Transcoding when it should be direct playing SD content?

[Nathanio 35]

We have been watching some SD avi files this evening and noticed it was transcoding the file rather than direct play. The details are:

Video
CodecMPEG4
ProfileSimple Profile
Level3
Resolution624x352
Aspect ratio16:9
AnamorphicNo
InterlacedNo
Framerate23.97602
Bitrate954 kbps
Bit depth8 bit
Pixel formatyuv420p

Audio
CodecMP3
Layoutstereo
Channels2 ch
Bitrate31 kbps
Sample rate48000 khz
DefaultNo

Just to check that there was a problem with the network or server I tried playing another file:

Video
CodecH264
ProfileHigh
Level41
Resolution1920x800
Aspect ratio2.40:1
AnamorphicNo
InterlacedNo
Framerate23.97602
Bitrate8265 kbps
Bit depth8 bit
Pixel formatyuv420p
Ref frames4
CABACYes

Audio
Languageeng
CodecDCA
ProfileDTS-HD MA
Layout5.1
Channels6 ch
Sample rate48000 khz
DefaultYes

Audio
Languageeng
CodecAAC
ProfileLC
Layout5.1
Channels6 ch
Sample rate48000 khz
DefaultNo

Subtitle
Languageeng
CodecPGSSUB
DefaultYes
ForcedNo
ExternalNo

This file is a relatively high bitrate mkv rip of one of my blurays and this played back direct? A 720p MP4 played back direct as well. Why does the SD file have to be transcoded? Its not too much of a problem as my server can handle it and there is no delay. I'm just more curious to why and am I missing something?

 

Transcode log attached.

transcode-d19fac52-fd0e-4317-9ceb-6c7dfa35de77.txt

[ebr 14960]

We discovered a lot of problems with low-res AVI files direct playing during the last testing round so they are always transcoded to ensure trouble-free playback.

[Nathanio 35]

Thanks ebr. That explains it.