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fftools/ffmpeg: fix for all forced key frames when 'copyts' is enabled

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Forced key frames generation functionality was assuming the first PTS
value as zero, but, when 'copyts' is enabled, the first PTS can be any
big number. This was eventually forcing all the frames as key frames.
To resolve this issue, update has been made to use first input pts as
reference pts.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Vishwanath Dixit
2018-05-06 22:38:59 +05:30
committed by Michael Niedermayer
parent f56a0b02cd
commit 146cdf7e4b
3 changed files with 7 additions and 1 deletions
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6
fftools/ffmpeg.c
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@@ -1236,8 +1236,12 @@ static void do_video_out(OutputFile *of,
in_picture->quality = enc->global_quality;
in_picture->pict_type = 0;
if (ost->forced_kf_ref_pts == AV_NOPTS_VALUE &&
in_picture->pts != AV_NOPTS_VALUE)
ost->forced_kf_ref_pts = in_picture->pts;
pts_time = in_picture->pts != AV_NOPTS_VALUE ?
in_picture->pts * av_q2d(enc->time_base) : NAN;
(in_picture->pts - ost->forced_kf_ref_pts) * av_q2d(enc->time_base) : NAN;
if (ost->forced_kf_index < ost->forced_kf_count &&
in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
ost->forced_kf_index++;

1
fftools/ffmpeg.h
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@@ -484,6 +484,7 @@ typedef struct OutputStream {
AVRational frame_aspect_ratio;
/* forced key frames */
int64_t forced_kf_ref_pts;
int64_t *forced_kf_pts;
int forced_kf_count;
int forced_kf_index;

1
fftools/ffmpeg_opt.c
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@@ -1324,6 +1324,7 @@ static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, e
ost->file_index = nb_output_files - 1;
ost->index = idx;
ost->st = st;
ost->forced_kf_ref_pts = AV_NOPTS_VALUE;
st->codecpar->codec_type = type;
ret = choose_encoder(o, oc, ost);