|Teresa Seito 7 years ago|
To anyone who wants to know about the use of H4N Zoom audio and syncing it with Canon EOS DSLRs...
I want to share my experience so if you have a difficult time like I did, you can have a solution.
Originally I recorded video on a Canon 60d, obviously in the h.264 codec at 24 fps (23.976 NTSC) at 1920 X 1080p. On the Zoom, I recorded audio in the .wav format at 48 kHz at 24 bits.
I imported both formats into Premiere Pro and then I synced both assets beautifully. However, I found that whenever I exported to a final format, the audio and video was always out of sync.
I played with various combinations of exported formats and I thought it odd that whenever I opened the exported files in AE or Premiere Pro, the audio and video would sync up! But whenever I exported to Quicktime or to H.264 Youtube HD, they would never sync up fully. There was always a compromise between taking a hit in video quality to make both sync, or to have beautiful video footage but no audio sync.
And then I decided to transcode the Canon H.264 video to an AVI format instead. Then I took the AVI file and the WAV audio and imported both back into Premiere Pro.
This time, the results were amazing! Unlike before, it didn't matter what format I exported out to, the video and audio remained synced.
Now I don't know all the specifics, but it seems that Premiere Prot didn't like to combine the Canon H.264 format native file with the Wav file, but it had no problem combining the Canon footage AFTER it was transcoded to AVI using Cineform's Neoscene.
Again, I'm not certain of the physics, but I wrestled with this for 8 hours, and now only AFTER transcoding the footage, does my footage sync perfectly with the audio from the H4N Zoom without any sync issues.
I post this because I have read elsewhere that people have had problems with this too. And that engineers have looked at this phenomenon at Youtube and not been able to understand why there is sync issues. They keep telling Youtubers to follow the correct upload procedures but they get the same results. Logic tells me I should be able to combine the Canon H.264 footage with a Wav file in Premiere Pro with no problem and export without any sync issues, but experience has taught me different. Until someone with more info can post on this, I will use this as my method. I hope it helps whoever needs it.