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Форум: Видео и звук
Тема: Записть в DVD Studio видео 16:9
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Zeight [19.11.2012 10:55] Записть в DVD Studio видео 16:9:
Здравствуйте, возникает проблеме с записью видео на программе DVD Studio, записанный диск просто нигде не читается.
настройки такие:
в енкодинг
aspect radio: 16:9
field order: auto
mode: one pass VBR
bir rate: 24.7 mbps
max bit rate: 29.0 mbs
motion estimation: Best
method: encode on build
в generals справа:
dvd standard: HD DVD
video standard: PAL
stearms и remote control: not set везде
DVD ROM:
на content галка не стоит
само видео в MOV с кодеком Apple Intermediate
в менюшке тоже видео есть, с тем же кодеком
Собственно в чем может быть проблема?
blblTb [19.11.2012 11:18] :
На выходе должно быть:
720x576 PAL 25 fps, ставьте нормальные ~6 мегабит/сек
Звук: 48 kHz 16 bit stereo
плохой выбор
Zeight [21.11.2012 18:04] :
Но у меня видео 16:9, зачем же мне 720x576?
А что не так с HD DVD?
blblTb [22.11.2012 08:48] :
Zeight писал(а):
Но у меня видео 16:9, зачем же мне 720x576?
Вы полагаете, что я ошибся? Отнюдь.
16:9 is the only widescreen aspect ratio natively supported by the DVD format. Anamorphic DVD transfers store the information as 5:4 (PAL) or 6:4 (NTSC), which is set to expand to either 16:9 or 4:3, which the television or video player handles. For instance, a PAL DVD with a full frame image may contain a video resolution of 720×576, but a video player will stretch this to 1024×576 with a 16:9 flag in order to maintain the correct aspect ratio.
DVD producers can also choose to show even wider ratios such as 1.85:1 and 2.39:1 within the 16:9 DVD frame by hard matting or adding black bars within the image itself. Some films which were made in a 1.85:1 aspect ratio, such as the U.S.-Italian co-production Man of La Mancha and Kenneth Branagh's Much Ado About Nothing, fit quite comfortably onto a 1.77:1 HDTV screen and have been issued anamorphically enhanced on DVD without the black bars. Many digital video cameras have the capability to record in 16:9.
Zeight писал(а):
А что не так с HD DVD?
А оно у вас работает? Тогда зачем жалуетесь?
ссылка ссылка ссылка
blblTb [22.11.2012 14:29] :
[url=https://dl.dropbox.com/u/29197369/ForumPosts/Aspect_in_PAL.mp4]https://dl.dropbox.com/u/29197369/ForumPosts/Aspect_in_PAL%20%280.00.14.17%29.jpg
Буду благодарен коллегам за конструктивную критику и предложения, поскольку сам я затрудняюсь в лапидарной (краткой) форме живописать хитрый смысл 788х576 при монтаже/обработке в PAL
blblTb [22.11.2012 17:56] :
Прекрасное объяснение:
This article primarily addresses the aspect ratio of images as displayed, which is more formally referred to as the Display Aspect Ratio (DAR). In digital images, there is a distinction with the Storage Aspect Ratio (SAR), which is the ratio of pixel dimensions. If an image is displayed with square pixels, then these ratios agree; if not, then non-square, "rectangular" pixels are used, and these ratios disagree. The aspect ratio of the pixels themselves is known as the Pixel Aspect Ratio (PAR) – for square pixels this is 1:1 – and these are related by the identity:
SAR × PAR = DAR.
Rearranging (solving for PAR) yields:
PAR = DAR/SAR.
For example, a 640 × 480 VGA image has a SAR of 640/480 = 4:3, and if displayed on a 4:3 display (DAR = 4:3) has square pixels, hence a PAR of 1:1. By contrast, a 720 × 576 D-1 PAL image has a SAR of 720/576 = 5:4, but is displayed on a 4:3 display (DAR = 4:3), so by this formula it would have a PAR of (4:3)/(5:4) = 16:15.
However, because standard definition digital video was originally based on digitally sampling analog television, the 720 horizontal pixels actually capture a slightly wider image to avoid loss of the original analog picture. In actual images, these extra pixels are often partly or entirely black, as only the center 704 horizontal pixels carry actual 4:3 or 16:9 image. Hence, the actual pixel aspect ratio for PAL video is a little different from that given by the formula, specifically 12:11 for PAL and 10:11 for NTSC. For consistency, the same effective pixel aspect ratios are used even for standard definition digital video originated in digital form rather than converted from analog. For more details refer to the main article.
In analog images such as film there is no notion of pixel, nor notion of SAR or PAR, and "aspect ratio" refers unambiguously to DAR. Actual displays do not generally have non-square pixels, though digital sensors might; they are rather a mathematical abstraction used in resampling images to convert between resolutions.
Non-square pixels arise often in early digital TV standards, related to digitalization of analog TV signals – whose horizontal and vertical resolutions differ and are thus best described by non-square pixels – and also in some digital videocameras and computer display modes, such as Color Graphics Adapter (CGA). Today they arise particularly in transcoding between resolutions with different SARs.
DAR is also known as Image Aspect Ratio and Picture Aspect Ratio, though the latter can be confused with Pixel Aspect Ratio
blblTb [23.11.2012 01:18] :
Обновил видео под ссылкой в виде картинки
Daniel [23.11.2012 01:47] :
blblTb писал(а):
Буду благодарен коллегам за конструктивную критику и предложения
Единичку подвинуть к шестерке? :)
паша кошляк [23.11.2012 02:32] :
Daniel писал(а):
[quote:3ea7153ff7="blblTb"]Буду благодарен коллегам за конструктивную критику и предложения
Единичку подвинуть к шестерке? :)))
blblTb [23.11.2012 10:48] :
Подвигал. Видео обновил немного.
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