High quality encoding of anime
Hi all, I am backing up part of my anime collection, and therefore I am looking for good quality settings. The video bitrate available after the audio coding is around 1720 kbps, and I was thinking of using a 640x480 resolution based on the recommendations of the calcbpp.pl script. (The video is PAL, interlaced, 25fps, and 4/3 aspect ratio). I have a *very* fast PC which is always on, so encoding time is not an issue. I have read plenty of forums and threads on this mailing list concerning best quality options for lavc and XviD, but sometimes too much information can confuse rather than enlighten, if you know what I mean... Anyway, my questions are very direct: - lavc or XviD for anime at high bitrates? - for lavc, is qprd safe to use? - what parameters to use for hqdn3d filter? - what is the current consensus about B-frames? Here are the options I currently use for the second-pass: (I am using two-pass encoding, obviously) Pre-processing: -zoom -sws 9 -vf pp=lb,crop=688:560:18:8,hqdn3d=2:1:2,scale=640:480 For lavc: vcodec=mpeg4:vbitrate=1720:vpass=2: vmax_b_frames=2:vb_strategy=1: vme=4:preme=2:predia=4:dia=4:last_pred=3: precmp=10:cmp=10:subcmp=10:mbcmp=10: mbd=2:v4mv:cbp:mv0:qprd:trell:qns=3 For XviD: bitrate=1720:pass=2: packed:max_bframes=2: vhq=4:me_quality=6: quant_type=h263: cartoon:trellis: chroma_me:chroma_opt Thanks in advance for any help you can give me! My backups will be eternally grateful... Cheers, Jean __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/
On Tue, Apr 19, 2005 at 06:00:21AM -0700, Jean Hoderd wrote:
Hi all,
I am backing up part of my anime collection, and therefore I am looking for good quality settings. The video bitrate available after the audio coding is around 1720 kbps, and I was thinking of using a 640x480 resolution based on the recommendations of the calcbpp.pl script. (The video is PAL, interlaced, 25fps, and 4/3 aspect ratio).
Anime is never interlaced, always telecined. If your PAL discs show combing, they might have been framerate-converted from NTSC rather than remastered, meaning basically they suck. Just download your "backups" instead. On the other hand, you can _try_ using one of the inverse telecine filters (pullup or maybe filmdint is the most likely to work) and see if it's some strange kind of PAL telecine, but don't hold your breath.. Also with that much bitrate available I'd keep the original 704x576 resolution rather than scaling down.. Rich
Rich Felker wrote:
Also with that much bitrate available I'd keep the original 704x576 resolution rather than scaling down..
I would second that emphatically. Don't scale at all and you will get much better results.
On Tue, Apr 19, 2005 at 06:00:21AM -0700, Jean Hoderd wrote:
(The video is PAL, interlaced, 25fps, and 4/3 aspect ratio).
Rich Felker wrote:
Anime is never interlaced, always telecined.
Do you mean PAL Anime is never interlaced? This page: http://www.animemusicvideos.org/guides/avtech/video2.htm shows an example of awful interlacing in an Anime DVD but it's from an NTSC version. The site has some other tips on converting Anime video that may be helpful.
participants (4)
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Jean Hoderd -
Phil Ehrens -
Rich Felker -
Scott W. Larson