On 3/4/2021 12:42 PM, Andreas Rheinhardt wrote:
AVCodecInternal.last_pkt_props is not used when decoding subtitles;
ergo it makes no sense to set it at all.

Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com>
---
  libavcodec/decode.c | 5 -----
  1 file changed, 5 deletions(-)

diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index 84c4039836..04cb050dc7 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -1050,10 +1050,6 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, 
AVSubtitle *sub,
          if (ret < 0)
              return ret;
- ret = extract_packet_props(avctx->internal, pkt);
-        if (ret < 0)
-            goto cleanup;
-
              if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
                  sub->pts = av_rescale_q(avpkt->pts,
                                          avctx->pkt_timebase, AV_TIME_BASE_Q);
@@ -1099,7 +1095,6 @@ int avcodec_decode_subtitle2(AVCodecContext *avctx, 
AVSubtitle *sub,
          if (*got_sub_ptr)
              avctx->frame_number++;
- cleanup:
          if (pkt == avci->buffer_pkt) // did we recode?
              av_packet_unref(avci->buffer_pkt);
      }

LGTM
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