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in repository ffmpeg.

commit de3f99d74b916ea8363f2c81ca343980844f6031
Author:     Andreas Rheinhardt <[email protected]>
AuthorDate: Fri Jan 30 13:24:06 2026 +0100
Commit:     Andreas Rheinhardt <[email protected]>
CommitDate: Fri Jan 30 13:24:06 2026 +0100

    avformat/cafenc: Truncate values for avio_w8()
    
    Fixes triggering av_assert2() in avio_w8().
    
    Signed-off-by: Andreas Rheinhardt <[email protected]>
---
 libavformat/cafenc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavformat/cafenc.c b/libavformat/cafenc.c
index 3a3493717d..5f2d79e0a7 100644
--- a/libavformat/cafenc.c
+++ b/libavformat/cafenc.c
@@ -311,7 +311,7 @@ static int caf_write_trailer(AVFormatContext *s)
                     for (int j = 4; j > 0; j--) {
                         unsigned top = caf->byte_size_buffer[i] >> j * 7;
                         if (top) {
-                            avio_w8(pb, 128 | top);
+                            avio_w8(pb, 128 | (uint8_t)top);
                             size++;
                         }
                     }
@@ -322,7 +322,7 @@ static int caf_write_trailer(AVFormatContext *s)
                     for (int j = 4; j > 0; j--) {
                         unsigned top = caf->frame_size_buffer[i] >> j * 7;
                         if (top) {
-                            avio_w8(pb, 128 | top);
+                            avio_w8(pb, 128 | (uint8_t)top);
                             size++;
                         }
                     }

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