MP4 Video starts fine, but stops rendering mid-play... help!

I'm currently working on a flash project that has an intro video that plays before heading into the main app. This video is an H.264 .mp4, 1550x540, and around 10MB.

The problem thats currently driving me insane is that when I test it, occasionally the video will begin playing, and then suddenly stop rendering the video frames, leaving the audio playing in the background with nothing on screen. Once the file is played through fully (based on listening to the audio), my playback complete event fires like it should, but I can't find any info of people having similar issues.

Attached is a trace of the .mp4 metadata in case that helps.

>videoframerate : 24
audiochannels : 2
audiocodecid : mp4a
audiosamplerate : 48000
trackinfo:
0:
length : 608000
timescale : 24000
language : eng
sampledescription:
0:
sampletype : avc1
1:
length : 1218560
timescale : 48000
language : eng
sampledescription:
0:
sampletype : mp4a
duration : 25.386666666666667
width : 1540
videocodecid : avc1
seekpoints:
0:
time : 0
offset : 13964
1:
time : 0.333
offset : 16893
2:
time : 0.667
offset : 34212
...
73:
time : 24.333
offset : 9770329
74:
time : 24.667
offset : 9845709
75:
time : 25
offset : 9895215
moovposition : 32
height : 540
avcprofile : 77
avclevel : 51
aacaot : 2

This has been driving me absolutely insane... any help would be much appreciated!