Signed-off-by: James Almer
---
libavformat/ivfenc.c | 13 +++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/libavformat/ivfenc.c b/libavformat/ivfenc.c
index 45e5b238dc..0ce4a85171 100644
--- a/libavformat/ivfenc.c
+++ b/libavformat/ivfenc.c
@@ -26,10 +26,9 @@ typedef struct IVFEncContext {
uint64_t last_pts, sum_delta_pts;
} IVFEncContext;
-static int ivf_write_header(AVFormatContext *s)
+static int ivf_init(AVFormatContext *s)
{
AVCodecParameters *par;
-AVIOContext *pb = s->pb;
if (s->nb_streams != 1) {
av_log(s, AV_LOG_ERROR, "Format supports only exactly one video
stream\n");
@@ -43,6 +42,15 @@ static int ivf_write_header(AVFormatContext *s)
av_log(s, AV_LOG_ERROR, "Currently only VP8, VP9 and AV1 are
supported!\n");
return AVERROR(EINVAL);
}
+
+return 0;
+}
+
+static int ivf_write_header(AVFormatContext *s)
+{
+AVCodecParameters *par = s->streams[0]->codecpar;
+AVIOContext *pb = s->pb;
+
avio_write(pb, "DKIF", 4);
avio_wl16(pb, 0); // version
avio_wl16(pb, 32); // header length
@@ -119,6 +127,7 @@ AVOutputFormat ff_ivf_muxer = {
.extensions = "ivf",
.audio_codec = AV_CODEC_ID_NONE,
.video_codec = AV_CODEC_ID_VP8,
+.init = ivf_init,
.write_header = ivf_write_header,
.write_packet = ivf_write_packet,
.write_trailer = ivf_write_trailer,
--
2.26.2
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