[FFmpeg-devel] [PATCH] avformat/mpegenc: increase the default size of the VBV buffer
    Jack Lau 
    jacklau1222 at qq.com
       
    Sun Feb  9 04:09:56 EET 2025
    
    
  
Increase the default buffer size to match more modern encoding scenarios.
---
 libavformat/mpegenc.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c
index 6b6763c30f..2b3b98b894 100644
--- a/libavformat/mpegenc.c
+++ b/libavformat/mpegenc.c
@@ -446,11 +446,10 @@ static av_cold int mpeg_mux_init(AVFormatContext *ctx)
                 stream->max_buffer_size = 6 * 1024 + props->buffer_size / 8;
             else {
                 av_log(ctx, AV_LOG_WARNING,
-                       "VBV buffer size not set, using default size of 230KB\n"
+                       "VBV buffer size not set, using default size of 2048KB\n"
                        "If you want the mpeg file to be compliant to some specification\n"
                        "Like DVD, VCD or others, make sure you set the correct buffer size\n");
-                // FIXME: this is probably too small as default
-                stream->max_buffer_size = 230 * 1024;
+                stream->max_buffer_size = 2048 * 1024;
             }
             if (stream->max_buffer_size > 1024 * 8191) {
                 av_log(ctx, AV_LOG_WARNING, "buffer size %d, too large\n", stream->max_buffer_size);
-- 
2.48.1
    
    
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