karl123 wrote:Stuttering of transcoded HD
Just like the Sony Bravia users, I see stuttering of some transcoded HD material on my Philips TV, e.g. 1080p and orginal m2ts format.
Did some tests.
karl123 wrote:Sound disappears after a short time
On some transcoded HD movies the sound disappears after a small period (e.g. a minute).
Have a Core2Duo E8400 with 2 CPU cores system with 2 GB RAM and WindowsXP. Network is 100Mbs cabled and PC has gigabit connection.
My first test for stuttering is a 1080p ts file that is transcoded to a PS stream (MEncoder).Observations:
While transcoding with visible stuttering the PC uses 1GB RAM, below 25% network utilization and over 95% CPU on both CPU's.
When lowering the video quality in common transcoding settings then the stuttering disappears.
Unfortunately, while disappering stuttering some video artifacts (blocks in rendering) might occur.
Apparently the limiting factor seems to be the cpu load and this is viewed with various video material.
If the CPU load of both processors well exceeds 90-95% then I see a stuttering. Also after such stutter the sound is lost and does not appear again.Solution
Cause of stuttering and loosing sound is propably the very high CPU load on all processors.
Usually the load is below e.g. 80% and everything plays well. However, with some material the load increases above 95%.
Experiment with settings e.g. video quality and have a look at Windows Task Manager - Performance to find CPU some safe settings.Yes, the PS3 is playing all material fine, but it has additional 8 cores specialized Cell cores for this work!
Also separate media players run fine due to specialized processing chips.
Compared with PS3 Cell cpu power my "fast" Core2Duo E8400 is a poor mans solution! But for many cases it is working well.