[FFmpeg-user] retain timecode stream when transcoding v210 to FFV1/MKV

[Christian Sievers]

Hello everyone,

Thank you, this has been very helpful! So I think I have two options:

- Wait until Matroska fully supports timecodes, which might take a while.

- Or continue to use Quicktime, but with FFV1. Not as open and free, but supports timecode data. This would be a somewhat unusual way to go, I suppose.



> On 3. May 2025, at 13:39, Jerome Martinez <jerome at mediaarea.net> wrote:
> 
> Le 03/05/2025 à 12:57, BloodMan a écrit :
>> Hello Christian,
>> 
>> OK. right.
>> But in general you have answer in error description: " Only audio, video, and subtitles are supported for Matroska." This means that timecodes was not supported by matroska.
> 
> Tiny correction: not (yet) supported by FFmpeg for Matroska
> 
> 
>> 
>> In RFC you have confirmation: https://datatracker.ietf.org/doc/rfc9559/
>> "11.  Timestamps - Historically, timestamps in Matroska were mistakenly called timecodes."
>> 
>> So, or at least that's how I understand it, Matroska doesn't have timecode support, only timestamp support - which is not the same and apparently "doesn't convert" - or at least that's not the role of the encoder.
> 
> It is relatively new but there is now a support timecodes in Matroska:
> https://github.com/ietf-wg-cellar/matroska-specification/blob/master/cellar-codec/block_additional_mappings/smpte-st12-1-timecode.md
> 
> We are working on implementing that, we plan to send a patch to ffmpeg-devel when it is ready.
> 
> Jérôme
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
> 
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".