Linked by Eugenia Loli on Wed 5th Oct 2005 07:44 UTC, submitted by Dan
FreeBSD BSDForums interviews FreeBSD Release Engineering Team's Scott Long relating to various aspects of FreeBSD. Topics discussed include FreeBSD general issues, its academic roots, how FreeBSD compares to other BSDs - OpenBSD, NetBSD, and the ongoing debate on FreeBSD vs. Linux. Scott gives us his perspective on the corporate adoption and popularity of FreeBSD. He brings us up to speed on FreeBSD 6.0, its new features and enhancements, including Apple G4 PowerMac, AMD64 and wireless compatibility. Scott also discusses FreeBSD 6.0's upgrade path and release timetable.
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RE[3]: mencoder ffmpeg
by molnarcs on Wed 5th Oct 2005 22:28 UTC in reply to "RE[2]: mencoder ffmpeg"
molnarcs
Member since:
2005-09-10

"what kind of encoding times are you getting when going to say mpeg4 using mencoder on say a 2 hour movie and 2 two encoding?"

oh, there are so many options that can slow down encoding... you can't calculate time based solely on the codec used and the lenght of the movie. I don't have any idea how fast it would go without any options. But: apply a light denoise filter (hqdn3d=2:1:2) and encoding speed decreses by ~10%. use v4mv (4 motion vectors) which decreases speed by another 10. trellis quantization, mbd=2, etc - all will decrease speed. Now on my sempron 3100+, with almost ALL the cpu intensive options turned on, doing bicubic sofware scaling and all, I get 8-10 frames/sec. If I turn those options off, I'd probably get 25-30 or even more. I know this because I can rip tv programmes directly into mpeg-4 (which needs at least 25 fps - real time encoding) using mencoder, with some options (v4mv, deblocking filters) turned on. Check out this script: ftp://hatvani.unideb.hu/pub/FreeBSD/ADDONS/docs/TV_ENCODE/rip.sh

If you have further questions email me at molnarcsATgmail.com - I don't want to drive this further off topic... (I might claim that the above script is a good template for encoding from TV on FreeBSD though ;) ))

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