#4427: ffprobe read_intervals not correctly working with avi -------------------------------------+------------------------------------- Reporter: martinr92 | Type: defect Status: new | Priority: normal Component: ffprobe | Version: Keywords: | unspecified read_intervals | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: I'd like to receive the key frames of a avi video, that are in a range of 2-5 seconds. For this I'm using ffprobe {{{ ffprobe -print_format json -select_streams v -read_intervals 00:00:10%+2 -show_frames test.avi }}} It's a 25 fps video, so I should receive 50 frames + maybe some frames before second 10 (seeking to the key-frame). In this case, it starts with frame 195 (7,8 seconds) which is ok. {{{ { "frames": [ { "media_type": "video", "key_frame": 1, "pkt_dts": 195, "pkt_dts_time": "7.800000", "best_effort_timestamp": 195, "best_effort_timestamp_time": "7.800000", "pkt_duration": 1, "pkt_duration_time": "0.040000", "pkt_pos": "656024", "pkt_size": "28089", "width": 720, "height": 576, "pix_fmt": "yuv420p", "sample_aspect_ratio": "64:45", "pict_type": "I", "coded_picture_number": 0, "display_picture_number": 0, "interlaced_frame": 0, "top_field_first": 0, "repeat_pict": 0 }, { "media_type": "video", "key_frame": 0, "pkt_dts": 196, "pkt_dts_time": "7.840000", "best_effort_timestamp": 196, "best_effort_timestamp_time": "7.840000", "pkt_duration": 1, "pkt_duration_time": "0.040000", "pkt_pos": "697704", "pkt_size": "2325", "width": 720, "height": 576, "pix_fmt": "yuv420p", "sample_aspect_ratio": "64:45", "pict_type": "B", "coded_picture_number": 3, "display_picture_number": 0, "interlaced_frame": 0, "top_field_first": 0, "repeat_pict": 0 }, { "media_type": "video", "key_frame": 0, "pkt_dts": 197, "pkt_dts_time": "7.880000", "best_effort_timestamp": 197, "best_effort_timestamp_time": "7.880000", "pkt_duration": 1, "pkt_duration_time": "0.040000", "pkt_pos": "694028", "pkt_size": "2500", "width": 720, "height": 576, "pix_fmt": "yuv420p", "sample_aspect_ratio": "64:45", "pict_type": "B", "coded_picture_number": 2, "display_picture_number": 0, "interlaced_frame": 0, "top_field_first": 0, "repeat_pict": 0 }, [....] }}} Not ok for me is the end, because it should stop after frame 300 (second 12). In this case, it's running to frame 791 (31 seconds), End of video. {{{ { "media_type": "video", "key_frame": 0, "pkt_dts": 790, "pkt_dts_time": "31.600000", "best_effort_timestamp": 790, "best_effort_timestamp_time": "31.600000", "pkt_duration": 1, "pkt_duration_time": "0.040000", "pkt_pos": "3552780", "pkt_size": "2162", "width": 720, "height": 576, "pix_fmt": "yuv420p", "sample_aspect_ratio": "64:45", "pict_type": "B", "coded_picture_number": 597, "display_picture_number": 0, "interlaced_frame": 0, "top_field_first": 0, "repeat_pict": 0 }, { "media_type": "video", "key_frame": 0, "pkt_dts": 791, "pkt_dts_time": "31.640000", "best_effort_timestamp": 791, "best_effort_timestamp_time": "31.640000", "pkt_duration": 1, "pkt_duration_time": "0.040000", "pkt_pos": "3549024", "pkt_size": "2580", "width": 720, "height": 576, "pix_fmt": "yuv420p", "sample_aspect_ratio": "64:45", "pict_type": "B", "coded_picture_number": 596, "display_picture_number": 0, "interlaced_frame": 0, "top_field_first": 0, "repeat_pict": 0 }, { "media_type": "video", "key_frame": 0, "pkt_duration": 1, "pkt_duration_time": "0.040000", "pkt_pos": "3540824", "pkt_size": "7608", "width": 720, "height": 576, "pix_fmt": "yuv420p", "sample_aspect_ratio": "64:45", "pict_type": "P", "coded_picture_number": 595, "display_picture_number": 0, "interlaced_frame": 0, "top_field_first": 0, "repeat_pict": 0 }, { "media_type": "video", "key_frame": 0, "pkt_duration": 1, "pkt_duration_time": "0.040000", "pkt_pos": "3556118", "pkt_size": "7294", "width": 720, "height": 576, "pix_fmt": "yuv420p", "sample_aspect_ratio": "64:45", "pict_type": "P", "coded_picture_number": 598, "display_picture_number": 0, "interlaced_frame": 0, "top_field_first": 0, "repeat_pict": 0 } }}} This is running on my MacBook with OS 10.10.2. See also attached test video. At the end, some traces: {{{ ffmpeg -v 9 -loglevel 99 -i test.avi ffmpeg version 2.6.1 Copyright (c) 2000-2015 the FFmpeg developers built with llvm-gcc 4.2.1 (LLVM build 2336.11.00) configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable- pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable- decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable- libopencore_amrnb --enable-filters --enable-libgsm --enable-libvidstab --enable-libx265 --disable-doc --arch=x86_64 --enable-runtime-cpudetect libavutil 54. 20.100 / 54. 20.100 libavcodec 56. 26.100 / 56. 26.100 libavformat 56. 25.101 / 56. 25.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 11.102 / 5. 11.102 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Splitting the commandline. Reading option '-v' ... matched as option 'v' (set logging level) with argument '9'. Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument '99'. Reading option '-i' ... matched as input file with argument 'test.avi'. Finished splitting the commandline. Parsing a group of options: global . Applying option v (set logging level) with argument 9. Successfully parsed a group of options. Parsing a group of options: input file test.avi. Successfully parsed a group of options. Opening an input file: test.avi. [avi @ 0x7f7f88807800] Format avi probed with size=2048 and score=100 [avi @ 0x7f7f88412fe0] use odml:1 [avi @ 0x7f7f88807800] Before avformat_find_stream_info() pos: 10960 bytes read:164864 seeks:4 [h264 @ 0x7f7f8880fe00] no picture [avi @ 0x7f7f88807800] All info found rfps: 24.750000 0.013325 Last message repeated 1 times rfps: 24.833333 0.005922 Last message repeated 1 times rfps: 24.916667 0.001481 Last message repeated 1 times rfps: 25.000000 0.000000 rfps: 25.083333 0.001481 Last message repeated 1 times rfps: 25.166667 0.005922 Last message repeated 1 times rfps: 25.250000 0.013325 Last message repeated 1 times rfps: 50.000000 0.000000 [avi @ 0x7f7f88807800] After avformat_find_stream_info() pos: 210341 bytes read:361472 seeks:4 frames:108 Input #0, avi, from 'test.avi': Metadata: title : Fun Size - S��es oder Saures encoder : Lavf56.25.101 encoded_by : www.onlinetvrecorder.com Duration: 00:00:31.68, start: 0.000000, bitrate: 908 kb/s Stream #0:0, 41, 1/25: Video: h264 (High) (H264 / 0x34363248), yuv420p(tv, bt470bg, left), 720x576 [SAR 64:45 DAR 16:9], 1/50, 701 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc Stream #0:1, 67, 3/125: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16p, 192 kb/s Successfully opened the file. At least one output file must be specified [AVIOContext @ 0x7f7f88412f20] Statistics: 361472 bytes read, 4 seeks }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/4427> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker