I have h.264 files which are exported from an MDR unit. When played with in the applications 'player' there is the video, audio as well as gps telemetry data being dispayed in seperate value windows.
When I load this file into Premeire Pro CS6 or any other video editor, there is no audio track, not 'other' data. There is no audio playing period.
The software for these units make reference to an 'aviCon' function, the files itself only has a h.264 extension. If I try and use any demuxer option other than h.264 the video does not work.
My understanding is that h.264 can only contain a video track, it's just an encoding scheme or format.
As well when the dashboard controller for these units exports video, there is just the one file created, there is no xml, json or anything else created which might contain the gps information, but it's there when you play it. Offline I might add, so it's not pulling anything from a remote connection/server.
There is no .mp4 container or file either, just this one file with h.264 extension.
I need to extract the GPS, don't reallly care about the audio.
Does anyone have any idea how this is possible? I've asked other video people, I'm not totally unfamiliar with video formats, codecs either. I'm just not super well versed with h.264 as I don't really do much video work anymore - this kinda got dumped on me.
Any help would be apprecitated and thanks in advance.
Did you try throwing the file at ExifTool to see what it says?
- Phil
Hi Phile, thanks for reply... Yes, comes back as error: unknown file type. Basically won't read it.
I'm not that familiar with it, if there's a command string that might work other than the couple I tried I'll try that.
I should add that the file plays in VLC. Also it's part of a proprietary video monitoring suite, thought I should mention that.
OK, interesting. I have never seen a h.264 file like this.
- Phil
Very odd for sure... Encoded as h.264, but if the file has the h. in the extension the file won't play.
Somewhere within this video file is audio and gps data.
I can't send you the file or I would, If at some point I can get into the other data streams and take out anything that legal would have issues with I'd be more than happy to send it to you so you can bang around with it, I've never seen anything like before.
I've shown this clip running in Premiere Pro to 3 people who edit for a living and all of them are completely stumped as to how a h.264 stream is holding audio and gps data and no metadata shows up, not additional tracks.
If it helps here's a hint. This is Chinese technology and coding.