LAV Filters - DirectShow Media Splitter and Decoders

[petran79]

QuickSync works fine in 64-bit, something must be wrong in your system.


thats what I've been wondering about.
though I seriously think that Intel forgot to add support for 64-bit version Quicksync decoding in 2nd gen Intel 3000 drivers.

they were never known for their driver quality.

[STaRGaZeR]

The Git repository "forgets" some intermediate Git revisions in the ffmpeg repository because they are not tagged, so rolling back to some arbitrary point in the past only really works for the release tags of ffmpeg (i made one tag for every lav release)

I'm sure git has a lot of amazing capabilities, but it's the most counter-intuitive piece of software I've ever dealt with, as a beginner.

Anyway, the problem I was going to track magically disappeared when updating to the lastest version, so no need to mess with git :p

[nevcairiel]

though I seriously think that Intel forgot to add support for 64-bit version Quicksync decoding in 2nd gen Intel 3000 drivers.


While the drivers are not perfect, I have a HD3000 SNB and it works just fine.

I'm sure git has a lot of amazing capabilities, but it's the most counter-intuitive piece of software I've ever dealt with, as a beginner.

Its my fault really because i'm messing with the history in that repository everytime i update ffmpeg, because i don't want a million tags for every small update, and stuff.
Its a compromise i accepted. ;)

[Keiyakusha]

Hmm, usually I make 1st track default, but this time I wanted track3 to be default. Is there any reason why LAV 0.57 still plays 1st track? Even if I mark track3 default+forced (https://dl.dropboxusercontent.com/u/110558786/DesktopScreens/A38A96BE.png)...
Did I misconfigured something? Tried some old haali (too lazy to hunt for the newest/beta/hacked whatever version) - it selects 3rd track.
UPD: it's probably obvious but I'm talking about mkv :P
UPD2: it does works for audio (https://dl.dropboxusercontent.com/u/110558786/DesktopScreens/422341F2.png) though

[nevcairiel]

Probably just not implemented for video tracks, as different video tracks is not really a common thing.

[pie]

I have a bit of a strange problem, which is somewhat hard to replicate. When playing music using WMP, it will crash if playing a particular set of songs, and only if that set of songs is played; playing each file individually is fine, and so is playing subsets of those songs. By crash, I mean that it will simply quit with no warning or error.

In this set, there are 19 songs, of which 15 are MP3s, and the rest are AAC/mp4 files, with the MP3s being played before the AAC files. I believe that LAV is not used for playing the MP3s, but that the AAC files do use LAV splitter/decoder.

The crash will only occur after playing all songs, and occurs when playing the last AAC file, about 1-2 seconds in.

This only started to happen with recent versions, although I can't exactly pinpoint which version this started happening (maybe around the time of adding ordered chapters support?).

[Keiyakusha]

Probably just not implemented for video tracks, as different video tracks is not really a common thing.

Just checked avsplitter - it also selects the right track... is it hard to implement? Maybe just copypasted code from audio stream selection will work after little adjustments? :rolleyes:
Edit: potplayer's internal splitter selects right track too... seems only LAV is behind the rest of the competition ^^

[nevcairiel]

Its not hard, a simply check to select the track with the default flag is easy. Not sure how forced on video would make much sense, so leaving that out for now. :p

[petran79]

While the drivers are not perfect, I have a HD3000 SNB and it works just fine.


Having two gpus messes up the system...

I have a laptop with an optimus card (nvidia gt555m and intel 3000)

Lav 64 detects cuvid (nvidia gpu light flashes)
It also detects dvxa through intel card. Nvidia light doesnt flash. So lav detects the card but quicksync codec isnt detected

I'll also try the 64 ffdshow tryouts.
I installed lav through klite, so i'll try a clean installation of lav this time.
Not a big deal really.

[Nekomata]

Having two gpus messes up the system...

I have a laptop with an optimus card (nvidia gt555m and intel 3000)

Lav 64 detects cuvid (nvidia gpu light flashes)
It also detects dvxa through intel card. Nvidia light doesnt flash. So lav detects the card but quicksync codec isnt detected

I'll also try the 64 ffdshow tryouts.
I installed lav through klite, so i'll try a clean installation of lav this time.
Not a big deal really.

exactly same configuration here: gt555m and intel 3000, lg laptop
what i have found is using nvidia control panel to set potplayer (one of few players you can switch the graphics) and use nvidia on it, it works correctly with cuda and lav filter

[mindbomb]

question about renderer deinterlacing:
you can't use xy vsfilter and have renderer deinterlacing?

[clsid]

I don't think it passes on the interlaced flag in output mediatype, so HW deint won't work with (xy-)vsfilter.

[nevcairiel]

No it doesn't. Some time ago i was thinking looking into that and providing a patch, as it would probably be a quick fix, but i never got around to it and then lost track :)

[cyberbeing]

Yes, I remember that that "some time ago" in October 2012... :p

But as mentioned in my PM to you a couple months ago, we are still interested you creating such a VideoInfo2 + bitstream interlace flag support patch for xy-VSFilter if you ever find time.

[itsonlyjustincase]

Does someone have the knowledge to add : Resize>resize to screen resolution option to Lav video decoder ?

[nevcairiel]

Does someone have the knowledge to add : Resize>resize to screen resolution option to Lav video decoder ?

LAV will not get such options, its a decoder, not a post-processor.

[wanezhiling]

ArcSoft TotalMedia Theatre 6.0.1.123 released.

dtsdecoderdll.dll v1.1.0.9 !!! :D

[itsonlyjustincase]

LAV will not get such options, its a decoder, not a post-processor.

Okay :). Do you know if it is possible as ffdshow uses IntelQS to have ffdshow using Cuvid ?

[huhn]

how about that: use ffdshow as post processor for lavfilter?

[Vyral]

how about that: use ffdshow as post processor for lavfilter?
I already tried that. The main problem is that ffdshow raw filter does not support 10bits input.

[ryrynz]

Yup, so either suffer from the 8bit conversion or use pixel shaders.

[itsonlyjustincase]

integrate dxva2n, dxva2cb and cuvid to ffdshow would be excellent

[ryrynz]

ffdshow is dead, nobody is going to work further on it's core functionality any time soon if ever. Minor fixes and tweaks along with Quicksync updates are all it's going to get.

[clsid]

Plus it would not bring any functionality that is better than what LAV already gives right now.

[itsonlyjustincase]

Plus it would not bring any functionality that is better than what LAV already gives right now.

I understand. It is just that lav is just a decoder without post processing. Lav is excellent. In my case, with my soft sometimes it gives weird aspect ratio with videos with resolution 640x360. I would have liked the option to resize to screen resolution that ffdshow has cause it would have permit to avoid those problems. That is why i was asking about it. But i'm aware that as 95% of the players that use LAV work well, there is little chance that anyone would develop more

[paradoxical]

I understand. It is just that lav is just a decoder without post processing. Lav is excellent. In my case, with my soft sometimes it gives weird aspect ratio with videos with resolution 640x360. I would have liked the option to resize to screen resolution that ffdshow has cause it would have permit to avoid those problems. That is why i was asking about it. But i'm aware that as 95% of the players that use LAV work well, there is little chance that anyone would develop more

Does your player not allow you to override the aspect ratio to fix that? I would think that remuxing your file or using an AR override of the player would be much simpler than expecting someone to change ffdshow to add the functionality you want.

[clsid]

It is possible to use LAV for decoding and ffdshow for post-processing. Simply enable "raw video" in ffdshow video decoder. When using an advanced player like MPC-HC, the 'manual' ffdshow raw video filter can be used instead, which has the advantage that it won't interfere with other DirectShow apps.
In the future LAV might get an option to load ffdshow raw video filter into the graph (for a defined list of apps).

LAV Video decoder has an option that controls which AR it should use. The one from the container, or the one from the video bitstream. Changing that option might fix the AR for those files (and break it for others that are now working correctly). Best solution is to remux those files and put set a correct AR in the container.

MPC-HC has Pan&Scan settings to resize the video during playback. There are several shortcuts (using numeric keypad) that allow you to easily resize/flip/rotate the video.

[itsonlyjustincase]

Does your player not allow you to override the aspect ratio to fix that? I would think that remuxing your file or using an AR override of the player would be much simpler than expecting someone to change ffdshow to add the functionality you want.

:) For sure if my player did that i wouldn't have asked such a question :)

[itsonlyjustincase]

It is possible to use LAV for decoding and ffdshow for post-processing. Simply enable "raw video" in ffdshow video decoder. When using an advanced player like MPC-HC, the 'manual' ffdshow raw video filter can be used instead, which has the advantage that it won't interfere with other DirectShow apps.
In the future LAV might get an option to load ffdshow raw video filter into the graph (for a defined list of apps).

LAV Video decoder has an option that controls which AR it should use. The one from the container, or the one from the video bitstream. Changing that option might fix the AR for those files (and break it for others that are now working correctly). Best solution is to remux those files and put set a correct AR in the container.

MPC-HC has Pan&Scan settings to resize the video during playback. There are several shortcuts (using numeric keypad) that allow you to easily resize/flip/rotate the video.

I'm using video DJ soft that doesn't allow that unfortunately

[paradoxical]

I'm using video DJ soft that doesn't allow that unfortunately

Then remux the files in a way that your player won't screw them up or get something less broken to use? :confused: It sounds like you spend way too much effort trying to work around all the brokenness of that software.

[itsonlyjustincase]

Then remux the files in a way that your player won't screw them up or get something less broken to use? :confused: It sounds like you spend way too much effort trying to work around all the brokenness of that software.

What you're saying is so true. It's because appart from that this soft is the best in audio. So i really wanted to be able no to have to use different softwares when i'm mixing. Plus i spent money to buy video clips. But you're definitely right

[paradoxical]

What you're saying is so true. It's because appart from that this soft is the best in audio. So i really wanted to be able no to have to use different softwares when i'm mixing. Plus i spent money to buy video clips. But you're definitely right

That's a shame. All I can say is try to remux your files and hope that you can have container level AR signaling that the player will honor better.

[itsonlyjustincase]

The weird thing is that it's only the old school videos that have this problem. The recents one don't.

How to remux ? What do i need to do ? Is there a soft to do it using CUDA or QS so that it can be done quickly ? (i would have something like 500 videos to remux)

[clsid]

Remuxing means only changing/adjusting the container. The audio and video remain untouched. So it is generally a fast process.

This should be helpful:
http://forum.videohelp.com/threads/301849-Change-Aspect-Ratio-of-mp4-without-re-encoding

But you also seem to have ignored a solution I gave before. The option "Use stream aspect ratio" in LAV Video decoder.

[itsonlyjustincase]

Remuxing means only changing/adjusting the container. The audio and video remain untouched. So it is generally a fast process.

This should be helpful:
http://forum.videohelp.com/threads/301849-Change-Aspect-Ratio-of-mp4-without-re-encoding

But you also seem to have ignored a solution I gave before. The option "Use stream aspect ratio" in LAV Video decoder.

Thank you CLSID.

Sorry for the feedback. I did tried the different options to tick or untick the case "Use stream aspect ratio" of Lav Video but it doesn't change anything.

[paradoxical]

Sorry, maybe I'm wrong, but LAV splitter don't support 4K video ?

Of course it does.

[zallen]

Yes, it`s work with POT Player and don`t with KMPlayer. Why then only internal splitter with LAV Video Decoder for KMP. :confused:

[Mercury_22]

EDIT : never-mind My bad, somehow my PATH variable got modified

[cyberbeing]

@nevcairiel

GraphStudioNext "Time Measure Filter" movie resolution incorrect (http://bugs.madshi.net/view.php?id=71)
LAV Splitter (720p24) -> LAV Video -> Time Measure -> madVR: problem
LAV Splitter (720p24) -> ffdshow -> Time Measure -> madVR: ok
LAV Splitter (720p24) -> CoreAVC -> Time Measure -> madVR: ok
LAV Splitter (720p24) -> Time Measure -> madVR (internal decoder): ok

Looks like a problem in LAV Video Decoder to me?

[madshi]

Don't know for a fact that it's a LAV Video Decoder issue, but at least it seems to be the only decoder triggering this problem.

[nevcairiel]

This seems to happen because of the extended format flags in dwControlFlags, it causes an extra reconnect between the filters which doesn't go too well, because the time measure thing implements video buffer handling somehow ... half. It requests a stride, but not like a renderer would.
Neither of the other decoders support those flags.

[cyberbeing]

So is this something you would fix in LAV Video, or should an issue be opened with Graph Studio Next (http://code.google.com/p/graph-studio-next/issues/entry) instead?

[nevcairiel]

I can probably somehow fix it. But don't expect results too soon, i'm quite busy with other things right now.

[huhn]

is it normal that mpeg2 dxva didn't work with 6770 and 5770 cards ? it works with the mpc hc mpeg2 dxva decoder.

is the mpc hc dxva decoder dxva 1?

[paradoxical]

Those should work since they are UVD 2 which offers full bitstream decoding. The only cards not supported for MPEG-2 decoding by LAV are those that only did partial acceleration with UVD/UVD+. What OS are you running? Because if it's XP that would be your issue since you wouldn't have DXVA2.

[huhn]

windows 7 x64.

h264 works fine so my setup should be fine

[nevcairiel]

MPEG-2 DXVA is broken on pre-7000 series AMD cards (or was it pre-6000?), and if MPC-HC decoder is telling you anything else, its lying. :)
AMD actually disabled MPEG-2 on those cards in recent drivers, so the driver didn't offer you the mode.

There is no special check in LAV to disable it on older AMD cards, it will simply use it when the driver offers it.

[dukey]

You any idea why i get green screens between title changes with bluray ? Only seems to effect my ati card

[huhn]

even madvr reports dxva 2 back when i use the mpc hc mpeg 2 decoder.

dxva checker report decoding device: modeMPEG2_IDCT with Microsoft DTV-DVD Video Decoder [DXVA 1/2][]MPEG2 1920x1080]

my card enters a power state with 500 mhz (from max 850) and this can't be changed even when i run a pc game so it should use dxva.

i'm using 13.5 driver. is there a way to make 100 % sure dxva is used?

[nevcairiel]

IDCT is not the right device, you need DXVA2_ModeMPEG2_VLD for LAV DXVA for MPEG-2.
The MS decoder can use the IDCT device, but i don't think the MPC decoder can.