[FFmpeg-devel] [PATCH v4] avformat/movenc: Added an option to disable SIDX atom

[Ronak]

> On Dec 11, 2018, at 3:28 PM, Gyan <ffmpeg at gyani.pro> wrote:
> 
> 
> On 12-12-2018 01:13 AM, Ronak wrote:
>> 
>> Looks like I found out why: https://github.com/FFmpeg/FFmpeg/blob/master/libavformat/hlsenc.c#L790. The hlsenc.c file overwrites whatever I pass in the command line...
> 
> That is a bug but there's still an error in your command. It should be,
> 
> 
>     -hls_ts_options movflags=+skip_sidx
> 
> This is because mp4 is a child muxer in this context. That hls option should be renamed.
> 
> Line 790 should be patched by adding + before frag_custom

That doesn't work.

ffmpeg -i input.mp4 -hls_ts_options movflags=+skip_sidx -codec copy -hls_time 0.97523809523809 -hls_segment_type fmp4 -hls_flags single_file -hls_playlist_type vod output.m3u8
ffmpeg version N-92677-gdd7d6034f1 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 4.4.6 (GCC) 20110731 (Red Hat 4.4.6-3)
  configuration: --prefix=/home/ronakp/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/ronakp/ffmpeg_build/include --extra-ldflags=-L/home/ronakp/ffmpeg_build/lib --extra-libs=-lpthread --extra-libs=-lm --bindir=/home/ronakp/bin --enable-gpl --enable-libfdk_aac --enable-libmp3lame --enable-libopus --enable-nonfree
  libavutil      56. 24.101 / 56. 24.101
  libavcodec     58. 42.100 / 58. 42.100
  libavformat    58. 24.100 / 58. 24.100
  libavdevice    58.  6.101 / 58.  6.101
  libavfilter     7. 46.101 /  7. 46.101
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isom
    creation_time   : 2013-11-14T18:23:26.000000Z
  Duration: 02:39:09.39, start: 0.000000, bitrate: 31 kb/s
    Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 30 kb/s (default)
    Metadata:
      creation_time   : 2013-11-14T18:23:26.000000Z
      handler_name    : GPAC ISO Audio Handler
[hls @ 0x23e1b00] Opening 'output.m4s' for writing
[hls @ 0x23e1b00] Some of provided format options in 'movflags=+skip_sidx' are not recognized
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
    Last message repeated 1 times

Also, I think whatever options I set on the command line are going to be overwritten by line 790 in hlsenc.c anyway no?

> 
> Gyan
> 
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