Search found 43 matches
- Sun Jun 01, 2008 12:30 am
- Forum: Development
- Topic: AC3-in-MP4
- Replies: 44
- Views: 32546
Re: AC3-in-MP4
Ed, mFramePerPacket has nothing to do with ffmpeg, it's a field in the sound description in the m4v/mp4/mov file. If you switch to using a version 2 sound descriptor, since it makes the AC3 a bit more useful, I was just saying that make sure the mFramePerPacket is 0. If it's not 0, passthrough does ...
- Thu May 29, 2008 9:02 pm
- Forum: Development
- Topic: AC3-in-MP4
- Replies: 44
- Views: 32546
Re: AC3-in-MP4
A quick tip for anyone playing with it, setting mFramePerPacket to anything breaks the AC3 passthrough. Makes no sense if you ask me, but it should remain 0.
http://trac.perian.org/changeset/905
http://trac.perian.org/changeset/905
- Wed Apr 23, 2008 4:30 pm
- Forum: Development
- Topic: AC3-in-MP4
- Replies: 44
- Views: 32546
Re: AC3-in-MP4
van,
You are right in the spec. I just didn't look it up. Although, it does allow 24 bit audio, so there is a reason for setting that field at least. Although it doesn't seem to be mentioned in the spec, there is nothing limiting DVDs from using 24KHz sampling
You are right in the spec. I just didn't look it up. Although, it does allow 24 bit audio, so there is a reason for setting that field at least. Although it doesn't seem to be mentioned in the spec, there is nothing limiting DVDs from using 24KHz sampling
- Wed Apr 23, 2008 1:15 pm
- Forum: Development
- Topic: AC3-in-MP4
- Replies: 44
- Views: 32546
Re: AC3-in-MP4
First, I'd suggest setting the sample rate correctly. Admittedly, most DVDs are 48KHz, but this isn't a requirement in the DVD spec IIRC. Second, I'd suggest changing it to a sound description version 2 atom. Then, you can use a channel count greater than 2, set the channel layout, etc... This is us...
- Sun Apr 20, 2008 9:49 pm
- Forum: Development
- Topic: AC3-in-MP4
- Replies: 44
- Views: 32546
Re: AC3-in-MP4
Looks like there are issues with anything that doesn't use a 384kb/s bitrate like Apple's sample. Been trying to decipher the AC3 atom data... In an effort to reduce some of the hackiness of this, I thought I'd share my discoveries yesterday. The AC3 atom isn't special . It is just a version 0 soun...
- Fri Oct 05, 2007 10:13 pm
- Forum: General Questions
- Topic: 5.1 vs. 5.0, DTS, AC3 Passthrough
- Replies: 6
- Views: 2831
Re: 5.1 vs. 5.0, DTS, AC3 Passthrough
Would AC-3 passthrough keep the sub track? AC3 passthrough (and I am sure the same is true of DTS as well), preserves all channels because it just copies the compressed audio bit for bit. It doesn't do any decoding, any processing, anything other than copy. If you wish to preserve the sound quality...
Just to provide a data point: Several months ago (March or so?), I used HB to rip the entire B5 series. I did one episode per file, and didn't have a single issue. I used MTR on each disk and then encoded the ripped version in HB. I did this out of speed rather than out of necessity b/c I could be e...
- Thu Sep 20, 2007 10:38 pm
- Forum: Devices and Presets
- Topic: Apple TV and 5.1 support - some definitive answers
- Replies: 242
- Views: 88111
Welll, I just don't want to hack my Atv just like I don't want to hack my iPhone. I'd rather use a method that doesn't require hacking Honestly, you are doing something that Apple never intended for you to ever do. Hacking is pretty much an necessity, in such situations. If you are unwilling to hac...
- Mon Sep 10, 2007 8:46 pm
- Forum: Devices and Presets
- Topic: Best Setting for HACKED appleTV
- Replies: 27
- Views: 7648
- Sun Sep 09, 2007 2:09 am
- Forum: Devices and Presets
- Topic: Best Setting for HACKED appleTV
- Replies: 27
- Views: 7648
- Sat Sep 08, 2007 12:38 pm
- Forum: Devices and Presets
- Topic: Best Setting for HACKED appleTV
- Replies: 27
- Views: 7648
Re: actual experience using a hacked ATV
GB: One of the major reasons why I have not attempted to hack my Apple TV, is my perception, after reading some of the hack websites, that even once you install Perian, etc., it is still difficult to get iTunes to recognize a "non-standard" content file and send it over to the ATV HD. Has...
- Fri Sep 07, 2007 4:07 pm
- Forum: Devices and Presets
- Topic: Best Setting for HACKED appleTV
- Replies: 27
- Views: 7648
- Thu Aug 23, 2007 2:39 pm
- Forum: General Questions
- Topic: IRC network useless?
- Replies: 5
- Views: 1317
Re: IRC network useless?
Exactly, you paid nothing, so you are entitled to nothing. You aren't even entitled to have the program in the first place. So, stop complaining and be grateful for what you do have.LSTbran wrote:It seems that a majority of these "support" chat rooms are a waste. I guess I got what I paid for.
- Tue Aug 21, 2007 12:48 am
- Forum: Mac
- Topic: .mkv file creation hangs at muxing
- Replies: 16
- Views: 6586
- Sat Aug 18, 2007 3:44 pm
- Forum: Devices and Presets
- Topic: Frequently asked questions about Dolby Digital ...
- Replies: 11
- Views: 4395
Re: Thanks but..
My question was really geared at how to preserve the dolby digital using handbrake and an MP4, and that's not possible due to the limitation in MP4, is what you guys are saying. MP4 has a specific list of codecs allowed within the container (sometimes I hate MPEG standard bodies), and unlike the mp...
- Thu Aug 09, 2007 8:05 pm
- Forum: Development
- Topic: "Same as source" FPS Improvements
- Replies: 109
- Views: 25158
I would argue that this is not sufficient. I have some DVDs with interlaced content, and in some cases, the 10 preview frames do not show any sign of interlacing. Add on to examining the frame preceding and the frame following each of these 10 frames, and I think you have a robust detection mechani...
- Thu Aug 09, 2007 12:52 pm
- Forum: Development
- Topic: "Same as source" FPS Improvements
- Replies: 109
- Views: 25158
Since we're already looking at 10 frames spaced evenly throughout the title, during the initial scan, I'm hoping it will be possible to do something like what eddyg has going on with his subtitle scan. If, say, 6 out of 10 of the preview frames register as progressive, then mark the whole title as ...
- Wed Aug 08, 2007 9:51 pm
- Forum: Feature Requests
- Topic: Correct Track information for AC3 Passthrough
- Replies: 3
- Views: 1641
If it helps, here is some LGPL code that perian uses:
http://trac.perian.org/browser/trunk/bitstream_info.c
http://trac.perian.org/browser/trunk/bitstream_info.c
- Wed Aug 08, 2007 7:53 pm
- Forum: Development
- Topic: AC3 Passthrough for Matroska
- Replies: 7
- Views: 2902
Most likely the MKV info is wrong because HB doesn't set it correctly. I posted a related topic on this:
http://handbrake.m0k.org/forum/viewtopic.php?t=2415
http://handbrake.m0k.org/forum/viewtopic.php?t=2415
- Thu Aug 02, 2007 8:42 pm
- Forum: Mac
- Topic: Matroska Chapters
- Replies: 22
- Views: 4416
- Wed Aug 01, 2007 7:22 pm
- Forum: Mac
- Topic: Matroska Chapters
- Replies: 22
- Views: 4416
Hi gbooker, how can we verify that chapters are being added to the MKV files? I've tried playing the files encoded with SVN 774 in mplayer but I don't see how chapters are accessed. Are you examining the file in a hex viewer? I was using Quicktime apps with Perian. Perian uses the standard for chap...
- Wed Aug 01, 2007 1:44 pm
- Forum: Mac
- Topic: Matroska Chapters
- Replies: 22
- Views: 4416
- Wed Aug 01, 2007 1:07 pm
- Forum: Bugs
- Topic: Progress bar not being displayed
- Replies: 4
- Views: 2053
Here is the fix. [NSTableView selectedRow] returns -1 when none is selected, not 0, because 0 is the index of the first element: Index: macosx/Controller.mm =================================================================== --- macosx/Controller.mm (revision 776) +++ macosx/Controller.mm (working c...
- Wed Aug 01, 2007 12:58 pm
- Forum: Bugs
- Topic: Progress bar not being displayed
- Replies: 4
- Views: 2053
For me, in the mac gui, updating from [761] to [776] broke the progress bar too. Exception in the Console: 2007-08-01 07:53:27.934 HandBrake[23370] *** NSTimer discarding exception '*** -[NSCFArray objectAtIndex:]: index (-1) beyond bounds (4)' that raised during firing of timer with target 1842000 ...
- Wed Aug 01, 2007 12:56 pm
- Forum: Mac
- Topic: Anomaly? I played a .Mov with a 5.1 AC3 sountrack in QT
- Replies: 17
- Views: 5190
I would suggest that you do the x264 within the MP4 track rather than the AVI track (just use AVI to give you the AC3 data). AVI was not designed to handle frames which display in a different order than decode, and so there are several hacks in place to make this work (such as multiple frames of dat...