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Encoding progressive NTSC material with Canopus Procoder 1.5?

zee944 posted 2008 Oct 08 12:14

Hey Everybody, could somebody tell me how to encode NTSC film material to an NTSC DVD compliant .M2V? The material is already 720x480 29.97i fps, with proper 3:2 telecined pattern. I've tried out a few variants so far in Procoder (Field order, Force Film mode etc.) with no luck. I've always ended up with ugly interlaced edges during playback. Factory-made NTSC DVDs are fine, mine is not. :( (I've authorized the DVD with muxman) I use Procoder 1.5, I'd like to use this software to encode. Thanks for any help in advance :)

45tripp posted 2008 Oct 10 01:06

wow, 1.5, could hardly remember is there's avisynth support... Procoder only added a dedicated ivtc filter at version 3. still... no reason to mess about with even that. dgindex, avisynth, encode in procoder with a generic mpwg2 template to go to 23.976 progressive, pulldown output in dgpulldown. tripp

zee944 posted 2008 Oct 10 05:06

45tripp : wow, 1.5, could hardly remember is there's avisynth support... Procoder only added a dedicated ivtc filter at version 3. still... no reason to mess about with even that. dgindex, avisynth, encode in procoder with a generic mpwg2 template to go to 23.976 progressive, pulldown output in dgpulldown. tripp Thank you for the response! :) Procoder 1.5 has AviSynth support, actually the file I want to encode is an AviSynth file. I've done the 23.976p-->29.97i conversion myself in the script, so I can make it back to 23.976. (I don't what mpwg2 is, I hope I won't need that in this case.) Will DGPullDown convert a 23.976p M2V file into a proper 3:2 29.97i M2V format?

manono posted 2008 Oct 10 05:13

: Will DGPullDown convert a 23.976p M2V file into a proper 3:2 29.97i M2V format? Yes. : I've done the 23.976p-->29.97i conversion myself in the script Why on Earth would you do that? You get much greater encoder efficiency encoding for progressive 23.976fps.

zee944 posted 2008 Oct 10 07:23

manono : : I've done the 23.976p-->29.97i conversion myself in the script Why on Earth would you do that? You get much greater encoder efficiency encoding for progressive 23.976fps. Because I knew the DVD compliant format should be 29.97i in the end and I didn't know I have to do this conversion after the encoding.

45tripp posted 2008 Oct 10 08:08

zee944 : Procoder 1.5 has AviSynth support, (I don't what mpwg2 is, I hope I won't need that in this case.) i know, just had to think way back... 'mpwg2' is a typo generic mpeg2 template, if you select a standard dvd template you won't get 23.976 as a framerate on the pulldown menu. or rather select the dvd template and then change dvd to user defined so you can change framerate

zee944 posted 2008 Oct 12 04:23

I've encoded the footage as 23.976p, and converted with DGPullDown into 29.97i. Seems fine (proper 3:2 pattern) except one thing: MuxMan says it's not perfectly DVD compliant: Bitrate - avg: 5997114, min: 1602305 (lba 1643706), max: 7979220 (lba 1464308). Shortest GOP has 2 fields, longest GOP has 38 fields. Fields: 371358, VOBU: 9946, Sectors: 2267765. Largest GOP of 38 fields exceeds DVD specification of 36, resulting DVD is non-standard. 13:58:49 Begin multiplex VMG. 13:58:49 End multiplex. 1 oddities detected, resulting DVD is non-standard. Check log for details What should I do?

manono posted 2008 Oct 12 05:45

: What should I do? Reencode using a lower GOP size. You use Procoder, right? I don't use it and thus have no idea how you choose GOPs, but you want a max GOP of 12 frames or 24 fields. The reason is that the GOP size increases after applying pulldown by a factor of 1.25. My guess is that you have it set up for 15 frames=30 fields.

zee944 posted 2008 Oct 13 07:56

manono : : What should I do? Reencode using a lower GOP size. You use Procoder, right? I don't use it and thus have no idea how you choose GOPs, but you want a max GOP of 12 frames or 24 fields. The reason is that the GOP size increases after applying pulldown by a factor of 1.25. My guess is that you have it set up for 15 frames=30 fields. You're right! GOP was set to 15. I've set it to 12 and now it's fine. My first proper NTSC DVD. Thanks! :)

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