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Old 5th September 2011, 20:11   #5241  |  Link
SamuriHL
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Quote:
Originally Posted by ikarad View Post
Will you include a sub renderer in a next version?
LOL. That seems unlikely. That's not a small piece of work.
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Old 5th September 2011, 21:26   #5242  |  Link
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LOL. That seems unlikely. That's not a small piece of work.
Stephen said that lav filters will replace ffdshow
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Originally Posted by Stephen R. Savage View Post
AssRender.dll is an Avisynth plugin. You can't register it or use it in DirectShow, or anything like that.

As for ffdshow needing a new subtitle renderer, there's nothing stopping you from using the MPC-HC one or DirectVobSub. ffdshow development has halted and it is already planned to be replaced by LAVFilters anyway, so there's no sense in petitioning for feature changes.
http://forum.doom9.org/showpost.php?...ostcount=13955
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Old 5th September 2011, 21:28   #5243  |  Link
SamuriHL
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Yea, I read that. I'm not sure I know what that means. LAV Filters have nothing at all to do with ffdshow. If someone wants to work on ffdshow, they can. LAV Filters is its own project.
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Old 5th September 2011, 21:32   #5244  |  Link
nevcairiel
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I said it before, and i'll say it again - its not the video decoders job to render subtitles. Its a video decoder, not a subtitle renderer.

Besides, you'll get horrible looking subs if you render them on a YUV 4:2:0 frame
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Old 5th September 2011, 21:42   #5245  |  Link
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Grab feature?

Given that there is now a HQ RGB converter (and it accepts 10bit, no less), would it be feasible (as in, not too much work) to add a barebone grab function that would be using this converter?

What I have in mind is something that would dump bmp image of current frame to a predefined directory (or uncompressed png in case that writing a png-structure file is easier than writing a bmp). It would do that either on demand (as ffdshow does when one hits ctrl-alt-g) or for each decoded frame (like when you just enable the grab filter in ffdshow). FFdshow uses the frame's number as a filename for the grabbed image, which is rather useful idea imho.

Luckily, you can already get this to work with ffdshow if you load it after lavvideo with forced rgb output. With this functionality inside lavvideo, it would however allow you to grab images even when passing untouched yuv to madvr, for example. (FFdshow's grab also has some glitches with non-mod4 width video, which is a different thing.)

While it's probably true that (ideally) screenshot-taking should be a responsibility of individual video player programs, there is the same issue as with video renderers, only worse. Many players fail to respect colormatrix of video while converting the screenshot to rgb and what's worse, virtually every player uses lousy chroma upsampling, too. Players I tried use what looked like point-scaling with much worse quality than what a basic gpu's overlay renderer produces... FFdshow's grab was one of the few ways to get around those issues (as it could apply the HQ conversion to the capped images, even when ffdshow itself was outputting yuv).

Here ends a shameless feature suggestion, thanks for reading!

Last edited by mandarinka; 5th September 2011 at 21:46.
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Old 6th September 2011, 13:27   #5246  |  Link
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Hi,

Since the YUC/RGB converters are much more optimized in the new version, I'd like to ask whether LAV video decoder is good enough to replace FFDShow?
Thanks!
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Old 6th September 2011, 19:34   #5247  |  Link
Com DAC
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Thank you for the answer and it makes perfect sense. With this answer I have tried taking the mkv and stripping out the stereo stream and just leaving the 5.1 stream but after doing that I get absolutely no audio with LAV. Could it be because it doesn't start till part way into the file?

On that note does anyone know of a good tool to splice out part of an mkv file without having to re-compress it?

Thank you
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Old 6th September 2011, 20:44   #5248  |  Link
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I have a newbie question.

Is it possible to configure the LAV filters to open up video files in VirtualDub?
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Old 6th September 2011, 20:52   #5249  |  Link
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Is it possible to configure the LAV filters to open up video files in VirtualDub?
Not possible (¿yet?).
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Old 6th September 2011, 20:57   #5250  |  Link
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Originally Posted by SeeMoreDigital View Post
I have a newbie question.

Is it possible to configure the LAV filters to open up video files in VirtualDub?
Ummm. How is that relevant to a splitter or decoder? Just associate the desired filetypes with virtualdub in windows.
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Old 6th September 2011, 21:28   #5251  |  Link
SeeMoreDigital
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Not possible (¿yet?).
I must admit I'm really impressed by the simplicity of the LAV Filter decoder suite.

I will look forward to them being made available for use with VirtualDub
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Old 6th September 2011, 21:34   #5252  |  Link
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I have no idea how VirtualDub works. If it can use DirectShow filters, it can surely already use them. But something tells me its limited to VfW, i don't see that happening anytime soon.
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Old 6th September 2011, 21:36   #5253  |  Link
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Quote:
Originally Posted by SeeMoreDigital View Post
I have a newbie question.

Is it possible to configure the LAV filters to open up video files in VirtualDub?
You might be able to use it via... hmm.. Avisynth script w/ DirectShowSource()...
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Old 6th September 2011, 22:39   #5254  |  Link
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Originally Posted by somy View Post
Hi,

Since the YUC/RGB converters are much more optimized in the new version, I'd like to ask whether LAV video decoder is good enough to replace FFDShow?
Thanks!
Yes, for decoding part, it's better. And it's still developed...
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Old 6th September 2011, 22:51   #5255  |  Link
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There is quite a number of free input plugins which allow to open files in VirtualDub without having to rely on vfw. Among others there is a DirectShow input plugin as well as an ffmpeg-based one. They can easliy be found in VD's forum.

On a side note: I strongly recommend having a look a the (programming related) blog posts on the VirtualDub website. These could even be of interest to Nev and Madshi, because (as far as I can tell) they are extremly profound and often very impressive - evidence of great programming knowledge.

Last edited by Sven75; 6th September 2011 at 22:56.
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Old 7th September 2011, 01:08   #5256  |  Link
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Originally Posted by nevcairiel View Post
I have no idea how VirtualDub works. If it can use DirectShow filters, it can surely already use them. But something tells me its limited to VfW, i don't see that happening anytime soon.
Get a DirectShow VDF plugin:
http://forums.virtualdub.org/index.p...ST&f=7&t=15093
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Old 7th September 2011, 01:15   #5257  |  Link
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Proper VfW ( and ACM too, ¿why not? ) support for LAV Video and LAV Audio would require a VfW/ACM "wrapper", so to speak. ffdshow has its ff_vfw.dll, so the LAV decoders, ideally, would use a lav-vfw.dll and a lav-acm.dll
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Old 7th September 2011, 02:30   #5258  |  Link
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Heh, if anything, he should add a Media Foundation interface. Not VfW. :P
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Old 7th September 2011, 03:53   #5259  |  Link
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VfW ... [ideal]
Don't ever use these two words in the same sentence
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Old 7th September 2011, 07:57   #5260  |  Link
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Is Avisynth limited to using the ffdshow raw video filter when used in conjunction with with Lav Video?
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