[FFmpeg-user] Resuming broken capture of mpeg-ts stream, or capture from certain position?
pouvoirsdumale-ffmpeg at yahoo.com
Wed Aug 8 02:26:21 CEST 2012
> How are you capturing? (full command line and console output). What is
I find the link to the stream on NBCOlympics website using Firefox, then I
type in the command prompt:
ffmpeg.exe -i URL -c copy out.ts
What is slow is the capture. Because the streaming link becomes invalid
(and thus capture stops) before I can capture the entire stream (a few hours
after beginning the stream).
> It does nothing?
I've tested by positioning it to just a few seconds after the beginning
(like 10 seconds). It does work, but like I said, I think ffmpeg streams
the part I don't want it to download before getting to the part I do want.
So if I specify a position one hour away, after I type
ffmpeg.exe -ss 3600 -i URL -c copy out.ts
the command prompt just hangs for a long time and I haven't had the patience
to see if it ends up getting to the part I want or not.
The thing is, if the stream link times out where the download left off, and
if using -ss POSITION streams the beginning, then the link'll time out about
the time it gets to where I want it to start recording... Right? I don't
understand why it can't just jump to the position I specify...
> Without knowing what's going on, I'd guess that they're timing out the
> videos, so you'd need to re-parse and get new links [?]
Yeah, to get new links, I just have to refresh the videos. The problem is
that if I redo a capture, it'll start at the beginning again. I have found
no way to have ffmpeg jump directly to the position I want.
I'm not too well informed about stuff like this. I only followed this guide
about how to capture:
Or the entire topic:
Maybe it's not possible? I really don't know much more about these kinds of
things. Thanks again for your reply.
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