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ffmpeg: fix -aspect cli option

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Redesign the way -aspect option is handled. This is done by making
ffmpeg read the sample aspect ratio set in the corresponding input
stream by default, and overriding it using the value specified by
-aspect.

If the output display aspect ratio is specified with -aspect, it is
set at the end of the filterchain, thus overriding the value set by
filters in the filterchain.

This implementation is more robust, since does not modify the
filterchain description (which was creating potential syntax errors).

(Cherry-pick abf8342aa9)

Another aspect ratio fix try. This leaves the setdar addition at the end
(preferred by people).

(Cherry-pick e7c7b0d000)
This commit is contained in:
Baptiste Coudurier 2011-04-01 17:30:45 +02:00 committed by Alex Converse
parent 9d5fa6182d
commit 901ff51116
1 changed files with 14 additions and 15 deletions
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29
ffmpeg.c
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@ -274,6 +274,8 @@ typedef struct AVOutputStream {
int resample_width;
int resample_pix_fmt;
float frame_aspect_ratio;
/* forced key frames */
int64_t *forced_kf_pts;
int forced_kf_count;
@ -411,6 +413,8 @@ static int configure_video_filters(AVInputStream *ist, AVOutputStream *ost)
codec->width = ost->output_video_filter->inputs[0]->w;
codec->height = ost->output_video_filter->inputs[0]->h;
codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
ost->frame_aspect_ratio ? // overriden by the -aspect cli option
av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
ost->output_video_filter->inputs[0]->sample_aspect_ratio;
return 0;
@ -1623,7 +1627,7 @@ static int output_packet(AVInputStream *ist, int ist_index,
break;
case AVMEDIA_TYPE_VIDEO:
#if CONFIG_AVFILTER
if (ost->picref->video)
if (ost->picref->video && !ost->frame_aspect_ratio)
ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
#endif
do_video_out(os, ost, ist, &picture, &frame_size);
@ -2132,6 +2136,13 @@ static int transcode(AVFormatContext **output_files,
codec->width = icodec->width;
codec->height = icodec->height;
codec->has_b_frames = icodec->has_b_frames;
if (!codec->sample_aspect_ratio.num) {
codec->sample_aspect_ratio =
ost->st->sample_aspect_ratio =
ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
ist->st->codec->sample_aspect_ratio.num ?
ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
}
break;
case AVMEDIA_TYPE_SUBTITLE:
codec->width = icodec->width;
@ -3220,11 +3231,6 @@ static void opt_input_file(const char *filename)
set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
frame_height = dec->height;
frame_width = dec->width;
if(ic->streams[i]->sample_aspect_ratio.num)
frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
else
frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
frame_aspect_ratio *= (float) dec->width / dec->height;
frame_pix_fmt = dec->pix_fmt;
rfps = ic->streams[i]->r_frame_rate.num;
rfps_base = ic->streams[i]->r_frame_rate.den;
@ -3337,7 +3343,6 @@ static void new_video_stream(AVFormatContext *oc, int file_idx)
AVCodecContext *video_enc;
enum CodecID codec_id = CODEC_ID_NONE;
AVCodec *codec= NULL;
int i;
st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
if (!st) {
@ -3358,14 +3363,9 @@ static void new_video_stream(AVFormatContext *oc, int file_idx)
codec = avcodec_find_encoder(codec_id);
}
ost->frame_aspect_ratio = frame_aspect_ratio;
frame_aspect_ratio = 0;
#if CONFIG_AVFILTER
if (frame_aspect_ratio > 0){
i = vfilters ? strlen(vfilters) : 0;
vfilters = av_realloc(vfilters, i+100);
snprintf(vfilters+i, i+100, "%csetdar=%f\n", i?',':' ', frame_aspect_ratio);
frame_aspect_ratio=0;
}
ost->avfilter= vfilters;
vfilters = NULL;
#endif
@ -3412,7 +3412,6 @@ static void new_video_stream(AVFormatContext *oc, int file_idx)
video_enc->width = frame_width;
video_enc->height = frame_height;
video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
video_enc->pix_fmt = frame_pix_fmt;
st->sample_aspect_ratio = video_enc->sample_aspect_ratio;