How can I record these RTMP streams?

[babaganoosh]

Thanks. I tried that but it's still the same - certainly not a big deal, just enough to say 'yeah, they're not in sync 100%'.

I looked at

http://ffmpeg.org/ffmpeg.html#Audio-Options

and was going to try the asyncts option, but that's not a switch, right? not sure how to use that.

[greenythebeast]

Originally Posted by babaganoosh

Thanks. I tried that but it's still the same - certainly not a big deal, just enough to say 'yeah, they're not in sync 100%'.

I looked at

http://ffmpeg.org/ffmpeg.html#Audio-Options

and was going to try the asyncts option, but that's not a switch, right? not sure how to use that.

Never used asyncts before, so I can't help you there. Maybe someone else around here knows how to use it?

Also, what's the resolution of the video you got?

[babaganoosh]

how would I see that (the resolution)? watching the mp4, I don't have an info page that I can see in quicktime.

[greenythebeast]

Originally Posted by babaganoosh

how would I see that (the resolution)? watching the mp4, I don't have an info page that I can see in quicktime.

Well, how big is the filesize?

[babaganoosh]

1.3 Gb

[greenythebeast]

Ah, alright. Well I found that there is a 720p copy of the video file on the server as well:

rtmpdump -r "rtmp://realaudio.service.emory.edu/EVENTS/COMMENCE/" -a "EVENTS/COMMENCE/" -f "WIN 11,2,202,235" -W "http://realaudio.service.emory.edu/clients/jwplayer5.4/player.swf" -p "http://www.emory.edu/commencement/webcast/index.html" -y "mp4:commence2012-2.mp4" -o mp4_commence2012-2.flv

So if you want a higher quality version you could download that. Maybe the sync issue would be fixed in that too.

[compn]

use ffmpeg -i yourfile
(do not specify an output file!)

will output helpful info:

Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 720x404 [SAR 404:405 DAR 16:9], 947 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc