[FFmpeg-user] Copying h264 Quicktimes makes insane timecode

Tim Nicholson nichot20 at yahoo.com
Thu Nov 1 10:21:39 CET 2012

On 31/10/12 20:34, Thomas Worth wrote:
> On Wed, Oct 31, 2012 at 12:39 PM, Bob Maple <bobm-ffmpeg at burner.com> wrote:
>> On 10/31/2012 1:21 PM, Thomas Worth wrote:
>>> Upload the file somewhere and post a link if you can.
>> It looks like you can duplicate the results by taking any Quicktime, even
>> one without source code, and doing a copy through ffmpeg setting your own:
>> -i Blah.mov -codec:v copy -codec:a copy -timecode 01:00:00:00 New.mov
>> With that, I even get symbols in the timecode like @ and < instead of
>> digits!
> This is definitely broken. The frame timebase value (it's an 8 bit
> value) in the tmcd atom within stsd is not being written. It's zero,
> which confuses the reader. Apparently, it only gets written when you
> force the frame rate using -r.

That sounds like an old issue, has it crept back in again?

> [..]


More information about the ffmpeg-user mailing list