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avcodec/qtrleenc: Use keyframe when no previous frame is available 

If keeping a reference to an earlier frame failed, the next frame must
be an I frame for lack of reference frame. This commit implements this.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2021-03-26 12:42:21 +01:00 committed by Andreas Rheinhardt
parent 64977ed7ae
commit d5fc16a6a8
1 changed files with 2 additions and 1 deletions
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3
libavcodec/qtrleenc.c
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@ -369,7 +369,8 @@ static int qtrle_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
if ((ret = ff_alloc_packet2(avctx, pkt, s->max_buf_size, 0)) < 0)
return ret;
if (avctx->gop_size == 0 || (s->avctx->frame_number % avctx->gop_size) == 0) {
if (avctx->gop_size == 0 || !s->previous_frame->data[0] ||
(s->avctx->frame_number % avctx->gop_size) == 0) {
/* I-Frame */
s->key_frame = 1;
} else {