there's one point where I paused the broadcast for an intermission.  A few minutes later the broadcast started again but the video doesn't play beyond that point, only audio plays.  A few minutes later in the recording the broadcast switched to another camera and the video starts playing again just fine from there.

I can't seek past the frozen point either to skip a couple of seconds ahead.  The freeze is at about 9:00.  If I seek to 9:01 it jumps ahead 8 minutes to where the camera switches.

What's strange in this is that the video is *definitely* in the file.  Using Moyea's FLV Editor Pro I converted the FLV to an MPEG and the whole video is there, so it's not that the camera stopped transmitting, it's just that the playback isn't working.

Any ideas on what might cause this and (more importantly) how I might go about fixing the file?

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    1 reply

    S
    SE_0208
    Participating Frequently
    August 14, 2009

    Is there any chance, that when you started broadcast again after intermission, codec was changed in between say from VP6 to H.264?

    A
    Anonymous
    August 17, 2009

    That's a good thought, but it doesn't seem likely.  All that happened was the stream recording was stopped and then, a few minutes later recording was resumed.

    After much fussing with it I managed to extract the video data, but there was only one app that could read it.  Moyea FLV Editor Pro had no problem reading the data and exporting it to another format.  From there I re-encoded it to FLV.  But nothing else could read it.  FLVCheck found a backwards timestamp, but nothing was able to fix that.  I've seen that many times (never exactly sure why) and it hasn't ever caused a problem like this.

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