The Technical Side of Filmmaking...

[MrBiddle]

As a director. It was the first film Michael Keaton came out in.

Only to reteam with him in Gung Ho and The Paper... I see. thanks.

[storaroing]

Yeah. A successful actor-director pairing. Like Scorcese and Harvey Keitel, DeNiro

[angryliar]

In a recent post production session we noticed hum in some of our footage. When we reviewed the situation that we were in during production we realized that this hum occurs when we have our camera plugged in the AC outlet.

We did some tests and indeed there is a level of hum from an improperly grounded AC line.

As a recommendation, it would help avoid the prob if you use a battery or DC power when shooting SYNC. This hum isn't relevant when at MOS shoots.

Hope this helps.

Best regards




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[MrBiddle]

In a recent post production session we noticed hum in some of our footage. When we reviewed the situation that we were in during production we realized that this hum occurs when we have our camera plugged in the AC outlet.

We did some tests and indeed there is a level of hum from an improperly grounded AC line.

As a recommendation, it would help avoid the prob if you use a battery or DC power when shooting SYNC. This hum isn't relevant when at MOS shoots.

Hope this helps.

Best regards

Thanks.
It does, I also know people who were recording a show... the producers requested they use Direct Current.

[onin111]

Other possiblities of Hums are due to low voltage of outlet(only happens when too many appliances are plugged in one line), AC outlets/wires are insufficiently shielded, and power lines/cords pass through the mic wires or the mics itself...
Just an opinion...

[MrBiddle]

One tip, is to record a "buzz track" that is to be looped to depict the ambient sounds of the set... 20 or 30 seconds of buzz track will suffice, there might be an uneven sounds when cutting from one sequence to another, so that this uneveness will be compensated, put in a buzz track, but try to turn it down if it's a little too loud.

[angryliar]

We've tried this approach in dealing with this hum (when it can't be avoided in production).

We plug in the mic input an unwired baby plug or XLR (or whatever applies) to mute the mic input then record the hum with duration longer than the longest production take.

During post production a phase reversal is then applied to minimize the hum.

Hope this helps.

Best regards...

[MrBiddle]

We plug in the mic input an unwired baby plug or XLR (or whatever applies) to mute the mic input then record the hum with duration longer than the longest production take.

Very cool.... I didn't know this "mute the mic input" magic existed...

Thanks. Keep 'em tips coming.

[angryliar]

Hi guys,

A common problem in post for indie productions is fixing the audio recorded (in production) when the camera is following the subject in a room. There's a big chance that the mic will capture all footsteps made by everyone (near the mic -cast & crew) in the location so as an SOP everyone should be required to take off their footware. It's best to keep their socks on so they can glide instead of walk thus illiminating the unnecessary sound.

Having this unwanted sound means Foley Work for audio post (if you wanna make your video sound right) and the risk of sounding unnatural.

Please note that bad audio recorded in production can not be fixed in post. Ask a Professional Sound Engineer...

Hope this helps.

Regards.

[exudos]

EDITING HERE!

its jst an itsy bitsy prob..

I am recently using premier pro... and dont know how to combine 2 avi file placed on the timeline.. i know how to slice/razor/cut them but dont knw how to merge them one by one... cause im tired of correcting color mono e mono...