On Fri, 1 Aug 2014, Luca Barbato wrote:

And leverage the video index if the video is just disabled as wm4
did in an initial patch.
---
libavformat/flvdec.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 8e4cc5e..d74741d 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -57,6 +57,7 @@ typedef struct {
    } validate_index[2];
    int validate_next;
    int validate_count;
+    int has_video;
} FLVContext;

static int flv_probe(AVProbeData *p)
@@ -76,11 +77,14 @@ static int flv_probe(AVProbeData *p)

static AVStream *create_stream(AVFormatContext *s, int codec_type)
{
+    FLVContext *flv = s->priv_data;
    AVStream *st = avformat_new_stream(s, NULL);
    if (!st)
        return NULL;
    st->codec->codec_type = codec_type;
    avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
+    if (codec_type == AVMEDIA_TYPE_VIDEO)
+        flv->has_video = 1;
    return st;
}

@@ -818,6 +822,11 @@ skip:
            st = create_stream(s, is_audio ? AVMEDIA_TYPE_AUDIO
                                           : AVMEDIA_TYPE_VIDEO);
        av_dlog(s, "%d %X %d \n", is_audio, flags, st->discard);
+
+        if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY ||
+            !flv->has_video)
+            av_add_index_entry(st, pos, dts, size, 0, AVINDEX_KEYFRAME);
+
        if ((st->discard >= AVDISCARD_NONKEY &&
             !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || 
is_audio)) ||
            (st->discard >= AVDISCARD_BIDIR &&
@@ -826,8 +835,6 @@ skip:
            avio_seek(s->pb, next, SEEK_SET);
            continue;
        }
-        if ((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY)
-            av_add_index_entry(st, pos, dts, size, 0, AVINDEX_KEYFRAME);
        break;
    }

--
1.9.0

LGTM

// Martin
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