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1st June 2012, 22:04 | #11202 | Link |
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Didn't seem to have helped. Just tried it with LAV as audio decoder and ffdshow as audio post-processor. Video and audio are out of sync after a short time. Tried on Sport1 HD. I will try whether it is possible to reproduce it with a file. But I think that the problem is a combination of push graph (DVBSource), LAV Video and ffdshow Audio.
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2nd June 2012, 19:04 | #11206 | Link | |
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Quote:
I tested build a73f6321f4f7 (most recent from git) and the 2 builds before : these are all affected. I'll try to figure out between which builds the regression was introduced. |
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3rd June 2012, 08:19 | #11207 | Link |
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hi i am new here and hope this is the right place to nevcairiel ask where / what the problem is
i use your Lav Directshow Filter Pack for my FortheRecord Windows Media Center client but think i have found a problem If i give Windows MediaPlayer or Windows Media Center an url with hostname can both not play the stream give i both the url with ip instead of hostname work it is that a problem of the Lav Splitter or of Windows MediaPlayer /Windows Media Center ? |
3rd June 2012, 08:29 | #11208 | Link |
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hello guys,
i've stumbled upon a bug in LAV splitter's subs rule, i cant seem to draw english audio. im using this setting(advance): also, how do i draw the signs[eng] instead of the full sub[eng]? its a sort of english subs that only subs signs. well simply put theres two english subs stream and i want to select the second stream >,> edit: ah right, leaving the audio selection blank seems to null the subs rule. so i fixed the drawing of the english audio, but i still cant seem to draw the alternate english sub. Last edited by kitame; 3rd June 2012 at 13:43. |
3rd June 2012, 21:38 | #11211 | Link |
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OK, A/V also seem to be async with LAV Audio, so it does not seem to have anything to do with the audio decoder or post-processor. Audio is sometimes earlier than video. So it may be a problem with LAV Video and push graph. Or maybe a general problem with LAV Video. I will have to do some more investigations:
- whether I can reproduce it in a pull scenario with file playback - find out when this happens, so whether sync is lost after some time (and is slowly getting worse) or maybe sometimes even immediately
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4th June 2012, 10:11 | #11213 | Link | ||
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other than that, is there other possible options? like 3rd party add-on. |
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5th June 2012, 01:36 | #11215 | Link |
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Hi all - In the MadVR thread, we became in a discussion about if it is possible that LAV Audio Decoder fully and correctly decodes the entire lossless file and does not down-sample.
Here is a copy of my post on that thread - it explains my skepticism and in a nutshell asks: Does putting dtsdecoderdll.dll in the LAV Filters directory finally solve this problem? (It seems too good to be true! ) {start post} ============ , are you sure it is not just decoding the CORE components and "down-sampling"* the lossless stuff? I have spent many hours on this issue going back to the PAP (or lack there-of) debacle when Lossless formats started appearing on HTPC's. (That is the reason I have a Xonar card - it was the first to fully play more than the "core" parts of TrueHD and DTS-MA.) Still, the Xonar card, and indeed the whole filter-system is quite picky when trying to play these extended formats. From all of my research, it seems that the only way to get true lossless audio is to have a bitstream that preserves the PAP. Theoretically one should be able to decode to PCM (which is what we are talking about here.) But I thought both because of legal reasons (MPAA and their darn un-tamperable PAP!) and limitations with the filter-graphs themselves (including the inability to read the all of the extended lossless data.) To test this hypothesis, let's do an example: This is the real Pin information for The DTS-MA track for the extended version of "Return of the King:" The input pin to any decoder file isthe standard DTS core bitrate of 1536kbps LAVAudioDecoder (IN) Audio: DTS 48000Hz 7ch 1536kbps The output pin's bitrate will always be larger since it is a decoded WAV in a PCM at this point. LAVAudioDecoder (OUT) Audio: WAVE_FORMAT_EXTENSIBLE 48000Hz 7ch 8064kbps So using LAVAudioDecoder we have a bitrate around 8,000kbps (I verified that this is the bitrate going into the Renderer.) Now let's try bitstreaming. First take out the LAVAudioDecoder and go straight to ffdShow Audio in Bitstream format. (For some reason that decoder is one of a small few (like eac2) that runs a weird hack that gives it access to the supplemental data.) ffdShow (Audio) (0UT) Audio: 0x0241 192000Hz 8ch 24576kbps So using in bit-stream mode (that we know is lossless) we have a bitrate around 24576kbps (3X the decoded mode@) That is a much higher bitrate than the original! (3X) Too bad bit-rates are variable and that MediaInfo cannot display a file's bit-rate. Furthermore this is not proof that the sound quality is greater - indeed any WAVE-format PCM is going to have many kbps; however, that is a significant difference and seems to show me that not all of the data is being processed even in this setup! Don't get me wrong, I'm not married to bitstreaming - in fact I'd prefer to work in the PCM world where I can use ReClock etc, but given its history, I am always skeptical when I hear of something that does "lossless" audio cleanly. If this is truly performing software decoding on DTS_MA without any downsampling, then this is the first time I have heard of such a thing Wow this is WAY off-topic, and I apologize. As you can tell I am more than a little interested in this. I think I will post this in the LAVFilters thread too… Thanks for reading! MikeY * - "down-sampling" has been used incorrectly in this case in the past. To me (at least with DTS-MA) the issue is simply stripping the non-core data. EDIT/UPDATE/SOLUTION: Thank you for the response nevcairiel (see below.) Essentially I am a fool, I forgot to multiply the different sampling frequencies to get the correct bit-rate. In other words (correct me if I'm wrong,) but it looks like it is in fact working fine: the 1536 input pin is a misnomer, it is receiving and decoding the full DTS-MA signal. VERY cool stuff, if this was around a couple years ago I could have saved a hundred dollars on my Xonar audio-card! (Since DTS-MA and TrueHD can be decoded at full-quality, there is no longer any need to bitstream this.) Last edited by Mikey2; 15th August 2012 at 19:44. |
5th June 2012, 01:39 | #11216 | Link |
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The MA extensions of DTS contain the extra channels. If it were only doing core, then you would only ever get 5.1. Trust us, we did a lot of testing around this when the ability was first added. Nev is hooking the ArcSoft decoder directly in code. The down-sampling, i.e. reducing the bit depth to 48/16 doesn't actually happen in the decoder but in the renderer. So we avoid that by using the decoder directly. In any case, yes, you are getting full DTS-HD MA decoding. At all the right bitdepth.
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5th June 2012, 03:14 | #11217 | Link |
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All those bitrate numbers are not the actual stream numbers. I don't know if there's an error or if they're reading something else, but Nev has stated in the past that what LAV decoder reports is not the HD bitrate, and it doesn't matter. The 1536 kbps is clearly the core DTS-ES (6.1 or "7 channel") bitrate. The out bitrate apparently is a 7-channel (6.1) 24-bit 48kHz PCM which is likely what the 6.1 DTS-HD MA track would decode to. I don't know what the ffdshow numbers mean, if it's resampling, or if they're just plainly wrong, but they clearly are not the decoded bitrate. The sampling freq and channels just don't match.
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5th June 2012, 07:08 | #11218 | Link |
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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:
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5th June 2012, 10:30 | #11219 | Link |
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Win 7 SP 1 32-bit, LAV Filter 0.50.5
Bug Report if I may: For many .FLV files that are encoded with VP6 or Sorenson, using LAV Splitter Source as the splitter, when the video comes to the end it will not start the video again (loop the video) but instead stops the video and/or crashes the player. FLV files that are not encoded with VP6 or Sorenson (such as AVC) work fine. I included three samples: Two vids with VP6 and one with Sorenson (note: samples are a little naughty but nothing bad) http://www.filefactory.com/file/m9bj.../n/Samples_zip I duplicated this many times with Zoom Player and POT Player: With Zoom Player & MadVR, when video comes to the end it starts flashing and crashes the player. With Zoom and Haali & VMR7/9 it merely comes to the end of the vid and stops (doesn't loop as it should but also doesn't crash the player). Note: ffdshow is the decoder. With POT Player & all renderers, video stops at the end and doesn't loop as it should. Note: Internal POT Player decoder is the decoder I have only been able to duplicate this looping/crashing problem I describe with FLV files encoded with VP6 and Sorenson and with LAV Filter as the FLV Splitter. Hope I have been able to provide you with good info and the sample vids in order to easily duplicate the same problems I am experiencing. Cheers |
5th June 2012, 18:09 | #11220 | Link |
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Is bitstreaming over HDMI hardware dependent? When I connect my Dell E6420 Laptop with HDMI output to my Onkyo TX-SR606 AVR all I get is video and no audio. I have all of the bitstream options check in the LAV Audio. Any tips?
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decoders, directshow, filters, splitter |
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