From aec93ca8ad2fdf84c1837cb43016b8b9b4e7b252 Mon Sep 17 00:00:00 2001 From: Good Guy Date: Tue, 28 Feb 2023 11:46:26 -0700 Subject: [PATCH] Terje's corrections for Preserving Camcorder Media --- parts/Preserving.tex | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) diff --git a/parts/Preserving.tex b/parts/Preserving.tex index 08a306b..73d4362 100644 --- a/parts/Preserving.tex +++ b/parts/Preserving.tex @@ -51,8 +51,8 @@ cassette recorders (VCR decks), digital video hard disc recorders, and optical d % % WARNING - the next line will change it for every list for rest of document % -\setlist{noitemsep} -\begin{itemize} +%\setlist{noitemsep} +\begin{itemize}[noitemsep] \item Composite Audio/Video is encoded on one channel with maximum horizontal resolution 240 (250) dots (or visually resolvable vertical picture lines) for VHS/VHS-C and 280 dots for Video8 (2.7MHz video bandwidth). \item In comparision, horizontal resolution bandwidth for PAL broadcast: 5.0-5.5 MHz, NTSC: 4.2 MHz. @@ -67,7 +67,7 @@ same number of vertical resolution (or visible horizontal scan lines); always 57 \subsection{SVHS (Super VHS, 1987), SVHS-C (-Compact, 1987) and Hi8 (1989)}% \label{sub:svhs1987} -\begin{itemize} +\begin{itemize}[noitemsep] \item S-Video (separate video, Y/C) encodes video \href{https://en.wikipedia.org/wiki/Luma\_(video)}{luma} (brightness/contrast/black\&white) and \href{https://en.wikipedia.org/wiki/Chrominance}{chrom}\href{https://en.wikipedia.org/wiki/Chrominance}{a} (color) on @@ -88,7 +88,7 @@ and white phono line connectors for audio. \subsection{\textbf{DV (1995), Digital8 (1999)}}% \label{sub:dv1995} -\begin{itemize} +\begin{itemize}[noitemsep] \item DV refers to a family of codecs and tape formats used for storing digital video, especially on MiniDV cassettes, the most popular tape format, or on Digital8 cassettes using a DV codec. \item DV codecs are still sometimes used when dealing with legacy standard definition SD video: \newline\hspace*{.5cm}PAL: 625i50, 720 {\texttimes} 576 frame size, 25 fps, 8 bit 4:2:0 subsampling @@ -116,7 +116,7 @@ video player, to convert analog to digital output via Firewire \textbf{dv} file \label{sub:DVD-Video} DVD-Video discs are intended for full-length movies and offer a range of features including the following: -\begin{itemize} +\begin{itemize}[noitemsep] \item Playing time: a nominal 133 minutes playing time for DVD-5 or each side of a DVD-10 and 240 minutes for DVD-9 using opposite track path format. In practice playing times are often reduced in favour of improved quality. \item Video encoding: MPEG-2 (\href{mailto:MP@ML}{MP@ML}) or MPEG-1. \item Audio Quality and Languages: Dolby Digital, DTS, MPEG-2 or Linear PCM audio for up to 5.1 channel surround sound. @@ -157,17 +157,19 @@ applications or players. \item MP2: 48 kHz sampling rate, 1 to 7.1 channels, up to 912 kbit/s. \item DTS: 48 kHz or 96 kHz sampling rate; channel layouts = 2.0, 2.1, 5.0, 5.1, 6.1; bitrates for 2.0 and 2.1 = 377.25 and 503.25 kbit/s, bitrates for 5.x and 6.1 = 754.5 and 1509.75 kbit/s. -\item File system.\\ -\item Almost all DVD-Video discs use the UDF bridge format, which is a combination of the DVD MicroUDF (a subset of UDF -1.02) and ISO 9660 file systems. The UDF bridge format provides backwards compatibility for operating systems that -support only ISO 9660. Most DVD players read the UDF filesystem from a DVD-Video disc and ignore the ISO9660 -filesystem. +\item File system: +\begin{itemize}[noitemsep] +\item Almost all DVD-Video discs use the UDF bridge format, which is a combination of the DVD MicroUDF (a subset of UDF 1.02) and ISO 9660 file systems. +\item The UDF bridge format provides backwards compatibility for operating systems that +support only ISO 9660. +\item Most DVD players read the UDF filesystem from a DVD-Video disc and ignore the ISO9660 filesystem. +\end{itemize} \end{itemize} \subsection{\textbf{HDV (2003)}}% \label{sub:HDV2003} -\begin{itemize} +\begin{itemize}[noitemsep] \item HDV was a successor format to DV with an updated video codec, and used the same MiniDV cassette format, optional specifically for HDV recording on tape with reduced drop-out rate. \item Some manufacturers offered on (larger) camera hard disk recording units capable of recording HDV both onto tape @@ -257,7 +259,7 @@ total. Ultra-HD Blu Ray is 10-bit 4:2:0 to reduce color banding, giving 1024 val total, or 64x more than 8-bit. BDMV Video encoding: -\begin{itemize} +\begin{itemize}[noitemsep] \item UDF2.5 as file system (BD-R/RE, 2005) \item M2TS file extension \item H.262/MPEG-2 Part 2 (\href{mailto:MP@HL}{MP@HL}, \href{mailto:MP@ML}{MP@ML}) @@ -268,7 +270,7 @@ BDMV Video encoding: BD Video movies have a maximum data transfer rate of 54 Mbit/s, a maximum AV bitrate of 48 Mbit/s (for both audio and video data), and a maximum video bit rate of 40 Mbit/s., BD disc capacities, each with its own data rate: -\begin{itemize} +\begin{itemize}[noitemsep] \item 25 GB (BD-R SL) \item 50, 66 GB (BD-R DL) at 72 or 92 Mbit/s (50 GB BD-R DL 4x read speed supports UHD-video) \item 100 GB (TL), 128 GB (QL) at 92, 123, or 144 Mbit/s (BD-R XL) -- 2.26.2