[confirm] sometimes stuttering with RC3 (1 Viewer)

[wolfi_b]

Hi,

sometimes i get stuttering with RC3. It occurs approximately every 10-30 minutes. When it occurs than the framerate drops to 30-40 fps. After a few seconds the problem disappears on its own. It occurs on various SD channels and HD channels. I don't think it is caused by the signal or by TSwriter because when i jump back in timeshift than it doesn't occur a second time.

Logs are attached, i have left debug mode when the stuttering disappeared so the problem should be visible (i hope) on the end of the logs.

best regards, Wolfgang

 

[robyf]

Have you tried other codecs? There is no best codec in my opinion, it depends from the specific hardware and software configuration.

I suggest you to try with microsoft codec, I find it to be the best under windows 7.

 

[Andrew H]

I get these as well and am particularlly interested in your findings because our systems are very similar. I see you used Cyberlink PDVD10 as am I (recent change) on the HD4200 video chipset. I loaded CCC 10.5 yesterday (after unloading 10.4 first) and it sure seems that the dropped frames are less frequent - but I'll be checking this in the next few days. What you say is stuttering is what I say is dropped frames as in the following entry (first of 13 in your evr.log):

26-05-2010 21:33:35.330 [a88]Dropping frame, behind 0.17 ms, last sleep time 0.00 ms.​

Yet the TSReader log has a patch of these which are logged before the first frame is dropped:

26-05-2010 21:33:24.952 [acc]Vid/Ref : 1.696, Late B-frame(01), Compensated = 1.514 ( 0.667 A/V buffers=00/01), Clk : 0.846917, State 2​

I've not quite figured the relationship between the TSReader and the EVR... seems the TSReader is pre-analyzing and the EVR is rendering the result.

 

[wolfi_b]

AW: sometimes stuttering with RC3

Hi robyf,

i have tried different Codecs now. MS Codecs are doing no good job in my case (sometimes very bad deinterlacing). I have now reverted to PowerDVD9 Codecs but stuttering is still visible from time to time. The PowerDVD9 Codecs have always worked very well in my case since many MePo versions. In MeMo 1.1 BETA i did not have any stuttering with same hardware and same codecs. Thats why i think it is TSreader related.

best regards,
Wolfgang

 

[robyf]

I will try cyberlink codec and report back if I can reproduce the problem.

 

[Andrew H]

I wonder if the broadcast standards are driving issue with the TSReader. I'm trying to understand all of the analysis of late frames and why MP is analyzing this, what it does with the info and whether the interpretation of frames is universal or has various meaning across broadcast standards (ATSC, PAL, DVB-S, DVB-C, etc.).

I too have found the PDVD codecs work best (for the time being) over the MS-DTV ones on my Win 7 32-bit Premium system. I recently built this system and was trying to NOT have to reuse the N9500GT I'd purchased when MP 1.0.1 invoked the texture-writing "fix" to better assist ATi users... thinking that is all better now I thought the HD4200 would provide plenty o' GPU capability... although, it would serve me to pup in the N9500GT and see if fewer frames are dropped. HOW does the EVR.log know when a frame is dropped, or is it dropping them based on the analysys if TSReader???

 

[tourettes]

HOW does the EVR.log know when a frame is dropped, or is it dropping them based on the analysys if TSReader???

EVR presenter simply drops a frame when it is late. It compares the video frame timestamp to the current reference clock time.

 

[Andrew H]

Thanks Tourettes for the reply - I was trying to understand the relationship between TSReader and EVR.log