Quote:
Originally Posted by Jack@Micca 
HokeySmoke,
I am referring to the 2D test files in the test file pack that was linked to earlier in this thread.
Eagle_2,
It would appear that we are seeing something different from what you are seeing. Have you tried viewing with the moving bars test files? Having a common set of files is really helpful. The judder that we are seeing are not consistent in terms of severity or frequency, falling into a range, rather than a specific repeating phenomenon. Some of it is slight - seems as if the frame count is correct, just the spacing between the frames gets out of sync for a fraction of a second. Some of it is more severe, looking as if an extra frame is added, giving the impression that the bar is moving backwards for a frame. The slight judder does happen more often than the severe type.
While viewing normal movie material, even an attentive observer might not notice the "slight" type of judder, even though this happens more frequent than once every 41/42 seconds based on our observation. The more noticeable kind of judder could be more easily seen by an attentive observer.
What's curious is that 23.976 and 24fps both playback with the slight judder ever few seconds when the player switches to 24p output. This does not match the observations of other sin this thread.
However, if the player remains in 60p mode, the 24fps plays back smoothly when the player remains in 60p, but the 23.976 still suffers from the judder. This matches better with what others have observed. So it would be helpful if we receive some additional clarification on what mode the player is in when judder is noticed.
HokeySmoke,
I am referring to the 2D test files in the test file pack that was linked to earlier in this thread.
Eagle_2,
It would appear that we are seeing something different from what you are seeing. Have you tried viewing with the moving bars test files? Having a common set of files is really helpful. The judder that we are seeing are not consistent in terms of severity or frequency, falling into a range, rather than a specific repeating phenomenon. Some of it is slight - seems as if the frame count is correct, just the spacing between the frames gets out of sync for a fraction of a second. Some of it is more severe, looking as if an extra frame is added, giving the impression that the bar is moving backwards for a frame. The slight judder does happen more often than the severe type.
While viewing normal movie material, even an attentive observer might not notice the "slight" type of judder, even though this happens more frequent than once every 41/42 seconds based on our observation. The more noticeable kind of judder could be more easily seen by an attentive observer.
What's curious is that 23.976 and 24fps both playback with the slight judder ever few seconds when the player switches to 24p output. This does not match the observations of other sin this thread.
However, if the player remains in 60p mode, the 24fps plays back smoothly when the player remains in 60p, but the 23.976 still suffers from the judder. This matches better with what others have observed. So it would be helpful if we receive some additional clarification on what mode the player is in when judder is noticed.
Jack, there is no way to have different spacings between frames. The frame rate must be constant coming from the source or your display will need to re-sync causing loss of picture. If you are seeing it change every few seconds, then somewhere frames are being lost or added. This could be in the display or the source. Make sure you are using the right file when you do the test (the ones with "23.976" in their name are the appropriate ones for this issue). Also, when I tested these I used a defragmented NTFS formatted hard drive connected directly to a HD900A. Doing so, I see no issue other than the 42 second frame drop.
