edde746
deaa06826c
High-bitrate HEVC episodes showed smeared frames and green flashes for the first 10-15 seconds of playback on the Fire TV Stick 4K Max 2nd gen with the mpv backend, while ExoPlayer played the same file cleanly (#2227). The reporter's clip failed at exactly two timestamps on every run: the two IDR frames larger than 1 MiB. The FFmpeg mediacodec decoder never set "max-input-size" on the codec format, so OMX.MTK.VIDEO.DECODER.HEVC allocated 1,052,672-byte input buffers and FFmpeg split any larger packet across several queueInputBuffer calls. The MediaTek VPU treats each buffer as a complete access unit, rejects the remainder ("invalid u4BufferAccumulated"), fails the slice and conceals with lost-picture references until the next IDR. ExoPlayer is unaffected because media3 sizes HEVC input buffers at max(2 MiB, w*h*3/4) and never splits a sample. Move the native pin to edde746/mpv-build@83879375c9, which sizes the buffers the same way ExoPlayer does for H.264, HEVC, MPEG-4, VP8, VP9 and AV1 and logs a warning if a packet still does not fit. Verified on the AFTKRT with the reporter's clip: zero VPU errors and no lost pictures across repeated runs, and an H.264 file with ~1 MB keyframes still plays on the MediaTek AVC decoder; both files also play on a Pixel 7 (Exynos C2). Apple, Linux and Windows assets are unchanged (their content keys did not move). close #2227
58 lines
2.1 KiB
JSON
58 lines
2.1 KiB
JSON
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