Determine video bitrate using ffmpeg

I am trying to determine video bitrate(For transcoding) using ffmpeg command,I tried following command.

ffmpeg -i 28572615.wmv 

and it produces the following output

    Input #0, asf, from '28572615.wmv':   Metadata:     major_brand     : isom     minor_version   : 1     compatible_brands: isomavc1     encoder         : Lavf57.36.100   Duration: 00:02:50.92, start: 0.000000, bitrate: 1982 kb/s     Stream #0:0: Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 640x360, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc     Stream #0:1: Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, 2 channels, fltp, 128 kb/s At least one output file must be specified 

If I use another video

ffmpeg -i with_out_sound.mp4 

then i get the following output

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'with_out_sound.mp4':   Metadata:     major_brand     : dash     minor_version   : 0     compatible_brands: iso6avc1mp41     creation_time   : 2015-04-21 05:14:57   Duration: 00:00:27.86, start: 0.000000, bitrate: 500 kb/s     Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 622x480 [SAR 1:1 DAR 311:240], 100 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc (default)     Metadata:       creation_time   : 2015-04-21 05:14:57       handler_name    : VideoHandler At least one output file must be specified 

The point I am confuse is that should I look in Duration metadata line or Video Stream metadata line(Stream #0:0) for video bitrate?


Category: video Time: 2016-07-29 Views: 0

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