Kdenlive/Manual/Capturing/ru: Difference between revisions
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=== Firewire === | === Firewire === | ||
Это захватывает видео с источников, подключенных через карту и кабель FireWire (также известный как - IEEE 1394 Высокоскоростной Последовательный Порт) . | Это захватывает видео с источников, подключенных через карту и кабель FireWire (также известный как - IEEE 1394 Высокоскоростной Последовательный Порт) . | ||
Capture options are | |||
*DV RAW | |||
*DV AVI Type 1 | |||
*DV AVI Type 2 | |||
*HDV | |||
The first three are quality wise the same (exactly the same DV 25Mb/s standard definition codec), just packed differently into the file. Type 2 seems to be the most widely supported by other applications. | |||
The raw format contains just the plain video frames (with audio interleaved) without any additional information . Raw is useful for some Linux software. Files in this format can also be played with Windows QuickTime when renamed to file.dv . | |||
AVI files may contain multiple streams. Typically, they include one video and one audio stream. The native DV stream format already includes the audio interleaved into its video stream. A type 1 DV AVI file only includes one DV video stream where the audio must be extracted from the DV video stream. A type 2 DV AVI file includes a separate audio stream in addition to the audio data already interleaved in the DV video stream. Therefore, the type 2 DV AVI file is redundant and consumes more space. | |||
HDV is a high-definition format used on tape-based HD camcorders. | |||
This functionality uses [http://linux.die.net/man/1/dvgrab dvgrab] | |||
=== FFmpeg === | === FFmpeg === | ||
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=== Screen Grab === | === Screen Grab === | ||
<span class="mw-translate-fuzzy"> | |||
Это захватывает видео с экрана ПК с помощью RecordMyDesktop. Существует неустраненный дефект этой функции - См. трекер ошибок ID [http://www.kdenlive.org/mantis/view.php?id=2643 2643] | Это захватывает видео с экрана ПК с помощью RecordMyDesktop. Существует неустраненный дефект этой функции - См. трекер ошибок ID [http://www.kdenlive.org/mantis/view.php?id=2643 2643] | ||
</span> | |||
In version 0.9.3 the Screen grab is done by the ffmpeg functionality instead. For screen capture to work in ver 0.9.3 the version of ffmpeg installed needs to have been compiled with the --enable-x11grab option. Ubuntu comes with an ffmpeg compiled with this option. | |||
To check on your linux distro type "ffmpeg -version" in a terminal and look for --enable-x11grab in the reported configuration info. <ref>There are two branches of ffmpeg now a Libav branch and a ffmpeg.org branch. The ffmpeg version from the later reports the configuration when you run with "ffmpeg -version". The Libav version does not. So this method to check for the --enable-x11grab does not work if you have libav version of ffmpeg.</ref> | |||
If you are capturing screen and using the X246 with audio settings and you get a crash as shown in the screen shot ... | |||
[[File:Kdenlive Screen cap with audio crash.png]] | |||
... then consider creating a profile for audio capture where ''-acodec pcm_s16le'' is replaced by ''-acodec libvorbis -b 320k''. See [[Special:myLanguage/Kdenlive/Manual/Settings_Menu/Configure_Kdenlive#Capture|Configure Kdnelive]] | |||
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Это для захвата с помощью карт видеозахвата [http://ru.okno-tv.ru/proshop/equip/index2.php?SECTION_ID=16376 Blackmagic] -- [http://www.blackmagic-design.com/uk/products/decklink/ Decklink] . Неизвестно, насколько стабилен этот код на данный момент. См. дефект [http://www.kdenlive.org/mantis/view.php?id=2130 2130]. | Это для захвата с помощью карт видеозахвата [http://ru.okno-tv.ru/proshop/equip/index2.php?SECTION_ID=16376 Blackmagic] -- [http://www.blackmagic-design.com/uk/products/decklink/ Decklink] . Неизвестно, насколько стабилен этот код на данный момент. См. дефект [http://www.kdenlive.org/mantis/view.php?id=2130 2130]. | ||
=== Footnotes === | |||
<references/> | |||
{{Prevnext2 | {{Prevnext2 | ||
Revision as of 17:48, 15 January 2013
Видеозахват
Kdenlive предоставляет функциональные возможности для захвата видео с внешних устройств - Firewire, FFmpeg, Screen Grab and Blackmagic.
Вы настраиваете видеозахват в (подробнее об этом здесь).
Место для сохранения захваченного видео, определяете в (подробнее об этом здесь).
Для выполнения видеозахвата выберите Монитор записи и устройство захвата из раскрывающегося в правом нижнем углу списка.
Firewire
Это захватывает видео с источников, подключенных через карту и кабель FireWire (также известный как - IEEE 1394 Высокоскоростной Последовательный Порт) .
Capture options are
- DV RAW
- DV AVI Type 1
- DV AVI Type 2
- HDV
The first three are quality wise the same (exactly the same DV 25Mb/s standard definition codec), just packed differently into the file. Type 2 seems to be the most widely supported by other applications.
The raw format contains just the plain video frames (with audio interleaved) without any additional information . Raw is useful for some Linux software. Files in this format can also be played with Windows QuickTime when renamed to file.dv .
AVI files may contain multiple streams. Typically, they include one video and one audio stream. The native DV stream format already includes the audio interleaved into its video stream. A type 1 DV AVI file only includes one DV video stream where the audio must be extracted from the DV video stream. A type 2 DV AVI file includes a separate audio stream in addition to the audio data already interleaved in the DV video stream. Therefore, the type 2 DV AVI file is redundant and consumes more space.
HDV is a high-definition format used on tape-based HD camcorders.
This functionality uses dvgrab
FFmpeg
Я считаю, что это захватывает видео с веб-камеры используя Video4Linux2.
Screen Grab
Это захватывает видео с экрана ПК с помощью RecordMyDesktop. Существует неустраненный дефект этой функции - См. трекер ошибок ID 2643
In version 0.9.3 the Screen grab is done by the ffmpeg functionality instead. For screen capture to work in ver 0.9.3 the version of ffmpeg installed needs to have been compiled with the --enable-x11grab option. Ubuntu comes with an ffmpeg compiled with this option.
To check on your linux distro type "ffmpeg -version" in a terminal and look for --enable-x11grab in the reported configuration info. [1]
If you are capturing screen and using the X246 with audio settings and you get a crash as shown in the screen shot ...
... then consider creating a profile for audio capture where -acodec pcm_s16le is replaced by -acodec libvorbis -b 320k. See Configure Kdnelive
Blackmagic
Это для захвата с помощью карт видеозахвата Blackmagic -- Decklink . Неизвестно, насколько стабилен этот код на данный момент. См. дефект 2130.
Footnotes
- ↑ There are two branches of ffmpeg now a Libav branch and a ffmpeg.org branch. The ffmpeg version from the later reports the configuration when you run with "ffmpeg -version". The Libav version does not. So this method to check for the --enable-x11grab does not work if you have libav version of ffmpeg.