Paul Collins
Forum Replies Created
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Jeff,
What I do is turn off audio in all camera sources in the Normal layer, and use the Audio layer to select audio from the camera of my choice (or any other source). Don’t know why your trick doesn’t work though.
While that’s a little more switching during the show, I use a macro tool (Keyboard Maestro for Mac) to map plain key shortcuts for switching layers and sources (by including a number in each source’s name). So I don’t have to use the mouse during a broadcast and switching is easy and quick.
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com -
Randall Bennett of TechVI runs Skype on separate computer(s) and picks it up on his Wirecast machine via Desktop Presenter: How TechVi Gets Produced
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com -
From a brief look at the MoTU pages, it looks like it only delivers one source at a time, which is not what you want for WireCast. Well, you might be able to do cuts between cameras (does it provide a clean cut?) but dissolves and other effects require each source be feeding WireCast at all times.
I’ve read about those Cat-5 FireWire extenders, it seems like they would work but I have no evidence of this. Feeding multiple FireWire cameras into a single FireWire bus on a MacBook/Pro is very unreliable and should be avoided (see WireCast docs about this).
If I wanted medium-distance camera runs, I’d consider simply using analog composite video cables and digitizing it with USB digitizers at the Mac end. That also might let you use a MacBook/Pro. (I haven’t done that either though.) This doesn’t give you HD, but live streaming of HD is pushing the bandwidth envelope pretty hard at best.
Craig’s suggestion of a computer at each camera running Desktop Presenter would be an all-digital option if you prefer that. That avoids the single FireWire bus issue too. That’s 4 computers though!
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com -
I try to keep hinting off, as my recordings are not directly published without some sort of conversion. The problem recordings I got with “chipmonk” fast sound speed were probably not hinted, and certainly the good recordings I’ve gotten lately with stereo AAC recording are not hinted.
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com -
This is with QuickTime 7.6.4 both on broadcasting Mac and receiving Mac. Seems like this might be a QuickTime rather than a WireStream issue – I’ve been seeing audio problems using QuickTime Broadcaster as well. I I’ll try to post a bug report when I can.
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com -
Craig, 30 FPS didn’t make any difference. I could make chipmunk sound mode (approx. 2x audio playback speed) come and go by switching between mono and stereo with other settings the same. So I guess there’s a bug with mono mode in either the AAC encoder (MPEG-4 audio setting) or decoder in QuickTime.
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com -
I did a brief test streaming 15 FPS video with MPEG-4 audio 48kbps/24kHz sampling, mono. Opened the stream in QuickTime Player 7.6.4 and the audio was chipmunked (sounded like 2x speed). On a hunch, I changed to stereo audio and then the audio was correct. Could be a coincidence, but interesting.
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com -
I’ll check later when I have time. You’d think if simply using certain encoding settings caused these problems, we already have heard about it. Maybe it only happens with slower frame rates (such as 10 and 15 FPS, which I use)–I think someone else mentioned this in connection with a slow rate.
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com -
With H.264 streams and recordings, whether Wirecast or QT Broadcaster, there seem to be audio settings that cause problems like this. Try different sample and bit rates! I’m still trying to find the rhyme or reason for this, but certain rates have caused severe audio sync and speed problems (and loss of audio for some but not all streaming viewers).
Web/cablecasting: https://ashlandtv20.com
Software Development: https://www.gracion.com