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JJenkxandClaude Opus 5.5
28d9f26bdd
sceVideodec2Flush drained libavcodec with an empty packet whenever the decoder
was not already flushing, and the next sceVideodec2Decode then restarted the
decoder with avcodec_flush_buffers, dropping its reference pictures. A caller
that flushes after every access unit, as Sony's PSP emulator does for its
H.264 movies, lost every P picture after the first: libavcodec withholds
pictures after a restart until it reaches a keyframe, so Daxter (PPSA09695)
got 8 pictures from 459 access units and showed a black screen ("Failed to
obtain a video frame") instead of its intro movie.
Flush now drains only when a decoded access unit has not produced its picture
yet. With nothing pending there is nothing to return, and the decoder keeps its
references for the units that follow.
Co-Authored-By: Claude Opus 5.5 <[email protected]>