ffmpeg: add abort_on option to allow aborting on empty output

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Marton Balint <cus@passwd.hu>

1 files changed, 7 insertions, 0 deletions

diff --git a/ffmpeg.c b/ffmpeg.c
index 5e9a12741e..a19c81667b 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -4054,6 +4054,7 @@ static int transcode(void)
     OutputStream *ost;
     InputStream *ist;
     int64_t timer_start;
+    int64_t total_packets_written = 0;
 
     ret = transcode_init();
     if (ret < 0)
@@ -4134,6 +4135,12 @@ static int transcode(void)
         if (ost->encoding_needed) {
             av_freep(&ost->enc_ctx->stats_in);
         }
+        total_packets_written += ost->packets_written;
+    }
+
+    if (!total_packets_written && (abort_on_flags & ABORT_ON_FLAG_EMPTY_OUTPUT)) {
+        av_log(NULL, AV_LOG_FATAL, "Empty output\n");
+        exit_program(1);
     }
 
     /* close each decoder */