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avcodec/libx265: add pass and x265-stats option

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Add support for standard -pass and -passlogfile options, matching the behavior
of libx264.
Add the -x265-stats option to specify the stats filename.
Update documentation.

Signed-off-by: Werner Robitza <werner.robitza@gmail.com>
This commit is contained in:
Werner Robitza
2025-12-18 12:47:17 +01:00
committed by Gyan Doshi
parent d244d438c3
commit d25d133df3
3 changed files with 29 additions and 0 deletions
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4
doc/encoders.texi
View File

@@ -3083,6 +3083,10 @@ Quantizer curve compression factor
Normally, when forcing a I-frame type, the encoder can select any type
of I-frame. This option forces it to choose an IDR-frame.
@item x265-stats
Specify the file name for 2-pass stats. This is set automatically when using
the @option{-passlogfile} option.
@item udu_sei @var{boolean}
Import user data unregistered SEI if available into output. Default is 0 (off).

5
fftools/ffmpeg_mux_init.c
View File

@@ -730,6 +730,11 @@ static int new_stream_video(Muxer *mux, const OptionsContext *o,
AV_OPT_SEARCH_CHILDREN) > 0)
av_opt_set(video_enc, "stats", logfilename,
AV_OPT_SEARCH_CHILDREN);
} else if (!strcmp(video_enc->codec->name, "libx265")) {
if (av_opt_is_set_to_default_by_name(video_enc, "x265-stats",
AV_OPT_SEARCH_CHILDREN) > 0)
av_opt_set(video_enc, "x265-stats", logfilename,
AV_OPT_SEARCH_CHILDREN);
} else {
if (video_enc->flags & AV_CODEC_FLAG_PASS2) {
char *logbuffer = read_file_to_string(logfilename);

20
libavcodec/libx265.c
View File

@@ -71,6 +71,7 @@ typedef struct libx265Context {
char *preset;
char *tune;
char *profile;
char *stats;
AVDictionary *x265_opts;
void *sei_data;
@@ -529,6 +530,24 @@ static av_cold int libx265_encode_init(AVCodecContext *avctx)
}
}
if (avctx->flags & AV_CODEC_FLAG_PASS1) {
if (ctx->api->param_parse(ctx->params, "pass", "1") == X265_PARAM_BAD_VALUE) {
av_log(avctx, AV_LOG_ERROR, "Invalid value for param \"pass\".\n");
return AVERROR(EINVAL);
}
} else if (avctx->flags & AV_CODEC_FLAG_PASS2) {
if (ctx->api->param_parse(ctx->params, "pass", "2") == X265_PARAM_BAD_VALUE) {
av_log(avctx, AV_LOG_ERROR, "Invalid value for param \"pass\".\n");
return AVERROR(EINVAL);
}
}
if (ctx->stats) {
if (ctx->api->param_parse(ctx->params, "stats", ctx->stats) == X265_PARAM_BAD_VALUE) {
av_log(avctx, AV_LOG_ERROR, "Invalid value \"%s\" for param \"stats\".\n", ctx->stats);
return AVERROR(EINVAL);
}
}
if (ctx->params->rc.vbvBufferSize && avctx->rc_initial_buffer_occupancy > 1000 &&
ctx->params->rc.vbvBufferInit == 0.9) {
ctx->params->rc.vbvBufferInit = (float)avctx->rc_initial_buffer_occupancy / 1000;
@@ -1009,6 +1028,7 @@ static const AVOption options[] = {
{ "preset", "set the x265 preset", OFFSET(preset), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
{ "tune", "set the x265 tune parameter", OFFSET(tune), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
{ "profile", "set the x265 profile", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
{ "x265-stats", "Filename for 2 pass stats", OFFSET(stats), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
{ "udu_sei", "Use user data unregistered SEI if available", OFFSET(udu_sei), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ "a53cc", "Use A53 Closed Captions (if available)", OFFSET(a53_cc), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ "x265-params", "set the x265 configuration using a :-separated list of key=value parameters", OFFSET(x265_opts), AV_OPT_TYPE_DICT, { 0 }, 0, 0, VE },