-
Suggestions for high-speed draft exports
Hi,
I’m often asked to send people a draft of edits, and I need them to be
1. Reasonably small
2. Fairly representative of the final piece (so leaving any video effects on)
3. Quick-exporting so I’m not waiting ages between iterationsI’m on CS6, using Media Encoder.
I’m probably going to be using h.264 whatever I do.
The obvious things are to turn off “maximum render quality” and “frame blending”.
And 1 pass is quicker than 2 pass, I assume.
But does a high data rate mean the computer has to do less compression and exports quicker? Or is it SLOWER because it’s trying to get maximum quality?
Would putting in a lower frame rate export quicker because there are less delta-frames(?) to produce? Jerky playback would be OK for a draft. Maybe 5fps for a 25fps video?Any suggestions/experience would be appreciated!
– Paddy
-
3 Replies
-
A higher data rate will take longer to compress and longer to upload finished file.
With the frame rate, I wouldn’t drop below half the frame rate.Chris
-
As promised, here are my test results for high-speed drafting (particularly if you need to send a new draft every time you make an update; even savings of a few minutes can mean you get a lot more work done in the day).
It appears (in Adobe Media Coder at least) that FRAME RATE is the best way of speeding up an export.
I turned off frame blending and maximum quality to start with.
A 25fps export of my 6 minute 2-camera edit with some overlaid stills took 6:17
A 12.5fps export of the same thing took 3:56
And a 10fps (a bit jerky, but still useful as a draft) took 3:25.Interestingly, data rate didn’t make a lot of difference. The exports above were 640×360 at 0.3mb/s. Exports at 3mb/s were about 3% slower.
When I did the 0.3mb/s 10fps one at 320×180 pixels, it took 3:11 to export.
Bear in mind that the “reading XMP” stage took around 1:15 of the export time in all cases.
Yes, this isn’t super-scientific, I’m certain that low-framerate drafts of long videos will be a lot quicker than native framerate ones. I’m not so sure about video with lots of effects etc; possibly a smaller framesize will benefit there?
I hope that’s helpful to someone out there!
Paddy, CreativeMedia.org.uk
-
Hey Paddy,
This piece of advice really helped me!!
Much appreciated, thanks.
Reply to this Discussion! Login or Sign Up