[fixed] Video and sound syncronisation (1 Viewer)

[morpheus_xx]

AW: Video and sound syncronisation

ok, I've updated the post above with more requirements and instructions: https://forum.team-mediaportal.com/809536-post52.html

 

[infinite.loop]

Re: AW: Video and sound syncronisation

i-loop, can you post the reported fps after you pressed F1 and F2 (enable render stats+ max fps), just for info. not using any external tools

aahhh, those are they keys in MP2, was trying the one from MP1.

Attched 2 screenshots to my initial feedback post.

 

[Albert]

AW: Re: AW: Video and sound syncronisation

i-loop, can you post the reported fps after you pressed F1 and F2 (enable render stats+ max fps), just for info. not using any external tools

aahhh, those are they keys in MP2, was trying the one from MP1.

Attched 2 screenshots to my initial feedback post.

Only as a short note: This thread is about a debug build of a special plugin which uses those keys. Those keys aren't "official debug keys" for MP2 or something. Morpheus has built that debug version to find out what's the problem with our flashing frames in video player.

 

[infinite.loop]

Re: AW: Re: AW: Video and sound syncronisation

i-loop, can you post the reported fps after you pressed F1 and F2 (enable render stats+ max fps), just for info. not using any external tools

aahhh, those are they keys in MP2, was trying the one from MP1.

Attched 2 screenshots to my initial feedback post.

Only as a short note: This thread is about a debug build of a special plugin which uses those keys. Those keys aren't "official debug keys" for MP2 or something. Morpheus has built that debug version to find out what's the problem with our flashing frames in video player.

So what are the offical keys?

also ! as in MP1?

 

[morpheus_xx]

I think frame rendering statistics won't be a core feature ;-) It is a way to debug wrong outputs.

But I think it would be good if there were some interfaces to allow plugins to do this.

Sent from my GT-I9000 using Tapatalk

 

[infinite.loop]

I think frame rendering statistics won't be a core feature ;-) It is a way to debug wrong outputs.

But I think it would be good if there were some interfaces to allow plugins to do this.

imo. it would be good to have the same stats/graphs available as in MP1 for proper playback quality research. That is usually what you tinker with the most when trying to get the perfect setup.

 

[MJGraf]

Re: AW: Video and sound syncronisation

Hi Morpheus,

just back from holidays and still struggling with time in real life. So I could only test one video on my laptop (vaio tt) so far. I'm not quite sure what exactly you're looking for so I just tested one video as per your explanation:

OS: W7 32bit - all SP/hotfixes
CPU (type/freq): Intel Mobile Core2Duo U 9400 (2x1,4GHz)
RAM size: 4GB
Graphics (type, size of memory, screen resolution, refresh rate, fullscreen y/n): Mobile Intel 4 series, i think it's shared memory?!?, 1366x768, 40hz, fullscreen:yes)
MP2-Skin: default - did not change anything
FPS (max. fps enabled, fullscreen) in home screen, idle: about 100fps

than what type of video you played
Video format/Container: MPG-TS
FPS: 25
Resolution: 720x576 (tv recording)
A/V synch: (see below)
Codec: Microsoft / Win7 inbuilt
.
A/V synch: Video and Audio are in synch in both cases, with and without max fps enabled. But I had this problem when using your tv client. Does it help to reproduce this as well?!?

Stuttering / Flickering:
When I play the video without max fps enabled, I get heavy stuttering and flickering. The stuttering seems like old frames are rendered. The flickering seems to result from black frames being rendered?!? I get 40fps here
When I play the video with max fps enabled, the flickering is gone, but there is still some stuttering. Much less than without max fps, but still visible. I get 50fps here.

Please let me know exactly what you need from me to nail this down. I'm happy to help and can test other videos and / or other computers (my htpc is a lot more "beefy" than my laptop)

Michael

 

[morpheus_xx]

Hmm your results make me really wondering.

When a video is played the render process is synced to the videoplayer: you should get the same fps as the active video. This should be also the case in maxfps mode.

Currently I need to think about what to check next. I could also be, that the issue is not about the video presenter but the skinengine rendering itself.

Could you also try a build from the current dev-
branch? (I have no binaries, this would require a self compile...)

Sent from my GT-I9000 using Tapatalk

 

[morpheus_xx]

AW: Video and sound syncronisation

some more thoughts:
- "max fps" uses "Present.ForceImmediate": this means the present does not take the screen refresh into account (v-blank) and presents when it's called. that's why you get 50 fps (25 fps clip, DXVA frame doubling to 50 fps).
- "normal mode" uses "Present.None": this means, the presenting is matched to the screen refresh. now we have 50 fps incoming, but your screen is using a 40 Hz refresh rate (really strange value, btw). This could explain why you get issues in rendering (black frames etc).

Maybe we could use "ForceImmediate" in case when the video fps is higher that the screen refresh rate?

Can you please post screenshots from both modes (normal, max fps)?

I really would like to know, how the playback is looking with a "dev branch" build (unfortunately there are no render stats and switches). On low end system it could be even smoother than my EVR_v2 branch (at least on my HTPC). I will create a build and upload it as well.

 

[MJGraf]

Hi Morpheus,
I can compile the dev branch. No worries. Just need to find some time. Will report back...
Michael