[Help] Resyncing audio from completely different masters, potential automation?
|
[Help] Resyncing audio from completely different masters, potential automation?
|
Posts: 58
Threads: 11 Joined: 2020 May Thanks: 24
Given 21 thank(s) in 8 post(s) Country: 
2021-10-28, 04:51 AM
Hello, as the title suggests, I am wondering if there is any way I can somehow make audio synchronisation of two (almost)completely different sources a little easier, or if it really is completely necessary to do it all shot by shot, frame by frame? I know a programme that does this with subtitles that I have used with great success, I thought that would be harder than this, so I am a bit puzzled. Thanks in advance to whoever responds.
Posts: 848
Threads: 202 Joined: 2019 Aug Thanks: 1227
Given 1152 thank(s) in 382 post(s) Country: 
2021-10-28, 08:34 AM
If you want an accurate sync it’s got to be frame by frame. With two different masters you could have lots of differences, even if it’s just a frame off every so often it starts to add up over a 150k frame movie.
Thanks given by: Mediahead
2021-10-28, 09:03 AM
Let's say, Mad Max style, that the length of all the different masters are the same (with no cuts), and the delay only being at the beginning.
Could the initial delay be automated by some software? After, FCPX can align multi-angles automatically. 
Posts: 7,153
Threads: 601 Joined: 2015 Jan Thanks: 1081
Given 1466 thank(s) in 963 post(s) Country: 
2021-10-28, 09:16 AM
(2021-10-28, 09:03 AM)Stamper Wrote: Let's say, Mad Max style, that the length of all the different masters are the same (with no cuts), and the delay only being at the beginning. Sadly it's often not true... Apart the obvious delay at the beginning, usual differences are around reel change (about every 20 minutes) one or two frames. So, in the best case, no frame difference and only delay; in worst case (of the same cut) several frames missing from one or both sources. Easiest sync based on frames; most accurate sync based on waveforms.
Posts: 58
Threads: 11 Joined: 2020 May Thanks: 24
Given 21 thank(s) in 8 post(s) Country:
2021-10-28, 02:20 PM
Thanks for the replies. Yea, I've already started doing a waveform sync. I seem to be stuck with a worse than worst case scenario where multiple frames are missing from every shot, so I'm just going to have to trudge through here.
Posts: 7,153
Threads: 601 Joined: 2015 Jan Thanks: 1081
Given 1466 thank(s) in 963 post(s) Country:
2021-10-28, 02:38 PM
Posts: 848
Threads: 202 Joined: 2019 Aug Thanks: 1227
Given 1152 thank(s) in 382 post(s) Country:
2021-10-28, 02:46 PM
(2021-10-28, 02:20 PM)Mediahead Wrote: Thanks for the replies. Yea, I've already started doing a waveform sync. I seem to be stuck with a worse than worst case scenario where multiple frames are missing from every shot, so I'm just going to have to trudge through here. I often follow this process for problem syncs where there are a lot of frame differences: https://fanrestore.com/thread-2776.html Thanks given by: Mediahead
Posts: 58
Threads: 11 Joined: 2020 May Thanks: 24
Given 21 thank(s) in 8 post(s) Country:
(2021-10-28, 02:38 PM)spoRv Wrote:(2021-10-28, 02:20 PM)Mediahead Wrote: multiple frames are missing from every shot Nope, it's just a really really bad transfer. That's why I'm only using the audio from it. Edit: to clarify, there are jumps, reel change marks, or splices at these missing frames. |
|
« Next Oldest | Next Newest »
|
| Possibly Related Threads… | |||||
| Thread | Author | Replies | Views | Last Post | |
| [Help] Mono Audio in 1.0 or 2.0? | bendermac | 11 | 7,373 |
2024-07-07, 02:32 PM Last Post: Falcon |
|
| Streaming: Video/audio quality (bitrate) | spoRv | 2 | 2,009 |
2021-12-21, 08:34 PM Last Post: spoRv |
|
| How lossy is a lossy audio codec? | spoRv | 12 | 6,429 |
2021-09-07, 12:14 PM Last Post: junh1024 |
|
| minimum audio bit-depth needed... | spoRv | 10 | 4,677 |
2021-09-02, 11:24 PM Last Post: spoRv |
|
| "Left-leaning" audio? | deleted user | 29 | 11,251 |
2020-11-18, 11:43 PM Last Post: zoidberg |
|
| Help resyncing "The Terminator" | Dinsdale | 4 | 3,221 |
2020-04-24, 09:34 PM Last Post: Dinsdale |
|
| rating audio tracks quality | spoRv | 10 | 12,088 |
2017-02-16, 11:39 PM Last Post: zoidberg |
|
| Dolby matrixed audio on modern equipment | captainsolo | 11 | 12,860 |
2016-09-20, 09:43 PM Last Post: captainsolo |
|
| Laserdisc audio on Bluray - LPCM or FLAC? | Colek | 4 | 5,960 |
2016-07-13, 03:06 AM Last Post: jerryshadoe |
|
| Brickwalled audio | FrankT | 9 | 10,511 |
2016-07-01, 10:15 PM Last Post: Avatar_Emil |
|
I guess there's something wrong... check these things: