[FFmpeg-user] Syncing clips based on audio waveform?
pkoshevoy at gmail.com
Sat Mar 2 00:00:35 CET 2013
On 3/1/2013 3:17 PM, Pavel Koshevoy wrote:
> On 3/1/2013 9:38 AM, Arthur Wait wrote:
>> Hi all,
>> This is coming from out of left field I imagine, but I'm wondering if
>> anyone knows of a filter (or chain of filters) which would allow me to
>> align/sync two video clips based on matches in their audio waveforms.
>> I'm shooting events with multiple cameras and would like to either
>> trim the
>> clips to a precise, matching starting frame or generate a metadata
>> marker indicating how far off one clip is from the other in time. Then I
>> can trim the clips to match.
>> Is this possible in ffmpeg (or anywhere else for that matter!)?
> I don't know if there is anything in ffmpeg that would accomplish what
> you need right now, and I doubt implementing it as a filter is very
> practical. It could be implemented as a separate utility -- give it a
> reference file and another file and it spits out time offset of the
> second file relative to the reference file (if it can find a
Now that I think about it, this feature probably should be implemented
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