[FFmpeg-devel] [PATCH] avformat/utils: disabled debug code to collect format probing statistics

Michael Niedermayer michaelni at gmx.at
Sat Nov 9 20:08:55 CET 2013

This allows collecting statistics on probing scores and the amount of data
probing needed for various files and formats.
For example it can be used to find out which formats tend to need more
data for probing or which files are probed with less certain/lower scores

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
 libavformat/utils.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index 5637d17..cc219f2 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -399,6 +399,11 @@ int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
                 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
                 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
+#if 0
+            FILE *f= fopen("probestat.tmp", "ab");
+            fprintf(f, "%d, bytes format: %s, filename: %s, score: %d\n", probe_size, (*fmt)->name, filename, score);
+            fclose(f);

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