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  • Cannot download m3u8 using ffmpeg

    8 avril 2019, par Vũ Tuấn Anh

    I want to download a mp4 from m3u8 link using ffmpeg command.

    ffmpeg -i https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/master.m3u8 -c copy -bsf:a aac_adtstoasc output1.mp4

    But an error occurred when loading first segment

    https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/720/seg-1-v1-a1.ts?v=664e3521
    https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/master.m3u8: Invalid data found when processing input

    Someone helps me to solve my problem. Thanks !

    Full command

    ffmpeg -i https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/master.m3u8 -c copy -bsf:a aac_adtstoasc output2.mp4ffmpeg version 4.1.1-0york1~16.04 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
    
  configuration: --prefix=/usr --extra-version='0york1~16.04' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-nonfree --enable-libfdk-aac --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
    
  libavutil      56. 22.100 / 56. 22.100
    
  libavcodec     58. 35.100 / 58. 35.100
    
  libavformat    58. 20.100 / 58. 20.100
    
  libavdevice    58.  5.100 / 58.  5.100
    
  libavfilter     7. 40.101 /  7. 40.101
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  3.100 /  5.  3.100
    
  libswresample   3.  3.100 /  3.  3.100
    
  libpostproc    55.  3.100 / 55.  3.100
    
[hls,applehttp @ 0x56551c942500] Opening 'https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/720.m3u8?v=664e3521' for reading
    
[https @ 0x56551cd51280] Opening 'https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/480.m3u8?v=3f40a361' for reading
    
[https @ 0x56551cd51280] Opening 'https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/360.m3u8?v=aefcb682' for reading
    
[https @ 0x56551cd51280] Opening 'https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/240.m3u8?v=bda86a2a' for reading
    
[https @ 0x56551cd51280] Opening 'https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/144.m3u8?v=431e8038' for reading
    
[hls,applehttp @ 0x56551c942500] Opening 'https://kms.sohatv.vn/drm/55ceb3f8-4675-454a-bfc8-96cb04bbae8f.key' for reading
    
[hls,applehttp @ 0x56551c942500] Opening 'crypto+https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/720/seg-1-v1-a1.ts?v=664e3521' for reading
    
[hls,applehttp @ 0x56551c942500] Error when loading first segment 'https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/720/seg-1-v1-a1.ts?v=664e3521'
    
https://hls.mediacdn.vn/vtv/2019/4/7/0704sao-mai-1554652229269816114782-af6d9.mp4/master.m3u8: Invalid data found when processing input

  • FFMPEG - Download video in parts and concat, stutter at concat points

    23 juillet 2022, par rnbwSmn

    My goal is to download a video (or M3U8) in parts/chunks which I can later concat.

    


    For context, I would like to download videos in an Android Service which may be stopped at any time, so I think chunking is the right approach.

    


    After some time I got the "downloading the parts" right, using this. I would later put that in a function, and for now I chose the chunks to be 30 seconds long.

    


    %offset% = 30 * %part%

ffmpeg -ss %offset% -t 30 -i INPUT_FILE -avoid_negative_ts 1 out%part%.mp4


    


    The first line is just pseudocode, part is starting at 0.
This works fine, downloading 30 second long .mp4 files.

    


    After that I tried merging them together into a single .mp4. For the tests I only downloaded the first few parts.

    


    Concat command :

    


    ffmpeg -safe 0 -f concat -i concat.txt -c copy final.mp4


    


    This would be a very short concat.txt file :

    


    file 'out0.mp4'
file 'out1.mp4'


    


    The concat works but has one problem : At the point where both files are actually combined, so at 30 seconds, there is a small stutter in video and audio.

    


    So what I think is going on is that I download parts that are 30s long, starting at multiples of 30s so there is a small overlap ? In the "Details" part of the Windows file properties it also shows a length of 31 seconds, so the video is even longer than I want.

    


    I tried setting the duration of each part in the concat.txt, both to 30s and to 30s - 1 frame

    


    23.98 fps -> 1/23.98 spf = 0.0417s


    


    But with a duration of 30 as well as 29.9583, although it is better, there is still a small stutter.

    


    file 'out0.mp4'
duration 29.9583
file 'out1.mp4'
duration 29.9583


    


    I also tried with a different fileformat, .ts files, but the stutter was still there. I still think my timings are not quite right, but at this point I don't know where the problem is exactly. What do I need to change to remove the small stutter ?

    


  • How to download live streaming videos with HTTP .flv url

    20 février 2017, par Sajjad Darvishi

    I just wanted to record a live stream by downloading this link but it did’nt work by curl , ffmpeg and wget please help me how can i record this ?

    http://uhs-akamai.ustream.tv/dal09/dal09-uhs-live02/live/22505108/1487587571614/plain/uhs/1/chunk_1487590613_79324dc9f7.flv

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