FMLE 3.2 capturing fewer frames after 8 hours of recording but no 'dropped frames' reported

A client of ours is capturing 20x live streams via FMLECMD directly to F4V files (15min chunks) for ~21 hours a day. They're finding that after approx 8 hours of recording, FMLE gradually reduces the number of frames it's recording & the resulting files have very choppy playback (no dropped frames are reported). It eventually crashes on most of the machines before completing a day's work. Some machines also display a C++ error message on crash whereas others just freeze up.

One PC was set to capture a blank input & doesn’t exhibit this behaviour ie captures at the initial/specified framerate even 20hrs in. Please see the profile xml below.

The spec of the capture workstations is:

HP Z200 i3 i3-540/3.06GHz/2GB/160GB Hard Drive/DVD-Writer/ Intel Graphics Media Accelerator HD/Windows 7 Professional

Blackmagic Design Intensity Pro in each, running Adobe Flash Media Live Encoder 3.2 (scripted to launch via CLI with no preview). These PCs are fresh out-of-the-box & have never been online.

As an immediate/short-term workaround, we've set a restart interval for FMLE of 5 hours but this compromises the recordings as the stop/start process obviously results in a loss of recording time & requires manual file renaming. Please note, none of the machines are streaming - just capturing locally to F4V.

--- Profile XML ---

<?xml version="1.0" encoding="UTF-16"?>

<flashmedialiveencoder_profile>

<preset>

<name>Custom</name>

<description></description>

</preset>

<capture>

<video>

<device>Decklink Video Capture</device>

<crossbar_input>2</crossbar_input>

<frame_rate>25.00</frame_rate>

<size>

<width>720</width>

<height>576</height>

</size>

</video>

<audio>

<device>Decklink Audio Capture</device>

<crossbar_input>0</crossbar_input>

<sample_rate>22050</sample_rate>

<channels>1</channels>

<input_volume>75</input_volume>

</audio>

<timecode>

<frame_rate>5</frame_rate>

<systemtimecode>true</systemtimecode>

<devicetimecode>

<enable>false</enable>

<vertical_line_no>16</vertical_line_no>

<burn>false</burn>

<row>Bottom</row>

<column>Left</column>

</devicetimecode>

</timecode>

</capture>

<process>

<video>

<preserve_aspect></preserve_aspect>

</video>

</process>

<encode>

<video>

<format>H.264</format>

<datarate>200;</datarate>

<outputsize>720x576;</outputsize>

<advanced>

<profile>Main</profile>

<level>3.0</level>

<keyframe_frequency>5 Seconds</keyframe_frequency>

</advanced>

<autoadjust>

<enable>false</enable>

<maxbuffersize>1</maxbuffersize>

<dropframes>

<enable>false</enable>

</dropframes>

<degradequality>

<enable>false</enable>

<minvideobitrate></minvideobitrate>

<preservepfq>false</preservepfq>

</degradequality>

</autoadjust>

</video>

<audio>

<format>MP3</format>

<datarate>48</datarate>

</audio>

</encode>

<restartinterval>

<days>1</days>

<hours>5</hours>

<minutes>00</minutes>

</restartinterval>

<reconnectinterval>

<attempts></attempts>

<interval></interval>

</reconnectinterval>

<output>

<file>

<limitbysize>

<enable>false</enable>

<size>10</size>

</limitbysize>

<limitbyduration>

<enable>true</enable>

<hours>0</hours>

<minutes>15</minutes>

</limitbyduration>

<path>C:\VideoServer\XXX\XXXXX.f4v</path>

</file>

</output>

<metadata>

<entry>

<key>author</key>

<value></value>

</entry>

<entry>

<key>copyright</key>

<value></value>

</entry>

<entry>

<key>description</key>

<value></value>

</entry>

<entry>

<key>keywords</key>

<value></value>

</entry>

<entry>

<key>rating</key>

<value></value>

</entry>

<entry>

<key>title</key>

<value></value>

</entry>

</metadata>

<log>

<level>100</level>

<directory>C:\logs</directory>

</log>

</flashmedialiveencoder_profile>