Question: In a 3GP file, where are de-interleaving buffer parameters for H.264 (AVC) and de-packetization buffer parameters for H.265 (HEVC) typically included, given their single set per stream constraint?
Option 1: Within every video frame to ensure real-time decoding adjustments.
Option 2: In a separate track for dynamic buffer management across all streams.
Option 3: As part of the audio metadata for synchronized playback adjustments.
Option 4: In the corresponding media-level fragment, as per MIME/ specifications.
Explanation: Given the single set per stream constraint for de-interleaving (H.264) and de-packetization (H.265) parameters, including them in the media-level fragment aligns with the MIME/ specifications for these codecs, ensuring consistency without contradicting other HRD parameters that might be present. This approach also efficiently manages buffer settings at a stream level, rather than necessitating frame-by-frame or track-wide adjustments.