According to spec, libvpx should support dynamic resolution changes.
Add dynamic resolution encoding support in libvpx.
Format change should also be supported, but I didn't test it so just
leave it open.
cmdline:
ffmpeg -noautoscale -y -i ./reinit-large_420_8-to-small_420_8.h264
-pix_fmt yuv420p -c:v libvpx-vp9 lena.ivf
Signed-off-by: Linjie Fu <linjie...@intel.com>
---
libavcodec/libvpxenc.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c
index feb52ea..6af6c50 100644
--- a/libavcodec/libvpxenc.c
+++ b/libavcodec/libvpxenc.c
@@ -1067,6 +1067,15 @@ static int vpx_encode(AVCodecContext *avctx, AVPacket
*pkt,
int res, coded_size;
vpx_enc_frame_flags_t flags = 0;
+ if (frame && (avctx->width != frame->width ||
+ avctx->height != frame->height)) {
+ avctx->width = frame->width;
+ avctx->height = frame->height;
+
+ avctx->codec->close(avctx);
+ avctx->codec->init(avctx);
+ }
+
if (frame) {
rawimg = &ctx->rawimg;
rawimg->planes[VPX_PLANE_Y] = frame->data[0];
@@ -1295,7 +1304,7 @@ AVCodec ff_libvpx_vp8_encoder = {
.init = vp8_init,
.encode2 = vpx_encode,
.close = vpx_free,
- .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
+ .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS |
AV_CODEC_CAP_VARIABLE_DIMENSIONS,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE },
.priv_class = &class_vp8,
.defaults = defaults,
@@ -1325,7 +1334,7 @@ AVCodec ff_libvpx_vp9_encoder = {
.init = vp9_init,
.encode2 = vpx_encode,
.close = vpx_free,
- .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
+ .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS |
AV_CODEC_CAP_VARIABLE_DIMENSIONS,
.profiles = NULL_IF_CONFIG_SMALL(ff_vp9_profiles),
.priv_class = &class_vp9,
.defaults = defaults,
--
2.7.4
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