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| author | Jun Zhao <barryjzhao@tencent.com> | 2020-05-17 12:10:05 +0800 |
|---|---|---|
| committer | Jun Zhao <barryjzhao@tencent.com> | 2020-06-26 09:53:36 +0800 |
| commit | 60d79b1df9d4c6030010ccb0c134ede9e33158c2 (patch) | |
| tree | eca70df320e7b35240d68f1eed3a8f148a730203 /libavcodec/aac_ac3_parser.h | |
| parent | a8fb7612a97530bdd0b2549dacf91dcf71a3187a (diff) | |
| download | ffmpeg-60d79b1df9d4c6030010ccb0c134ede9e33158c2.tar.gz | |
lavc/aac_ac3_parser: improve the raw AAC file bit rate calculation
Now we just use one ADTS raw frame to calculate the bit rate, it's
lead to a larger error when get the duration from bit rate, the
improvement cumulate Nth ADTS frames to get the average bit rate.
e,g used the command get the duration like:
ffprobe -show_entries format=duration -i fate-suite/aac/foo.aac
before this improvement dump the duration=2.173935
after this improvement dump the duration=1.979267
in fact, the real duration can be get by command like:
ffmpeg -i fate-suite/aac/foo.aac -f null /dev/null with time=00:00:01.97
Also update the fate-adtstoasc_ticket3715.
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
Diffstat (limited to 'libavcodec/aac_ac3_parser.h')
| -rw-r--r-- | libavcodec/aac_ac3_parser.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/aac_ac3_parser.h b/libavcodec/aac_ac3_parser.h index c2506a5bfd..b04041f69d 100644 --- a/libavcodec/aac_ac3_parser.h +++ b/libavcodec/aac_ac3_parser.h @@ -55,6 +55,8 @@ typedef struct AACAC3ParseContext { uint64_t state; int need_next_header; + int frame_number; + int last_bit_rate; enum AVCodecID codec_id; } AACAC3ParseContext; |