LAV Filters - DirectShow Media Splitter and Decoders

[ryrynz]

Originally Posted by nevcairiel

Back to working on my subtitle interface and dvd video support..

*Hangs up DND sign*.

[dukey]

What are you doing with subs nev ?

[Groucho2004]

Originally Posted by Pat357

Now that I think about it : AVSMeter also creates a buffer...

What buffer?

[Keiyakusha]

Originally Posted by Groucho2004

What buffer?

It usually starts displaying something only after some number of processed frames, like 30-60 frames. This is not due to buffer? Oo

[Groucho2004]

Originally Posted by Keiyakusha

It usually starts displaying something only after some number of processed frames, like 30-60 frames. This is not due to buffer? Oo

No, it just has to read a certain number of frames at the beginning in order to display meaningful values.

[Soukyuu]

Originally Posted by Keiyakusha

EDIT: Maximum bit rate : 100 Mbps omg, who ever created this he need to rethink his encoding approach. if you DO use hardware decoding it may be hardware problem as I expected because this high bitrate exactly at the time you saying and looking at the picture its pretty obvious why such bitrate is there. Bit for hardware decoders this may be too much.
EDIT2: this is not good. mpc-hc uses software decoder when you switch probably.

Uhm. The encoder was me XD
The setting I used are in my post, I guess the crf just makes it jump to that insane bitrate trying to preserve the quality. The file is not meant for sharing, so as long as I get the best quality playable, I'm fine with the space it uses.

I am a newbie when it comes to encoding though, I guess I should somehow limit the bitrate additionally to specifying the crf?

Originally Posted by nevcairiel

I cannot detect any problems with that file, seems to decode just fine here.
May be caused by the extremely high bitrate in that section. On my system at least it works fine with both software and hardware decoding, but i have pretty good and recent hardware which can deal with high-bitrate clips like this.

I have a Phenom II X4@3.4GHz an a nVidia 260GTX. What I don't understand is, if it's my hardware being too weak for this bitrate, why is the usage not spiking to 100% when it stutters?

The same file playing fine with same settings when LAV is off is what makes me think it must have something to do with LAV...

edit: after further testing, it looks like this:
no hardware acceleration - no stuttering - ~70% cpu peak usage
nVidia CUVID - stuttering - ~26% GPU load, 72% Video engine load according to GPU-Z
DXVA2 (copyback) - stuttering - ~26% GPU load, 100% Video engine load
DXVA2 (native) - no stuttering - ~26% GPU load, 0% Video engine load

So it seems nVidia's decoder screws up, same for the copyback version of DXVA2 (whatever that means)

edit2: added load numbers

[nevcairiel]

Its not so much that the GPU screws up, the 260GTX just has one of the oldest hardware decoders, which is slower then for example the one in my card. 100mbit H.264 is a pretty high bandwidth, so its completely possible that it just doesn't support that much.

PS:
I think DXVA2 Native didnt work in your setup and it used software decoding instead, otherwise there would be more then 0% load.

[Soukyuu]

So for some reason, my post was blank, I guess maintenance ate it.

I tested the video with vdpau on linux and it's the same over there. What I still don't understand is why it is stuttering if video engine load is not maxed out when using CUVID.

My only guess is there might be a bandwidth issue uploading the frames to the card, my mainboard is kinda gimpy.

Anyway, thanks for helping me to clear it up, I guess I won't be using hardware acceleration since the CPU is doing a better job on this.

[st-fixer]

Hi. Im trying to use LAVSplitter.ax without registration in system, through LoadLibrary(); / GetProcAddress(); functions, but its working only if I put all libraries into the program folder (with exe). If I put it into subfolder (with LAVSplitter.ax), I've got error - file ****.dll not found.
occurs with:
avcodec-lav-54.dll
avfilter-lav-3.dll
avformat-lav-54.dll
avresample-lav-0.dll
avutil-lav-51.dll
libbluray.dll
swscale-lav-2.dll

same situation with LAVAudio.ax and LAVVideo.ax. all dlls should be in folder with program, even if mail files (*.ax) are in subfolder.

Please, fix it.
Sorry my English,
Tnx.

[SamuriHL]

Nothing to fix AFAIK. It works fine with other players who load it dynamically.

[Snowknight26]

Isn't that a security feature of the DLL search order?

http://support.microsoft.com/kb/2264107

[nevcairiel]

Correct there is nothing to fix. You should read the documentation of LoadLibraryEx, it has a flag to control that.

[st-fixer]

Many thanks, problem solved.

[piccirilli]

Same problem here. LAV video decoder will connect, but not the LAV audio. This maybe the reason for the stuttering. Has anyone else had success using these filters to play Sony's AVCHD videos?

Originally Posted by tormento

I have some trouble playing AVCHD .m2ts from a Sony 1080i cam, i.e. freezing, stuttering or not playing at all.

The same works perfectly with other decoders.

Before uploading huge files, has anybody tested LAV with those kind of files?

Mediainfo report:

PHP Code:

General
ID                                       : 0 (0x0)
Complete name                            : E:\avchd\03-06-2012\20120603090917.m2ts
Format                                   : BDAV
Format/Info                              : Blu-ray Video
File size                                : 24.1 MiB
Duration                                 : 11s 935ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 16.9 Mbps
Maximum Overall bit rate                 : 18.0 Mbps

Video
ID                                       : 4113 (0x1011)
Menu ID                                  : 1 (0x1)
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.0
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 2 frames
Format settings, GOP                     : M=2, N=13
Codec ID                                 : 27
Duration                                 : 11s 880ms
Bit rate mode                            : Variable
Bit rate                                 : 15.8 Mbps
Maximum bit rate                         : 16.0 Mbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 25.000 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Interlaced
Scan order                               : Top Field First
Bits/(Pixel*Frame)                       : 0.305
Stream size                              : 22.4 MiB (93%)

Audio
ID                                       : 4352 (0x1100)
Menu ID                                  : 1 (0x1)
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Mode extension                           : CM (complete main)
Format settings, Endianness              : Big
Codec ID                                 : 129
Duration                                 : 11s 968ms
Bit rate mode                            : Constant
Bit rate                                 : 448 Kbps
Channel(s)                               : 6 channels
Channel positions                        : Front: L C R, Side: L R, LFE
Sampling rate                            : 48.0 KHz
Bit depth                                : 16 bits
Compression mode                         : Lossy
Delay relative to video                  : -80ms
Stream size                              : 655 KiB (3%)

Text
ID                                       : 4608 (0x1200)
Menu ID                                  : 1 (0x1)
Format                                   : PGS
Codec ID                                 : 144
Duration                                 : 11s 375ms
Delay relative to video                  : -80ms 


[Focalom]

Hey

Sorry for asking about something completely different.

I have been setting up my system the last week, but have a problem I can't figure out. I have a 720p plasma screen which accept 1080p24 signals (1080p23). My computer have a core2duo e8500 at stock 3,16ghz and an amd radeon hd 7770 graphic card.

Today i run the latest MPC-HC + the LAV package (splitter, audio and video decoder) and madvr render. I can run every file I throw at it without any frame drops, all the queues in madvr are full. The audio is bitstreaming to the receiver.

To the problem: When playing my bluray movies 1080p24 (rips), and the resolution and framerate in win7 is set to 1080p23 the audio is out of sync. But when I set it to 720p59 the video and audio is in sync. But I guess I must set the framerate to (23.976), and therefore the resolution must be set to 1080p, to get the film run smoothly. I get the same result with both madvr and EVR cust pres.

Any idea how to fix this? I'm sorry if this have been answered many times, but I can't find a solution :-(

[nevcairiel]

Some people asked about Opus decoding, so here it is.

x86: http://files.1f0.de/lavf/LAVFilters-...8-gbacb7df.zip
x64: http://files.1f0.de/lavf/LAVFilters-...acb7df-x64.zip

This version uses the libopus reference decoder for decoding of opus audio streams. LAV Splitter can read .opus files and LAV Audio can decode the streams.

Please let me know if it doesn't work as expected. Initial tests seemed to play just fine.

[Sebastiii]

nice work :P

[SeeMoreDigital]

Opus audio decoding is working fine for me, with Windows Media Player and Media Player Classic

It's just crazy how well Opus sounds at low bit-rates...


Many thank Nev

[Gser]

What about Opus at higher bit rates? Could it be a good alternative for lc-aac?

[SeeMoreDigital]

Originally Posted by Gser

What about Opus at higher bit rates? Could it be a good alternative for lc-aac?

If you start an Opus audio discussion topic within the forums "Audio Encoding" section, anyone who's interested in Opus can talk about it there