Opened 10 years ago

Last modified 10 years ago

#5820 new defect

WMA Lossless 24-bit Distortions via RTSP

Reported by: Dennis Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: udp rtsp
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:
When trans-coding an RTSP stream with WMA Lossless 24-bit audio to a WAV file, ffmpeg produces many audible artifacts. Stream is publicly available for testing: rtsp://djxmmx.net/rap-rnb. Please see next post for links to the output files produced by ffmpeg.
How to reproduce:

ffmpeg -i rtsp://djxmmx.net/rap-rnb C:\Temp\Out-RTSP.wav
ffmpeg version N-81516-gbe07c25 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 --ena
ble-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --ena
ble-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --e
nable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
openh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-lib
soxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvo
rbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-li
bxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  libavutil      55. 29.100 / 55. 29.100
  libavcodec     57. 54.101 / 57. 54.101
  libavformat    57. 48.101 / 57. 48.101
  libavdevice    57.  0.102 / 57.  0.102
  libavfilter     6. 58.100 /  6. 58.100
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
[wmalossless @ 00000000003fe4e0] Decoding audio at 24 bit-depth
Input #0, rtsp, from 'rtsp://djxmmx.net/rap-rnb':
  Metadata:
    MediaFoundationVersion: 2.112
    DeviceConformanceTemplate: N2
    WM/WMADRCPeakReference: 32767
    WM/WMADRCPeakTarget: 32767
    WM/WMADRCAverageReference: 10194
    WM/WMADRCAverageTarget: 10194
    genre           : R&B
    WMFSDKVersion   : 11.0.5721.5145
    WMFSDKNeeded    : 0.0.0.0000
    album           : Thr33 Ringz
    track           : 11
    WM/Track        : 10
    WM/Year         : 2008
    PeakValue       : 32673
    AverageLevel    : 7035
    IsVBR           : 1
    title           : Long Lap Dance
    artist          : T-Pain
  Duration: 00:04:36.47, start: 199.296000, bitrate: N/A
    Stream #0:0: Audio: wmalossless (c[1][0][0] / 0x0163), 96000 Hz, stereo, s32p (24 bit), 1152 kb/s
[wmalossless @ 0000000002d04120] Decoding audio at 24 bit-depth
[wav @ 0000000002d045c0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar in
stead.
Output #0, wav, to 'C:\Temp\Out-RTSP.wav':
  Metadata:
    MediaFoundationVersion: 2.112
    DeviceConformanceTemplate: N2
    WM/WMADRCPeakReference: 32767
    WM/WMADRCPeakTarget: 32767
    WM/WMADRCAverageReference: 10194
    WM/WMADRCAverageTarget: 10194
    IGNR            : R&B
    WMFSDKVersion   : 11.0.5721.5145
    WMFSDKNeeded    : 0.0.0.0000
    IPRD            : Thr33 Ringz
    IPRT            : 11
    WM/Track        : 10
    WM/Year         : 2008
    PeakValue       : 32673
    AverageLevel    : 7035
    IsVBR           : 1
    INAM            : Long Lap Dance
    IART            : T-Pain
    ISFT            : Lavf57.48.101
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 96000 Hz, stereo, s16, 3072 kb/s
    Metadata:
      encoder         : Lavc57.54.101 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (wmalossless (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[rtsp @ 000000000030a920] max delay reached. need to consume packet
[rtsp @ 000000000030a920] RTP: missed 141 packets
[wmalossless @ 0000000002d04120] broken frame: channel len(6656) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] broken frame: channel len(4352) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] broken frame: channel len(4608) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] broken frame: channel len(7680) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] broken frame: channel len(5632) > samples_per_frame(4096)
[wmalossless @ 0000000002d04120] broken frame: channel len(4864) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] broken frame: channel len(4352) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] Order[0][1] 608 > max (256), not supported
[rtsp @ 000000000030a920] max delay reached. need to consume packet
[rtsp @ 000000000030a920] RTP: missed 15 packets
[wmalossless @ 0000000002d04120] Packet loss detected! seq 3 vs 6
[wmalossless @ 0000000002d04120] broken frame: channel len(5120) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] Arithmetic coding is not implemented. Update your FFmpeg version to the newest one from
 Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
[wmalossless @ 0000000002d04120] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/
and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] broken frame: channel len(4352) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] broken frame: channel len(4352) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] Order[0][0] 776 > max (256), not supported
Error while decoding stream #0:0: Invalid data found when processing input
[rtsp @ 000000000030a920] max delay reached. need to consume packet
[rtsp @ 000000000030a920] RTP: missed 6 packets
[wmalossless @ 0000000002d04120] Packet loss detected! seq 6 vs 8
[wmalossless @ 0000000002d04120] broken frame: channel len(4608) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] broken frame: channel len(6912) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[rtsp @ 000000000030a920] max delay reached. need to consume packet
[rtsp @ 000000000030a920] RTP: missed 24 packets
[wmalossless @ 0000000002d04120] Packet loss detected! seq 2 vs 6
[rtsp @ 000000000030a920] max delay reached. need to consume packet
[rtsp @ 000000000030a920] RTP: missed 6 packets
[wmalossless @ 0000000002d04120] Packet loss detected! seq c vs e
[rtsp @ 000000000030a920] max delay reached. need to consume packet
[rtsp @ 000000000030a920] RTP: missed 24 packets
[wmalossless @ 0000000002d04120] Packet loss detected! seq 4 vs 8
[rtsp @ 000000000030a920] RTP: missed 9 packets
[wmalossless @ 0000000002d04120] Packet loss detected! seq 8 vs a
[wmalossless @ 0000000002d04120] broken frame: channel len(4608) > samples_per_frame(4096)
[wmalossless @ 0000000002d04120] broken frame: channel len(6144) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] Expect wrong output since inverse LPC filter is not implemented. Update your FFmpeg ver
sion to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been i
mplemented.
[wmalossless @ 0000000002d04120] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/
and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[wmalossless @ 0000000002d04120] Expect wrong output since inverse LPC filter is not implemented. Update your FFmpeg ver
sion to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been i
mplemented.
[wmalossless @ 0000000002d04120] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/incoming/
and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)
[wmalossless @ 0000000002d04120] broken frame: channel len(4608) > samples_per_frame(4096)
Error while decoding stream #0:0: Invalid data found when processing input
[wmalossless @ 0000000002d04120] Order[0][0] 968 > max (256), not supported
Error while decoding stream #0:0: Invalid data found when processing input
size=   24720kB time=00:01:08.18 bitrate=2970.1kbits/s speed=1.27x
video:0kB audio:24720kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000735%
Exiting normally, received signal 2.

Change History (6)

comment:1 by Dennis, 10 years ago

​https://www.djxmmx.net/ffmpeg/5820/
"Out-File.wav" was created with ffmpeg, trans-coding the same file that was streamed over RTSP but directly on the hard disk.
"Out-RTSP.wav" was created with ffmpeg, trans-coding the RTSP stream.

in reply to:  1 comment:2 by Carl Eugen Hoyos, 10 years ago

Keywords: udp rtsp added
Version: unspecified → git-master

Replying to DJX:

​https://www.djxmmx.net/ffmpeg/5820/
"Out-File.wav" was created with ffmpeg, trans-coding the same file that was streamed over RTSP but directly on the hard disk.
"Out-RTSP.wav" was created with ffmpeg, trans-coding the RTSP stream.

I would say both do not help, providing the original wma lossless file might.

Am I correct that the issue is not reproducible with -rtsp_method tcp?

comment:3 by Dennis, 10 years ago

Sorry for not providing the original file.
I put a copy of it in the same directory: ​https://www.djxmmx.net/ffmpeg/5820/

As far as your suggestion of "-rtsp_method tcp", I tried that both before and after my input argument and I receive: "Unrecognized option 'rtsp_method'.Error splitting the argument list: Option not found".

I should of also mentioned this in my original post but this is an RTSP stream from a Windows Media Server.

comment:4 by Carl Eugen Hoyos, 10 years ago

Sorry, it should have been -rtsp_transport tcp.

comment:5 by Dennis, 10 years ago

Playing the same song again on the stream and running the modified command you suggested results in artifact free output and only a few warnings about "Non-monotonous DTS":

ffmpeg -rtsp_transport tcp -i rtsp://djxmmx.net/rap-rnb C:\Temp\Out-RTSP.wav
ffmpeg version N-81516-gbe07c25 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 --ena
ble-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --ena
ble-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --e
nable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
openh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-lib
soxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvo
rbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-li
bxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  libavutil      55. 29.100 / 55. 29.100
  libavcodec     57. 54.101 / 57. 54.101
  libavformat    57. 48.101 / 57. 48.101
  libavdevice    57.  0.102 / 57.  0.102
  libavfilter     6. 58.100 /  6. 58.100
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
[wmalossless @ 00000000002ce680] Decoding audio at 24 bit-depth
Input #0, rtsp, from 'rtsp://djxmmx.net/rap-rnb':
  Metadata:
    MediaFoundationVersion: 2.112
    DeviceConformanceTemplate: N2
    WM/WMADRCPeakReference: 32767
    WM/WMADRCPeakTarget: 32767
    WM/WMADRCAverageReference: 10194
    WM/WMADRCAverageTarget: 10194
    genre           : R&B
    WMFSDKVersion   : 11.0.5721.5145
    WMFSDKNeeded    : 0.0.0.0000
    album           : Thr33 Ringz
    track           : 11
    WM/Track        : 10
    WM/Year         : 2008
    PeakValue       : 32673
    AverageLevel    : 7035
    IsVBR           : 1
    title           : Long Lap Dance
    artist          : T-Pain
  Duration: 00:04:36.47, start: 1.962000, bitrate: N/A
    Stream #0:0: Audio: wmalossless (c[1][0][0] / 0x0163), 96000 Hz, stereo, s32p (24 bit), 1152 kb/s
[wmalossless @ 00000000002cc2e0] Decoding audio at 24 bit-depth
[wav @ 0000000002d13b80] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar in
stead.
Output #0, wav, to 'C:\Temp\Out-RTSP.wav':
  Metadata:
    MediaFoundationVersion: 2.112
    DeviceConformanceTemplate: N2
    WM/WMADRCPeakReference: 32767
    WM/WMADRCPeakTarget: 32767
    WM/WMADRCAverageReference: 10194
    WM/WMADRCAverageTarget: 10194
    IGNR            : R&B
    WMFSDKVersion   : 11.0.5721.5145
    WMFSDKNeeded    : 0.0.0.0000
    IPRD            : Thr33 Ringz
    IPRT            : 11
    WM/Track        : 10
    WM/Year         : 2008
    PeakValue       : 32673
    AverageLevel    : 7035
    IsVBR           : 1
    INAM            : Long Lap Dance
    IART            : T-Pain
    ISFT            : Lavf57.48.101
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 96000 Hz, stereo, s16, 3072 kb/s
    Metadata:
      encoder         : Lavc57.54.101 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (wmalossless (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[wav @ 0000000002d13b80] Non-monotonous DTS in output stream 0:0; previous: 577600, current: 577536; changing to 577600.
 This may result in incorrect timestamps in the output file.
[wav @ 0000000002d13b80] Non-monotonous DTS in output stream 0:0; previous: 9158752, current: 9158688; changing to 91587
52. This may result in incorrect timestamps in the output file.
[wav @ 0000000002d13b80] Non-monotonous DTS in output stream 0:0; previous: 9617536, current: 9617472; changing to 96175
36. This may result in incorrect timestamps in the output file.
[wav @ 0000000002d13b80] Non-monotonous DTS in output stream 0:0; previous: 15913024, current: 15912960; changing to 159
13024. This may result in incorrect timestamps in the output file.
[wav @ 0000000002d13b80] Non-monotonous DTS in output stream 0:0; previous: 16580704, current: 16580640; changing to 165
80704. This may result in incorrect timestamps in the output file.
[wav @ 0000000002d13b80] Non-monotonous DTS in output stream 0:0; previous: 26275936, current: 26275872; changing to 262
75936. This may result in incorrect timestamps in the output file.
[wav @ 0000000002d13b80] Non-monotonous DTS in output stream 0:0; previous: 26349664, current: 26349600; changing to 263
49664. This may result in incorrect timestamps in the output file.
av_interleaved_write_frame(): Immediate exit requested
Error writing trailer of C:\Temp\Out-RTSP.wav: Immediate exit requestedsize=  102816kB time=00:04:34.54 bitrate=3067.9kb
its/s speed=0.973x
video:0kB audio:102827kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Exiting normally, received signal 2.

comment:6 by Elon Musk, 10 years ago

I don't think there is much to do here.

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