LAV Filters - DirectShow Media Splitter and Decoders

[tschi]

Thanks for the new version.

I have a issue when I switch the audio track using shortcut key. Mpchc (snv3052) crash with the message "Unspecified error" ("erreur non spécifiée" in french). It works using a mouse and the menu or key + internal splitter. It works for the subtitles.
It would be great if Lavfsplitter supports internal mpchc shortcut key or includes his own shorcut key (eg: to be use with potplayer ) to switch stream. I use a remote on my htpc and send shortcut in order to control player (I guess I am not the only one ?)
Thank you

[jj666]

Originally Posted by BatKnight

Nev, I've got this Bluray

Certainly isn't the original disk, re-encoded and with lossy audio. How did you mux the file?

I've not experienced any audio stream detecting issues here with the newer version.

Cheers,

-jj-

[nevcairiel]

Originally Posted by tschi

I have a issue when I switch the audio track using shortcut key. Mpchc (snv3052) crash with the message "Unspecified error

The only time i've seen that error was with AC3Filter, get rid of that and it should work.

[tschi]

Originally Posted by nevcairiel

The only time i've seen that error was with AC3Filter, get rid of that and it should work.

You are right, the audio is postprocessed with AC3Filter and decoded by Lavf audio, thank you.
Is it a mpchc issue ? I guess I could do the same processing with ffdshow audio
However, a shortcut key would be pleasant for using lavfsplitter and potplayer

[nevcairiel]

Originally Posted by tschi

However, a shortcut key would be pleasant for using lavfsplitter and potplayer

I have no plans to do this. Its the players responsibility to offer this, you can request it from them.

[tschi]

Ok, I can try to ask them..
But I tried several to subscribe to their korean forum with any sucess
What should I ask ?
Be able to trasmit audio change (and subtitle) commands to an external splitter using a shortcut ?

[hoborg]

Thanks for .24!

I found that LAVS splitter cannot detect VP7 video streams. Here is the sample.

[nevcairiel]

VP7 is not supported, and unless ffmpeg some day supports it, it won't be.

[hoborg]

Originally Posted by nevcairiel

VP7 is not supported, and unless ffmpeg some day supports it, it won't be.

So it is not subtype issue?

even old default OS avi splitter support VP7 in AVI.

[nevcairiel]

Originally Posted by hoborg

even old default OS avi splitter support VP7 in AVI.

But this is a MKV.
What decoder can actually decode them? There isn't much fun in trying without one.

[clsid]

There is just one afaik. The official On2 VP7 decoder.

[hoborg]

Originally Posted by nevcairiel

But this is a MKV.
What decoder can actually decode them? There isn't much fun in trying without one.

Yes, MKV created from original AVI in MKV merge - becouse of simple split.
VP7 can be downlad here.

[nevcairiel]

Originally Posted by hoborg

Yes, MKV created from original AVI in MKV merge - becouse of simple split.
VP7 can be downlad here.

Hey, simpsons.

PS:
I case it wasn't obvious, that means i fixed it. It'll now even try to demux unknown tracks, as long as a FourCC is specified in the container.

[BatKnight]

Originally Posted by nevcairiel

Download http://research.m1stereo.tv/ffmpeg/s...26-1da254b.zip

in the bin directory, there is ffprobe, run that on the file, and see if it detects the stream.

It does, but with 0 channels, strange...
Does this mean that it's a ffmpeg bug? Does MPC-HC internal TS use ffmpeg?

Input #0, mpegts, from 'z:\bdmv\stream\00000.m2ts':
  Duration: 01:21:03.44, start: 599.958311, bitrate: 13992 kb/s
  Program 1
    Stream #0.0[0x1011]: Video: h264 (High), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 23.98 fps, 23.98
 tbr, 90k tbn, 47.95 tbc
    Stream #0.1[0x1100](por): Audio: ac3, 0 channels, s16
    Stream #0.2[0x1101](eng): Audio: dca (DTS), 48000 Hz, 5.1, s16, 1536 kb/s
    Stream #0.3[0x1200](por): Subtitle: pgssub

Bat

[nevcairiel]

Originally Posted by BatKnight

It does, but with 0 channels, strange...
Does this mean that it's a ffmpeg bug? Does MPC-HC internal TS use ffmpeg?

Stream #0.1[0x1100](por): Audio: ac3, 0 channels, s16

I actually have some code that filters out broken streams that get reported with 0 channels, that'll probably have hit this one as well.

I can try to tune the code to try to catch really broken streams .. or just show them and let the users figure out that they don't work.

[nevcairiel]

http://files.1f0.de/lavf/LAVFilters-0.24-4-gfc2264b.zip

@BatKnight
Try this build. I'm not sure how well decoding will work, the file must be broken somehow or channel detection wouldn't fail.

@hoborg:
This should also work with your vp7 file.

[Andy o]

Hi nev, I'm trying out your new splitter, but I've run into a weird issue. It could be the splitter or the way the mkv is muxed. Maybe madVR (.58), but it doesn't happen with the Haali or MPC-HC splitters. I'm getting like 4 dropped frames per second.

The problem is that it happens only with some mkvs (so far some anime muxed from blu-ray) AND the combination of LAVF Splitter (.24) and madVR. If I switch to another video renderer (tried EVR-CP or Sync) then it doesn't happen. Ditto if I switch to another splitter like I said above.

To add to my confusion, I made those mkvs with Makemkv 1.6.7. I remuxed one of them with MKVMerge and the issues were gone.

If it helps I ran the mkvinfo on them. If you have any ideas how to troubleshoot this, I'd be grateful.

Here are the txt files.

File name: mkvinfo.zip File size: 4.18 KB

There's 3 files. makemkv-bad is the one that shows the dropped frames. remux-mkvmerge-good is the same file, remuxed by mkvmerge that plays fine. For comparison I included another one, makemkv-good, also muxed by makemkv 1.6.7, but also runs smoothly. They're all AVC format, 24p.

[nevcairiel]

Can you check if maybe all broken files have TrueHD audio? Thats the only obvious difference in those two, mkvmerge writes different headers for TrueHD then MakeMKV does, and your makemkv-good has DTS audio.

Also, which audio decoder are you using? Can you try again with my LAV Audio Decoder?

Another thing, when using EVR-CP, please make sure that "Frame Time Correction" is OFF (press C), and see if it then drops frames as well - or if i was off all the time.

[Andy o]

dang, I was sure they were the same formats gotta double check everything. sorry bout that. Be right back.

[nevcairiel]

Another thing you can try is flipping the "Disable Audio Stream Parsing" option in the LAV Splitter Properties (Video won't have any effect, AVC1 in MKV does not get parsed)

I can probably try to rip a Blu-ray with TrueHD audio later with MakeMKV, and see if something funny happens.

I don't think its related to the video stream, because like i mentioned, AVC1 in MKV will just be output as is, it does not usually get touched at all.. unless, its one of those funny files that does not have B-Frames, then it might actually break .. but i have never seen one of those on a Blu-ray.

Can you download http://research.m1stereo.tv/ffmpeg/s...26-1da254b.zip, in the "bin" folder is ffprobe, and run this command:

ffprobe -loglevel debug PATH://to/file

And post the full output?