SD vs HD

Nta, feem ntau camcorders cia cov neeg siv yuav sau yeeb yaj duab SD thiab HD. Yog ib tug neeg tsis xav txuag tau nyiaj rau lub HD camcorder los sis TV, yog vim hais tias nws tsis tau pom SD thiab HD sib txawv. Nplooj ntawv no yuav ua kom paub koj tej theem pib paub txog SD thiab HD camcorder.

Txheem txhais (SD)

> 16:9 widescreen duab
> Paub daim duab zoo - DVD zoo zoo li
> MPEG cov lub tso suab suab - CD zoo zoo li
> Ib co kev pab cuam txhais Standard yog enhanced nrog Dolby Pro Logic surround suab
> Standard txhais broadcasts kis ntawm txhua lub sij hawm - 24 teev tauj ib hnub, 7 hnub hauv ib lub lis piam
> Ntxiv raws thiab tej koob yees duab views yog tshaj tawm hauv xov hauv Standard txhais

SD duab rooj Yog SD duab daws teeb meem:-576i (576 txoj kab interlaced)

Siab txhais (HD)

> 16:9 widescreen duab
> HD daim duab kho - siab muaj duab zoo (thaum pub rau ib cov zaub HD)
> MPEG cov tso suab suab thiab, nyob rau xaiv cov kev pab cuam, Dolby cov suab
> Ib co broadcasters yog tam sim no kis ib tug xov tooj ntawm cov kev pab cuam txhais siab
> Rau lub yim hli ntuj xyoo 2002 tsoom fwv tshaj tawm nws yuav nrhiav kev hloov txhua tus broadcaster HD nyiaj npaj rau qhov yuav tsum tau annualized 1040 teev. Cov nqi uas yuav commence ntawm 1 lub Xya hli ntuj xyoo 2003 mainland peev lub zos, thiab tsis muaj ua ntej xyoo 2005 rau lwm thaj chaw. Cov kev pab cuam nyob hauv HD yuav kuj tau ib txhij tshaj tawm hauv xov hauv SD.
> Ib HD-DR yuav tau txais SD broadcasts, kom niam lub HD tuav tau SD transmissions cov thaum HD
broadcasts yeej tsis tau kis tus kab mob.

Txheem txhais zaub uas yuav kho tau:

Hom ntawv video (WxH)	Lub npe	Pixel nam piv (W:H) (txuj 4:3)	Pixel nam piv (W:H) (Anamorphic 16:9)	Hauj lwm lawm
640 x 480		4:3		Siv tau siv rau hauv YouTube
720 × 576	576i	5:4	64:45	Siv rau hauv cov NPAWG D1/DV (ITU-R 601)
704 × 576	576p	12:11	16:11	Siv rau hauv cov NPAWG EDTV
720 × 480	480i	8:9	32:27	Siv rau DV NTSC
720 × 486	480i	8:9	32:27	Siv rau D1 NTSC (ITU-R 601)
704 × 480	480p	10:11	40:33	Siv rau EDTV NTSC

Txhais zaub uas yuav kho:

Daws teeb meem (W × H)	Pixels	Nam piv	Hom ntawv video	Hauj lwm lawm	Bitrate (Mbps)	Cia (MB) rau 1 min
1024 × 768	786,432	16:9 (uas tsis yog-xwmfab pixels)	720p/XGA	Siv rau PDP HDTV lus nrog cov square pixels	135	1012
1280 × 720	921,600	16:9	720p-HDTV txheem hom	Thawj kauj ruam mus tiag 1080p HD, saib nram qab no (HD)	158	1187
1440 × 1080	1,555,200	16:9	1080i	Siv rau ib feem ntau cov HDTVs, thiab yog 'ib nrab' ntawm 1080p vim nws cov interlacing (i)	266	xyoo 2002
1280 × 1080	1,382,400	16:9 (uas tsis yog-xwmfab pixels)	1080p	Siv rau hauv cov lus PDP HDTV (tag nrho HD, HD npaj 1080p)	237	1780
1920 × 1080	2,073,600	16:9	1080p-HDTV txheem hom	Siv hom HDTV yees (tag nrho HD, HD npaj 1080p)	356	2670
3840 × 2160	8,294,400	16:9	2160p DCI xinesmas 4k txheem hom ntawv (4096 × 2160)	Plaubâ € ¦ HDTV, (muaj yog tsis npaj HD 2160p plaubâ € ¦ HDTV hom)	1424	10679

Daim duab HD rooj HD duab daws teeb meem yuav muab ib los yog ntau tshaj ntawm cov nram no:
576p (txoj kab 576 nhyav)
720p (720 txoj kab hnyav)
1080i (1080 txoj kab interlaced)

Tej hom kev tshuaj ntsuam camcorders
Txheem txhais Canon FS10
Canon FS100
Tig video ultra series
JVC GZ-MG630
JVC GZ-MG680
JVC GZ-MS120
Panasonic NV-GS330
Panasonic SDR-S26
Siab txhais Canon HF10
Canon HF100
Canon HV30
Panasonic HDR-SD20
Sony HDR-HC9
Sony HDR-XR200