Audio not syncing properly with video

[Snappy Phoenix]

I downloaded a movie that I had purchased but while watching it I noticed that the audio is way out of sync in relation to the video.

The video plays then after 3 or 4 seconds the corresponding audio is played.

So I installed ReClock and did the below settings but that didn't change a thing

please help me I'm a n00bie

[videoh]

Originally Posted by berryracer

I downloaded a movie

That's a rule 6 violation.

[Snappy Phoenix]

Why is that? I bought it

[huhn]

Originally Posted by berryracer

Why is that? I bought it

than you should ask them why this is the case.

audio sync issue are usually a problem with the file. reclock is not made to fix audio sync issue.

[Ceremony]

if it desyncs with all players, its the file. if the audio is async constantly by a fixed number, you can fix it by remuxing it (e.g. mkvtoolnix). if its sync offset differs throughout, theres pretty much no hope to fix it.

so try vlc and see if that plays it fine. if it does, your filter chain might have some kind of misconfiguration.

P.S. increase sound pre-buffer to ~200ms or more to fix any drops in audio. not the desync culprit though!

[videoh]

Originally Posted by berryracer

Why is that? I bought it

Your original post did not state that you purchased it. You edited your post after I pointed out the violation.

[Snappy Phoenix]

Originally Posted by huhn

than you should ask them why this is the case.

audio sync issue are usually a problem with the file. reclock is not made to fix audio sync issue.

Ah ok, it's an old movie maybe that's why

yes the problem is with all players

I thought Re-Clock was to ensure synsc between Audio / Video is correct, so what is it for in that case?

[Snappy Phoenix]

Originally Posted by videoh

Your original post did not state that you purchased it. You edited your post after I pointed out the violation.

Yeah I did edit it to make it obvious so that jerks like you who offer no help but just want to pin point such stuff and post as if they were a moderator would get the point.

[huhn]

Originally Posted by berryracer

Ah ok, it's an old movie maybe that's why

yes the problem is with all players

I thought Re-Clock was to ensure synsc between Audio / Video is correct, so what is it for in that case?

reclock resamples audio to sync it to the video just a another way to avoid frame drop syncs. every modern video renderer drops or repeat a frame to sync if needed. but in the end the sync is stable and no extra program is needed for sync operations.

and calm down i didn't answered this thread too because "downloaded file".
if it sounds fishy i don't help.
no need to react like this.

[Snappy Phoenix]

Originally Posted by huhn

reclock resamples audio to sync it to the video just a another way to avoid frame drop syncs. every modern video renderer drops or repeat a frame to sync if needed. but in the end the sync is stable and no extra program is needed for sync operations.

and calm down i didn't answered this thread too because "downloaded file".
if it sounds fishy i don't help.
no need to react like this.

My AMD Radeon R9 M290X has an option "Smooth Playback" which ensures no dropped frames, I don't now how effective is that but I never felt that ReClock did anything extra when I use SVP

[huhn]

Originally Posted by berryracer

My AMD Radeon R9 M290X has an option "Smooth Playback" which ensures no dropped frames, I don't now how effective is that but I never felt that ReClock did anything extra when I use SVP

just use madVR press control + j and look at the stats to get a better understanding.

just some extra numbers.

99.9 of all movie BD are 23p that's 24000/1001 and SVP would create 59p out of it (60000/1001)

usually only TVs can do 23p,59p and stuff like this.

so that means with a normal Monitor you get a repeated frame sooner or later even SVP can't change this.

the next problem is that a monitor at 60 hz is not running at 60 hz it is running at something close same for the audio clock.
so video/audio runs out of sync. of cause same for TVs.

you may not notice it but this is how things work.
an example screen:
http://abload.de/img/clock06zil.png

[Snappy Phoenix]

Originally Posted by huhn

just use madVR press control + j and look at the stats to get a better understanding.

just some extra numbers.

99.9 of all movie BD are 23p that's 24000/1001 and SVP would create 59p out of it (60000/1001)

usually only TVs can do 23p,59p and stuff like this.

so that means with a normal Monitor you get a repeated frame sooner or later even SVP can't change this.

the next problem is that a monitor at 60 hz is not running at 60 hz it is running at something close same for the audio clock.
so video/audio runs out of sync. of cause same for TVs.

you may not notice it but this is how things work.
an example screen:
http://abload.de/img/clock06zil.png

Thanks a lot bro

This is my madVR info as you suggested, I don't know what to make of it though:



so if I do reinstall Re-Clock, are settings ok or shall I change something?

[nussman]

Originally Posted by huhn

the next problem is that a monitor at 60 hz is not running at 60 hz it is running at something close same for the audio clock.
so video/audio runs out of sync. of cause same for TVs.

A/V Sync issue because TV/Monitor is not running @60hz?
Never heard or noticed anything like that.

[huhn]

Originally Posted by nussman

A/V Sync issue because TV/Monitor is not running @60hz?
Never heard or noticed anything like that.

you don't get into issue because the video renderer is dropping a frame or repeating a frame to fix that. the point is you can see that easily see the repeated or dropped frame.

look at the screen from berryracer this gpu runs his monitor with 59.99294 hz not 60 hz.

my screens show 120.00388 hz not 120 hz

@berryracer

I don't use reclock and I don't know if it works fine with SVP.
I just wanted you to say what it does and for what it exists.

[foxyshadis]

Are you playing with MPC? In the Audio options, it has an Audio Time Shift (ms) options. If it's a constant offset through the whole movie, you can use that, or just remux it properly. It'll probably take a few tries to get it right, so find the numbers with the player. If it's not constant, you'll have to resample and re-encode the audio.

Make sure you're using LAV filters or something equally up-to-date, some crappy source filters won't offset the audio even if the stream signals an offset.

[Snappy Phoenix]

Originally Posted by foxyshadis

Are you playing with MPC? In the Audio options, it has an Audio Time Shift (ms) options. If it's a constant offset through the whole movie, you can use that, or just remux it properly. It'll probably take a few tries to get it right, so find the numbers with the player. If it's not constant, you'll have to resample and re-encode the audio.

Make sure you're using LAV filters or something equally up-to-date, some crappy source filters won't offset the audio even if the stream signals an offset.

no it was just that movie so I'm gonna forget it

thanks for all your help guys