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bashir-fmslive
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Upgrading from FMS_4_5_0_r297 to FMS_4_5_1_r484 using ffmpeg will kill recording append ability

Apr 5, 2012 10:09 AM

I would like to warn anyone using ffmpeg that upgrading to FMS_4_5_1_r484 will kill your append recording.

 

As discussed in http://forums.adobe.com/message/4280166 even fmle encoders are having problems appending recordings with absolute time enabled.

 

Reseting the recording with this query "adbe-live-event=croaporter&adbe-record-mode=record" or a change in your main.asc might be a solution for some but this will cause a disruption for clients connected to the stream.

 

For myself and I'm sure many others this is not a solution it seems like a bug. We need a solution that does not require a client to reset their browser page or client application which means overall disruptions in the viewer experience.

 

I can vouch that in FMS_4_5_0_r297 appending to a recording was done seemlessly on  a 24/7 stream (and i have over 30 streams running). Sometimes for some reason an encoder will attempt to republish or will require a flush (forced restart) and with FMS_4_5_1_r484 this is not possible. Yes you can start a new recording but what happened to appending the recording, it was working.

 

I have tried to insert into the Event.xml a maxrestartage and removed absolute time code from Application but it will not work.

 

I dont know if FFmpeg has absolute time code implemented in the librtmp libraries to emulate fmle time synchronisation but even fmle users have this problem so I believe that this should be fixed in the next upgrade but for now I suggest all others who want to use a more efficient encoder such as ffmpeg as compared to fmle to be very careful when upgrading.

 

I did notice some new hls buffering issues that have arised from this new upgrade as well which 4.5.0 didnt have.

 

I am even willing to pay for support to solve this problem because 4.5.1 seems to have better monitoring in the administration console. But for now I am downgrading to FMS_4_5_0_r297 because it works.

 

Regards

Bashir

 
Replies
  • Currently Being Moderated
    Apr 7, 2012 12:15 AM   in reply to bashir-fmslive

    Can you please let me know the parameters you are using with ffmpeg for publishing?

    I would like to setup a repro of the case at my end.

     
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