On 08/20/2015 10:27 AM, Alice Wonder wrote:> I bought a BluRay for my Thinkpad and my Desktop. > > Very rarely use them, but on occassion I do. > > When I use them, I use them to rip movies via MakeMKV but honestly that > is the only BluRay use they ever get. And mostly the desktop, the laptop > doesn't have the memory to encode hi def in reasonable amount of time.How much memory do you think would be needed to do that?> > Unless you want to rip movies, which may violate certain laws in certain > geographical locations, there's not any point that I can see. > > On 08/20/2015 03:53 AM, ken wrote: >> One of the build options for a laptop I'm looking at buying is DVD vs >> Blu-Ray. I've never used Blue-ray before, so is there some compelling >> reason, as a Linux guy, to want to get Blu-ray?Congratulations, Alice. You're the sole nerd here to mention that this was possible. I've never ripped a flick before, but I could imagine doing it, so it's good to know it can be done with Linux. I'm suprised no one yet has mentioned authoring movies. Maybe the software to do this isn't available for Linux???
On 08/20/2015 10:27 AM, ken wrote:> On 08/20/2015 10:27 AM, Alice Wonder wrote: >> I bought a BluRay for my Thinkpad and my Desktop. >> >> Very rarely use them, but on occassion I do. >> >> When I use them, I use them to rip movies via MakeMKV but honestly that >> is the only BluRay use they ever get. And mostly the desktop, the laptop >> doesn't have the memory to encode hi def in reasonable amount of time. > > How much memory do you think would be needed to do that?I don't know, but my desktop has 16 GB and the laptop only has 4 GB (and a slower CPU)
On Aug 20, 2015, at 1:03 PM, Alice Wonder <alice at domblogger.net> wrote:> > On 08/20/2015 10:27 AM, ken wrote: >> On 08/20/2015 10:27 AM, Alice Wonder wrote: >>> I bought a BluRay for my Thinkpad and my Desktop. >>> >>> Very rarely use them, but on occassion I do. >>> >>> When I use them, I use them to rip movies via MakeMKV but honestly that >>> is the only BluRay use they ever get. And mostly the desktop, the laptop >>> doesn't have the memory to encode hi def in reasonable amount of time. >> >> How much memory do you think would be needed to do that? > > I don't know, but my desktop has 16 GB and the laptop only has 4 GB (and a slower CPU)An uncompressed 4:2:0 frame of 2K video takes about 2.5 MiB of RAM. If you represent it as 4:4:4 during recompression instead, it?s 6 MiB. An H.264 encoder might need a dozen or so frames in RAM at a time to do the inter-frame compression, so you?re talking about something like 30-100 MiB of RAM. Some encoders are inefficient, and grab a gig or so of RAM, but I expect that?s only because they can get away with it these days. It?s possible to be much more efficient, evidenced by the fact that so many smartphones and digital cameras have H.264 encoders in them. You don?t imagine they have a gig of RAM sitting around just for the H.264 encoder, do you? The main thing you need for fast video encoding is one of: a) multiple fast general-purpose CPU cores b) lots of GPU pipelines, or c) a dedicated hardware ASIC (or equivalent in die space on a SoC) It?s all down to processing power, not RAM. Video encoding is a big reason that the Intel Core i7 made such a big splash about 5 years ago. It?s one of the few desktop applications that can make effective use all those fast cores. GPU encoding has also made great strides recently.
> -----Original Message----- > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On > Behalf Of ken > Sent: den 20 augusti 2015 19:27 > To: CentOS mailing list > Subject: Re: [CentOS] new laptop: DVD or Blu-ray > > I'm suprised no one yet has mentioned authoring movies. Maybe the > software to do this isn't available for Linux???I use Openshot Video Editor on a weekly basis to cut and edit my m/c-instructoring clips and then post to Youtube. ;-) I've more or less abandoned Pinnacle since I discovered Openshot. The encoding stuff is so much faster on CentOS than Windows... -- //Sorin
Sorin, authoring a movie usually refers to actually creating a disc (e.g. DVD/Blu-Ray with chapter marks and what not). It's the step that comes after you've shot and edited the movie, see https://en.wikipedia.org/wiki/DVD_authoring. As far as I know K3B, Bombone DVD and DeVede are capable of authoring DVDs. K3B (version dependent) should even be able to create Blu-Ray discs so that they are playable on standalone players. Kind Regards Chris On Fri, Aug 21, 2015 at 8:23 AM, Sorin Srbu <Sorin.Srbu at orgfarm.uu.se> wrote:> > > > -----Original Message----- > > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On > > Behalf Of ken > > Sent: den 20 augusti 2015 19:27 > > To: CentOS mailing list > > Subject: Re: [CentOS] new laptop: DVD or Blu-ray > > > > I'm suprised no one yet has mentioned authoring movies. Maybe the > > software to do this isn't available for Linux??? > > I use Openshot Video Editor on a weekly basis to cut and edit my > m/c-instructoring clips and then post to Youtube. ;-) > I've more or less abandoned Pinnacle since I discovered Openshot. The > encoding > stuff is so much faster on CentOS than Windows... > -- > //Sorin > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > >
On Fri, 2015-08-21 at 06:23 +0000, Sorin Srbu wrote:> I use Openshot Video Editor on a weekly basis to cut and edit my > m/c-instructoring clips and then post to Youtube. ;-) > I've more or less abandoned Pinnacle since I discovered Openshot. The > encoding stuff is so much faster on CentOS than Windows...Where does one obtain the RPM for Centos 5 and 6, please ? -- Regards, Paul. England, EU. England's place is in the European Union.