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You have to repeat the loop as many times as you need, then render it out. I'm not aware of any media player that can loop seamlessly.
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It's for infinite playback for an exhibition! Shoulda mentioned that I guess.
So I could do that but at some point there will be a join.
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You're gonna have to fade in and out if you want "seamless" infinite playback.
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Fade the audio? It's practically seamless now if it wasn't for the tiny juddering.
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The "juddering" is because the beats are not lined up. You've got to time it precisely on the downbeat of the bars. Regular audio editors do not interpret the beats, only the time.
Just tap your foot to the beat and make your trims that way. -
No it's how QuickTime/VLC handles it.
When you say the beats, you mean the audio?
I'll do a screengrab of what I mean... -
Depends on the editor/DAW. ProTools has worked with beats (in addition to all the other stuff) since ~c.1997.Originally Posted by budwzr
Scott -
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This is a post-editing issue. It's edited, rendered fine. It's how it plays in media players…
https://www.youtube.com/watch?v=0buC5j9B0ZI
And that's QT 7.7.4 and VLC 2.0.7. I've tried with QT 10.2 on my Mac and it's worse, it stutters + audio dip whereas 7.7.4 just dips the audio. -
Poor playback is usually an encoding issue.
@Scott - ProTools is definitely not a "regular audio editor". -
For the love of…
It's not a video problem, it's the way these programs work!!! -
Playback issues has to do with the file, mostly. It's a throughput problem usually. Try coding to Mpeg2 10Mbps.Originally Posted by PCC
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I guess I could try playing the audio separately in iTunes - press play on QuickTime and iTunes at the same time.
In the latest QT, it pauses *very briefly* and the audio pauses too, but if the audio was in iTunes there wouldn't be a pause, so the video pause wouldn't be quite as noticeable.
Trouble is, if you then play the clip say 10 times, by the 10th time all those brief pauses will have built up and the audio will gradually get more and more out of sync. -
I just tried that in the hopes that it would load the video quicker and avoid the pause, but it actually makes the pause longer!Originally Posted by budwzr
Playback issues has to do with the file, mostly. It's a throughput problem usually. Try coding to Mpeg2 10Mbps.Originally Posted by PCC
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The way you say it sounded like it was during playback. It's hard to follow along with you sometimes.Originally Posted by PCC
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It is during playback. I've been saying that all along! But the problem isn't with the video, it's a problem inherent with QuickTime and VLC. They both pause before repeating the video.Originally Posted by budwzr
The way you say it sounded like it was during playback. It's hard to follow along with you sometimes.Originally Posted by PCC
Do you have QuickTime/VLC on your computer? Try loading a file and looping it and see what happens!
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Most video players will give a slight pause when restarting the video. Don't ever count on continuous looping.
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You have to find a way to disguise the pause. Maybe a particle wipe. I guess that kills the perpetual motion aspect though.
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What you're talking about is not "during" playback, hahaha. It's before, or you can say after playback. Yeah, it's common knowledge that repeating(looping) media will have a "rewind pause".Originally Posted by PCC
Try loading a file and looping it and see what happens!
Last edited by budwzr; 5th May 2014 at 19:39.
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In-between playback then.
I'm gonna render a version where it repeats 5 times, and then loop that, and hope no-one is looking at the screen when it pauses! -
Hahaha, I was scared to mention that. Odds are, no one will notice. In that case, don't do any fade. Just let it get over as fast as possible.Originally Posted by PCC
In-between playback then.
I'm gonna render a version where it repeats 5 times, and then loop that, and hope no-one is looking at the screen when it pauses! -
You say common knowledge, but there are some players that don't have it… or at least there used to be cos I've done it before.
Do you know why the audio would pop at the start?
The version I uploaded to YouTube, when I tried repeating that, the audio joined up fine, but now I'm rendering it and it peaks ever so slightly at the start.
Which is what I thought would happen to begin with, I guess I just got lucky and now it's playing up!
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They might not notice the video, but the audio just skipping a beat will be really obvious.Originally Posted by budwzr
Hahaha, I was scared to mention that. Odds are, no one will notice. In that case, don't do any fade. Just let it get over as fast as possible.Originally Posted by PCC
In-between playback then.
I'm gonna render a version where it repeats 5 times, and then loop that, and hope no-one is looking at the screen when it pauses!
Don't do any fade? Lol there's no way I would do a fade (you mean fade to black?), that would defeat the whole point of it being a continuous loop. -
Just about any time audio starts without fading in (or ends without fading out) you get a pop. It's from a discontinuity in the waveform. Starting (ending) at a zero crossing might help a little.Originally Posted by PCC
When the speaker goes from the rest state to the first sample of the audio (red arrow) there will be a click.
Also be aware that most high compression audio codecs add 5 to 50 milliseconds of silence at the start of the clip. Original WAV on top, after MP3 encoding on the bottom (~47 ms silence inserted by the MP3 encoder):
And many players, VLC for example, don't play the last few frames of the video.Last edited by jagabo; 5th May 2014 at 20:12.
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Hmm, I thought so, but earlier on it wasn't doing that. Playing tricks with me…Originally Posted by jagabo
Just about any time audio starts without fading in (or ends without fading out) you get a pop. It's from a discontinuity in the waveform.Originally Posted by PCC
It fixes itself when just the music is a continuous track. Basically, at first I tested it to see if it would pop by copying all the audio tracks and video and placing them following the original tracks - simple copy and paste, see if it works. And it had the pop then, even though it was all un-rendered.
When I did this:
http://s21.postimg.org/q1a0o7glz/EXP.png
The pop went away, so I split it again, copied the latter part onto the beginning, and rendered it again, hoping the pop would have gone. But nope.
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This is a render of two fully 1080 rendered clips side by side:
https://www.youtube.com/watch?v=mqoz2R06aCI
It shouldn't even be skipping a frame like it seems to be, it wasn't doing that earlier. -
Usually I would do that, but in the case of this video, there's continuous noise. I'm thinking about it, and I could find somewhere quieter to make the cut-off point, but still, there isn't really anywhere that would facilitate a complete fade out.Originally Posted by jagabo
Just about any time audio starts without fading in (or ends without fading out) you get a pop. It's from a discontinuity in the waveform. Starting (ending) at a zero crossing might help a little.Originally Posted by PCC
[Attachment 24962 - Click to enlarge]
When the speaker goes from the rest state to the first sample of the audio (red arrow) there will be a click.
Also be aware that most high compression audio codecs add 5 to 50 milliseconds of silence at the start of the clip. -
There's a gap in the audio:Originally Posted by PCC
Even when you start audio at a zero crossing you have a discontinuity, though not as severe:Originally Posted by PCC
Usually I would do that...Originally Posted by jagabo
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That gap was created by the rendering then?
I'm rendering a 5x version at the moment, so there'll be 10 minutes before a pop/frame skip. It'll have to do I guess. -
Rendered that and it's put a single black frame at the start, the mind boggles at why Premiere can be so random!
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Fade the audio head and tail. Just a smidge. And make sure the video starts at 0.
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