[blimey]

Originally Posted by billsantos

I tried this method, but it didn't work. The FLVextract program did not extract the needed files and I am trying to do this without having to convert, since conversions cause loss of quality each time.

Which file did FLVExtract fail to extract?

Both HD and HD-1080p files at CBS are h.264/aac. FLVExtract shouldn't have any problem with either. Using this method is not transcoding (converting), it is only demuxing and remuxing. There is no loss.

Originally Posted by billsantos

The method I'm using involves extracting and resampling the audio file separately from the video and then merging the two once the audio file is in sync. However, I have not found an easy way to do this and the task is quite tedious. It isn't as simple as resampling the audio as sometimes an audio shift also appears to be needed. Due to all the time it's taken me to realign just one or two movies, I question whether future movies are worth it. I thought surely someone might have a more efficient method, or could recommend some software that would aid the task but so far there has been limited response.

You shouldn't have to do any of this. Any "stuttering" or sync issues are most likely due to the flv container produced by GetFLV.

Originally Posted by billsantos

I have been running into this problem with standard HD and full HD videos from CBS. Full HD are already at 24 fps film speed and should present no problems when I view them on the large screen LCD tv. However, the standard HD vids have been another matter. They seem to play at 23.5 to 23.976, show significant stuttering, and they aren't going to display properly on most LCD's because they are not at 24 fps. Just trying to change that small amount of frame speed (from 23.5 to 24 fps) and keep the audio in sync has been one of the most difficult tasks I've ever dealt with in audiovisual. I had hoped someone else had a reasonable solution. CBS is popular and I'm sure others have been running across the same issues with HD vids.

23.976 is a standard framerate. This by itself does not cause the issues you describe.

I've seen issues with flv files produced by getflv, but they are always solved by simple demuxing and remuxing (which eliminates getflv's faulty .flv container).

Carefully follow the steps with FLVExtract and mp4box again, and describe exactly where you have trouble.

You can also quickly rebuild the container with ffmpeg like this:

ffmpeg -i "CBS_file.flv" -vcodec copy -acodec copy "NewName.flv"

--or this:

ffmpeg -i "CBS_file.flv" -vcodec copy -acodec copy "NewName.mkv"