On Feb 12, 7:28 pm, "Mr.T" <MrT@home> wrote:> 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.Um, MPEG is compressed. I was looking for uncompressed digital video.> 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.Yeah, these days :). There's CDR, CD-RW, CR+RW. I was taking about the common audio CDs used in the 80s. Any *uncompressed* digital video equivalent of that good ole' 80s CD audio?
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
"Radium" <glucegen1@excite.com> wrote in message news:1171337768.796797.292950@v45g2000cwv.googlegroups.com...> On Feb 12, 7:28 pm, "Mr.T" <MrT@home> wrote: > > It would be nice if there was one single video format as common as CDaudio> > I guess. The nearest equivalent would obviously be standard DVD,MPEG-II,> > but unfortunately you still have the country dependant format variationsfor> > frame size and frame rate etc. > > Um, MPEG is compressed. I was looking for uncompressed digital video.The nearest would probably be the mini DV camera format then. They're pretty common. MrT.
Reply by ●February 12, 20072007-02-12
On Feb 12, 9:20 pm, "Radium" <gluceg...@excite.com> wrote:> 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?how about the one named "Radium is just a troll jerking our chain" a.k.a. Sony SACD. it's not PCM. sometimes it's called "PDM". you must really think other people are stupid when it is you that is. r b-j
Reply by ●February 12, 20072007-02-12
"Radium" wrote ...> "Richard Crowley" > 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?What does "type" mean in your world? By "common" do you mean historic or current?> Is it a type of PCM format?It is likely not defined that way because PCM is usually used to refer to audio, not video.> If not, what is it and why isn't PCM video -- like > the PCM audio in CDs -- used?What does "PCM video" mean in your world? Does it just mean "digital video"?> Basically, I am looking for the "video equivalent" of CD audio.D1 & HDCAM SR were uncompressed component digital video formats. D2 and D3 were uncompressed composite digital video formats. All were tape formats, and none was terribly popular nor did they last very long. There are some high-end schemes for recording uncompressed video used in digital cinematography. I believe they are all hard drive-based, not tape or optical. The SDI digital video interconnection scheme used in broadcast facilities has at least one mode that will transmit uncompresed (4:4:4) video. Putting true 4:4:4 uncompressed video on a 4.7 GB DVD would give you about 4-5 minutes of playing time. (Assuming you could spin the disc fast enough to read the data in real- time) Perhaps that is why it never caught on. :-)
Reply by ●February 12, 20072007-02-12
On Feb 12, 10:18 pm, "Radioactive Boy" <gluceg...@excite.com> wrote:> 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?the difference between those different video compression formats is roughly analogous to the difference in the various audio compression formats that you claim are "all PCM". so i guess all video is PCM, from your definition.> Basically, I am looking for the "video equivalent" of CD audio.like VHS? or, maybe if you look hard, Beta-max? r b-j
Reply by ●February 12, 20072007-02-12
"Radium" wrote ...> "Mr.T" wrote: >> 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. > > Um, MPEG is compressed. I was looking for uncompressed digital video. > >> 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. > > Yeah, these days :). There's CDR, CD-RW, CR+RW.CDR, CD-RW, CR+RW are writing formats. They have nothing to do with audio except that one of their many uses is to make either data discs with audio files on them, or to burn "Red Book" audio CDs.> I was taking about the common audio CDs used in the 80s.The "common audio CDs" used today are identical to the ones from the "80s". Do you think there is some difference?> Any *uncompressed* digital video equivalent of that good > ole' 80s CD audio?Certainly not in the consumer arena and very rare in the professional one.
Reply by ●February 12, 20072007-02-12
"Mr.T" wrote ...> "Radium" <wrote... >> Um, MPEG is compressed. I was looking for >> uncompressed digital video. > > The nearest would probably be the mini DV camera > format then. They're pretty common.DV (and mini-DV and DVCAM and DVCpro25) are compressed 5:1 DVCpro50 is compressed 2.5:1
Reply by ●February 13, 20072007-02-13
"Mr.T" wrote ...> "Richard Crowley" wrote ... >> 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.Thanks for making my point.
Reply by ●February 13, 20072007-02-13
On Feb 12, 7:52 pm, "Richard Crowley" <rcrow...@xp7rt.net> wrote:> "Radium" wrote ... > > Any *uncompressed* digital video equivalent of that good > > ole' 80s CD audio? > > Certainly not in the consumer arena and very rare in the > professional one.How do these video discs looks like? Are they bigger than CDs? Do they use uncompressed digital video? If so, where could I possibly find these treasures?
Reply by ●February 13, 20072007-02-13
"Radium" <glucegen1@excite.com> wrote in message news:1171336723.070573.285130@s48g2000cws.googlegroups.com...> 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?What do you think "format" means? What do you think "PCM" means? How will you recognize a correct answer when you don't even really understand the question? Bob M.
