Re: [Mjpeg-users] mpeg2enc: status of low quality settings on ix86

2007-05-13 Thread Steven M. Schultz
On Mon, 14 May 2007, Jonathan Woithe wrote: Ok, I must be blind. Ever since the issue came to light I've been watching for news on it but I never saw anything. I was referring to -q discussion in general. It felt to me that have been many threads of discussion about

[Mjpeg-users] mpeg2enc: status of low quality settings on ix86

2007-05-10 Thread Jonathan Woithe
Hi all For a long time there have been known issues with encoding at low quality factors such as q=2 (ie: high quality encoding) on ix86. I understand this was due to something related to potential overflows in some parts of the MMX code. From memory the general recommendation from a year or so

Re: [Mjpeg-users] mpeg2enc: status of low quality settings on ix86

2007-05-10 Thread Mark Heath
Interestingly enough I attempted using mpeg2enc as a change (from ffmpeg) just to see how things were progressing. I had just compiled the mjpeg suite on my g5, to do some NTSC to PAL conversion. I used the following settings: mpeg2enc -f 8 -q 2 -M 8 I couldn't get it using more than 2 of

Re: [Mjpeg-users] mpeg2enc: status of low quality settings on ix86

2007-05-10 Thread Steven M. Schultz
On Fri, 11 May 2007, Jonathan Woithe wrote: For a long time there have been known issues with encoding at low quality factors such as q=2 (ie: high quality encoding) on ix86. I understand this Not -q again. Seems like just yesterday there was (yet another) discussion about