LAV Filters - DirectShow Media Splitter and Decoders

[nevcairiel]

Originally Posted by aufkrawall

Here is one Dxtory sample:
http://www36.zippyshare.com/v/60688661/file.html

There can be also different colorspaces and compression.

It doesn't seem like the decoder likes this file, i get a lot of errors and no image.
It appears it uses a variant of the codec not supported yet.

[aufkrawall]

Odd, it shouldn't be too special.
Well, no need to rush with this.
Thanks.

[Shark007]

This VOB sample works properly using LAV splitter 55.2-16 but fails to play properly with 55.3

EDITTED to correct version numbers

[nevcairiel]

Originally Posted by Shark007

This VOB sample works properly using LAV splitter 53.2 but fails to play properly with 53.3

0.53.2 is rather old, and there was no 0.53.3.
If you mean 0.55.2/3, then i'm not sure how this file could've worked before, it seems to suffer from severe timestamping problems, and there were only very small changes from 0.55.2 to 0.55.3

Other splitters just play the video and the audio never comes out, because of a huge difference in timestamps between the two streams. LAV trys to sync the two back, which results in the fast forward of the video..

[Shark007]

sorry for the version confusion.
testing with, LAVFilters-0.55.2-16-gd6e6c1f.exe downloaded from http://xhmikosr.1f0.de/lavfilters/old/ it will play properly. testing with the official 55.3 or the latest version available from xhmikosr.1f0.de it fails. I guess I incorrectly assumed that something that worked earlier but not now was a regression.

[nevcairiel]

The list of changes between 0.55.2-16 and 0.55.3 is even shorter, and nothing even touches code relating to that.
I'm also not sure how you define "play properly", i don't think its possible for both audio and video to play properly in that file.

[Shark007]

I can accept the fact that the file is just broken but that doesnt change the fact that it does play properly (audio/video synced and no FF) using 55.2-16 and has issues in 55.3 and current git builds.

[nevcairiel]

I found the root cause of the problem, and should be able to fix it. I still think its weird that it worked in between those versions, but what can you do.

[Shark007]

please know - your time is appreciated. not just in this moment, but in general.

[DragonQ]

Originally Posted by nevcairiel

I found the root cause of the problem, and should be able to fix it. I still think its weird that it worked in between those versions, but what can you do.

I've had this before - I find some code that is obviously wrong and am bemused that it ever worked.

[nevcairiel]

It wasn't like that at all - it was just a corner case in that particular file which was not handled, and i'm just curious how the file worked before.

[ryrynz]

Originally Posted by ryrynz

Nev, any ETA on that "English[eng]" subtitle selection support?

Originally Posted by nevcairiel

3044ed5471fe - Support parsing OGM locale codes in the format "English[eng]"

Cheers Nev.

[clsid]

Originally Posted by wanezhiling

Hi nev, http://www.mediafire.com/?9htn5tj84ckaotz
Tested on lavf 6d05724, 2 issues:

1. Greenscreen with dxva2 native on Nvidia card @310.70whql
2. wrong field order(should be "top first" not "bottom frst"), seems that only cuvid mode is right.

This file triggers a crash in avfilter when yadif is enabled.

[nevcairiel]

Originally Posted by clsid

This file triggers a crash in avfilter when yadif is enabled.

Works fine in my latest dev builds at least.

[Famille_CB]

Hello,

I use Lav with MPC classic. When I change between "0-255" and "16-235" in the option of LAV filter there' no change.
For information, with ffdshow if I do the same thing it's work.
Some body can help me?

Thank you!

[Asmodian]

Isn't that option only applicable if you use RGB as the output color space from LAV? I assume you are sending YUV data to the renderer as that is normal and preferred (assuming MadVR at least).

[dansrfe]

Anyone know what the problem might be if I'm playing mono audio, have a 5.1 speaker system connected (so I have a center channel for just mono audio), and have "Expand Mono to Stereo" unchecked yet I'm still getting audio out of my front left and right speakers?

I can't find any option in the realtek control panel or windows 7 sound settings which would cause this to happen. I also switched audio renderers from reclock + directsound to just directsound and even WASAPI but got the same result. And I'm not deliberately upmixing anywhere in the chain.

[bugmen0t]

@dansfre
Try unchecking 'output mono sources to both front channels' in the ReClock audio settings at the bottom.

[itsonlyjustincase]

Hi,

I have a question for the experts. I hate asking questions cause i don't want to bother. Sorry in advance.

I'm using the Lav filters with my Serato Video software to play videos. When two videos are load at the same time, it uses a second instance of the lav video decoder (i can see it know thanks to the new lav tray icon). I have Asus UX32VD with Nvidia Geforce 620m 1g which is forced to be used with the program. I'm on WIN7 64 bits with Core i7.

The way the software is developped make it use a lot of system ressources. That is why i have to use the GPU to relax the system.

The problem is that when i use Cuvid and launch two videos at the same time (mixing) i have poor fps (around 15fps for two 1080p H264 videos). This is bad for mixing as the visual aspect look slow. So i tried DXVA2(copy-back) and it's weird cause i could get amazing fps (around 45 fps for two 1080p H264 videos), lower CPU usage (more than 30% lower than usage with Cuvid). The strange thing is that when i look at the GPU graphs (GPU-z) i see no difference between usage of cuvid or dxva2(copy-back). In fact the video load, gpu load, memory load, are about the same. So i would like to understand why ?

And to come to the main problem, using dxva2cb is fine when i launch a video, but as soon as i open a second one it make my software crash most of the time. Some time it's after the third video launched.

I hope you'll be able to help me

[mastan]

Originally Posted by itsonlyjustincase

The way the software is developped make it use a lot of system ressources. That is why i have to use the GPU to relax the system.

Then why don't you use QuickSync? It should be available on your system.