GoPro video overlays
Posted: Wed Jun 12, 2013 1:16 pm
Hi
I used Harry Laptimer during my last races to take in-car video using my iphone camera and a GoPro Hero 3 to take forward video. I use avimuxer to assemble full length mp4 videos of each session (since the GoPro splits the mp4 files i chunks smaller than 4Gig), converted them to an iPhone happy format using Handbrake, edited the Metadata appropriately so that Harry Laptimer can find the videos, and sync'ed them to the iPhone using the Photo sync option of iTunes.
All of this worked and Harry Laptimer found the videos.
Now, the problem:
The Primary video is the iphone video of me driving while what I really want is the GoPro video to be the primary video. The documentation says that there is a way to re-order these two videos but I was no able to do this. Instead, I had to add a third video and added the proper iPhone in car video as a 3rd video. When I did that, Harry Laptimer seemed to automatically figure out what I wanted and I ended up with only 2 videos: the GoPro as Primary and the iPhone in-car video as picture-in-picture. Both videos contain multiple laps (The entire race) and they have the same length.
The problem is that when I then overlaid things, I encountered two problems: First, the iphone video that is now in the picture-in-picture frame is not properly sync'ed. I suspect that some of the laps, not recorded by the iphone (as shown in the lap description of the iphone video, which shows that some laps were skipped -- I am not sure why btw...) , are missing in the iphone video and that somehow this is not accounted for during the overlay process.
Second, the aspect ratio of the final product is wrong and the primary video is squished into something that looks like a 4/3 aspect ratio.
Does anybody have any suggestions?
Cheers,
N
I used Harry Laptimer during my last races to take in-car video using my iphone camera and a GoPro Hero 3 to take forward video. I use avimuxer to assemble full length mp4 videos of each session (since the GoPro splits the mp4 files i chunks smaller than 4Gig), converted them to an iPhone happy format using Handbrake, edited the Metadata appropriately so that Harry Laptimer can find the videos, and sync'ed them to the iPhone using the Photo sync option of iTunes.
All of this worked and Harry Laptimer found the videos.
Now, the problem:
The Primary video is the iphone video of me driving while what I really want is the GoPro video to be the primary video. The documentation says that there is a way to re-order these two videos but I was no able to do this. Instead, I had to add a third video and added the proper iPhone in car video as a 3rd video. When I did that, Harry Laptimer seemed to automatically figure out what I wanted and I ended up with only 2 videos: the GoPro as Primary and the iPhone in-car video as picture-in-picture. Both videos contain multiple laps (The entire race) and they have the same length.
The problem is that when I then overlaid things, I encountered two problems: First, the iphone video that is now in the picture-in-picture frame is not properly sync'ed. I suspect that some of the laps, not recorded by the iphone (as shown in the lap description of the iphone video, which shows that some laps were skipped -- I am not sure why btw...) , are missing in the iphone video and that somehow this is not accounted for during the overlay process.
Second, the aspect ratio of the final product is wrong and the primary video is squished into something that looks like a 4/3 aspect ratio.
Does anybody have any suggestions?
Cheers,
N