only used internally by ts muxer

pi_service_types is of type pointer-to-uint8_t, so the previous
implementation would allocate far more memory (as a pointer is bigger
than uint8_t) than what is actually required.
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

otherwise sidx/tftd offsets in media time are unusable

pes_dts is interpolated from data position and
from, sometimes innacurate/incorrect, length which
ends next block being too early by few ms

should avoid most of the too strange dts errors

So it now applies to content created by demux's PMT hotfix

vlc_array_item_at_index returns a value of type pointer-to-void,
meaning that the pointer is implicitly convertible to the destination
type (there is no need for the explicit cast).
Signed-off-by: Thomas Guillem <thomas@gllm.fr>

for example avcodec encoder marks all audio blocks as type_i and we don't
want split for example livehttp output based on those.

In order to clean up the dynamically allocated resources owned by an
ogg_packet, ogg_packet_clear should be called.

 - https://xiph.org/ogg/doc/libogg/ogg_packet_clear

closes #17334
Signed-off-by: Thomas Guillem <thomas@gllm.fr>