Merge remote-tracking branch 'cigaes/master'

* cigaes/master:
  ffmpeg: make -aspect work with -vcodec copy.
  lavfi/vf_aspect: improve compatibility of parsing.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

doc/ffmpeg.texi

@@ -468,6 +468,10 @@ form @var{num}:@var{den}, where @var{num} and @var{den} are the
 numerator and denominator of the aspect ratio. For example "4:3",
 "16:9", "1.3333", and "1.7777" are valid argument values.
 
+If used together with @option{-vcodec copy}, it will affect the aspect ratio
+stored at container level, but not the aspect ratio stored in encoded
+frames, if it exists.
+
 @item -vn (@emph{output})
 Disable video recording.
 

ffmpeg.c

@@ -2224,7 +2224,14 @@ static int transcode_init(void)
                 codec->width              = icodec->width;
                 codec->height             = icodec->height;
                 codec->has_b_frames       = icodec->has_b_frames;
-                if (!codec->sample_aspect_ratio.num) {
+                if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
+                    codec->sample_aspect_ratio   =
+                    ost->st->sample_aspect_ratio =
+                        av_mul_q(ost->frame_aspect_ratio,
+                                 (AVRational){ codec->height, codec->width });
+                    av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
+                           "with stream copy may produce invalid files\n");
+                } else 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 :

ffmpeg_opt.c

@@ -1168,7 +1168,7 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc, in
     AVStream *st;
     OutputStream *ost;
     AVCodecContext *video_enc;
-    char *frame_rate = NULL;
+    char *frame_rate = NULL, *frame_aspect_ratio = NULL;
 
     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO, source_index);
     st  = ost->st;
@@ -1180,10 +1180,21 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc, in
         exit(1);
     }
 
+    MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
+    if (frame_aspect_ratio) {
+        AVRational q;
+        if (av_parse_ratio(&q, frame_aspect_ratio, 255, 0, NULL) < 0 ||
+            q.num <= 0 || q.den <= 0) {
+            av_log(NULL, AV_LOG_FATAL, "Invalid aspect ratio: %s\n", frame_aspect_ratio);
+            exit(1);
+        }
+        ost->frame_aspect_ratio = q;
+    }
+
     if (!ost->stream_copy) {
         const char *p = NULL;
         char *frame_size = NULL;
-        char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
+        char *frame_pix_fmt = NULL;
         char *intra_matrix = NULL, *inter_matrix = NULL;
         int do_pass = 0;
         int i;
@@ -1194,17 +1205,6 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc, in
             exit(1);
         }
 
-        MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
-        if (frame_aspect_ratio) {
-            AVRational q;
-            if (av_parse_ratio(&q, frame_aspect_ratio, 255, 0, NULL) < 0 ||
-                q.num <= 0 || q.den <= 0) {
-                av_log(NULL, AV_LOG_FATAL, "Invalid aspect ratio: %s\n", frame_aspect_ratio);
-                exit(1);
-            }
-            ost->frame_aspect_ratio = q;
-        }
-
         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
         if (frame_pix_fmt && *frame_pix_fmt == '+') {

libavfilter/vf_aspect.c

@@ -26,7 +26,7 @@
 #include <float.h>
 
 #include "libavutil/common.h"
-#include "libavutil/opt.h"
+#include "libavutil/eval.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/opt.h"
 #include "libavutil/parseutils.h"
@@ -40,7 +40,7 @@ typedef struct {
     AVRational aspect;
     int max;
 #if FF_API_OLD_FILTER_OPTS
-    float aspect_num, aspect_den;
+    float aspect_den;
 #endif
     char *ratio_str;
 } AspectContext;
@@ -51,10 +51,17 @@ static av_cold int init(AVFilterContext *ctx)
     int ret;
 
 #if FF_API_OLD_FILTER_OPTS
-    if (s->aspect_num > 0 && s->aspect_den > 0) {
+    if (s->ratio_str && s->aspect_den > 0) {
+        double num;
         av_log(ctx, AV_LOG_WARNING,
                "num:den syntax is deprecated, please use num/den or named options instead\n");
-        s->aspect = av_d2q(s->aspect_num / s->aspect_den, s->max);
+        ret = av_expr_parse_and_eval(&num, s->ratio_str, NULL, NULL,
+                                     NULL, NULL, NULL, NULL, NULL, 0, ctx);
+        if (ret < 0) {
+            av_log(ctx, AV_LOG_ERROR, "Unable to parse ratio numerator \"%s\"\n", s->ratio_str);
+            return AVERROR(EINVAL);
+        }
+        s->aspect = av_d2q(num / s->aspect_den, s->max);
     } else
 #endif
     if (s->ratio_str) {
@@ -115,13 +122,12 @@ static int setdar_config_props(AVFilterLink *inlink)
 }
 
 static const AVOption setdar_options[] = {
-#if FF_API_OLD_FILTER_OPTS
-    { "dar_num", NULL, OFFSET(aspect_num), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
-    { "dar_den", NULL, OFFSET(aspect_den), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
-#endif
     { "dar",   "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
     { "ratio", "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
     { "r",     "set display aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
+#if FF_API_OLD_FILTER_OPTS
+    { "dar_den", NULL, OFFSET(aspect_den), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
+#endif
     { "max",   "set max value for nominator or denominator in the ratio", OFFSET(max), AV_OPT_TYPE_INT, {.i64=100}, 1, INT_MAX, FLAGS },
     { NULL }
 };
@@ -181,13 +187,12 @@ static int setsar_config_props(AVFilterLink *inlink)
 }
 
 static const AVOption setsar_options[] = {
-#if FF_API_OLD_FILTER_OPTS
-    { "sar_num", NULL, OFFSET(aspect_num), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
-    { "sar_den", NULL, OFFSET(aspect_den), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
-#endif
     { "sar",   "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
     { "ratio", "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
     { "r",     "set sample (pixel) aspect ratio", OFFSET(ratio_str), AV_OPT_TYPE_STRING, {.str="0"}, .flags=FLAGS },
+#if FF_API_OLD_FILTER_OPTS
+    { "sar_den", NULL, OFFSET(aspect_den), AV_OPT_TYPE_FLOAT, { .dbl = 0 }, 0, FLT_MAX, FLAGS },
+#endif
     { "max",   "set max value for nominator or denominator in the ratio", OFFSET(max), AV_OPT_TYPE_INT, {.i64=100}, 1, INT_MAX, FLAGS },
     { NULL }
 };