Improper Playback of H.264 L4.1 Compliant Files


#1

I am posting this thread regarding the decoding ability of the Sigma chipset in my WDTV Live with respect to the two sample streams here:

Panasonic Demo – Summer in Alaska
Panasonic Demo – Nature

[

Both can be downloaded from this page :

http://www.demo-world.eu/trailers/high-definition-trailers.php

]

I personally tried both of them on my WDTV Live, and there seems to be quite a number of dropped frames / stuttering in general, and this is accentuated in some particular places (Nature clip : 1:46 – 2:00 ; Summer in Alaska : around 2:05)

These 2 clips are Blu-Ray spec compliant. I didn’t find anything amiss in the Mediainfo reports. I definitely know it is not a frame rate issue since other 29.97 fps files play fine on the same player.

Does Sigma Designs / Western Digital have an idea of what might be going wrong with the deocding process of these files?

If you are interested in exploring further, I can try to make available a direct link to at least one of the files after getting back an e-mail from the concerned firmware engineer.

PS: I got these 2 files from a post on AVS Forums.


#2

Those are 1080p videos, my guess is that you are having the same trouble that other people like me have, that is, video stutters when you try to play a file with somewhat high bitrate from a network share. Try playing the video from USB, or from a media server like Windows Media player, Twonky or TVersity and I bet the videos will play fine.


#3

The 2 files are low bit rate videos, and my observations are based on playback from USB.