Re: Looping m4a audio

2013-02-24 Thread As_Simon
ut there's a short > blip each time it rolls around to the beginning. Is there a way to > seamlessly loop those? -- View this message in context: http://runtime-revolution.278305.n4.nabble.com/Looping-m4a-audio-tp4661000p4661077.html Sent from the Revolution - User maili

Re: Looping m4a audio

2013-02-24 Thread J. Landman Gay
On 2/24/13 3:00 PM, Klaus on-rev wrote: Hi Jaqueline, Am 24.02.2013 um 21:49 schrieb J. Landman Gay : ... The link to the enhanced QT external docs didn't work and I couldn't find a new one. Here it is: P

Re: Looping m4a audio

2013-02-24 Thread Klaus on-rev
Hi Jaqueline, Am 24.02.2013 um 21:49 schrieb J. Landman Gay : > ... > The link to the enhanced QT external docs didn't work and I couldn't find a > new one. Here it is: > We'd like to avoid externals if possib

Re: Looping m4a audio

2013-02-24 Thread J. Landman Gay
On 2/24/13 6:20 AM, Colin Holgate wrote: The example loop has a clunk in it, even in QuickTime Player. I cleaned that up and could then get clunk-free looping of AIF or M4A in LiveCode. But, there was a moment of silence when it loops. That is the case in LiveCode with either AIF or M4A as exter

Re: Looping m4a audio

2013-02-24 Thread Scott Rossi
Your experience is consistent with mine: seamless looping playback with a player is unreliable. Looping imported audio clips works better, perhaps because the audio is loaded into memory, but is still unreliable and requires the audio to be in one of the few supported formats. There's another

Re: Looping m4a audio

2013-02-24 Thread Colin Holgate
I went back to try other ideas, and the looping was no longer successful, but as I tried things it would be good again, then not good again! For a moment I thought I had a better solution, which you should try, in case it is as good as it was for me, momentarily. Try this with the player set di

Re: Looping m4a audio

2013-02-24 Thread Colin Holgate
Another solution to the problem occurred to me, that works with external files, if you are allowed to make the M4A be MOV: Open the M4A in QuickTime Player 7 Command-J Select the sound track Click the "Other Settings" tab Click the checkbox Cache (hint) Note the optimistic note "Improve looping p

Re: Looping m4a audio

2013-02-24 Thread Colin Holgate
The example loop has a clunk in it, even in QuickTime Player. I cleaned that up and could then get clunk-free looping of AIF or M4A in LiveCode. But, there was a moment of silence when it loops. That is the case in LiveCode with either AIF or M4A as external files, and also in QuickTime Player.

Re: Looping m4a audio

2013-02-23 Thread J. Landman Gay
I forwarded Colin's response to the client and this is his reply: *** start quote *** The music files we make have sample accurate loop points (however, audibly they don't need to be sample-accurate, just really close to loop perfectly when they are uncompressed). Any well-looped .aiff or .wav

Re: Looping m4a audio

2013-02-23 Thread Alex Shaw
Hi Jacqueline Try loading the file into a audio editor like Audacity (http://audacity.sourceforge.net) and check the beginning to end of the clip. Blips should be obvious and generally if the sound has been trimmed badly then a simple tool like audacity allows you to smooth things out. If

Re: Looping m4a audio

2013-02-23 Thread J. Landman Gay
Thanks Scott. We're trying to avoid externals but I may be able to talk them out of that if nothing else works. It isn't a real "blip", it's the stutter that happens between loops like you said. I've asked the client if he's willing to share one of the files, I'll see what he says. On 2/23/1

Re: Looping m4a audio

2013-02-23 Thread Scott Rossi
Hi Jacque: In my experience, I've never been able to reliably loop a native player seamlessly. Even if it I got it working on one system, there's always another that runs slowly or has multiple process processes running, and a split second pause is audible in between loops. The only way I've eve

Re: Looping m4a audio

2013-02-23 Thread Colin Holgate
Blips would happen if the looping isn't good, or if the sound ends with the last sample not at a zero value. There's another complication with compressed audio, in that the sound is compressed in particular size packets. That could cause the loop to either have silence at the end, or to cut int

Looping m4a audio

2013-02-23 Thread J. Landman Gay
A client wants to use m4a audio files that loop, but there's a short blip each time it rolls around to the beginning. Is there a way to seamlessly loop those? I said I'd ask here since we have some audio pros on the list. -- Jacqueline Landman Gay | jac...@hyperactivesw.com HyperAc