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--- a/src/decoder/plugins/FfmpegDecoderPlugin.cxx
+++ b/src/decoder/plugins/FfmpegDecoderPlugin.cxx
@@ -467,6 +467,13 @@ ffmpeg_probe(Decoder *decoder, InputStre
unsigned char buffer[BUFFER_SIZE];
size_t nbytes = decoder_read(decoder, is, buffer, BUFFER_SIZE);
+
+ if ((nbytes > 0) && (nbytes < 1024))
+ {
+ // Gobble some more data if header is small
+ nbytes += decoder_read(decoder, is, buffer + nbytes, BUFFER_SIZE - nbytes);
+ }
+
if (nbytes <= PADDING || !is.LockRewind(IgnoreError()))
return nullptr;
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