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Comment by deepsun | Hacker News Reader

Improve software? It's job is to serve video editors, not the other way around. And it's a fun task, I bet there might be a dev or two who's working on that right now. And if someone is ready to pay for them, even better.

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There is absolutely no reason for any sane video editing software to be able to read VFR files.

It should, however, reject them gracefully but positively.

I read that last bit in Hank Hill's voice.

We sell codecs and codec accessories.

Of course there is. A lot of older TV shows are effectively variable frame rates when properly detelecined/deinterlaced. And mixing two fixed frame rate sources with different framerates would naturally produce a VFR video and with current editing software you need to destroy some of the source information or interpolate some slop to make it work. There is no good reason for editing software to have these limitations either when most players and all modern video containers have caught up and are VFR-first with a fixed frame rate hint in the headers if you're lucky.

> A lot of older TV shows are effectively variable frame rates when properly detelecined/deinterlaced.

How do you figure that?

Broadcast TV is very very very very firmly locked to 25 interlaced frames per second (or 29.97ish in the US where they have to do everything with funny numbers), interlaced to 50 (59.94 US) fields per second.

How could that in any way be VFR?

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