fftools/ffmpeg: rewrite checking whether codec AVOptions have been used

Share the code between encoding and decoding. Instead of checking every
stream's options dictionary (which is also used for other purposes),
track all used options in a dedicated dictionary.

1 files changed, 3 insertions, 0 deletions

diff --git a/fftools/ffmpeg_mux.h b/fftools/ffmpeg_mux.h
index 1e9ea35412..1c1b407484 100644
--- a/fftools/ffmpeg_mux.h
+++ b/fftools/ffmpeg_mux.h
@@ -99,6 +99,9 @@ typedef struct Muxer {
 
     AVDictionary           *opts;
 
+    // used to validate that all encoder avoptions have been actually used
+    AVDictionary           *enc_opts_used;
+
     /* filesize limit expressed in bytes */
     int64_t                 limit_filesize;
     atomic_int_least64_t    last_filesize;