USA OTA video audio sync vocabulary please?

[MarcMiller]

Hello
I watch and record my television exclusively via a computer tuner from USA over the air television. I started having transcoding sync problems and I consequently found out that there was some sort of timestamp system for both the multiplex audio and video transmission on USA over the air television. However I have been finding it difficult to pin down just what are the digital fields which do this time stamping in both the audio and video streams. Maybe it's stupid but I thought the names of these fields and exactly where they are might be important in asking further questions on these forms on just what software honors and dishonors these fields . So can somebody help me out on this? When I do a Google or Bing search for say "USA OTA video audio sync " I get all sorts of outdated and erroneous links. So maybe it is not important but just exactly how does audiovideo synchronization work on US over the air television? What are the exact names of the fields employed to do this? And where are these fields exactly located? Perhaps a link to the answer may be adequate but I have not been able to find this information on my own so please help. And thanks.

[yoda313]

I haven't worked with an ota capture in quite some time but an old program that might help you out is projectx. It works with ts files or whatever type of captured digital files you are using. It can provide a lot of detail in your file.

Also what are you converting to and what programs are you using? There might be a better way to do what you want to do. It is possible your workflow might be introducing the synch errors.

Two popular programs to check out are handbrake (mostly for h264 creation, I'm not sure it has any mpeg output ability) and format factory (which can output to mpeg and h264 and quite a few others as well).

So a little more detail in your process would be helpful. We can try to provide alternatives or spot some common errors that others might have experienced.

Also you might consider investing in large harddrives and a settop media player that can play your recorded files natively. Than you can simply copy the file intact to your harddrive and skip any conversions altogether.

-----------

One last thing it would be beneficial for a large field of text to include paragraphs next time. It will make it easier to read and you might get more responses from some members who may loath poorly laid out text.