[Libav-user] Decoding a network video stream
Carl Eugen Hoyos
ceffmpeg at gmail.com
Wed Aug 14 10:25:30 EEST 2019
Am Di., 13. Aug. 2019 um 20:58 Uhr schrieb Sergiu Giurgiu
<sergiu.giurgiu at motiongestures.com>:
> I am using libav in a C++ application that acts as a web server. It (the
> app) provides a websocket endpoint to which a webm video is being
> streamed by the client, which is a normal browser that accesses the
> client's webcam. If I save the received data into a file, it can be
> successfully played by a media player.
> What I want to do with the data, however, is to extract/decode the video
> into frames, in a std::vector<cv::Mat> which then will be sent for
> further processing by some other library. What I was expecting to happen
> was for the frames that make up the video to be extracted on the fly, as
> I receive the data.
This is not possible for all input file formats as in some cases the
(beginning) of the file is only updated once the encoding has finished.
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