ffmpeg | branch: master | Lou Logan <l...@lrcd.com> | Mon Jan 14 15:14:48 2019 
-0900| [d92f06eb6663dce8cb8942a1314f736a07f255e0] | committer: Lou Logan

avformat/img2enc: mention -frames:v in error message

Signed-off-by: Lou Logan <l...@lrcd.com>
Signed-off-by: Kieran O Leary <kieran.o.le...@gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d92f06eb6663dce8cb8942a1314f736a07f255e0
---

 libavformat/img2enc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/img2enc.c b/libavformat/img2enc.c
index a09cc8ec50..bec4bf81dd 100644
--- a/libavformat/img2enc.c
+++ b/libavformat/img2enc.c
@@ -110,7 +110,8 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
                                           AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 
0 &&
                    img->img_number > 1) {
             av_log(s, AV_LOG_ERROR,
-                   "Could not get frame filename number %d from pattern '%s' 
(either set update or use a pattern like %%03d within the filename pattern)\n",
+                   "Could not get frame filename number %d from pattern '%s'. "
+                   "Use '-frames:v 1' for a single image, or '-update' option, 
or use a pattern such as %%03d within the filename.\n",
                    img->img_number, img->path);
             return AVERROR(EINVAL);
         }

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