I am having an issue with some of my recordings for our sermons at church. I had one last week where the Video file was 30:38 long and the WAV audio file was 30:30. Any idea why this is happening? It's not always this way. Sometimes the files are both the same duration even at the longer length of about 30 minutes. The first text file is the FFMpeg log of the different length files session and the second is one where both are the same length. Here are my settings.

vMix:
1920x1080 59.94P
48000khz Sample Rate 16bit PCM

Recording Settings:
FFMPEG
MPEG-2 TS
1920x1080 59.94P
50M
384k


One thing that I did notice is that is seems like on the video files that are the wrong size, if I look a the metadata of the Video File, it shows an audio bitrate of 256k instead of 384k. could this be a glitch in FFMPEG causing incorrect metadata. I also get this error when trying to do some processing to the video in FFMPEG

**************PROCESSING THE VIDEO IN FFMPEG AFTER RECORDING YIELDS THIS ERROR******
[mpegts @ 000001c4821ca140] start time for stream 1 is not set in estimate_timings_from_pts
[mpegts @ 000001c4821ca140] Could not find codec parameters for stream 1 (Audio: mp3 ([3][0][0][0] / 0x0003), 0 channels, s16p): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
************************************************************************************





***************DIFFERENT LENGTHS FOR AUDIO AND VIDEO********************************
ffmpeg started on 2017-09-24 at 10:48:08
Report written to "D:\Sermons\Sermon - 24 September 2017 - 10-48-08 AM.ts.log"
Command line:
"C:\\Program Files (x86)\\vMixupdate\\streaming\\ffmpeg.exe" -report -y -f asf -i "\\\\.\\pipe\\606af5a2-1941-4aec-aa02-59016f93f2ca" -r 59.94 -pix_fmt yuv420p -vcodec mpeg2video -maxrate:v 50M -minrate:v 50M -b:v 50M -acodec mp2 -b:a 384k -f mpegts "D:\\Sermons\\Sermon - 24 September 2017 - 10-48-08 AM.ts"
ffmpeg version 2.8.git Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.8.1 (rev2, Built by MinGW-W64 project)
configuration: --enable-gpl --enable-version3 --enable-libx264 --enable-zlib --enable-libfaac --enable-nonfree --cpu=i686 --enable-nvenc
libavutil 55. 2.100 / 55. 2.100
libavcodec 57. 3.100 / 57. 3.100
libavformat 57. 2.100 / 57. 2.100
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 9.100 / 6. 9.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.100 / 2. 0.100
libpostproc 54. 0.100 / 54. 0.100
[asf @ 030678a0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, asf, from '\\.\pipe\606af5a2-1941-4aec-aa02-59016f93f2ca':
Metadata:
DeviceConformanceTemplate: @
WMFSDKNeeded : 0.0.0.0000
WMFSDKVersion : 12.0.14393.1593
IsVBR : 0
Duration: N/A, start: 0.000000, bitrate: 29184 kb/s
Stream #0:0(eng): Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080, 27648 kb/s, 1k tbr, 1k tbn, 1k tbc
Stream #0:1(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, s16, 1536 kb/s
[mpeg2video @ 03069dc0] Automatically choosing VBV buffer size of 746 kbyte
Output #0, mpegts, to 'D:\Sermons\Sermon - 24 September 2017 - 10-48-08 AM.ts':
Metadata:
DeviceConformanceTemplate: @
WMFSDKNeeded : 0.0.0.0000
WMFSDKVersion : 12.0.14393.1593
IsVBR : 0
encoder : Lavf57.2.100
Stream #0:0(eng): Video: mpeg2video, yuv420p, 1920x1080, q=2-31, 50000 kb/s, 59.94 fps, 90k tbn, 59.94 tbc
Metadata:
encoder : Lavc57.3.100 mpeg2video
Stream #0:1(eng): Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
Metadata:
encoder : Lavc57.3.100 mp2
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
Stream #0:1 -> #0:1 (pcm_s16le (native) -> mp2 (native))
Press [q] to stop, [?] for help
frame= 33 fps=0.0 q=4.5 size= 0kB time=00:00:00.51 bitrate= 0.0kbits/s
frame= 64 fps= 63 q=6.3 size= 7232kB time=00:00:08.21 bitrate=7212.9kbits/s
frame= 96 fps= 63 q=3.9 size= 10822kB time=00:00:08.76 bitrate=10113.4kbits/s
...
...
...
...
frame=109662 fps= 60 q=3.3 size=12147687kB time=00:30:37.80 bitrate=54148.2kbits/s
frame=109692 fps= 60 q=5.0 size=12150929kB time=00:30:38.30 bitrate=54147.8kbits/s
frame=109717 fps= 60 q=6.7 Lsize=12153860kB time=00:30:38.76 bitrate=54147.4kbits/s
video:11172468kB audio:85825kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.954735%
***********************************************************************************






Here is the file from the video and audio that's aligned.


****************************SAME LENGTH FOR AUDIO AND VIDEO************************
ffmpeg started on 2017-09-03 at 10:43:59
Report written to "D:\Sermons\Sermon - 03 September 2017 - 10-43-59 AM.ts.log"
Command line:
"C:\\Program Files (x86)\\vMixupdate\\streaming\\ffmpeg.exe" -report -y -f asf -i "\\\\.\\pipe\\84148e38-75de-4429-bb3b-2d730b86ce61" -r 29.97 -pix_fmt yuv420p -vcodec mpeg2video -maxrate:v 25M -minrate:v 25M -b:v 25M -acodec mp2 -b:a 384k -f mpegts "D:\\Sermons\\Sermon - 03 September 2017 - 10-43-59 AM.ts"
ffmpeg version 2.8.git Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.8.1 (rev2, Built by MinGW-W64 project)
configuration: --enable-gpl --enable-version3 --enable-libx264 --enable-zlib --enable-libfaac --enable-nonfree --cpu=i686 --enable-nvenc
libavutil 55. 2.100 / 55. 2.100
libavcodec 57. 3.100 / 57. 3.100
libavformat 57. 2.100 / 57. 2.100
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 9.100 / 6. 9.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.100 / 2. 0.100
libpostproc 54. 0.100 / 54. 0.100
[asf @ 025f78a0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, asf, from '\\.\pipe\84148e38-75de-4429-bb3b-2d730b86ce61':
Metadata:
DeviceConformanceTemplate: @
WMFSDKNeeded : 0.0.0.0000
WMFSDKVersion : 12.0.14393.1378
IsVBR : 0
Duration: N/A, start: 0.000000, bitrate: 29184 kb/s
Stream #0:0(eng): Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080, 27648 kb/s, 1k tbr, 1k tbn, 1k tbc
Stream #0:1(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, s16, 1536 kb/s
[mpeg2video @ 025fa9e0] Automatically choosing VBV buffer size of 372 kbyte
Output #0, mpegts, to 'D:\Sermons\Sermon - 03 September 2017 - 10-43-59 AM.ts':
Metadata:
DeviceConformanceTemplate: @
WMFSDKNeeded : 0.0.0.0000
WMFSDKVersion : 12.0.14393.1378
IsVBR : 0
encoder : Lavf57.2.100
Stream #0:0(eng): Video: mpeg2video, yuv420p, 1920x1080, q=2-31, 25000 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
Metadata:
encoder : Lavc57.3.100 mpeg2video
Stream #0:1(eng): Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
Metadata:
encoder : Lavc57.3.100 mp2
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
Stream #0:1 -> #0:1 (pcm_s16le (native) -> mp2 (native))
Press [q] to stop, [?] for help
frame= 21 fps=0.0 q=5.6 size= 2246kB time=00:00:00.68 bitrate=26991.3kbits/s
frame= 36 fps= 35 q=4.7 size= 3905kB time=00:00:01.16 bitrate=27536.0kbits/s
frame= 51 fps= 33 q=4.9 size= 5596kB time=00:00:01.66 bitrate=27522.9kbits/s
frame= 66 fps= 33 q=7.4 size= 7261kB time=00:00:02.19 bitrate=27115.5kbits/s
frame= 81 fps= 32 q=4.0 size= 9001kB time=00:00:02.67 bitrate=27579.1kbits/s
...
...
...
frame=62514 fps= 30 q=4.5 size= 6979401kB time=00:34:47.16 bitrate=27393.7kbits/s
frame=62530 fps= 30 q=6.1 size= 6981207kB time=00:34:47.69 bitrate=27393.8kbits/s
frame=62546 fps= 30 q=4.0 size= 6983035kB time=00:34:48.22 bitrate=27394.1kbits/s
frame=62551 fps= 30 q=7.7 Lsize= 6983656kB time=00:34:48.41 bitrate=27394.0kbits/s
video:6369373kB audio:97894kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.984659%
*************************************************************************************