#9949 NORM 1.5-sof: Recording no smoothly while do record test in sugar

[Zarro Boogs per Child]

#9949: Recording no smoothly while do record test in sugar
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           Reporter:  Andy Pei         |       Owner:  dsd                               
               Type:  defect           |      Status:  new                               
           Priority:  normal           |   Milestone:  1.5-software-later                
          Component:  record-activity  |     Version:  1.5 Software Build os64 aka 10.1.0
         Resolution:                   |    Keywords:                                    
        Next_action:  reproduce        |    Verified:  0                                 
Deployment_affected:                   |   Blockedby:                                    
           Blocking:                   |  
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Comment(by sayamindu):

 A few observations:
  * The default device is being chosen wrongly for some reasons (need to
 manually set the alsa device for the gstreamer alsasrc element to hw:0,0)
  * To work around the recording being truncated (shorter than expected),
 the property 'sync' of the filesink gstreamer element needs to be set to
 True
  * In OS 109, 1.5 B2, Record takes up around 60-75% of the CPU (as per
 top) while just displaying the video from the webcam. Trying to encode
 vorbis on the fly while recording (when one is recording just the audio,
 haven't tested video+audio yet) results in dropped data, and ogginfo
 describes the file with warnings like:
  {{{
  Warning: sequence number gap in stream 1. Got page 37 when expecting page
 36. Indicates missing data.
  Warning: discontinuity in stream (1)
  Warning: discontinuity in stream (1)
  Warning: discontinuity in stream (1)
  Warning: discontinuity in stream (1)
  Warning: discontinuity in stream (1)
  Warning: discontinuity in stream (1)
  Warning: discontinuity in stream (1)
  ...
  }}}
  * Using something other than vorbis such as wav or flac works, but takes
 up a significant amount of disk space.

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Ticket URL: <http://dev.laptop.org/ticket/9949#comment:6>
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