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30th April 2013, 23:54 | #12262 | Link |
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I really like this tool. Only thing I wish it could handle was multithreading. No matter what I do it seems to saturate only one "core", so on a "quad core" CPU eac3to will max out at 25%. On an "octal core" CPU it will max out at 12.5%. Perhaps there is a command line argument to set threading options or the number of threads to use, or a special super secret "build from source" multithreaded version I am unaware of, but I can't seem to find a way to make eac3to use my entire CPU.
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1st May 2013, 05:10 | #12263 | Link |
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any way to speed up audio to a specific framerate?
this works fine: Code:
eac3to source.wav output.wav -25.000 -changeTo24.000 Code:
eac3to source.wav output.wav -25.000 -changeTo25.650 |
1st May 2013, 12:22 | #12264 | Link | |
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Quote:
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2nd May 2013, 09:56 | #12268 | Link |
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eac3to was born to manage E-AC3 audio (for that the name) in EVO container.
And many other audio conversions. After was added support for m2ts, ts, VOB, ... Later a partial support for mkv files. MP4 support was never added. Maybe because there are other tools to do the job, maybe because patent conflicts, standard full specs, different formats, ...
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2nd May 2013, 13:59 | #12269 | Link |
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Hello.
madshi, Thank you a lot EAC3To. It's awesome! I'm having a doubt. Which is the last version of Nero 7 that works for EAC3To. I have the version 7.10.0 (Activated and all to Premium Edition) and when I do the test in EAC3To, it still says that I don't have Nero 7 installed. I'm on Windows 7 Ultimate x64 Is that the problem? In any case, thank you a ton! |
2nd May 2013, 16:37 | #12270 | Link |
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Please forgive me if this is a common question, i've spent a lot of time searching for answers for my problem with no avail.
So i succesfully decoded a DTS-ES file (6.1 channel) into a flac. I wasn´t satisfied with the file size so i decided to go lossy to save space. At first i considered going with AC3 but 640kbps wouldn´t fit DVD9 discs and i don´t want to reencode my video track again. That's when i started getting worried that AC3 448kbps quality wouldn´t satisfy me enough so i decided going on AAC multichannel. This was the first time i was encoding a 7th channel audio AAC instead of a simple 5.1, eac3to gave me the warning when encoding the audio: "neroaacenc doesn´t support 6.1 encoding. Will double the 7th channel". While i do know that AAC is much more efficient than AC3 i started worrying that this extra useless (doubled) channel would kill all the purpose of extra efficiency of the AAC. 8 channels vs 6 channels would represent roughly 30% of extra audio data. Do people actually transcode 6.1 DTS-ES to AAC or should i stick with DD 448? Compatibility is not a issue to me since the video track itself is a 10bit encode so i will use a software decoding pc in my living room for playing the file. Another question is: eac3to does not support Adaptive bit rate of nero? -q settings are getting me very inconsistent sizes/bitrates. (also, is ABR considerable much less efficient than VBR encoding? should i stay with VBR even if it gives 20kb/s less than a target abr setting?) Thanks a lot. Last edited by sephirotic; 2nd May 2013 at 20:53. |
3rd May 2013, 02:43 | #12272 | Link | |
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Quote:
Edit: Well, I re-read the OP and DRC is applied sometimes, I guess I know now.... Again, thank you tebasuna. Last edited by MerolaC; 3rd May 2013 at 02:53. |
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3rd May 2013, 12:30 | #12273 | Link | ||
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If you have 5.1 speakers is better use -down6, the BC channel is mixed in surround channel and you still have the BC like phantom channel. BTW, NeroAacEnc can encode 6.1. Try this: eac3to input6.1.dts stdout.wav | NeroAacEnc -q 0.5 -ignorelength -if - -of output.m4a The problem here is the order in back/rear channels. Maybe your AAC decoder can't restore the correct mapping. Quote:
Code:
Quality/bitrate control: -q <number> : Enables "target quality" mode. <number> is a floating-point number in 0...1 range. -br <number> : Specifies "target bitrate" mode. <number> is target bitrate in bits per second. -cbr <number> : Specifies "target bitrate (streaming)" mode. <number> is target bitrate in bits per second. When neither of above quality/bitrate options is used, the encoder defaults to equivalent of -q 0.5 Multipass encoding: -2pass : Enables two-pass encoding mode. Note that two-pass more requires a physical file as input, rather than stdin.
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3rd May 2013, 14:56 | #12274 | Link |
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Does anyone know how I can pipe eac3to output to flac.exe?
I know eac3to has in-built flac encoding (using libFlac), but compression is seemingly set at level 8 which takes a lot longer than level 0 (and I don't need the extra compression). I've tried: eac3to file.dts stdout.wav | flac -0 - -o file.flac ...which works on short files but not on movie-length ones, throwing up a foreign metadata error towards the end of encoding. I'm guessing this could be where the stdout.wav temp file reaches the 4GB WAV header limit? I've also tried doing it in two steps: dts>wav (with eac3to) then wav>flac (with flac), but again wav files larger than 4GB fail to encode in flac. :-( Does anyone know a workaround? If not, could eac3to.exe or libFlac.dll conceivably be patched to output at level 0 flac compression instead of level 8? |
3rd May 2013, 19:46 | #12275 | Link | |
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When you pipe something, there is no file created, so there is no filesystem bound filesize limit. However, the WAV file format internally has a limit of 4GB filesizes due to how data is stored in its internal headers, which are passed between the two programs. Maybe the crash is occurring when this value overflows. |
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4th May 2013, 06:14 | #12276 | Link |
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@buffyangel108
You can try adding --ignore-chunk-sizes to FLAC command line and see if that can help. Also, you may try this version of FLAC.
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10th May 2013, 11:36 | #12278 | Link | |
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If you want insert 20 sec. the position must be at last 0:00:21 Maybe eac3to check first if can do a -loop option and show the <ERROR> because don't have enough audio to repeat. But for -silence option should admit it.
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