Record HLS streams?

[branch]

Yeah screen capture is an unnecessary generation loss, plus you can't use the machine for something else meanwhile.
ffmpeg crashes or skips a lot, but perhaps these bugs will be ironed out over time.

I get you - I try to steer clear of lossy options as well, but sometimes the trade-off for time and simplicity wins my compromise.

Have you tried anything that might work with Wireshark?

Wireshark?? But thats a network package analyzer isn't it? I know where the stream comes from, the feed is public, and they don't mind you recording it - if you can figure out how.

[tluxon]

Yeah screen capture is an unnecessary generation loss, plus you can't use the machine for something else meanwhile.
ffmpeg crashes or skips a lot, but perhaps these bugs will be ironed out over time.

I get you - I try to steer clear of lossy options as well, but sometimes the trade-off for time and simplicity wins my compromise.

Have you tried anything that might work with Wireshark?

Wireshark?? But thats a network package analyzer isn't it? I know where the stream comes from, the feed is public, and they don't mind you recording it - if you can figure out how.

That's true, but it can do much more than just analyze. The people who really know what they're doing can do an awful lot with it, so I didn't know if perhaps someone has come up with a way to use it for building/extracting a video file out of all the tiny fragments that we see on the higher level end.

For now it seems that the best option for highest quality is ffmpeg. In exchanges with support at apowersoft, they've told me that they're working on this very type of thing and will have full functionality in the next version of Streaming Video Recorder.

[tluxon]

And command line...
For a 30 second clip.

ffmpeg -i http://hls.twit.tv:1935/flosoft/smil:twitStream.smil/playlist.m3u8 -t 30 -c copy output1.mkv

vlc http://hls.twit.tv:1935/flosoft/smil:twitStream.smil/playlist.m3u8 --stop-time=30 --sout="#std{access=file,mux=mkv,dst='output2.mkv'}" vlc://quit

I see that you can stop a ffmpeg job at a certain time in from the start with the -t switch, but is there a way to break up a 4-hour video into eight 30-minute segments or four 1-hour segments? Or how about just grabbing a 10-minute segment halfway into the video? Is there any way? Or does ffmpeg always have to start at the beginning of the file?

[bat999]

I see that you can stop a ffmpeg job at a certain time in from the start with the -t switch, but is there a way to break up a 4-hour video into eight 30-minute segments or four 1-hour segments? Or how about just grabbing a 10-minute segment halfway into the video? Is there any way? Or does ffmpeg always have to start at the beginning of the file?

Hi
FFmpeg has a "-ss" switch for start position
Use it with "-t" switch for duration.
Though I don't know whether they work properly when downloading streams from www.


Documentation says:-

‘-ss position (input/output)’
When used as an input option (before -i), seeks in this input file to position.
When used as an output option (before an output filename), decodes but discards input until the timestamps reach position. This is slower, but more accurate.

position may be either in seconds or in hh:mms[.xxx] form.

(h h : m m : s s [.xxx] form)

[tluxon]

The -ss and -t switches worked great - Thanks!

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The -ss and -t switches worked great - Thanks!

When getting a live stream? Does it start grabbing at -ss specified time, or what did you do?

[tluxon]

The -ss and -t switches worked great - Thanks!

When getting a live stream? Does it start grabbing at -ss specified time, or what did you do?

I haven't tried it on a live stream yet. I'm just getting some NBCOlympics Full Event (raw, no commentary, no commercials) videos which are typically over 3 hours long and are fed to the viewer in 5-second-long chunks.

You could experiment with the -ss switch on a live stream, but I would guess the -t switch is most useful in that case. I'd like to learn what you find out.

[branch]

I haven't tried it on a live stream yet. I'm just getting some NBCOlympics Full Event (raw, no commentary, no commercials) videos which are typically over 3 hours long and are fed to the viewer in 5-second-long chunks.

You could experiment with the -ss switch on a live stream, but I would guess the -t switch is most useful in that case. I'd like to learn what you find out.

Ah, I thought you had.

well I generally don't use -t - i prefer to stop manually, but usually the ffmpeg has stopped on its own account, I don't know if its an error or it thinks there is a file limit (its an NTFS drive, so files can be huge, and there is space enough)

Not sure if -ss would work. Generally i just add a rough pause to a batch file at the start before running the ffmpeg command.