myowntemp

引用:

原帖由 roland22 於 2019-6-29 10:51 AM 發表

想請教一下你, 知唔知有冇一些方法或用甚麼軟件可以將一些超低解析度轉做較好畫質同較柔和化的影片?
好似TVB播卡拉屋企咁, 可以將這些舊劇, 數碼化後放返在今時今日既高解像度LCD/LED Mon到睇, 仍不會感覺太差? 這些劇如果用以前的低解像度大牛龜電視睇可能唔太覺眼, 但用今時今日的高解像度電視來看, 就會差到幾乎睇唔到的..
所以有時真係唔知TVB佢地係點整, 好有興趣想知道! ...

First of all, I apologize that I have to write in English as I don't know how to type in Chinese and even using handwriting pad would take forever for me.

Also would like to say that I am not an expert at all.

Anyway, for the most part, there isn't much we (home users) can do to enhance low quality source - unless you invest huge amount of money into commercial software and hardware (like the ones used in Hollywood and the CIA, etc).  And even at their level, the enhancement would still be somewhat limited.

By the way, I have not really ripped much video during the last few years.  That said, I currently do most of my minor adjustments using free AVIDEMUX, there are also VirtualDub/VirtualDubMod that you can try to do some editing.  In the past I used to use TMPGEnc - which is a paid software, but haven't used it for a long time as it no longer worked for me.

Just my limited experience and hope to be useful to some.

[ 本帖最後由 myowntemp 於 2019-7-2 09:21 AM 編輯 ]

roland22

回覆 11#  myowntemp 的帖子

明白, 謝謝你..

roland22

Update to.. VCD31-VCD56 end

小草2011

回覆 2#  roland22 的帖子
Thank you for share until end!!

wantoo

回覆 7#  roland22 的帖子

我十幾廿年前返過去大陸買過一套94版嘅三國﹐係國語版。都曾經試重壓過放落DVD度﹐不過其實DVD都支持352x288(240)﹐加上當年電腦冇咁快﹐每秒/3~4 f 實在太慢﹐所以後來都放棄咗。不過喺壓制時都發現到有幾點心得﹐唔介意我同你分享﹖



總括來講﹐1. 需要加重或 enhance 畫面 contrast。2. 加重或加深顏色 saturation。3. 因VCD 製作都係 progressive﹐唔再需要 de-interlace﹐祇需用軟件去 sharpen 後再柔化 (會好慢﹐先柔化再 sharpen 速度會快一倍以上)﹐4. 因為用電腦硬件添加咗 artificial pixels﹐所以加大 bitrate 係會令畫面受影響而美化(如contrast,saturation 等)。



我係用 avisynth , 已經有3年冇人再 develop 喇﹐其中某些插件除咗WinXP 之外新OS都唔支援。但上述幾嗰 function 都應該可以喺 Win7~8 以至10 都用得。我本人目前都仲保留住一部WinXP 作為壓片用。



Sample avisynth script: (only editing parts)

Source(xxxxxxxxxxxxxxx)

LanczosResize(xxxxxxxxx)

TemporalSoften(4, 4, 8, scenechange=15, mode=2) 註1

ColorYUV(Cont_Y=32, Cont_U=64, Cont_V=64, Gamma_Y=16) 註2

Tweak(1,1.2,1,1) 註3

((((sharpen Tools)))) 註4

ConvertTo---(顏色空間) 註5



註1﹕ 有好幾個 plugin﹐唔同程式分別有唔同程度嘅效果。

註2﹕ 呢個插件係本人最喜用﹐有漂白美化及令畫面呈現立體效果。

註3﹕ 基本上同 coloyuv 相同功能﹐對gamma 及 contrast 效果比較差﹐但對紅/青 顏色分界及 saturation enhanceme就一定用呢隻插件。

註4﹕ 有幾種唔同插件可選擇。

註5﹕ 有些軟件祇支援某種顏色格式。



基本上新手學avs 係辛苦過返學﹐需要有心機同耐性。不過學曉晒啲 commands 後﹐好多 dummy converters 都唔會再想用。如有興趣詢問﹐我有時間一定回覆。

http://avisynth.nl/index.php/Main_Page

myowntemp

引用:

原帖由 wantoo 於 2019-7-3 02:14 AM 發表
回覆 7#  roland22 的帖子

我十幾廿年前返過去大陸買過一套94版嘅三國﹐係國語版。都曾經試重壓過放落DVD度﹐不過其實DVD都支持352x288(240)﹐加上當年電腦冇咁快﹐每秒/3~4 f 實在太慢﹐所以後來都放棄咗。不過喺壓制時都發 ...

What you listed and said are true.   I have become so lazy (also because many of the videos can be had much easier ) now that I don't really do much editing, etc.

Just want to mention that Avidemux (also supports avisynth if choose to)  can do all without learning it.

roland22

回覆 15#  wantoo 的帖子

多謝你的推薦 , 我會試試用的..

wantoo

回覆 16#  myowntemp 的帖子,



MyOwnTemp, I have tried AVIdemux long time ago, yes it does support avisynth, but you still have to input the syntax (command), still have to learn avisynth.



There's another major issue with AVIdemux, it is that it doesn't seem to have many options on audios, in order to make sure and control the audio to sync with the video, it is best to convert audio in constant FrameRate, however the developer of avidemux probably wrote the program when hard disk space were precious, he chose to have the audio fixed in variable frame rate when converting, to save a few MB's, (or maybe there's some settings I'd missed, let me know) even if I wrote the avs script with convertFPS=true, the result file would still come out  with VFR audio. Thus I gave up on the software.



BTW, when you have time on your hand, give it a try. I started to DL VCD's in the mid 90's, and picked up avisynth in the late 90's, it took me a few years to really master (in my own term) the software, but it's really interesting and fulfilling.
有一樣嘢我差啲忘記咗﹐ 就係以前HDZone 嘅Milkyboy﹐講起發燒友﹐ 呢位兄台值得我哋 pay respect。最近喺UWANT嘅木村啲舊片就係佢壓制嘅。多得佢﹐我依家仲保留住唔少佢製作嘅視頻。佢用嘅MeGUI﹐ 我都係由佢處pickup番嚟。

[ 本帖最後由 wantoo 於 2019-7-3 12:41 PM 編輯 ]

myowntemp

回覆 18#  wantoo 的帖子


Very well said.

Totally agree that you still need to learn Avisynth (even using Avidemux) if you want to take advantage of all the features and more advanced editing.  And I strongly suggest to anyone who is serious about advanced editing to learn Avisynth scripts.

What I wanted to say in my earlier post was that Avidemux can already do quite a bit without learning/using Avisynth; and that Avidemux itself does support Avisynth - I apologize if I caused any confusion here.

For a great percentage of people (myself included), and to each his own,  who need to quickly crop, cut and join videos, and some minor editing such as audio delay, sharpening/softening, changing brightness/contrast and even chroma; Avidemux is a fair tool to use.  I also use it to resize (mostly from 1080p to 720p or other sizes) and to resample the fps etc.

Again, I am becoming much lazier now - age factor - lol; so I just take a lot of shortcuts now.

小草2011

回覆 2#  roland22 的帖子

有点失望 , 少了第40盘 , Note 里的文字又乱码 , 不知道版主是要说什么!