[FFmpeg-trac] #5890(undetermined:new): DVTel Camera G726 Audio
FFmpeg
trac at avcodec.org
Fri Oct 14 00:51:04 EEST 2016
#5890: DVTel Camera G726 Audio
-------------------------------------+-------------------------------------
Reporter: DJX | Type: defect
Status: new | Priority: minor
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
The G726 audio stream from my DVTel camera is not automatically decoded
properly by ffmpeg. Default output produces noise. Forcing the decoder:
"g726le" produces the desired audio.
Please see attached packet capture for more information.
How to reproduce:
{{{
ffmpeg -i rtsp://172.16.10.31/h264 C:\Temp\Test.mp4
ffmpeg version N-81972-g8063978 Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-
bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-
gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm
--enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-
libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
--enable-libopenjpeg --enable-libopus --enable-librtmp --enable-
libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex
--enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-
libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-
libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
libavutil 55. 32.100 / 55. 32.100
libavcodec 57. 61.102 / 57. 61.102
libavformat 57. 51.106 / 57. 51.106
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 63.100 / 6. 63.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 2.100 / 2. 2.100
libpostproc 54. 0.100 / 54. 0.100
Input #0, rtsp, from 'rtsp://172.16.10.31/h264':
Metadata:
title : Session streamed by "nessyMediaServer"
comment : h264
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264 (Main), yuvj420p(pc, bt709), 2560x1440 [SAR
1:1 DAR 16:9], 24 fps, 30 tbr, 90k tbn, 48 tbc
Stream #0:1: Audio: adpcm_g726, 8000 Hz, mono, s16, 40 kb/s
Stream #0:2: Data: none
No pixel format specified, yuvj420p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0000000003340780] using SAR=1/1
[libx264 @ 0000000003340780] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX
[libx264 @ 0000000003340780] profile High, level 5.0
[libx264 @ 0000000003340780] 264 - core 148 r2721 72d53ab - H.264/MPEG-4
AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html -
options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7
psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1
8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=18
lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[aac @ 0000000003461260] Too many bits 8832.000000 > 6144 per frame
requested, clamping to max
Output #0, mp4, to 'C:\Temp\Test.mp4':
Metadata:
title : Session streamed by "nessyMediaServer"
comment : h264
encoder : Lavf57.51.106
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021),
yuvj420p(pc), 2560x1440 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30
tbc
Metadata:
encoder : Lavc57.61.102 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 8000 Hz, mono,
fltp, 48 kb/s
Metadata:
encoder : Lavc57.61.102 aac
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (adpcm_g726 (g726) -> aac (native))
Press [q] to stop, [?] for help
Past duration 0.996986 too large
Past duration 0.996666 too large
Past duration 0.995995 too large
Past duration 0.995659 too large
[rtsp @ 0000000000f46300] max delay reached. need to consume packet
[rtsp @ 0000000000f46300] RTP: missed 45 packets
[h264 @ 000000000082f800] error while decoding MB 135 19, bytestream -5
[h264 @ 000000000082f800] concealing 11274 DC, 11274 AC, 11274 MV errors
in P frame
[rtsp @ 0000000000f46300] max delay reached. need to consume packet
0.3kbits/s dup=11 drop=4 speed=2.68x
[rtsp @ 0000000000f46300] RTP: missed 9 packets
[h264 @ 000000000082f340] error while decoding MB 145 60, bytestream -5
[h264 @ 000000000082f340] concealing 4704 DC, 4704 AC, 4704 MV errors in P
frame
[rtsp @ 0000000000f46300] max delay reached. need to consume
packet=2801.9kbits/s dup=24 drop=4 speed=1.36x
[rtsp @ 0000000000f46300] RTP: missed 67 packets
[h264 @ 000000000082ee60] error while decoding MB 44 72, bytestream -7
[h264 @ 000000000082ee60] concealing 2885 DC, 2885 AC, 2885 MV errors in P
frame
frame= 127 fps= 23 q=-1.0 Lsize= 4235kB time=00:00:05.00
bitrate=6926.3kbits/s dup=33 drop=4 speed=0.912x
video:4208kB audio:23kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.086667%
[libx264 @ 0000000003340780] frame I:1 Avg QP:17.71 size:255770
[libx264 @ 0000000003340780] frame P:44 Avg QP:20.31 size: 63998
[libx264 @ 0000000003340780] frame B:82 Avg QP:23.93 size: 15081
[libx264 @ 0000000003340780] consecutive B-frames: 11.0% 6.3% 7.1% 75.6%
[libx264 @ 0000000003340780] mb I I16..4: 20.0% 50.9% 29.1%
[libx264 @ 0000000003340780] mb P I16..4: 0.7% 2.0% 0.8% P16..4:
39.2% 8.1% 5.8% 0.0% 0.0% skip:43.5%
[libx264 @ 0000000003340780] mb B I16..4: 0.0% 0.0% 0.0% B16..8:
25.4% 1.5% 0.5% direct: 4.3% skip:68.2% L0:55.1% L1:43.5% BI: 1.4%
[libx264 @ 0000000003340780] 8x8 transform intra:55.5% inter:41.1%
[libx264 @ 0000000003340780] coded y,uvDC,uvAC intra: 76.5% 83.3% 41.8%
inter: 9.9% 25.7% 2.6%
[libx264 @ 0000000003340780] i16 v,h,dc,p: 37% 14% 33% 16%
[libx264 @ 0000000003340780] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 17% 26%
5% 5% 6% 6% 6% 6%
[libx264 @ 0000000003340780] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 19% 23%
6% 6% 6% 6% 5% 5%
[libx264 @ 0000000003340780] i8c dc,h,v,p: 59% 18% 18% 5%
[libx264 @ 0000000003340780] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000003340780] ref P L0: 70.0% 7.5% 15.5% 7.0%
[libx264 @ 0000000003340780] ref B L0: 93.9% 5.5% 0.6%
[libx264 @ 0000000003340780] ref B L1: 96.2% 3.8%
[libx264 @ 0000000003340780] kb/s:8141.69
[aac @ 0000000003461260] Qavg: 52130.945
Exiting normally, received signal 2.
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5890>
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