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in repository ffmpeg.

commit 21ff60d2cf7dfe00400ffef6a8843736f4cf9a2f
Author:     James Almer <[email protected]>
AuthorDate: Sat Dec 27 18:06:32 2025 -0300
Commit:     James Almer <[email protected]>
CommitDate: Mon Dec 29 12:00:01 2025 -0300

    avformat/iamf_writer: fix writting some ambisonics fields in Audio Elements
    
    The fields are defined as 8 bit long unsigned ints. Fortunately, writing 
most sane values
    as leb is equivalent, which is why no tests are affected.
    
    Signed-off-by: James Almer <[email protected]>
---
 libavformat/iamf_writer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavformat/iamf_writer.c b/libavformat/iamf_writer.c
index b917a15978..44a32f0ce0 100644
--- a/libavformat/iamf_writer.c
+++ b/libavformat/iamf_writer.c
@@ -662,8 +662,8 @@ static int ambisonics_config(const IAMFAudioElement 
*audio_element,
     const AVIAMFLayer *layer = element->layers[0];
 
     ffio_write_leb(dyn_bc, 0); // ambisonics_mode
-    ffio_write_leb(dyn_bc, layer->ch_layout.nb_channels); // 
output_channel_count
-    ffio_write_leb(dyn_bc, audio_element->nb_substreams); // substream_count
+    avio_w8(dyn_bc, layer->ch_layout.nb_channels); // output_channel_count
+    avio_w8(dyn_bc, audio_element->nb_substreams); // substream_count
 
     if (layer->ch_layout.order == AV_CHANNEL_ORDER_AMBISONIC)
         for (int i = 0; i < layer->ch_layout.nb_channels; i++)

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