command line util that returns video file info?

[wallywalters]

Hi. I'm looking for a utility that would look at a specified video file and return the number of channels in the audio stream. Ideally, I would like to be able to use it in a batch file in such a way that if it returned a result of "mono" (1-channel) it would execute a certain command, but if it returned 2 channels it would execute a different one. Is there such a utility, that can return these results this way? Thanks.

[ezcapper]

mediainfo should do that i would guess.

edit: Yeah it works for 1st part of what you said:

ezcapper@ezcapper-X501A1:~$ mediainfo save4.avi
General
Complete name                            : save4.avi
Format                                   : AVI
Format/Info                              : Audio Video Interleave
File size                                : 152 MiB
Duration                                 : 14 s 933 ms
Overall bit rate                         : 85.3 Mb/s

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High 4:4:4 Predictive@L4.2
Format settings, CABAC                   : No
Format settings, ReFrames                : 1 frame
Codec ID                                 : h264
Duration                                 : 14 s 933 ms
Bit rate                                 : 80.4 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:10
Frame rate                               : 30.000 FPS
Original frame rate                      : 60.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 1.292
Stream size                              : 143 MiB (94%)

Audio
ID                                       : 0
Format                                   : PCM
Format settings, Endianness              : Little
Format settings, Sign                    : Signed
Codec ID                                 : 1
Duration                                 : 14 s 933 ms
Bit rate mode                            : Constant
Bit rate                                 : 1 536 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 kHz
Bit depth                                : 16 bits
Stream size                              : 2.73 MiB (2%)
Alignment                                : Aligned on interleaves

[jagabo]

I believe ffprobe can do that too (comes with ffmpeg).

[_Al_]

use this: https://forum.videohelp.com/threads/377677-Video-batch-files?p=2470418&viewfull=1#post2470418

not sure how you orient yourself in batch script, that script above in that #26 post gives you that data into batch script variable, then you compare them

you can get a list of mediainfo cli parameters in txt file running that script that is right below that example in that same #26 input

[ezcapper]

I believe ffprobe can do that too (comes with ffmpeg).

it works with ffprobe too, then you can create a batch file using autohotkey. Create a macro that transports the information to notepad and then does what you want it to do. If my eyes were better, I'd do it for you it is very simple. You can probably have someone do it for you by posting on the autohotkey forums.

[JVRaines]

You can use the show_streams and select_streams options of FFprobe to save audio stream metadata into a file. Then you search the file with the For /F command until you find "channels=n" and grab the RHS value. If 1 then execute Command 1; if 2 then execute Command 2. All quite do-able in a batch file.

[wallywalters]

Thanks, everyone. MediaInfo seems to be easiest for my purposes. Here's the approach I settled on. It uses MediaInfo to check the number of audio channels in a file (the file in the example here is called "test.mp4"), outputs the answer into a temporary file, then assigns the contents of that temporary file to a variable and deletes the no-longer-needed temp file.

MediaInfo --Inform=Audio;%%Channels%% test.mp4 > tempVAR.txt
set /p tempVAR= < tempVAR.txt
del tempVAR.txt
echo %tempVAR%
pause