FFmpeg doesn't support tv-range RGB pixel data, so if we see a cICP chunk that marks its RGB data as tv-range, we should print a warning instead of setting it to AVCOL_RANGE_MPEG and having things possibly mess up later down the line.
Signed-off-by: Leo Izen <leo.i...@gmail.com> --- libavcodec/pngdec.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c index 0d969decf2..384ae97177 100644 --- a/libavcodec/pngdec.c +++ b/libavcodec/pngdec.c @@ -1511,8 +1511,10 @@ static int output_frame(PNGDecContext *s, AVFrame *f) av_log(avctx, AV_LOG_WARNING, "unrecognized cICP transfer\n"); else avctx->color_trc = f->color_trc = s->cicp_trc; - avctx->color_range = f->color_range = - s->cicp_range == 0 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; + /* we don't support tv-range RGB */ + avctx->color_range = f->color_range = AVCOL_RANGE_JPEG; + if (s->cicp_range == 0) + av_log(avctx, AV_LOG_WARNING, "unsupported tv-range cICP chunk\n"); } else if (s->iccp_data) { AVFrameSideData *sd = av_frame_new_side_data(f, AV_FRAME_DATA_ICC_PROFILE, s->iccp_data_len); if (!sd) { -- 2.39.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".