Classic Mac OS Software (Discussions on Applications) > Video Capturing & Editing Software

Final Cut Pro 3.0

<< < (2/7) > >>

MacTron:

--- Quote from: Protools5LEGuy on April 17, 2015, 01:14:48 AM ---... If you give FCP the video in DV codec (or the MJPEG) ...

--- End quote ---

MJPEG ...
DV ?

LOL

devils_advisor:
dont under estimate mjpg. most video cards used that codec to capture back in the days, even the big ones m100 for example. dv is fixed rate so any harddrive could work with it since it is just a moving data from medium to medium. there is no real capture involved technically. but if you go via hardware its a different story.

Protools5LEGuy:

--- Quote from: MacTron on April 17, 2015, 05:26:22 AM ---
MJPEG ...
DV ?

LOL

--- End quote ---
>:(
http://en.wikipedia.org/wiki/Motion_JPEG


--- Quote ---In multimedia, Motion JPEG (M-JPEG or MJPEG) is a video compression format in which each video frame or interlaced field of a digital video sequence is compressed separately as a JPEG image. Originally developed for multimedia PC applications, M-JPEG is now used by video-capture devices such as digital cameras, IP cameras, and webcams; and by non-linear video editing systems. It continues to enjoy native support by the QuickTime Player, the PlayStation console, and browsers such as Safari, Google Chrome, and Mozilla Firefox.
--- End quote ---

http://en.wikipedia.org/wiki/DV


--- Quote ---DV uses lossy compression of video while audio is stored uncompressed.[2] An intraframe video compression scheme is used to compress video on a frame-by-frame basis with the discrete cosine transform (DCT).

Closely following ITU-R Rec. 601 standard, DV video employs interlaced scanning with the luminance sampling frequency of 13.5 MHz. This results in 480 scanlines per complete frame for the 60 Hz system, and 576 scanlines per complete frame for the 50 Hz system. In both systems the active area contains 720 pixels per scanline, with 704 pixels used for content and 16 pixels on the sides left for digital blanking. The same frame size is used for 4:3 and 16:9 frame aspect ratios, resulting in different pixel aspect ratios for fullscreen and widescreen video.[3][4]

Prior to the DCT compression stage, chroma subsampling is applied to the source video in order to reduce the amount of data to be compressed. Baseline DV uses 4:1:1 subsampling in its 60 Hz variant and 4:2:0 subsampling in 50 Hz variant. Low chroma resolution of DV (compared to higher-end digital video formats) is a reason this format is sometimes avoided in chroma keying applications, though advances in chroma keying techniques and software made producing quality keys from DV material possible.[5][6]

Audio can be stored in either of two forms: 16-bit Linear PCM stereo at 48 kHz sampling rate (768 kbit/s per channel, 1.5 Mbit/s stereo), or four nonlinear 12-bit PCM channels at 32 kHz sampling rate (384 kbit/s per channel, 1.5 MBit/s for four channels). In addition, the DV specification also supports 16-bit audio at 44.1 kHz (706 kbit/s per channel, 1.4 Mbit/s stereo), the same sampling rate used for CD audio.[7] In practice, the 48 kHz stereo mode is used almost exclusively.
--- End quote ---

I have a Sony Digital8 camera http://en.wikipedia.org/wiki/Digital8. A iLink (FireWire) http://www.testfreaks.co.uk/digital-camcorders/sony-dcr-trv-145/
. It has blocked the ability to Convert DV in to analog video. It is firewire "output" only but some Sony high end models allowed it.

DV and Digital8 was State of the Art on last nineties, the golden age of OS 8-9. But today noone wants to capture video. Tapeless cameras based on P2 or CF or SD or SSD media takes less time to ingest video on cutter station machines.

Also I have a Canon based on Video8. So I have over 20 tapes. I will capture that oldschool camera with a cheap 10$ USB 2.0 on OSX.

MacTron:

--- Quote from: Protools5LEGuy on April 17, 2015, 06:15:46 AM ---I have a Sony Digital8 camera

--- End quote ---

Yes I had one of this too. I have used one or twice ...


--- Quote from: MacTron on April 17, 2015, 05:26:22 AM ---MJPEG ...
DV ?
LOL

--- End quote ---

The DV format has born too limited. And in short became obsolete. Too limited in resolution and compression. And most of the dv codecs are really bad quality, including Apple ones.
Even the primitive MJPEG codec is really better than DV ...

devils_advisor:
there is dv25 dv50 and so on they all have different (higher bitrates) up to the point where the internal ide drive cant be used anymore for realtime capture/playback

Navigation

[0] Message Index

[#] Next page

[*] Previous page

Go to full version