Serato Video General Discussion

Talk about Serato Video and Video-SL.

is there a way to change the keyframe intervals within mpegstreamclip?

Proto J 12:14 AM - 2 March, 2011
i'm converting a bunch of AVI files to MP4 and i'd like to know if there's a way to change the number of keyframes within mpegstreamclip?

thanx.
carter 2:59 AM - 2 March, 2011
Yes. File>Export to Other Format>Format "MPEG-4". Then click Options. Under Video there is an option to hard set your key frame spacing.
Proto J 4:03 AM - 2 March, 2011
well i'm on 1.9.3b4 and tons of stuff is greyed out/muted... including that "export to other format" option (all of those are muted)...
Proto J 4:09 AM - 2 March, 2011
apparently the same thing was happening to shawn today at serato support. he downloaded mpeg streamclip and was looking over the options with me and also said everything was greyed out.

i don't get it.
Proto J 4:12 AM - 2 March, 2011
oh, well i just tried loading tracks from file and it works. we were trying from List>Batch List today.
Proto J 4:18 AM - 2 March, 2011
ok, that was the problem, loading them from batch list won't show those options for whatever reason.

so what's a good key frame rate to let serato run smoothly if you're jumping around cue points, scratching, and stuff?

thanx.
DJMark 5:24 AM - 2 March, 2011
Quote:
so what's a good key frame rate to let serato run smoothly if you're jumping around cue points, scratching, and stuff?


I personally use 24 for my encodes. It seems to give a good balance of fast response when skipping around in a file and reasonably low CPU use.

Too many keyframes (a lower number for the keyframe distance setting) and CPU use can go up. Too few (or worse, none at all) and you can start getting lags/frozen video when skipping around. Especially in Finder-preview.
carter 5:25 AM - 2 March, 2011
I wrote up a step-by-step on MPEG Streamclip a while back->serato.com (click link)

24 is the average, and I think it's the default in MPEG.

Haha..Mark chimed in on that while I was typing.
Proto J 2:16 PM - 3 March, 2011
here is the average info for key frames on files i've been converting with mpeg streamclip, when i drop them in movieinfobatch:

Keyframes: 239 (min: 30, max: 31,avg: 30.1)

does that look good for DJing video?

thanx.
zaguama 2:40 PM - 3 March, 2011
with current cpus that shouldnt be an issue at all.
Rane, Support
Shaun W 6:42 PM - 7 March, 2011
Quote:
here is the average info for key frames on files i've been converting with mpeg streamclip, when i drop them in movieinfobatch:

Keyframes: 239 (min: 30, max: 31,avg: 30.1)

does that look good for DJing video?

thanx.

Looks great to me :)