[FFmpeg-cvslog] avcodec/libx265: apply some global AVCodecContext settings to the encoder context
James Almer
git at videolan.org
Wed Jan 1 18:51:40 EET 2020
ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Tue Aug 13 22:07:08 2019 -0300| [3c22436ddf5995dd2be7f54c0301a737e22056c8] | committer: James Almer
avcodec/libx265: apply some global AVCodecContext settings to the encoder context
There's no reason to ignore them if set.
Signed-off-by: James Almer <jamrial at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3c22436ddf5995dd2be7f54c0301a737e22056c8
---
doc/encoders.texi | 14 ++++++++++++++
libavcodec/libx265.c | 41 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+)
diff --git a/doc/encoders.texi b/doc/encoders.texi
index a207363650..673eaf6496 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -2415,6 +2415,20 @@ during configuration. You need to explicitly configure the build with
@subsection Options
@table @option
+ at item b
+Sets target video bitrate.
+
+ at item bf
+
+ at item g
+Set the GOP size.
+
+ at item keyint_min
+Minimum GOP size.
+
+ at item refs
+Number of reference frames each P-frame can use. The range is from @var{1-16}.
+
@item preset
Set the x265 preset.
diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c
index 963c28fb1d..798ba12efa 100644
--- a/libavcodec/libx265.c
+++ b/libavcodec/libx265.c
@@ -82,10 +82,26 @@ static av_cold int libx265_encode_close(AVCodecContext *avctx)
return 0;
}
+static av_cold int libx265_param_parse_int(AVCodecContext *avctx,
+ const char *key, int value)
+{
+ libx265Context *ctx = avctx->priv_data;
+ char buf[256];
+
+ snprintf(buf, sizeof(buf), "%d", value);
+ if (ctx->api->param_parse(ctx->params, key, buf) == X265_PARAM_BAD_VALUE) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid value %d for param \"%s\".\n", value, key);
+ return AVERROR(EINVAL);
+ }
+
+ return 0;
+}
+
static av_cold int libx265_encode_init(AVCodecContext *avctx)
{
libx265Context *ctx = avctx->priv_data;
AVCPBProperties *cpb_props = NULL;
+ int ret;
ctx->api = x265_api_get(av_pix_fmt_desc_get(avctx->pix_fmt)->comp[0].depth);
if (!ctx->api)
@@ -241,6 +257,27 @@ static av_cold int libx265_encode_init(AVCodecContext *avctx)
if (!(avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER))
ctx->params->bRepeatHeaders = 1;
+ if (avctx->gop_size >= 0) {
+ ret = libx265_param_parse_int(avctx, "keyint", avctx->gop_size);
+ if (ret < 0)
+ return ret;
+ }
+ if (avctx->keyint_min > 0) {
+ ret = libx265_param_parse_int(avctx, "min-keyint", avctx->keyint_min);
+ if (ret < 0)
+ return ret;
+ }
+ if (avctx->max_b_frames >= 0) {
+ ret = libx265_param_parse_int(avctx, "bframes", avctx->max_b_frames);
+ if (ret < 0)
+ return ret;
+ }
+ if (avctx->refs >= 0) {
+ ret = libx265_param_parse_int(avctx, "ref", avctx->refs);
+ if (ret < 0)
+ return ret;
+ }
+
if (ctx->x265_opts) {
AVDictionary *dict = NULL;
AVDictionaryEntry *en = NULL;
@@ -556,6 +593,10 @@ static const AVClass class = {
static const AVCodecDefault x265_defaults[] = {
{ "b", "0" },
+ { "bf", "-1" },
+ { "g", "-1" },
+ { "keyint_min", "-1" },
+ { "refs", "-1" },
{ NULL },
};
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