Re: [Mjpeg-users] Re: Mjpegtools 1.6.2 release candidate 1(1.6.1.90) (Ronald Bultje)
Hey Steven, On Tue, 2003-08-26 at 18:00, Steven M. Schultz wrote: > It'll probably take 24 hours for SF to catch up but perhaps Ronald > will be creating a new release candidate tarball in a couple days > or so. I'll wait for Martin to commit some of his proposed fixes for other issues in jpeg2yuv. After that, I'll do a new RC (.91), let it float around for a week and finally release 1.6.2 or so. Ronald -- Ronald Bultje <[EMAIL PROTECTED]> --- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Re: Mjpegtools 1.6.2 release candidate 1 (1.6.1.90)(Ronald Bultje)
On Mon, 25 Aug 2003, Steven M. Schultz wrote: > Typo. The default limit for both formats (DVD and DVD-like) > is 7500. For now rely on the usage summary (mpeg2enc -h) until > the manpage is repaired. I've fixed the manpage for mpeg2enc and the -f 8 and -f 9 description reversal has been taken care of (as has the mention of the default bitrate for -f 9 which is 7500, the same as for -f 8). It'll probably take 24 hours for SF to catch up but perhaps Ronald will be creating a new release candidate tarball in a couple days or so. Cheers, Steven Schultz --- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Re: Mjpegtools 1.6.2 release candidate 1 (1.6.1.90)(Ronald Bultje)
On 25 Aug 2003, Florin Andrei wrote: Not sure if/when this'll make it out - SF's mail system apparently has its knickers twisted. Sigh. > So, when looking at the man pages for the release candidate, i noticed > that "-f 9" is the new thing. Ai. If you're making DVDs then '-f 9' is absolutely the wrong thing to use because it leaves out the NAV packets that are needed. > In the mpeg2enc man page, there's a mention about -f 9 being more > appropriate for dvdauthor. The man page is wrong ;( Looks like the mpeg2enc manpage hasn't been updated sufficiently. > So, which way is recommended? Use -f 9 on both mpeg2enc and mplex when > authoring with dvdauthor? Or use -f 8? > Does it depend on the dvdauthor version? Use -f 8. There was a (thankfully brief) period when the new format (what is now -f 9) was added but the roles were reversed (which broke everyone's scripts of course). That was fixed (by leaving -f 8 as it had been and using 9 for the new format) but the manpage was apparently not reverted. At least we know folks are reading the manpages ;) > Also, why the bitrate for -f 9 is set to 10200 kbps? Isn't that too > high? (i thought there's a limit imposed by the DVD standard that's > quite close to 10 Mbit) Typo. The default limit for both formats (DVD and DVD-like) is 7500. For now rely on the usage summary (mpeg2enc -h) until the manpage is repaired. Steven Schultz --- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Re: Mjpegtools 1.6.2 release candidate 1(1.6.1.90) (Ronald Bultje)
On Mon, 2003-08-25 at 09:58, Steven M. Schultz wrote: > There were issues with mplex and mpeg2enc that caused problems > (2GB limit, timestamps, etc) with some DVD players. Also some > fixes were made to interoperate with dvdauthor - dvdauthor had > some misassumptions about the MPEG2 header format and mplex > knows (now) how to work around those. So, when looking at the man pages for the release candidate, i noticed that "-f 9" is the new thing. In the mpeg2enc man page, there's a mention about -f 9 being more appropriate for dvdauthor. But in the mplex man page there's no such mention, and the explanations are not quite clear (at least to me). I made quite a few DVDs with -f 8 using the release candidate and then authored them with dvdauthor-0.5.3 and so far i had no issues with that. So, which way is recommended? Use -f 9 on both mpeg2enc and mplex when authoring with dvdauthor? Or use -f 8? Does it depend on the dvdauthor version? Also, why the bitrate for -f 9 is set to 10200 kbps? Isn't that too high? (i thought there's a limit imposed by the DVD standard that's quite close to 10 Mbit) -- Florin Andrei http://florin.myip.org/ --- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Re: Mjpegtools 1.6.2 release candidate 1 (1.6.1.90)(Ronald Bultje)
> I've found that doing as much as possible in 4:1:1 and converting > to 4:2:0 at the last moment produces better looking output at > > If you have a recent ffmpeg on the system (do a 'make' but skip > the 'make clean') then build the smilutils with something like: > > ./configure --with-avcodec \ >--with-avcodec-include=/usr/local/src/ffmpeg/libavcodec A bit of followup (and hopefully clarification ;)). In addition to the benefits of processing keeping the data in DV (4:1:1) format as long as possible using ffmpeg's DV decoder produces (from what I have seen) better "YUV4MPEG2 411" output than libdv does. You can see the effect by converting a frame using both methods to PPM and viewing the PPM files with the GIMP or other utility. The exact "why" libavcodec's output is apparently better than libdv's is unknown so far (if some one figures it out it'd be nice to hear about it ;)). Cheers, Steven Schultz --- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Re: Mjpegtools 1.6.2 release candidate 1 (1.6.1.90)(Ronald Bultje)
On Mon, 25 Aug 2003, William R Sherman wrote: > Well then three cheers to Steven: > Hip hip hooray You can say that after the gaffe I made with the Red/White/Yellow connectors? ;) Gee thanks! > One question though, the past couple days people have mentioned that one > should use the DV capabilities of the ffmpeg library rather than some > other library, and it isn't clear to me if I'm using dvgrab and/or kino > to capture video, am I using the wrong thing? I have a very recent version > of ffmpeg (to get the Sorenson-3 decoding), but I don't recall which > application uses which library. For capturing 'dvgrab' is my tool of choice also. Capturing and decoding to 4:2:0 for mpeg2enc are two different things though. dvgrab/kino store the data as 4:1:1 (for NTSC) but at some point in time that needs to be converted to 4:2:0 for encoding to MPEG-2 I've found that doing as much as possible in 4:1:1 and converting to 4:2:0 at the last moment produces better looking output at a lower bitrate. At least 2 of the filters (yuvdenoise and yuvmedianfilter) support the 4:1:1 colorspace - thus they can work on the data prior to 4:2:0 conversion. If you have a recent ffmpeg on the system (do a 'make' but skip the 'make clean') then build the smilutils with something like: ./configure --with-avcodec \ --with-avcodec-include=/usr/local/src/ffmpeg/libavcodec Then use "smil2yuv -i 2 ... | yuvdenoise | yuvmedianfilter ... " Immediately prior to going into the encoder (mpeg2enc) use y4mscaler to convert from 411 to 420: y4mscaler -O chromass=420_mpeg2 > > to 1.6.1. Most importantly, this release allows full-fledged DVD > > creation. > > And like one other reader, I'm curious as to what exactly this means. > Haven't we already been making full-fledged DVD's, and in my case, There were issues with mplex and mpeg2enc that caused problems (2GB limit, timestamps, etc) with some DVD players. Also some fixes were made to interoperate with dvdauthor - dvdauthor had some misassumptions about the MPEG2 header format and mplex knows (now) how to work around those. Cheers, Steven Schultz --- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
