Re: [PATCH v2 0/4] MR10421: winegstreamer: Improve quartz MPEG-1 video seeking.
March 27, 2026
5:01 p.m.
On Wed Mar 25 14:49:28 2026 +0000, Akihiro Sagawa wrote:
As you may know, MPEG video uses inter‑frame compression. I'm still checking the details, but it appears that the MPEG video decoder receives P‑frames and B‑frames and keeps the required reference frames until all dependencies are resolved. Because of this, when frames appear in a sequence like PBBPBBPBB after seeking, a buffer of eight samples was not sufficient. Oh indeed, I assumed that we implemented things differently and didn't actually hold onto all the P/B frames in the decoder. That makes sense then.
-- https://gitlab.winehq.org/wine/wine/-/merge_requests/10421#note_134100
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Elizabeth Figura (@zfigura)