static int video_discard = 0;
static unsigned int video_codec_tag = 0;
static char *video_language = NULL;
-static int same_quality = 0;
+static int same_quant = 0;
static int do_deinterlace = 0;
static int top_field_first = -1;
static int me_threshold = 0;
big_picture.top_field_first = top_field_first;
}
- /* handles sameq here. This is not correct because it may
+ /* handles same_quant here. This is not correct because it may
not be a global option */
big_picture.quality = quality;
if(!me_threshold)
ret = avcodec_decode_video2(ist->st->codec,
&picture, &got_output, &avpkt);
- quality = same_quality ? picture.quality : 0;
+ quality = same_quant ? picture.quality : 0;
if (ret < 0)
return ret;
if (!got_output) {
ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
#endif
do_video_out(os, ost, ist, &picture, &frame_size,
- same_quality ? quality : ost->st->codec->global_quality);
+ same_quant ? quality : ost->st->codec->global_quality);
if (vstats_filename && frame_size)
do_video_stats(os, ost, frame_size);
break;
if (intra_only)
video_enc->gop_size = 0;
- if (video_qscale || same_quality) {
+ if (video_qscale || same_quant) {
video_enc->flags |= CODEC_FLAG_QSCALE;
video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
}
{ "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_override_string}, "rate control override for specific intervals", "override" },
{ "vcodec", HAS_ARG | OPT_VIDEO, {(void*)opt_video_codec}, "force video codec ('copy' to copy stream)", "codec" },
{ "me_threshold", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_me_threshold}, "motion estimaton threshold", "threshold" },
- { "sameq", OPT_BOOL | OPT_VIDEO, {(void*)&same_quality},
+ { "same_quant", OPT_BOOL | OPT_VIDEO, {(void*)&same_quant},
"use same quantizer as source (implies VBR)" },
{ "pass", HAS_ARG | OPT_VIDEO, {(void*)opt_pass}, "select the pass number (1 or 2)", "n" },
{ "passlogfile", HAS_ARG | OPT_STRING | OPT_VIDEO, {(void*)&pass_logfilename_prefix}, "select two pass log file name prefix", "prefix" },
Set video buffer verifier buffer size (in bits).
@item -vcodec @var{codec}
Set the video codec. This is an alias for @code{-codec:v}.
-@item -sameq
+@item -same_quant
Use same quantizer as source (implies VBR).
+Note that this is NOT SAME QUALITY. Do not use this option unless you know you
+need it.
+
@item -pass @var{n}
Select the pass number (1 or 2). It is used to do two-pass
video encoding. The statistics of the video are recorded in the first
'-qscale n' when 'n' is between 1 (excellent quality) and 31 (worst
quality).
-@item
-When converting video files, you can use the '-sameq' option which
-uses the same quality factor in the encoder as in the decoder.
-It allows almost lossless encoding.
-
@end itemize
@c man end TIPS