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24th August 2008, 20:40 | #4003 | Link | |
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Quote:
like 0.2% and thats within the range of error.... |
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24th August 2008, 21:09 | #4004 | Link |
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I did, actually
but I always thought that this FAQ was outdated, and that all the available builds were ICL10 already.. on a 3.3Ghz Q6600 with extensive audio/video post-processing(96HQ resampling, spline resize, sharpening, rgb32 conversion, MT avisynth) on HD content, the difference is VERY MUCH noticeable I guess noone knows how to get nice and clean deinterlacing on 29.97 DVD content ? Last edited by pitch.fr; 24th August 2008 at 21:13. |
24th August 2008, 21:16 | #4005 | Link |
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libavcodec is always compiled with GCC so the decoding speed is pretty much identical for all our builds. ICL is only beneficial for some of the a/v postprocessing filters. Most people don't use those, so for them there is no noticable difference between builds.
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MPC-HC 2.1.7.2 |
24th August 2008, 22:08 | #4009 | Link |
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try Gabest's MP3 decoder.
huge soundstage, very clear audio, IEEEE float output. it doesn't get any better than that, I think it's by far the best mp3 decoder(I tried Shibatch, MAD, Franhofer, foobar, etc..) there's some MPC HC versions with standalone .ax filters Last edited by pitch.fr; 24th August 2008 at 22:15. |
25th August 2008, 00:49 | #4010 | Link | |
李姗倩 Lǐ Shān Qiàn
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https://bugs.launchpad.net/ubuntu/+s...er/+bug/244722 It may be ok in ffdshow (so far no obvious problems have been found in ffdshow-libmad), but the bug is in libmad itself, outdated and not maintained, so it should be safer to use another decoder. Besides, basically you don't get anything by selecting libmad unless your CPU only supports integer math, and not floating. IIRC libmad is the default mp3 decoder in ffdshow (I don't know why. WHY?), and so you might want to change that option manually. |
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25th August 2008, 04:58 | #4012 | Link |
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As many people already know about new AAC decoder http://multimedia.cx/eggs/aac-decoder-is-in/
There is no information about stability but are there some plans to include it to ffdshow in future? It has better performance than faad. |
25th August 2008, 05:43 | #4013 | Link | |
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25th August 2008, 09:57 | #4014 | Link | |
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I mostly use Gabest MPC's MP3 decoder for music(so A/V sync is irrelevant), and I might have watched a few AVI's with VBR MP3.....they seemed fine to me ?! I use Reclock and HR, so my movies are under tight supervision I'd guess that Gabest would have seen and fixed such an A/V bug, considering he really knows what he's doing so this bug might either be only MPLAYER-related, Gabest would have fixed it in his DSHOW filter or I didn't encounter the bug yet ?! I'll run more tests, and compare with ffdshow's built-in MP3 decoders. Last edited by pitch.fr; 25th August 2008 at 10:22. |
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26th August 2008, 00:29 | #4016 | Link |
李姗倩 Lǐ Shān Qiàn
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@Octo-puss
@Mangix Yup, my choice now is mp3lib too. That's mplayer's standard default too. I have no real reason to like it, but I do have a reason to dislike libmad, so relatively... @pitch.fr No, this bug is probably in libmad, not in mplayer. If you select another decoder (-ac3 mp3 or -ac3 ffmp3), mplayer is happy with MP3 including VBR. Besides, I was told that madplay (the reference implementation of libmad) has bugs too. Maybe things are ok on Windows, which uses it's own sync system, just letting libmad decode, not asking it what time it is now. It's just that I really can't trust libmad anymore, now that I know how it's broken on mplayer. I wouldn't make it ffdshow's default mp3 decoder. Many years ago, when I found that ffdshow's default Vorbis decoder was really bad, milan told me that he would still like to keep Tremor in Low Quality Mode for slower CPUs. Maybe libmad is there for the same reason. But I tend to think it shouldn't be the default. libmad might behave differently than other DirectShow mp3 decoders on Windows if the first mp3 frame is a VBR tag frame ("LAME", "Xing", "Info"), especially a LAME tag frame. libmad is fully VBR-tag-aware. But the difference is like 24 ms, so hard to detect. And actually this part may be related to the bug. When my friends and I found that mplayer -ac mad didn't like VBR MP3, we first assumed that it just didn't like the hack to put VBR audio in AVI. Some also suggested that packed bvops were bad too. However, like that bug report says, we then noticed libmad didn't like VBR MP3 in (x264+VBR MP3).mp4 .mkv etc. either. So the problem is more fundamental: libmad itself is broken, and you can't blame Nandub's hack or DivX's hack here. I am under impression that mpalyer's libmad goes crazy especially when you put VBR MP3 *without* the VBR tag (lame -t), but it's not really stable *with* the tag either. LAME tag might be a cool hack for audio-only files, but depending on it is a bad idea for movies, since it exists only as the first mp3 frame and you might edit your movie removing the first part, or dividing it into 2 or more. Or you might concatenate 2 movies, and if each of them has this tag, you end up having the hack padding in the middle of your movie. |
26th August 2008, 13:30 | #4017 | Link |
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I have never noticed any VBR related problems with libmad and I am not aware of any ffdshow users that are. So you are probably right that the bug doesn't manifest itself with DirectShow, or at least not in a noticeable way.
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MPC-HC 2.1.7.2 |
26th August 2008, 14:04 | #4019 | Link | |
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Quote:
yet noone complains, mostly coz they watch movies in 60Hz on crappy flat screens. so this user base is not too picky when it comes to A/V sync and dropped frames |
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ffdshow, ffdshow tryouts, ffdshow-mt, ffplay, icl |
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