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27th May 2008, 23:31 | #4963 | Link |
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inflated flac files
I've been re-encoding some DTS-HD flacs that have been obtained from both blu-ray and HD-DVD with recent versions of eac3to. The original files are the ones that are created directly by eac3to and then them I re-encoded with 'flac 1.2.0a -8' using Foobar2000. The resulting files are usually way smaller (3.7GB -> 1.7GB and 2.0GB -> 1.5GB) while the bitrate and sample depth remains (about) the same. Why does eac3to creates these hugely inflated flac files?
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28th May 2008, 07:06 | #4965 | Link |
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Sorry, I should have been more careful: The bitrate remains about the same (eg 5000 kbps -> 4990 kpbs, probably due to going from 'flac -5' to 'flac -8'), the sample depth remains 24 bit.
Last edited by SoleBastard; 28th May 2008 at 07:22. |
28th May 2008, 09:05 | #4966 | Link | ||||||||
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Blu-Ray DD+ tracks have a DD core. HD DVD DD+ tracks do not. Blu-Ray DD+ tracks are extremely rare, though. So generally it's safe to say that DD+ tracks do not have a core.
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"eac3to foobar.flac eac3to.flac" Does the file size go back from 1.7GB to 3.7GB this way? If yes, then I have to check out what's happening. If the file size stays at 1.7GB then Foobar2000 has manipulated the audio data while reencoding it. It would not be a big surprise! Because many of the open source flac decoders only support 16bit decoding. That means if you decode with Foobar2000 you probably lose anything over 16bit. Just guessing here, though... |
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28th May 2008, 12:51 | #4967 | Link |
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Yes it's a daunting task. We have two options here as I see it: One, we could sift through the several hundred pages in this thread and try to divide them, and two, we could just start a new thread and direct all general questions to it. If we can come up with guidelines for what material would belong to which category I will re read through the entire thread and make a list for the moderators.
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28th May 2008, 13:12 | #4968 | Link | |
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(1) eac3to - development (bugs and improvements) (2) eac3to - help (how to use etc) ? |
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28th May 2008, 15:10 | #4970 | Link | ||||
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Might your error checking be too harsh? Or am I potentially creating trouble using this path? I tried to convert blu-ray Chicago to mkv and got an Quote:
Tried the -seektoIFrames option, but that resulted in the same error. Quote:
I made a small sample but eac3to complains that it cannot detect the format of the source file. Might this sample nevertheless be of help? |
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28th May 2008, 15:45 | #4971 | Link | |
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Sound good? Good point. This is along the same line as the topic which was running in this thread a while ago about changing the name of eac3to since it's not just an audio tool any more. The topic is already here so maybe it should stay. I think this is a call that should be made by a moderator. Also if the eac3to threads are moved then the GUI thread will need to be moved too. Last edited by saint-francis; 28th May 2008 at 15:49. |
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28th May 2008, 17:42 | #4973 | Link | |
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The correct command is: Code:
eac3to "K:\Chicago [Blu-ray]\Chicago_1.m2ts"+"K:\Chicago [Blu-ray]\Chicago_2.m2ts" 1:d:\Chicago.mkv -seektoIFrames 2:d:\Chicago.ac3 Last edited by nautilus7; 28th May 2008 at 17:45. |
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28th May 2008, 18:24 | #4974 | Link | ||
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Furthermore I think it would be helpful if both threads had a good introduction post like this thread currently has. So maybe I should start a new thread for development? Nope. A missing sync byte is a very easy and reliable check. If the sync byte is missing, something is really wrong. |
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28th May 2008, 18:36 | #4975 | Link | |
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I think that the first page of this thread will be good for the introduction for the help thread so I'll just leave it here. When My list is done I'll let you know and you can start the new development thread with an introduction post that contains what you see fit. |
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28th May 2008, 21:10 | #4977 | Link |
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Since main purpose of eac3to is to convert HD DVDs and Blu-ray Discs to matroska format, i believe it would better fit there. But whatever you/the mods decide doesn't really make any difference.
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28th May 2008, 23:27 | #4979 | Link |
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DTS-MA to DTS
Die Hard 2
eac3to 00001.m2ts 2: diehard2.dts M2TS, 1 video track, 5 audio tracks, 2:03:21 1: h264/AVC, 1080p24 /1.001 (16:9) 2: DTS Master Audio, English, 5.1 channels, 24 bits, 48khz, -9ms encoded to dts with SurCode, but cannot mux into mkv. I got timing errors, no dts header found, bytes discarded, yada yada yada. So I'm going the manual route: eac3to 00001.m2ts 2: diehard2.wavs QUESTION: Do I need to specify the -9ms delay? REQUEST: A better set of instructions for use. Thanks for the great program. |
28th May 2008, 23:41 | #4980 | Link |
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EVERY dts-hd audio track contains a simple dts core @ 1536 kbps. If that is the bitrate you want, don't encode with surcode. Just use -core switch to extract the core.
If you let eac3to do either demuxing or decoding of any track ,you'll see a mesage saying "applying delay". So the answer is no, you don't need to do anything regarding the delay. Suggested command: eac3to 00001.m2ts 2: audio.dts -core |
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