Timeline for FLAC --bps setting real meaning
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 30, 2016 at 22:59 | comment | added | n00dles♦ | Non-PCM formats, such as lossy compression formats, do not have associated bit depths. For example, in MP3, quantization is performed on PCM samples that have been transformed into the frequency domain. from Wikipedia | |
| Aug 30, 2016 at 22:54 | comment | added | n00dles♦ | I've always known AC3 to be the standard. I once heard off professionals, that they change the AC3 compression depending on the size of the video content. By the way, 448kbps @ 48kHz = (448/1024)bps/48000 = 9.6 bits per sample. Am I right? I'm not very good at maths. | |
| Aug 30, 2016 at 19:10 | vote | accept | truf | ||
| Aug 30, 2016 at 19:09 | comment | added | truf |
Hi, you're right I missed the fact that original DVD's track is in lossy AC3 48kHz 6 channels and 448 kb per sec. I just extracted it as AC3. But just for better understanding of a topic: I suppose if the source DVD uses 16 bit audio isn't applicable to AC3? Bcs I can't see any info about bits per sample in its codec description. Is it inapplicable to all lossy formats and is replaced by kbits per second statistic?
|
|
| Aug 30, 2016 at 18:50 | comment | added | Tetsujin | Thing is... there is no 'standard' - or there is but it's very broad - see en.wikipedia.org/wiki/DVD-Video#Audio_data [It's actually one reason I now let my computer's built-in soundcard do the decode to my 5.1 amp & transmit as analog... to save double/triple decodes to what is actually a far better decoder in the amp - just ultimately less satisfying] | |
| Aug 30, 2016 at 18:44 | comment | added | Linuxios | @tetsujin: That's a very good point - I forgot about the source media. Is the standard DVD codec for audio lossy? | |
| Aug 30, 2016 at 18:43 | comment | added | Tetsujin | It's a lovely answer - but it misses the point... what's the point in trying to grab a lossless format from a DVD, without knowing what format it is already encoded in? If it's AC3, then just rip the AC3 unchanged. It's already lossy. Re-encoding a lossy format is going to be at best just 'bigger'. | |
| Aug 30, 2016 at 3:34 | review | First posts | |||
| Aug 30, 2016 at 7:39 | |||||
| Aug 30, 2016 at 3:32 | history | answered | Linuxios | CC BY-SA 3.0 |