From what I understand, I am doing a copy that should not alter the original
content except to add dropped frames as necessary to sync the video and audio
due to transmission errors. Why is the KB/S changing and by two different
values depending solely on the suffix for the files. Which conversion is more
valid in this case? MTS or M2TS?
On Sunday, June 16, 2019, 06:36:01 PM EDT, Dennis Mungai
<[email protected]> wrote:
On Sun, 16 Jun 2019 at 22:26, David Shuman <[email protected]> wrote:
> I have a video recorder that outputs files with an .mts suffix. mediainfo
> identifies these files as BDAV more commonly .m2ts files I attempt to copy
> these files with the following commands
>
> ffmpeg -i
> "D:\Dave\Videos\010-raw\mts\Charge-05082019-2255.mts" -c
> copy
> "D:\Dave\Videos\020-fix\mts\Charge-05082019-2255.mts" 2>&1
> | wtee "D:\Dave\Videos\log\mts\ffFIX-Charge-05082019-2255.txt"
> I renamed the file to have a .m2ts suffix and tried again
> ffmpeg -i
> "D:\Dave\Videos\010-raw\m2ts\Charge-05082019-2255.m2ts" -c
> copy
> "D:\Dave\Videos\020-fix\m2ts\Charge-05082019-2255.m2ts"
> 2>&1 | wtee "D:\Dave\Videos\log\m2ts\ffFIX-Charge-05082019-2255.txt"
> The resulting output files according to mediainfo have had their video bit
> rates increased The original is 1778 kb/s regardless of file suffix,
> the .mts copy is 1817 kb/s and the .m2ts copy is 1870 kb/s.
>
> Why do the copies have higher video bit rates? Nothing else significant
> appears to have changed the .mts claims format is mpeg-ts on the output,
> all other formats both input and the .m2ts output claim to be BDAV.
> Is there a way I can keep the bit rate the same so the copy matches the
> original except for corrections made during the copy for missing franes,
> etc?
>
>
>
Most likely you're seeing the effects of muxer overheads.
From your console: muxing overhead: 9.707805%
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