The H.265 specification is quite clear on this case:
> When min_display_mastering_luminance is not in the range of 1 to
> 50000, the nominal maximum display luminance of the mastering display
> is unknown or unspecified or specified by other means not specified in
> this Specification.
And so the current code is correct in marking luminance data as invalid
if min luminance is set to 0. However, this breaks playback of at least
several real-world Blu-ray releases, for example La La Land, Planet of
the Apes, and quite possibly a lot more. These come with ostensibly
valid max_luminance tags (1000 nits), but min_luminance set to 0.
Loosen up this requirement by guarding it behind FF_COMPLIANCE_STRICT.
We still reject blatantly invalid metadata (wrong value range on
luminance, max set to 0, max below min, min above 50 nits etc.), so this
shouldn't cause any unintended regressions.
Fixes: https://github.com/mpv-player/mpv/issues/14177
As we can read in ST 2086:
Values outside the specified ranges of luminance and chromaticity values
are not reserved by SMPTE, and can be used for purposes outside the
scope of this standard.
This is further acknowledged by ITU-T H.264 and ITU-T H.265. Which says
that values out of range are unknown or unspecified or specified by
other means not specified in this Specification.
Signed-off-by: Kacper Michajłow <kasper93@gmail.com>
Signed-off-by: Niklas Haas <git@haasn.dev>
There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.
Keep it for external users in order to not cause breakages.
Also improve the other headers a bit while just at it.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
H.274 specifies that film grain parameters are signalled as intended for
4:4:4 frames, so we always signal this, regardless of the frame's actual
subsampling.
This allows this common H.274 SEI to be parsed from both H.264
as well as HEVC, as well as probably from VVC in the future.
Generally attempts to keep the original code as similar as possible.
FATE test refererence changes only change the order of side data
export within a single frame. Nothing else seems to have changed.
This allows this common H.274 SEI to be parsed from both H.264
as well as HEVC, as well as probably from VVC in the future.
Generally attempts to keep the original code as similar as possible.
FATE test refererence changes only change the order of side data
export within a single frame. Nothing else seems to have changed.
Defined by H.274, this SEI message is utilized by iPhones to save
the nominal ambient viewing environment for the display of recorded
HDR content. The contents of the message are exposed to API users
as AVFrame side data containing AVAmbientViewingEnvironment.
As the DV RPU test sample is from an iPhone and includes Ambient
Viewing Environment SEI messages, its test result gets updated.
This unfortunately involved adding some parameters
to ff_h2645_sei_to_frame() that will be mostly unused.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is valid for HEVC; in fact, the ATSC-HEVC spec [1] simply
refers to the relevant H.264 spec.
It is also trivial to implement now: Just move applying AFD
to ff_h2645_sei_to_frame() and stop ignoring AFD when parsing
a HEVC SEI containing it.
A FATE-test for this has been added.
[1]: https://www.atsc.org/atsc-documents/a3412017-video-hevc/
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
There are only slight differences between H.264 and HEVC
for this side data, so it makes sense to share the code.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit only factors out freeing the common SEI parts,
not whether the fields indicating whether an SEI is present
shall be reset. H.264 and HEVC differ in this regard
(ff_h264_sei_uninit() really resets, whereas ff_hevc_reset_sei()
only uninits.) and neither actually honours the persistency
as prescribed by the relevant specs.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Niklas Haas
Michael Niedermayer
Kacper Michajłow
James Almer
Andreas Rheinhardt
Anton Khirnov
Jan Ekström
Raphaël Zumer