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April 2, 2012 19:19
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Using ffprobe to get info from a file in a nice JSON format
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| ffprobe -v quiet -print_format json -show_format -show_streams "lolwut.mp4" > "lolwut.mp4.json" |
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| { | |
| "streams": [ | |
| { | |
| "index": 0, | |
| "codec_name": "h264", | |
| "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10", | |
| "codec_type": "video", | |
| "codec_time_base": "1001/48000", | |
| "codec_tag_string": "avc1", | |
| "codec_tag": "0x31637661", | |
| "width": 1280, | |
| "height": 720, | |
| "has_b_frames": 0, | |
| "pix_fmt": "yuv420p", | |
| "level": 31, | |
| "is_avc": "1", | |
| "nal_length_size": "4", | |
| "r_frame_rate": "35029/1461", | |
| "avg_frame_rate": "35029/1461", | |
| "time_base": "1/35029", | |
| "start_time": "0.000000", | |
| "duration": "1239.195267", | |
| "bit_rate": "1782423", | |
| "nb_frames": "29711", | |
| "tags": { | |
| "creation_time": "1970-01-01 00:00:00", | |
| "language": "und", | |
| "handler_name": "VideoHandler" | |
| } | |
| }, | |
| { | |
| "index": 1, | |
| "codec_name": "aac", | |
| "codec_long_name": "Advanced Audio Coding", | |
| "codec_type": "audio", | |
| "codec_time_base": "1/48000", | |
| "codec_tag_string": "mp4a", | |
| "codec_tag": "0x6134706d", | |
| "sample_fmt": "s16", | |
| "sample_rate": "48000", | |
| "channels": 2, | |
| "bits_per_sample": 0, | |
| "r_frame_rate": "0/0", | |
| "avg_frame_rate": "0/0", | |
| "time_base": "1/48000", | |
| "start_time": "0.000000", | |
| "duration": "1239.059396", | |
| "bit_rate": "127966", | |
| "nb_frames": "58081", | |
| "tags": { | |
| "creation_time": "2012-04-01 15:42:28", | |
| "language": "jpn", | |
| "handler_name": "GPAC ISO Audio Handler" | |
| } | |
| } | |
| ], | |
| "format": { | |
| "filename": "lolwut.mp4", | |
| "nb_streams": 2, | |
| "format_name": "mov,mp4,m4a,3gp,3g2,mj2", | |
| "format_long_name": "QuickTime/MPEG-4/Motion JPEG 2000 format", | |
| "start_time": "0.000000", | |
| "duration": "1239.195000", | |
| "size": "296323860", | |
| "bit_rate": "1913008", | |
| "tags": { | |
| "major_brand": "isom", | |
| "minor_version": "1", | |
| "compatible_brands": "isom", | |
| "creation_time": "2012-04-01 15:42:24" | |
| } | |
| } | |
| } |
is there a way to grab these informations using one of library provided by ffmpeg using C?
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@Jehoel, thank you for your reply. Really, you are right. I would like a way to analyze HLS and MPEG-DASH stream with FFmpeg (the segmentSize, segmentDuration) and check its integrity.