Gentoo Archives: gentoo-user

From: meino.cramer@×××.de
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: [OT} GStreamer: How to view AND record a stream coming from an USB Webcam
Date: Mon, 16 Jun 2014 18:21:40
Message-Id: 20140616182130.GA3872@solfire
In Reply to: [gentoo-user] Re: [OT} GStreamer: How to view AND record a stream coming from an USB Webcam by James
1 James <wireless@×××××××××××.com> [14-06-16 05:36]:
2 > <meino.cramer <at> gmx.de> writes:
3 >
4 >
5 > > After unsuccessfully trying vlc with a Logitech C920 HD Pro Webcam
6 > > (over 2 seconds delay between audio and video).
7 >
8 >
9 > Have you tried : media-video/ffmpeg ?
10 >
11 > This wiki is full of good information. Many video packages use
12 > ffmpeg as part of their core solution... Pay attention to the myriad
13 > of flags you can set and the order of your syntax (manual) strings.
14 >
15 >
16 > http://trac.ffmpeg.org/wiki
17 >
18 > Here are some ideas:
19 >
20 > https://wiki.archlinux.org/index.php/FFmpeg
21 >
22 > You *may* be able to use the copy command of ffmpeg to spit and view
23 > the h.264 (x.264) stream in real time. Google for some more syntax
24 > snippets.
25 >
26 > Also there is zoneminder a video surveillance application. I do not
27 > know if they ever added x.264 support....
28 >
29 >
30 > HTH,
31 > James
32 >
33
34 Hi James,
35
36 thanks for your resply 8)
37
38 Zoneminder needs to intercept the video stream to analyse it --
39 that means, that it need to decode the stream, analyse it and
40 to encode it again.
41 Furthermore it needs a webserver...
42 A little to much load for my CPU and a little too much effort...
43
44 FFmpeg crashes and breaks (similiar reports on the web...) when
45 trying to watch video streams from the c920...
46
47 Currently the best results I get with gstreamer...but then I
48 cannot control the uvc parameters....
49
50
51 Sigh...things are crossing the border between "interesting" to
52 "complex"...
53
54 Best regards,
55 mcc

Replies

Subject Author
[gentoo-user] Re: [OT} GStreamer: How to view AND record a stream coming from an USB Webcam James <wireless@×××××××××××.com>