Get ffmpeg information in friendly way

Every time I try to get some information about my video files with ffmpeg, it pukes a lot of useless information mixed with good things.

I'm using ffmpeg -i name_of_the_video.mpg.

There are any possibilities to get that in a friendly way? I mean JSON would be great (and even ugly XML is fine).

By now, I made my application parse the data with regex but there are lots of nasty corners that appear on some specific video files. I fixed all that I encountered, but there may be more.

I wanted something like:

{
"Stream 0": {
"type": "Video",
"codec": "h264",
"resolution": "720x480"
},
"Stream 1": {
"type": "Audio",
"bitrate": "128 kbps",
"channels": 2
}
}
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小开

您可以尝试使用 ffprobe:

ffprobe ... -print_format json
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最佳答案

A bit late, but perhaps still relevant to someone..

ffprobe is indeed an excellent way to go. Note, though, that you need to tell ffprobe what information you want it to display (with the -show_format, -show_packets and -show_streams options) or it'll just give you blank output (like you mention in one of your comments).

例如，ffprobe -v quiet -print_format json -show_format -show_streams somefile.asf会产生如下结果:

{
"streams": [{
"index": 0,
"codec_name": "wmv3",
"codec_long_name": "Windows Media Video 9",
"codec_type": "video",
"codec_time_base": "1/1000",
"codec_tag_string": "WMV3",
"codec_tag": "0x33564d57",
"width": 320,
"height": 240,
"has_b_frames": 0,
"pix_fmt": "yuv420p",
"level": -99,
"r_frame_rate": "30000/1001",
"avg_frame_rate": "0/0",
"time_base": "1/1000",
"start_time": "0.000",
"duration": "300.066",
"tags": {
"language": "eng"
}
}],
"format": {
"filename": "somefile.asf",
"nb_streams": 1,
"format_name": "asf",
"format_long_name": "ASF format",
"start_time": "0.000",
"duration": "300.066",
"tags": {
"WMFSDKVersion": "10.00.00.3646",
"WMFSDKNeeded": "0.0.0.0000",
"IsVBR": "0"
}
}
}
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现在可以使用 -progress -打印由 key=value格式化的友好信息。

ffmpeg  -i video.mp4 .......-s 1920x1080 -progress - -y out.mp4


speed=5.75x
frame=697
fps=167.7
stream_0_0_q=39.0
bitrate=2337.0kbits/s
total_size=6979778
out_time_ms=23893333
out_time=00:00:23.893333
dup_frames=0
drop_frames=0
小开

Another usage of ffprobe which is nicely parseable:

ffprobe -v error -select_streams v:0 -show_entries stream=width,height,r_frame_rate,bit_rate,codec_name,duration -of csv=p=0:s=x video.mp4

结果:

h264x600x480x25/1x385.680000x542326

-select_streams v:0只选择第一个视频流。如果删除该参数，每个视频流将得到一行。


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