This ensures that an encoder is able to cope with input frames with changing
resolution only if it declares the capability of
AV_CODEC_CAP_VARIABLE_DIMENSIONS.
Signed-off-by: Linjie Fu <linjie...@intel.com>
---
fftools/ffmpeg.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index e5fbd47..5c4cf03 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -1068,6 +1068,15 @@ static void do_video_out(OutputFile *of,
InputStream *ist = NULL;
AVFilterContext *filter = ost->filter->filter;
+ if (next_picture && (enc->width != next_picture->width ||
+ enc->height != next_picture->height)) {
+ if (!(enc->codec->capabilities & AV_CODEC_CAP_VARIABLE_DIMENSIONS)) {
+ av_log(NULL, AV_LOG_ERROR, "Variable dimension encoding "
+ "is not supported by %s.\n", enc->codec->name);
+ goto error;
+ }
+ }
+
if (ost->source_index >= 0)
ist = input_streams[ost->source_index];
--
2.7.4
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