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We need to detect the video bitrate of a HLS stream with ffprobe by using the m3u8 file of the .ts.
If I use the m3u8, I can get the duration, dimensions, codecs used, audio bitrate, but no video bitrate is available in the response provided by ffprobe.
ffprobe -print_format json -show_format -show_streams -show_error http://gfrmedia-video-platform.s3.amazonaws.com/bumbia/2014/06/06/158217_20160126214307_bumbia-hls/hls1056k/158217_640x360-with-mp4-hls_bumbia-hls.m3u8
ffprobe version 2.8.3 Copyright (c) 2007-2015 the FFmpeg developers
built with Apple LLVM version 7.0.0 (clang-700.1.76)
configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
{
[http @ 0x7fcf09e19420] No trailing CRLF found in HTTP header.
Input #0, hls,applehttp, from 'http://gfrmedia-video-platform.s3.amazonaws.com/bumbia/2014/06/06/158217_20160126214307_bumbia-hls/hls1056k/158217_640x360-with-mp4-hls_bumbia-hls.m3u8':
Duration: 00:00:11.00, start: 9.940500, bitrate: 0 kb/s
Program 0
Metadata:
variant_bitrate : 0
Stream #0:0: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0:1: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 79 kb/s
"streams": [
{
"index": 0,
"codec_name": "h264",
"codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
"profile": "Constrained Baseline",
"codec_type": "video",
"codec_time_base": "1001/60000",
"codec_tag_string": "[27][0][0][0]",
"codec_tag": "0x001b",
"width": 640,
"height": 360,
"coded_width": 640,
"coded_height": 368,
"has_b_frames": 0,
"sample_aspect_ratio": "1:1",
"display_aspect_ratio": "16:9",
"pix_fmt": "yuv420p",
"level": 30,
"chroma_location": "left",
"refs": 1,
"is_avc": "0",
"nal_length_size": "0",
"r_frame_rate": "30000/1001",
"avg_frame_rate": "30000/1001",
"time_base": "1/90000",
"start_pts": 900000,
"start_time": "10.000000",
"bits_per_raw_sample": "8",
"disposition": {
"default": 0,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0
}
},
{
"index": 1,
"codec_name": "aac",
"codec_long_name": "AAC (Advanced Audio Coding)",
"profile": "LC",
"codec_type": "audio",
"codec_time_base": "1/44100",
"codec_tag_string": "[15][0][0][0]",
"codec_tag": "0x000f",
"sample_fmt": "fltp",
"sample_rate": "44100",
"channels": 2,
"channel_layout": "stereo",
"bits_per_sample": 0,
"r_frame_rate": "0/0",
"avg_frame_rate": "0/0",
"time_base": "1/90000",
"start_pts": 894645,
"start_time": "9.940500",
"bit_rate": "79931",
"disposition": {
"default": 0,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0
}
}
],
"format": {
"filename": "http://gfrmedia-video-platform.s3.amazonaws.com/bumbia/2014/06/06/158217_20160126214307_bumbia-hls/hls1056k/158217_640x360-with-mp4-hls_bumbia-hls.m3u8",
"nb_streams": 2,
"nb_programs": 1,
"format_name": "hls,applehttp",
"format_long_name": "Apple HTTP Live Streaming",
"start_time": "9.940500",
"duration": "11.000000",
"size": "281",
"bit_rate": "204",
"probe_score": 100
}
}
In this sample above, I know that video is around 520Kbps, but need to find a way to read that programatically with either ffprobe or any other way. With what I currently have I can get most of the information needed, but I'm missing one important value that is the video bitrate.
What other options could I try?
Thanks!
782
To find your video's bitrate information, open up a video in VLC and click on the Tools menu and select Media Information. In the window that appears, click the Statistics tab. On this screen, you'll see a chart under Input/Read. This displays a live view of the bitrate of your video as you watch it.
That would contain the bitrates of every video stream. If you use this command: ffprobe -i input. mp4 -v 0 -show_entries format=bit_rate -of compact=p=0:nk=1 >bitrate. txt This will put exactly the total bitrate into the textfile called bitrate.
ffprobe gathers information from multimedia streams and prints it in human- and machine-readable fashion. For example it can be used to check the format of the container used by a multimedia stream and the format and type of each media stream contained in it.
the best way to detect the average bandwidth is combine ffmpeg and pv command like this:
ffmpeg -re -i input.m3u8 -f flv - 2>/dev/null|pv -a >/dev/null
You may have to install pv apt-get install pv
Hope it helped you.
200
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