@Эшли: вы правы: компьютер является источником. Я исправил вопрос. Привет я попробовал решение, которое, кажется, работает отлично до сих пор, хотя на групповой стороне дела, я по-прежнему возникают некоторые проблемы, я все еще можете увидеть некоторые вещи, как это: пользователей: корневой системы MacPorts мой_логин " и " пользователи: корень myuserold системы MacPorts` Вот и результат этой команды : `dscacheutil -м группа | команда grep "системы MacPorts"` **после** имея управлял судо dscl . -удалить "/группы/системы MacPorts"` Не кажется странным ? Согласен полностью старый док я имел в течение многих лет работал намного лучше и удобнее!!

Это частичный ответ, но от того, что я помню C920 не поток в H264 по умолчанию. Я думаю, что это по умолчанию в MJPEG (что могло бы объяснить размытость), 3-й вариант будучи ЮВ.

Если следовать этой теме, то увидите, что мне пришлось изменить потоковом режиме через v4l2ctl (в Linux) для получения H264 поток. Предполагая, у вас есть где-то программы в Linux:

#установка C920 CAM для кодирования кодек H264, частота кадров 30/1:
v4l2-CTL с-установить-дрм-видео=ширина=1920,высота=1080,pixelformat=1 

Будем надеяться, что конфигурация остается после отключения веб-камеры, что позволяет использовать его на OSX...

Если вы заинтересованы в менее "родное" решение, чем с QuickTime, остальные нити описывается, как использовать GStreamer, либо РТП потокового или местных захвата. Я не пробовал его на OSX, но вы можете попробовать заменить v4l2src по osxvideosrc:

ОКП запуска-1.0 -ВВВ osxvideosrc \
! видео/Х-кодек H264, ширина=1920, высота=1080, частота кадров=30/1 \
! очереди максимальный размер буфера=1 \
! matroskamux \
! filesink расположение=/tmp/и видео.мкВ

... которые должны дать вам файл Matroska.

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