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AVS HD Demo Disk

相信好多影音發燒友都好似Anthony咁，鍾意用一啲電影片段嚟試效果或校聲，不過一般一套戲入面嘅試機位不多，好多時試三幾分鐘又要轉碟。所以每年由DTS同Dolby推出嘅Demo碟可謂一眾發燒友都希望得到嘅天碟，可惜呢類碟一般只係畀業界人士，要免費得到都唔容易。

其實DVD年代都已經有啲發燒友自制試機碟用嚟招呼朋友，不過到Blu-ray年代要自行制作試機碟嘅工序複雜得多，起碼Anthony唔識先，其實本地都有做，不過唔易拎 到。

其實早於兩年前外國十分有名嘅影音討論區AVS Forums已經有發燒友討論制作隻試機碟，有興趣可以去睇下有關討論串: http://www.avsforum.com/avs-vb/showthread.php?t=1166423，ver 2.0 討論 http://www.avsforum.com/avs-vb/showthread.php?t=1283375

呢隻AVS Demo Disk容量為42.7gb，一開始播放就即刻入到Main Menu

可選擇影片種類有試低頻嘅LFE

有試環繞聲嘅Surround

有試靚畫面嘅Visuals

最後有兩段演唱會片段嘅Music

Anthony抽咗幾段片段嚟試，唔知係唔係心理作用，硬係覺得聲音密度比平時家中嘅碟高啲，低頻實淨啲，有啲畫面又好似靚啲。

最深刻係第一段嘅演唱會片段，聲音密度好高。

最後要多謝網友Lemonstar兄報料。

PS: 以上為Anthony個人非專業感覺，如資料上有任何錯漏歡迎指正。

色彩空間的選擇困難症

好多時當用家喺設定Blu-ray Player嘅色彩空間時都會有疑問，到底係揀RGB (0-255)(16-235)好定YCbCr(4:4:4)(4:2:2)好，有時揀落又好似無大分別。

今次同大家作過簡單解釋，其他較深入啲嘅學術問題則請各位自行上網研究。

因以往廣播嘅頻寬問題，為求輸出穩定嘅訊號，會將RGB訊號以色差(YCbCr)儲存同傳送。一般荷李活電影會以4:2:2儲存，而現時嘅Blu-ray Disc則會以4:2:0儲存。

之後Blu-ray Player讀取Blu-ray Disc時要先將4:2:0轉成4:2:2或4:4:4，因為4:2:0只係儲存標準，而傳送標準為最少4:2:2，所以一般設定係唔會見到4:2:0輸出。

在訊號送達人眼之前會將呢個YCbCr訊號要轉成RGB訊號，咁幾時做呢? 無一定答案，要視符Blu-ray Player做轉換好定係Display做轉換好。

可以睇睇以下嘅例子可能可以帶到一啲啓示

揀YcbCr 4:2:2
1 Blu-ray Disc 以4:2:0 儲存
2 由Blu-ray Player轉成4:2:2輸出
3 Display 收到4:2:2轉成4:4:4
4 Display將4:4:4轉成RGB輸出畫面

揀YcbCr 4:4:4
A
1 Blu-ray Disc 以4:2:0 儲存
2 由Blu-ray Player轉成4:4:4輸出
3 Display將4:4:4轉成RGB輸出畫面
或
B
1 Blu-ray Disc 以4:2:0 儲存
2 由Blu-ray Player轉成4:4:4輸出
3 Display 收到非4:2:2訊號將4:4:4轉成4:2:2
4.Display再由4:2:2換成4:4:4
5 Display將4:4:4轉成RGB輸出畫面

揀RGB (16-235)
A
1 Blu-ray Disc 以4:2:0 儲存
2 由Blu-ray Player轉成4:4:4
3.Blu-ray Player將4:4:4換成RGB輸出
4 Display收到RGB後乜都唔做輸出RGB畫面
或
B
1 Blu-ray Disc 以4:2:0 儲存
2 由Blu-ray Player轉成4:4:4
3.Blu-ray Player將4:4:4換成RGB輸出
4 Display收到非4:2:2/4:4:4輸號將RGB轉做4:2:2/4:4:4訊號
5. Display再將4:2:2/4:4:4訊號成RGB輸出畫面

到底用Blu-ray Player做conversion定係用display就要睇下邊部機做conversion好啲
問題係就算知道Blu-ray Player嘅conversion好啲，用Blu-ray Player做YCbCr轉換RGB係好啲
但用家唔知道display收到RGB訊號時會唔會再用RGB做多次conversion。

用家可以用一啲測試圖去試下唔同嘅設定，但一般用YCbCr會穩陣過RGB
而4:2:2又會穩陣過4:4:4

AUTO係最最穩陣..

好開心，今日終於收到ISF証書了

好開心，今日終於收到ISF証書了，現時擁有ISF II的資格，可惜喺ISF網頁中未揾到Anthony嘅名。

下一步係向THX進發。

Popcorn Hour 新機 A300

img] Popcorn Hour剛公佈A系後繼機A300 外形大小與A200相似將會用上新介面

另外於Network Tank Forums正就200系是否應跟隨300系上新介面進行投標有興趣嘅朋友可以到以下網址參考
 http://www.networkedmediatank.com/showthread.php?tid=55398

OPPO BDP-93/BDP-95 Latest Official Release BDP9x-57-0917

OPPO BDP-93/BDP-95 Blu-ray Disc Player Firmware Update

Release Information: Release date: September 26, 2011 Category: Latest Official Release Main Version: BDP9x-57-0917 Loader Version: CN0900 Sub Version: MCU93-09-0218 (BDP-93), MCU95-08-0218 (BDP-95) Release Notes: This version is designed for the OPPO BDP-93 and BDP-95 Blu-ray Disc players. Comparing to the previous official release version BDP9x-52-0707, the major changes included in this version are: Added Pandora Internet Radio streaming. The audio quality is 128 Kbps compressed stream decoded to 44.1KHz/16bit, 2-channel for both free and premium accounts. You can access Pandora by pressing the HOME button, and then select "Internet" from the Home Menu, or by pressing SOURCE and selecting Pandora. This service is limited to U.S. residents only. Added YouTube Leanback streaming. YouTube LeanBack is designed to provide an uninterrupted stream of HD videos from YouTube like you were watching a normal television channel. Access YouTube Leanback from the Home Menu -> Internet, or by pressing SOURCE and selecting YouTube. Resolved errors related to the player freezing when loading specific Netflix streams. In the previous firmware, when playing movies with optional language and subtitle selection, the player may freeze at the initial buffering screen. Examples of titles affected include "Shutter Island", "LOST. Season 1. Pilot" and "The One". Improved the subtitle support in M2TS/TS playback through USB drive, external hard drive or DLNA streaming. Customers have reported that the movie picture could occasionally freeze up during the playback, while the time counter was still moving forward. This issue was related to subtitles and has been resolved in this release. Resolved the subtitle flickering or image stuttering issue during some 3D movie playback. This issue has been reported to happen randomly on some 3D movies released in Asia or Europe. Sample titles include "Step Up", "SAW" and "Resident Evil: Afterlife". Resolved the image vertical stretch issue observed on some legacy DVD's. Customers have reported that when playing these DVD's using HDMI 1 and setting Aspect Ratio to "16:9 Wide/Auto", the pictures were vertically stretched. This issue could happen to certain 4:3 DVD's issued before or around 2000, and sample titles include "The Abyss", "Titanic", "TWELVE O'CLOCK HIGH (2002)" and "1941 (1979)". Improved support for user-created DVD-Audio discs. In the previous firmware, the on-screen display and the front panel time counters may stop at 00:00:00 when playback advanced from Track 1 to Track 2. This was mostly observed on user-created DVD-Audio discs which were “Audio Only” and contained no menus, backgrounds, or additional features. Resolved the Test Tone missing or harsh noise issues. Some customers have reported these using some special combinations of downmix mode and speaker setting. Improved the audio information display, e.g., previously "MLP 5.1" was shown as "5.1", "1/2 DTS 6.1" was shown as "1/2 DTS 5.1". Added brief chapter information (Current Chapter/Total Chapters) on-screen display when pressing PREV or NEXT button to skip chapters. This feature only applies to commercial discs which include Blu-ray, DVD and DVD-Audio. Improved general disc compatibility based on recent and upcoming Blu-ray releases as well as user-submitted disc samples. Sample movies include "Avatar(3D)", "Journey to Mecca", "Alice (2009 Miniseries)" and "Pirate of Caribbean 4" (3D version released in Asia and Europe). All features and improvements of the previous firmware are also included in this version. Firmware Upgrade Instructions: Warning: Although firmware upgrade is an easy and usually trouble-free process, it is important to ensure that the power supply to the player is stable, and the upgrade process is not interrupted. A failed firmware upgrade can render the player unusable. There are three ways to upgrade the firmware. If your player has an Internet connection, the easiest way to upgrade the firmware is the "Via Network" method. If you have a USB thumb drive, you may choose the "Via USB" method. You can also use the "Via Disc" method by preparing a firmware upgrade CD yourself or requesting a firmware CD from OPPO customer service. Please follow one of the three procedures below based on the upgrade method chosen. Firmware Upgrade via the Internet Turn on your TV display and the OPPO player. Eject the disc tray from the OPPO player and remove any disc. Make sure that the player and the player is not playing any content. Press the SETUP button on the remote control to enter the setup menu. Select Device Setup, Firmware Upgrade, and then Via Network. The player will start searching for the new firmware from an OPPO firmware server. Please follow the on-screen instructions to complete the firmware upgrade process. Use the remote control to respond to on-screen prompts. Do not use the front panel buttons because the front panel buttons will stop working during the upgrade process. DO NOT ATTEMPT TO TURN OFF THE PLAYER, UNPLUG THE POWER, OR PRESS ANY BUTTONS OTHER THAN NECESSARY TO RESPOND TO THE ON-SCREEN PROMPT DURING THE REMAINING UPGRADE PROCESS. In order to complete the firmware upgrade process, the player will turn off automatically. Turn on the player again after the firmware upgrade process is completed. Repeat from Step 2 above until the player reports that it already has the latest version. This will ensure that the player downloads and installs all parts of the firmware update. Check the new firmware version by going to the setup menu, and then selecting Device Setup - Firmware Information. Congratulations! You have just completed the firmware upgrade. Firmware Upgrade via a USB Thumb Drive Click here to download the firmware file BDP9x-57-0917.zip Insert a USB thumb drive to the computer that stores the downloaded zip file. (The USB drive must be in FAT or FAT32 format, not NTFS. If you are not sure, just use a new USB drive that is 2GB or smaller since small drives are usually factory-formatted in FAT/FAT32.) Unzip the firmware file to the USB drive. Verify that the USB drive now contains a UPG folder and that the UPG folder is in the root/main directory of the USB drive. Please ensure that the UPG folder is not contained within any other folder. There are 2 files in the UPG folder: BDP9X.BIN, BDP9X.SIGN.

幾唔捨得都要放手(W5000)，同時入手(HC4000)

從新屋入伙至今三年多，家中所有器材已面目全非，唯獨對部Benq W5000投影機不離不棄，原因Anthony一身影像調校知識都由佢而起。

巿面上比W5000好嘅機好多，但Anthony對佢調校項目同線性嘅表現真係好難揾得到，而亦因為佢Anthony最後都踏上ISF影像調校課程，所以呢部W5000可以話對Anthony有十分大嘅意義。

可惜歲月不留人，而對影音產品更甚，話之你有幾旗艦，過得兩三年就新晶片一上就會被比下去。Anthony部Benq W5000亦一樣，早兩三年去家訪真係無幾多部機可以令Anthony有換機念頭，但來到呢年嘅家訪真係開始有換機嘅念頭。

去過咁多家訪Anthony校投影機最愛嘅都係JVC同三菱，而以現時新機推出速度之快，Anthony亦唔打算投資太多喺投影機上，所以三菱嘅HC4000嘅價錢絶對係Anthony嘅主要欣賞原因之一，調校過四部HC4000都有好好嘅效果，所以最後都係決定入手...HC4000。

雖然部HC4000已經出咗一年有多，已經算係舊款，不過今年三菱應該唔會再推出2D DLP入門機，而會推出HC7800 3D DLP機，而定價要去到兩千到尾euro。Anthony對3D無乜興趣，加上HC7800嘅定價甚高，所以就算係水尾都入呢部HC4000。

HC4000真係又細部又輕，同部Benq W5000真係好大分別， 雖然又輕又細但裝機都真係有啲難度，上下左右都無得用Len Shift，加上鏡頭偏右，同之前嘅W5000置中好唔同，所以都花咗唔少時間去研究點攪，而最後都要清清架面嘅器材同將隻幕放落啲先得，都攪咗成兩個鐘先開到機。





今晚試過用ColorHCFR校下畫面，同之前所校過嘅HC4000一樣，對比度會對色温有負面影響，要將對比度調低到-7可以攞到平衡，好在部HC4000本身好光，調低少少對比度對畫面流明度唔會有太大影響。雖然6色上唔可以完全校至HD709-REC色域標準，但實際睇戲畫面比可以喺數字上校準嘅W5000更靚。

總括嚟講Anthony對呢部HC40004嘅表現十分滿意，希望個膽run-in後有更好嘅表現。

-全文完-

以上為Anthony非專業個人感受，如資料上有任何錯漏歡迎指正