On Feb 12, 2:49 pm, "Ron N." <rhnlo...@yahoo.com> wrote:> 1) There is more than one format for uncompressed digital > audio (a *lot* more if you have to deal in cross-platform > and legacy format conversion tools).Would you mind naming one?
Uncompressed Digital Video vs. Uncompressed Digital Audio
Started by ●February 12, 2007
Reply by ●February 12, 20072007-02-12
Reply by ●February 12, 20072007-02-12
On Feb 12, 5:44 am, "Arny Krueger" <a...@hotpop.com> wrote:> RGB is analog, not digital, so this is not a reasonble question.Bob Myers says in http://groups.google.com/group/ sci.electronics.basics/msg/bbad436d1cb6cd02?hl=en& : "RGB simply means "red, green, and blue" video - it clearly can be represented in either analog or digital form." Not trying to side with either party or start a battle, sorry if it seems that way.
Reply by ●February 12, 20072007-02-12
"Radium" wrote ...> "Ron N." wrote: > >> 1) There is more than one format for uncompressed digital >> audio (a *lot* more if you have to deal in cross-platform >> and legacy format conversion tools). > > Would you mind naming one?You can look it up yourself. You don't have to take our word for it. http://en.wikipedia.org/wiki/List_of_codecs#Non-compression_formats No point to typing this for you here when it is already available.
Reply by ●February 12, 20072007-02-12
"Radium" wrote ...> Why is it that uncompressed digital video can have so many format > [such and RGB as well as linear PCM]"RGB" and "linear PCM" are not two different "format"s.> but uncompressed digital audio > can only have one format -- PCM??Here we go again. Maybe you better define what YOU mean by "format"? Do you mean encoding scheme? Do you mean codec? etc. etc. etc. Else you are likely to start another pointless thread where people argue about what you mean. It would also be helpful to reveal WHY you are asking so maybe we can figure out WHAT you are asking.
Reply by ●February 12, 20072007-02-12
On Feb 12, 6:54 pm, "Richard Crowley" <rcrow...@xp7rt.net> wrote:> You can look it up yourself. You don't have to take our word for >it.http://en.wikipedia.org/wiki/List_of_codecs#Non-compression_formats > No point to typing this for you here when it is already available.Seems like all of them are PCM.
Reply by ●February 12, 20072007-02-12
On Feb 12, 6:59 pm, "Richard Crowley" <rcrow...@xp7rt.net> wrote:> It would > also be helpful to reveal WHY you are asking so maybe > we can figure out WHAT you are asking.What is the most common type of uncompressed digital video? Is it a type of PCM format? If not, what is it and why isn't PCM video -- like the PCM audio in CDs -- used? Basically, I am looking for the "video equivalent" of CD audio.
Reply by ●February 12, 20072007-02-12
"Radium" <glucegen1@excite.com> wrote in message news:1171336438.850343.208800@k78g2000cwa.googlegroups.com...> Seems like all of them are PCM.If you actually knew what PCM was the acronym for, you might realise that Arny already mentioned other schemes. Just because they are not as common, doesn't mean alternate schemes do not exist. MrT.
Reply by ●February 12, 20072007-02-12
"Radium" wrote ...> "Richard Crowley" wrote: > >> You can look it up yourself. You don't have to take our word for >> >it.http://en.wikipedia.org/wiki/List_of_codecs#Non-compression_formats >> No point to typing this for you here when it is already available. > > Seems like all of them are PCM.That is because "PCM" is an archaic name for "digital". (PWM/PDM were similar archaic terms/schemes.) It was coined at Bell Labs when digital audio was first implemeted as a lab experiment. It has no practical meaning today and causes more confusion than just using the proper modern term.
Reply by ●February 12, 20072007-02-12
"Radium" <glucegen1@excite.com> wrote in message news:1171336723.070573.285130@s48g2000cws.googlegroups.com...> Basically, I am looking for the "video equivalent" of CD audio.It would be nice if there was one single video format as common as CD audio I guess. The nearest equivalent would obviously be standard DVD, MPEG-II, but unfortunately you still have the country dependant format variations for frame size and frame rate etc. However even PCM audio you first asked about, comes in a lot more formats than 16/44.1 CD audio you now mention, so they are not that dissimilar after all. MrT.
Reply by ●February 12, 20072007-02-12
"Richard Crowley" <rcrowley@xp7rt.net> wrote in message news:53cpbkF1s4sfbU1@mid.individual.net...> That is because "PCM" is an archaic name for "digital". > (PWM/PDM were similar archaic terms/schemes.)Not so. They are all more specific descriptions of the digital coding used. "Digital" is simply a more generic term. It's the same as saying FM and AM are both analog "radio broadcast" methods. Some people need to understand the difference, and some don't care. MrT.
