On 25.07.2018 10:04, Peter B. wrote:
Hi Reto,
On 24/07/18 21:47, Reto Kromer wrote:
We do rewrap ProRes into Matroska. Which is the reason for transcoding
it to FFV1?
...I guess the usual "way out" of proprietary formats?
As well as format normalization (to have less mixed codecs).
I agree that format normalization towards a loss-less codec ensures that
content will be accessible now and in the future in a more reliable way.
Keeping multiple codecs requires maintenance workload for multiple decoders.
Back to the original topic of preserving color metadata: I also stumbled
over this issue and if I remember correctly there have been multiple
attempts to fix this but unfortunately none of them got enough
attraction / guidance to be accepted into the FFmpeg code-base.
For example:
https://ffmpeg.org/pipermail/ffmpeg-devel/2018-February/225512.html
https://ffmpeg.org/pipermail/ffmpeg-devel/2018-May/230139.html
Luckily in my workflows I have all the properties in some "media format"
parameter-set besides the media file so I just manually add the right
flags on the encoder side instead of depending on them being forwarded
correctly.
Regards,
Tobias
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