如何从linux命令行获得视频文件的分辨率（宽度和高度）？
Answers
使用ffprobe （FFmpeg工具包的一部分）
例：
ffprobe -v quiet -print_format json -show_format -show_streams ~/Movies/big_buck_bunny_720p_5mb.mp4
输出：
{
"streams": [
{
"index": 0,
"codec_name": "h264",
"codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
"profile": "Main",
"codec_type": "video",
"codec_time_base": "1/50",
"codec_tag_string": "avc1",
"codec_tag": "0x31637661",
"width": 1280,
"height": 720,
"coded_width": 1280,
"coded_height": 720,
"has_b_frames": 0,
"sample_aspect_ratio": "1:1",
"display_aspect_ratio": "16:9",
"pix_fmt": "yuv420p",
"level": 31,
"chroma_location": "left",
"refs": 1,
"is_avc": "1",
"nal_length_size": "4",
"r_frame_rate": "25/1",
"avg_frame_rate": "25/1",
"time_base": "1/12800",
"start_pts": 0,
"start_time": "0.000000",
"duration_ts": 378368,
"duration": "29.560000",
"bit_rate": "1032960",
"bits_per_raw_sample": "8",
"nb_frames": "739",
"disposition": {
"default": 1,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0
},
"tags": {
"creation_time": "1970-01-01 00:00:00",
"language": "und",
"handler_name": "VideoHandler"
}
},
{
"index": 1,
"codec_name": "aac",
"codec_long_name": "AAC (Advanced Audio Coding)",
"profile": "LC",
"codec_type": "audio",
"codec_time_base": "1/48000",
"codec_tag_string": "mp4a",
"codec_tag": "0x6134706d",
"sample_fmt": "fltp",
"sample_rate": "48000",
"channels": 6,
"channel_layout": "5.1",
"bits_per_sample": 0,
"r_frame_rate": "0/0",
"avg_frame_rate": "0/0",
"time_base": "1/48000",
"start_pts": 0,
"start_time": "0.000000",
"duration_ts": 1419264,
"duration": "29.568000",
"bit_rate": "383960",
"max_bit_rate": "416704",
"nb_frames": "1386",
"disposition": {
"default": 1,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0
},
"tags": {
"creation_time": "1970-01-01 00:00:00",
"language": "und",
"handler_name": "SoundHandler"
}
}
],
"format": {
"filename": "/Users/farsheed/Movies/big_buck_bunny_720p_5mb.mp4",
"nb_streams": 2,
"nb_programs": 0,
"format_name": "mov,mp4,m4a,3gp,3g2,mj2",
"format_long_name": "QuickTime / MOV",
"start_time": "0.000000",
"duration": "29.568000",
"size": "5253880",
"bit_rate": "1421504",
"probe_score": 100,
"tags": {
"major_brand": "isom",
"minor_version": "512",
"compatible_brands": "isomiso2avc1mp41",
"creation_time": "1970-01-01 00:00:00",
"encoder": "Lavf53.24.2"
}
}
}
请参阅文档了解更多信息。
Question我一直在挖掘mplayer / mencoder和ffmpeg文档，我似乎无法提供任何东西 。 我对输出格式不是特别挑剔，因为我可以使用正则表达式将其拉出，我似乎无法获取数据。
使用ffprobe ：
$ eval $(ffprobe -v error -of flat=s=_ -select_streams v:0 -show_entries stream=height,width input.mkv)
$ size=${streams_stream_0_width}x${streams_stream_0_height}
$ echo $size
1280x720
请参阅FFprobe文档和FFmpeg Wiki：FFprobe提示 。
如果您只是对分辨率感兴趣，
ffprobe -v error -of flat=s=_ -select_streams v:0 -show_entries stream=height,width video.mkv
它也适用于Windows 。 这是在我的电脑上运行，建立所有文件的索引：
find //Q1207/Film -size +10000k -print -a -exec ./ffprobe.exe -v error -of flat=s=_ -select_streams v:0 -show_entries stream=height,width \{\} \; > //Q1207/Film/index.txt
这是我为了这个目的而编写的一个“差不多一行代码”。 在Linux和MacOS上都适合我。
#!/bin/bash
B='[[:blank:]]'
D='[[:digit:]]'
ffprobe "$1" 2>&1 \
| grep 'Stream.*Video.*fps' \
| sed "s/^.*$B\($D$D$D*x$D$D$D*\).*$/\1/"
