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27th November 2011, 20:23 | #7383 | Link |
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A little sample: Imagine a 20 KHz sinus sampled at 40 KHz. It is no sinus anymore, it's a triangle. So you did not understand the Nyquist-Shannon-Theorem at all. It does not say you don't need any more than 2x than the highest freq, it says you need AT LEAST 2 times the sampling to reproduce it. It's like with images. The higher the resolution, the naturallier the image will look.
@nev: How can I cut an MKV so that I can give you a sample of my WavPack problem? |
27th November 2011, 20:41 | #7385 | Link |
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I've been pondering on creating a new installer script, adding better and smarter options, separating 32 and 64 in the process, but I hate working on the damn script.
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LAV Filters - open source ffmpeg based media splitter and decoders |
27th November 2011, 20:43 | #7386 | Link |
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That'd be nice. For now I'm making a custom script that only deals with 32 bit so that I can use it to do an actuall INSTALL into the MC17 private copy dir. Don't ask. I'm insane. But to do that I can't have that x86 stuff on it. I do agree, working on the install script isn't enjoyable.
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27th November 2011, 21:24 | #7387 | Link |
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Excellent. So I took your ISS, Nev, and modified it so that it only builds and installs the 32 bit version. I set the default path in the new script to the private copy of LAV in MC17. Now I can run a silent uninstall, and then silent install to update my private copy of LAV. This is useless for almost anyone else, but, for my environment it's pretty awesome. I just have to keep my ISS file in sync with yours. I'm not doing version stuff so I couldn't care less about that. But if you add/remove files I have to modify my script. This is pretty sweet. Yes, little things that make my life easier amuse me.
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27th November 2011, 21:31 | #7388 | Link |
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You should have a better look at my replies.
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27th November 2011, 21:32 | #7389 | Link |
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Found something interesting today. I was looking at getting rid of the splitter/decoder mess needed to properly generate thumbnails in Explorer x64, so I tried removing everything and leaving LAV splitter+video+audio. Everything worked well until it failed to generate the thumbnail in some files. After some investigation it seems related to subtitles. Files with ass subs failed. After installing ffdshow the same files worked, so after some more investigation I think I found why: the video pin and the subtitle pin have to be connected to the same filter. LAV video has no in subtitle pin so subtitles went to who knows where. The DS graphs below are what graphstudio's "Render media file" outputs with each set of options, and probably the same Explorer is using:
- Situation 1, LAV only (FAILS): LAV splitter (video pin) --> LAV video (video decoder) --> renderer LAV splitter (ass pin) --> Internal Script Command Renderer - Situation 2, LAV+ffdshow with LAV as video decoder and ffdshow as subtitle renderer (FAILS): LAV splitter (video pin) --> LAV video (video decoder) --> ffdshow RAW (video PP) --> renderer LAV splitter (ass pin) ----------------------------------> ffdshow RAW (video PP)^ - Situation 3, ffdshow as decoder but not accepting subs (FAILS): LAV splitter (video pin) --> ffdshow (video decoder) --> renderer LAV splitter (ass pin) --> Internal Script Command Renderer - Situation 4, ffdshow eating both video and subs (WORKS): LAV splitter (video pin) --> ffdshow (video decoder) --> renderer LAV splitter (ass pin) -----> ffdshow (video decoder)^ To tell ffdshow to accept or refuse subtitle connection you have to enable/disable the checkboxes of enabled formats in the subtitle filter. It doesn't matter if the filter is enabled or not. Do you guys know if this is a known issue and/or fixable in any way? |
27th November 2011, 21:40 | #7390 | Link |
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Its probably not "to the same filter", its more likely the "Internal Script Command Renderer" is doing shenanigans again. Its no good, and i should probably just deny connection to it inside LAV Splitter - it serves no real purpose.
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27th November 2011, 21:41 | #7391 | Link |
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One solution would be to let the splitter expose no subtitle pin when loaded by Explorer.
Here is a FLV sample that doesn't get a thumbnail. Possibly do to dynamic resizing/cropping?
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MPC-HC 2.1.7.2 Last edited by clsid; 27th November 2011 at 21:43. |
27th November 2011, 22:11 | #7393 | Link | |
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Disabling subtitles when the thumbnail-generator loads it is probably nothing that would hurt either.
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27th November 2011, 22:36 | #7394 | Link | |
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27th November 2011, 22:41 | #7395 | Link |
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Is this reported issue of subs and thumbnailing releated?
http://code.google.com/p/lavfilters/issues/detail?id=68 Anyway I am now using Icaros instead of Windows thumbnail generator, and although it is a little bit unstable it really wokrs most of times... say 98% of the times. |
27th November 2011, 22:47 | #7396 | Link | |||
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Sorry for feeding the OT, but I have to do this.
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Not at all. The human perception of the spatial resolution of an image as observed by the eye has nothing to do with the human perception of the temporal resolution of sound. Last edited by e-t172; 27th November 2011 at 22:51. |
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27th November 2011, 22:58 | #7397 | Link |
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OK sorry nev, I'm starting a thread myself where we can take this.
http://www.avsforum.com/avs-vb/showt...4#post21265964 I assume most of us are also AVS regulars. Doom9 doesn't seem to have a section for this kind of topic.
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27th November 2011, 23:28 | #7398 | Link | ||
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27th November 2011, 23:40 | #7399 | Link | |
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_ _ __ _ Last edited by rica; 27th November 2011 at 23:44. |
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28th November 2011, 00:14 | #7400 | Link | |||||
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A properly muxed MKV should give no problems at all. Also MKV's can handle almost any content there is. Quote:
What content can it / can it not handle ? Any plans maybe for writing a muxer/demuxer for it ? Quote:
I still have to test the wavepack DS-filter : I wish it can connect to standard splitters like Lav-splitter, Haali and other MKV/MP4 splitters. It seems to have it's own "splitter" though, what makes me think it will only work with that... Quote:
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decoders, directshow, filters, splitter |
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