On 5/8/2021 9:29 AM, Jan Ekström wrote:
Libavcodec can now handle the standard AV1CodecConfigurationRecord
extradata as-is.
---
  libavformat/matroskadec.c | 4 ----
  1 file changed, 4 deletions(-)

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index 8523261760..73e1ddb68d 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -2720,10 +2720,6 @@ static int matroska_parse_tracks(AVFormatContext *s)
              /* we don't need any value stored in CodecPrivate.
                 make sure that it's not exported as extradata. */
              track->codec_priv.size = 0;
-        } else if (codec_id == AV_CODEC_ID_AV1 && track->codec_priv.size) {
-            /* For now, propagate only the OBUs, if any. Once libavcodec is
-               updated to handle isobmff style extradata this can be removed. 
*/
-            extradata_offset = 4;
          }
          track->codec_priv.size -= extradata_offset;

LGTM
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