Audio out of sync AFTER importing

Handbrake is a great program for an input to output solution.  Just read up fellas.  It has a few caveats but with some practice and some study, you can get fast at it.  You can even make your own presets, much like most variants of the same type of software.

To recap:

VFR is an old format for carry, not delivery.  Talked to some old hat cameramen.  Cameras often had the problem when the electronic stabilizer was left on, prompting the creation of lens\sensor mount replacements that had a hardware stabilizer and an overscan version of the sensor that would avoid the problem.  Cheaper broadcast systems still had to deal with it, which lead to a standardized FLAGGED FRAME metadata, and signal boxes that would read it (there were boxes before but you had to match camera and signal box).  Most desktop playback software can read and adjust with it, even from older cameras, but most network services require you to purchase more resources from their service to handle it if you don't handle it yourself.  WIth movie production companies, they had to INGEST DAILIES, which meant sending to a preview machine, which would have an indicator where frames were dropped, and would double a previous frame for previewing.  From there, rough cuts were determined, and they were sent to an Ingest process that would either blend a frame or use a double frame.  For short drops, a double is ok.  For longer blends are better in between, but you really want to mix both in some instances.  Interlacing made this easier, but had jagged edges with faster subject motion, and you had to have a high frame rate, along with some edge blur to hide the aliasing.

Signal Input boxes that handle flagged frame do one of two things:

A. they introduce a lag of 5-120 frames (considering up to 60fps) to allow time to double previous or after frames for the missing ones

B. They hold the image in the output buffer and use a PULL on the output stream to grab the buffer, effectively grabbing the same frame twice (this is the passive version with no lag).

I've emailed a few manufactures in the medium area of the market.  All quote one or the other.  Both are considered b-cast ready.  These are better to use and with wifi connectors for HDMI, they are probably becoming more feasible for live shoots, or even camcorders, as they will output constant frame rates to a computer for recording.

Gamers have a real problem.  Most don't want to accept that there's a big difference in render overlay and sensor capture.  With a sensor, any stabilization can cause a drop here or there, but it's short and easy to mask with a simple AVS command feeding into any program; you can get started at the drop of a few lines of text (not perfect but close; and you can do a quick pass with AME outputting most with a match input, then setting your own frame rate and adding frame blending at the bottom checkbox; An hour of video at 4k took me about 15min to fix a lot of camera shake with a gaming style notebook of recent gen).

Most gamers want to use lesser setups and built in render capture running in their gfx renderer, but they don't realize that it's at the mercy of the game rendering.  IF the frame rate or action drop below the set frame rate in the render cap program, it will not fix the drop in frames, and they will have to run it through handbrake or AME; it will take a lot longer to fix, and handbrake gets choppy with subtle movements at the end of the drop.  AME gets blurry.  External capture is always best.  I like Elgato, but they also tell you to max out your system for constant frame rate, and if you want to stream, you also have to max it out to get the flagged frame to work properly.  This means you may need a second computer (actually, you should have 2 computers either way, I can run playback and FRAPS on a second netbook atom 1.2ghz and get 1080p at 30fps solid with only 2gb ram and xp os;  I can buy those on ebay for $50!!!  Spend 200 and you should be able to push fraps to 60p with 4-8gb ram, i5 and usb or usb3).

Elgato has a 60fps usb3 connector, and I'd hook it to any hdmi source (even another computer), but it requires maxed out resources with an i5 16gb and 2-4gb gfx card for 60p at high resolution.