Mark Lane (mlane@xxxxxxxxxxxxx): > > In my capture app, I use the timestamps I get after the full capture > > and do a linear approximation of the difference between the amount > > of audio received and amount of video. I can then use that to > > resample the audio when writing to the destination file. > > > Is a timestamp at the end going to be good enough for proper > interpolation? > > I remember recording a episode of Startrek:TNG as a test and about 15 > minutes into the record the sound cut out temporarily for a second or > two leaving the rest of the video out of sync. > > If I understand you correctly, your method of interpolation would try > to stretch the sound to fit the video. If it were done on this video > that would have messed up the sound for the whole clip not just the 2 > seconds where the problem was. Sure but I also watch for dropped audio frames and replace them with silence. For my purposes, I want high quality transfers of VHS tapes etc. So, if I ever drop a frame of audio or video, that means a re-record for me. -- Billy Biggs vektor@xxxxxxxxxxxx
