[libav-commits] libfdk-aac: Warn the user that the VBR modes are unsupported

Martin Storsjö git at libav.org
Tue Sep 25 19:52:10 CEST 2012

Module: libav
Branch: master
Commit: a10190dcd8e4f357119676510bd182699b61cf36

Author:    Martin Storsjö <martin at martin.st>
Committer: Martin Storsjö <martin at martin.st>
Date:      Tue Sep 25 08:31:44 2012 +0300

libfdk-aac: Warn the user that the VBR modes are unsupported

These modes were not originally exposed by the library at all.
In practice, only a few of them work for each sample rate/profile
combination, and they don't work at all for the more uncommon
sample rates.

Signed-off-by: Martin Storsjö <martin at martin.st>


 libavcodec/libfdk-aacenc.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/libavcodec/libfdk-aacenc.c b/libavcodec/libfdk-aacenc.c
index 289c7ac..362a17c 100644
--- a/libavcodec/libfdk-aacenc.c
+++ b/libavcodec/libfdk-aacenc.c
@@ -180,6 +180,9 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
                    "VBR quality %d out of range, should be 1-5\n", mode);
             mode = av_clip(mode, 1, 5);
+        av_log(avctx, AV_LOG_WARNING,
+               "Note, the VBR setting is unsupported and only works with "
+               "some parameter combinations\n");
         if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATEMODE,
                                        mode)) != AACENC_OK) {
             av_log(avctx, AV_LOG_ERROR, "Unable to set the VBR bitrate mode %d: %s\n",

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