[FFmpeg-devel] [PATCH]Always accept concatenating a stream without SAR with a stream with SAR defined

[Carl Eugen Hoyos]

On Wednesday 17 July 2013 10:39:49 am Nicolas George wrote:
> Le nonidi 29 messidor, an CCXXI, Carl Eugen Hoyos a écrit :
> > I agree that the original patch does not look very nice but I am not sure
> > how to improve.
>
> Of course, I should have thought that the parens would ruin the alignment
> :(

Third possibility attached that I slightly prefer.

Thank you, Carl Eugen
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diff --git a/libavfilter/avf_concat.c b/libavfilter/avf_concat.c
index 4534102..a69c9cb 100644
--- a/libavfilter/avf_concat.c
+++ b/libavfilter/avf_concat.c
@@ -134,10 +134,13 @@ static int config_output(AVFilterLink *outlink)
     outlink->format              = inlink->format;
     for (seg = 1; seg < cat->nb_segments; seg++) {
         inlink = ctx->inputs[in_no += ctx->nb_outputs];
+        if (!outlink->sample_aspect_ratio.num)
+            outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
         /* possible enhancement: unsafe mode, do not check */
         if (outlink->w                       != inlink->w                       ||
             outlink->h                       != inlink->h                       ||
-            outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
+            outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num &&
+                                                inlink->sample_aspect_ratio.num ||
             outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
             av_log(ctx, AV_LOG_ERROR, "Input link %s parameters "
                    "(size %dx%d, SAR %d:%d) do not match the corresponding "