Reverts ef479ee6.

lut3d requires framesync

chromashift requires framesync

AVTB is 1/AV_TIME_BASE

AVTB is 1/AV_TIME_BASE

AVTB is 1/AV_TIME_BASE

scale_cuda includes scale.h

In scearios where a Temporal Unit is written right after reading it using the same
CBS context (av1_metadata, av1_frame_merge, etc), the reference frame state used
by the writer must not be the state that's the result of the reader having already
parsed the current frame in question.

This fixes writing Switch frames, and frames using short ref signaling.
Signed-off-by: James Almer <jamrial@gmail.com>

Added default values, correct strings for default model path and pool
method.

Option wait_for_tc only takes effect if tc_format is set

The number of bits in a PutBitContext must fit into an int, yet nothing
guaranteed the size argument cbs_write_unit_data() uses in init_put_bits()
to be in the range 0..INT_MAX / 8. This has been changed.

Furthermore, the check 8 * data_size > data_bit_start that there is
data beyond the initial padding when writing mpeg2 or H.264/5 slices
could also overflow, so divide it by 8 to get an equivalent check
without this problem.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>