[CinCV TNG] Blu-ray rendering - 1440x1080 template
Terje J. Hanssen
terje at nordland-teknikk.no
Sun Dec 18 22:07:09 CET 2016
Good to hear that.
From the HDV 1080i specification at
Video Compression MPEG2 Video (profile & level: MP at H-14)
Chroma sampling format 4:2:0
Quantization 8 bits (both luminance and chrominance)
Compressed video bitstream rate ~25 Mbit/s
Compression MPEG-1 Audio Layer II
Sampling frequency 48 kHz
Quantization 16 bits
Audio modes and data rate MPEG-1 Part 3 AL 2 Stereo (2-channel) at
384 kbit/s (192 kbit/s per channel);
optional MPEG-2 Part 3 AL 2 4-channel at 96 kbit/s per channel.
For a non-expert like me, it seems like the 1080i hdv.m2t video is
compatible with BD, but more unsure about which BD (high?) profile that
will fit best for HDV's MP at H-14/4:2:0. And HDV's MPEG Audio differs
from BD's AC3.
Terje J. H
Den 18. des. 2016 17:04, skrev Phyllis Smith:
> /Is there a chance this can be put on the to-do list and included for
> testing and comparison not far away?/
> Yes, this should not be too time-consuming change and he is actually
> thinking about stopping on the Motion Stabilization work temporarily,
> which is turning out to be much more complex than expected (already
> taking 3 weeks). Usually a "not too time-consuming" change means
> about 4 hours. Your previous list of potential changes for blu-ray will
> take a lot more studying and so is further down on the "to do" list.
> But most likely the change to accommodate timezone for BD 25i as
> default will be done at the same time.
> In reference to the wikipaedia article note:
> /b MPEG-2 at 1440×1080 was previously not included in a draft version/
> /of the specification from March 2005/
> The book from which the last set of formats was setup, did not have
> the 1440 formats listed so I guess it was written prior to the specs.
> *From:* Terje J. Hanssen <terje at nordland-teknikk.no>
> *To:* cinelerra at lists.cinelerra-cv.org
> *Sent:* Sunday, December 18, 2016 7:54 AM
> *Subject:* [CinCV TNG] Blu-ray rendering - 1440x1080 template
> Googling around, this topic, 1080i HDV.m2t 1440x1080 onto Blu-ray, has
> been discussed on several video editing forums previously.
> The main consensus looks to have been:
> When your footage is HDV MPEG-2 it should be rendered to MPEG-2 using
> the Blu-ray 1440x1080-50i, 25 Mbps video stream template.
> Upscaling to 1920x1080 will involve all your work being re-encoded.
> For HDV Distribution, wikipedia says:
> * For consumer use, HDV-sourced video can be delivered on a Blu-ray Disc
> without re-encoding,
> * can be converted to AVCHD and delivered on an AVCHD disc
> * or can be downconverted to DVD-Video.
> And the HD Blu-ray format does support MPEG-2 at 1440×1080
> 1440×1080 59.94i 4:3
> 1440×1080 50i 4:3
> 1440×1080 24p 4:3
> 1440×1080 23.976p 4:3
> Cin-gg5.1 BD-render does support format templates for 1920, 1280 and
> 720, but not the 1440x1080 format at the moment.
> And I understand GG is busy ........., but yet:
> Is there a chance this can be put on the to-do list and included for
> testing and comparison not far away?
> Terje J. H
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