#11531: Audio stream not muxed with -c:a copy from RTSP
------------------------------------+----------------------------------
Reporter: HelFix | Owner: (none)
Type: defect | Status: new
Priority: normal | Component: ffmpeg
Version: 7.1 | Resolution:
Keywords: AAC FFmpeg | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
------------------------------------+----------------------------------
Description changed by HelFix:
Old description:
> Summary of the bug:
> -How to reproduce:
> - Use the following command with an RTSP stream:
> {{{
> ffmpeg -rtsp_transport tcp -i
> rtsp://admin:admin@10.15.129.19:554/Streaming/Channels/102 -c:v copy -c:a
> copy output.mp4
> }}}
> - Test with:
> ffmpeg-n7.1-39-g64e2864cb9-linux64-gpl-7.1 or 6.1.1 (works).
> ffmpeg-n7.1-62-gb168ed9b14-linux64-gpl-7.1 and newer (fails).
>
> - Expected Behavior:
> Both video and audio streams are muxed into output.mp4. In n7.1-39,
> ffprobe shows:
> Video: h264, 1920x536, ~20 fps.
> Audio: aac, 32000 Hz, mono.
>
> - Actual Behavior:
> In n7.1-62:
> Video is muxed (e.g., 219 packets, 2116297 bytes).
> Audio is read (e.g., 366 packets, 39746 bytes) but not muxed (0 packets,
> 0 bytes).
> Example log from a similar 7.1 failure:
>
> {{{
> [in#0/rtsp] Input stream #0:1 (audio): 366 packets read (39746 bytes);
> [out#0/mp4] Output stream #0:1 (audio): 0 packets muxed (0 bytes);
> }}}
>
> {{{
> [rtsp @ 0x6044978bfbc0] SDP:
> v=0
> o=- 1743073449707371 1743073449707371 IN IP4 10.15.129.19
> s=Media Presentation
> e=NONE
> b=AS:5100
> t=0 0
> a=control:rtsp://10.15.129.19:554/Streaming/Channels/102/
> m=video 0 RTP/AVP 96
> c=IN IP4 0.0.0.0
> b=AS:5000
> a=recvonly
> a=x-dimensions:1920,536
> a=control:rtsp://10.15.129.19:554/Streaming/Channels/102/trackID=1
> a=rtpmap:96 H264/90000
> a=fmtp:96 profile-level-id=420029; packetization-mode=1; sprop-parameter-
> sets=Z0IAM4qKUDwCK8v/gACAALZAAAD6AAATiAE=,aM48gA==
> m=audio 0 RTP/AVP 104
> c=IN IP4 0.0.0.0
> b=AS:50
> a=recvonly
> a=control:rtsp://10.15.129.19:554/Streaming/Channels/102/trackID=2
> a=rtpmap:104 mpeg4-generic/32000/1
> a=fmtp:104 profile-level-id=15; streamtype=5; mode=AAC-hbr;
> config=1288;SizeLength=13; IndexLength=3; IndexDeltaLength=3; Profile=1;
> a=Media_header:MEDIAINFO=494D4B48010300000400000101200110007D0000007D000000000000000000000000000000000000;
> a=appversion:1.0
> }}}
>
> - Environment:
> OS: Ubuntu 24.04
> Builds: BtbN static Linux 64-bit GPL from https://github.com/BtbN/FFmpeg-
> Builds.
>
> Patches should be submitted to the ffmpeg-devel mailing list and not this
> bug tracker.
New description:
Summary of the bug:
-How to reproduce:
- Use the following command with an RTSP stream:
{{{
ffmpeg -rtsp_transport tcp -i
rtsp://admin:admin@10.15.129.19:554/Streaming/Channels/102 -c:v copy -c:a
copy output.mp4
}}}
- Test with:
ffmpeg-n7.1-39-g64e2864cb9-linux64-gpl-7.1 or 6.1.1 (works).
ffmpeg-n7.1-62-gb168ed9b14-linux64-gpl-7.1 and newer (fails).
- Expected Behavior:
Both video and audio streams are muxed into output.mp4. In n7.1-39,
ffprobe shows:
{{{
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
title : Media Presentation
encoder : Lavf61.7.100
Duration: 00:00:04.95, start: 0.000000, bitrate: 2591 kb/s
Stream #0:0[0x1](und): Video: h264 (Baseline) (avc1 / 0x31637661),
yuvj420p(pc, progressive), 1920x536 [SAR 1:1 DAR 240:67], 2558 kb/s, 19.80
fps, 20 tbr, 90k tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 32000 Hz,
mono, fltp, 26 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
}}}
- Actual Behavior:
In n7.1-62:
{{{
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
title : Media Presentation
encoder : Lavf61.7.100
Duration: 00:00:09.15, start: 0.000000, bitrate: 1918 kb/s
Stream #0:0[0x1](und): Video: h264 (Baseline) (avc1 / 0x31637661),
yuvj420p(pc, progressive), 1920x536 [SAR 1:1 DAR 240:67], 1917 kb/s, 19.34
fps, 20 tbr, 90k tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
}}}
Video is muxed (e.g., 219 packets, 2116297 bytes).
Audio is read (e.g., 366 packets, 39746 bytes) but not muxed (0 packets, 0
bytes).
Example log from a similar 7.1 failure:
{{{
[in#0/rtsp] Input stream #0:1 (audio): 366 packets read (39746 bytes);
[out#0/mp4] Output stream #0:1 (audio): 0 packets muxed (0 bytes);
}}}
{{{
[rtsp @ 0x6044978bfbc0] SDP:
v=0
o=- 1743073449707371 1743073449707371 IN IP4 10.15.129.19
s=Media Presentation
e=NONE
b=AS:5100
t=0 0
a=control:rtsp://10.15.129.19:554/Streaming/Channels/102/
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
b=AS:5000
a=recvonly
a=x-dimensions:1920,536
a=control:rtsp://10.15.129.19:554/Streaming/Channels/102/trackID=1
a=rtpmap:96 H264/90000
a=fmtp:96 profile-level-id=420029; packetization-mode=1; sprop-parameter-
sets=Z0IAM4qKUDwCK8v/gACAALZAAAD6AAATiAE=,aM48gA==
m=audio 0 RTP/AVP 104
c=IN IP4 0.0.0.0
b=AS:50
a=recvonly
a=control:rtsp://10.15.129.19:554/Streaming/Channels/102/trackID=2
a=rtpmap:104 mpeg4-generic/32000/1
a=fmtp:104 profile-level-id=15; streamtype=5; mode=AAC-hbr;
config=1288;SizeLength=13; IndexLength=3; IndexDeltaLength=3; Profile=1;
a=Media_header:MEDIAINFO=494D4B48010300000400000101200110007D0000007D000000000000000000000000000000000000;
a=appversion:1.0
}}}
- Environment:
OS: Ubuntu 24.04
Builds: BtbN static Linux 64-bit GPL from https://github.com/BtbN/FFmpeg-
Builds.
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11531#comment:1>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
_______________________________________________
FFmpeg-trac mailing list
FFmpeg-trac@avcodec.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-trac
To unsubscribe, visit link above, or email
ffmpeg-trac-requ...@ffmpeg.org with subject "unsubscribe".
