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-rw-r--r--DOCS/man/options.rst7
1 files changed, 7 insertions, 0 deletions
diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst
index 0631fd6a12..f2b94a7e1e 100644
--- a/DOCS/man/options.rst
+++ b/DOCS/man/options.rst
@@ -489,6 +489,13 @@ Playback Control
A workaround is to remux to a format like mkv, which enforces packet
boundaries. Making mpv cache the entire file in memory also works.
+ - Backward playback with Vorbis does not work. libavcodec's decoder
+ discards the first Vorbis packet (after each decoder reset), and the
+ mechanism behind ``--audio-reversal-buffer`` assumes that it strictly
+ outputs a frame for each packet fed to it (the mechanism discards output
+ based on frame count, not timestamps). Since this tries to decode each
+ frame on its own, the player never gets a usable audio frame.
+
Tuning:
- Remove all ``--vf``/``--af`` filters you have set. Disable deinterlacing.