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virt2real.ru • Просмотр темы - Кодер-декодер с маленькой задержкой
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Кодер-декодер с маленькой задержкой

СообщениеДобавлено: 29 окт 2014, 19:58
ScorPio
Необходимо разработать тракт кодирования-декодирования (H.264) на TI с задержкой не более 100 мс. Меньше 40 мс - вообще идеально.
То есть надо каким-то образом вводить изображение (цифровая камера или аналоговый вход), кодировать, передавать на другую виртурилку (можно по проводам), декодировать и выдавать на ТВ (видимо аналоговый, ибо в цифре будет неясная задержка на ТВ). Разрешение PAL или HD - не принципиально.

Re: Кодер-декодер с маленькой задержкой

СообщениеДобавлено: 31 окт 2014, 13:56
COBECTb
У вас есть методика замера задержки?
Какие требования по расстоянию между в2р?

Re: Кодер-декодер с маленькой задержкой

СообщениеДобавлено: 02 ноя 2014, 15:23
realizator

Re: Кодер-декодер с маленькой задержкой

СообщениеДобавлено: 02 ноя 2014, 15:25
realizator

Re: Кодер-декодер с маленькой задержкой

СообщениеДобавлено: 05 ноя 2014, 12:30
ScorPio
А отпрофайленный гстример на ПК или на другой вирутрилке? Интересен именно полный цикл на виртурилках (точнее на процах TI). В итоге будет передаваться по радиоканалу без подтверждений (не вайфай), постоянная пропускная способность 6 Мбит/с чистыми. Проверять по UDP на коротком кабеле.
Проверяем задержку обычно запуском на телефоне таймера с тысячными долями, направлением на него камеры и расположением его рядом с ТВ, куда выводится уже декодированное изображение. Всё это фотографируется и несложной арифметикой получается результат. Камера и ТВ аналоговые, задержка в них 0.

Re: Кодер-декодер с маленькой задержкой

СообщениеДобавлено: 05 ноя 2014, 18:26
realizator

Re: Кодер-декодер с маленькой задержкой

СообщениеДобавлено: 06 ноя 2014, 00:14
ScorPio