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avcodec/ffv1enc: Check that the crc + version combination is supported 

The crc flag is only stored since version 3 thus before this crcs do not
work. We increase the version as needed same as we do with pix_fmts

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-04-21 22:19:31 +02:00
parent 8132d362fa
commit d9706f79c1
1 changed files with 4 additions and 0 deletions
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4
libavcodec/ffv1enc.c
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@ -539,6 +539,10 @@ static av_cold int encode_init(AVCodecContext *avctx)
s->ec = (s->version >= 3);
}
// CRC requires version 3+
if (s->ec)
s->version = FFMAX(s->version, 3);
if ((s->version == 2 || s->version>3) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
av_log(avctx, AV_LOG_ERROR, "Version 2 needed for requested features but version 2 is experimental and not enabled\n");
return AVERROR_INVALIDDATA;