[FFmpeg-user] Setting colour range.
gyandoshi at gmail.com
Tue Nov 27 17:55:45 EET 2018
On 27-11-2018 09:17 PM, Gyan Doshi wrote:
> On 27-11-2018 08:59 PM, Kieran O Leary wrote:
>> Can this metadata ever be set at a container level for mov? Must it
>> be the stream that holds this info?
> The muxer only writes it for MP4s,
> The QT spec doesn't accommodate its signaling :
Correction. Meant to quote this,
"The remaining component values (e.g., 1-15 and 241-254 for n=8
bits and 4-63 and 961-1019 for n=10 bits) accommodate occasional filter
undershoot and overshoot in image processing. In some applications,
these values are used to carry other information (e.g., transparency).
The writer of a QuickTime image may use these values and the reader of a
QuickTime image must expect these values."
This implies that 'these values' is treated as 'other information'
rather than range expansion.
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