> On Feb 13, 2019, at 10:04 AM, Ted Park <kumowoon1...@gmail.com> wrote:
> 
> I wonder if adding -f mov to the output options, or just using mov extension 
> makes it handle the timecode track?



Thanks Ted.

I'm not familiar with the -f option and didn't immediately find it in the 
FFmpeg documentation
How does that work?

Tried simply switching to the .mov extension instead of .mp4
The tracks mapped properly, the quality is good, and -- though it didn't occur 
to me until your suggestion -- .mov is preferable to .mp4 for our workflow.
So thanks for the suggestion.  An "obvious" idea that only became obvious after 
you suggested it.

BUT for some reason the time code changed.  So a clip that had started at TC 
start/end of 12:31:20:13 / 12:31:42:16 converted to 12:30:35:12 / 12:30:57:15.
Duration matches, frame rate matches, but the start/end TCs are earlier by 
45:01.




> On Feb 13, 2019, at 10:57 AM, Gyan <ffm...@gyani.pro> wrote:
> 
> unmap the data streams,
> 
>     -i '/Path/To/ProRes/Source.mov' -map 0 -map -0:d -g 48 -c:v libx264 
> -profile:v baseline -crf 16 -c:a aac -b:a 256k -vf scale=1280:720 -pix_fmt 
> yuv420p '/Path/To/Mp4/Dest.mp4'


Gyan
-map -0:d fixed the problem entirely.
Audio Tracks are good / TC is good both for .mov and .mp4

Any idea why failing to un-map the data streams causes the time code to change?

Thanks to both of you.  Very helpful!!



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