How can I choose which audio and subtitle tracks to keep when converting from MKV to MP4 with FFMPEG?

I have an .mkv file where there's 2 Audio tracks and 2 Subtitle tracks (SRT format).

I want to convert that .mkv to mp4 and have it have Audio track #2 and Sub track #2 as the ones to play when I launch the mp4.

I'm using FFMPEG, so I'm using this to convert:

ffmpeg -i myMovie.mkv -vcodec copy -acodec copy myMovieMP4.mp4

This causes 2 issues:

1. It uses the Audio track #1

2. The subtitles don't appear even when the subtitle track is selected

*EDIT: Results of ffmpeg -i test.mp4:

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf58.45.100 Duration: 00:22:59.76, start: 0.000000, bitrate: 362 kb/s Chapter #0:0: start 0.000000, end 90.400000 Metadata: title : Opening Chapter #0:1: start 90.400000, end 532.334000 Metadata: title : Part A Chapter #0:2: start 532.334000, end 1299.801000 Metadata: title : Part B Chapter #0:3: start 1299.801000, end 1359.334000 Metadata: title : Ending Chapter #0:4: start 1359.334000, end 1379.754000 Metadata: title : Next on AAAA Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv, unknown/bt709/unknown), 720x480 [SAR 1:1 DAR 3:2], 326 kb/s, SAR 8:9 DAR 4:3, 23.98 fps, 23.98 tbr, 16k tbn, 23.98 tbc (default) Metadata: handler_name : VideoHandler Stream #0:1(und): Audio: aac (HE-AAC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 30 kb/s (default) Metadata: handler_name : SoundHandler Stream #0:2(eng): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s (default) Metadata: handler_name : SubtitleHandler Stream #0:3(eng): Data: bin_data (text / 0x74786574) Metadata: handler_name : SubtitleHandler
At least one output file must be specified

*EDIT 2:

Input #0, matroska,webm, from 'myMovie.mkv': Metadata: creation_time : 2016-10-04T14:07:11.000000Z ENCODER : Lavf56.0.100 Duration: 00:22:59.79, start: 0.000000, bitrate: 388 kb/s Chapter #0:0: start 0.000000, end 90.400000 Metadata: title : Opening Chapter #0:1: start 90.400000, end 532.334000 Metadata: title : Part A Chapter #0:2: start 532.334000, end 1299.801000 Metadata: title : Part B Chapter #0:3: start 1299.801000, end 1359.334000 Metadata: title : Ending Chapter #0:4: start 1359.334000, end 1379.754000 Metadata: title : Next on AAAA Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv, unknown/bt709/unknown), 720x480 [SAR 1:1 DAR 3:2], SAR 8:9 DAR 4:3, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default) Metadata: title : Encoded with IFME v4.9.4.0 BPS : 326855 BPS-eng : 326855 DURATION : 00:22:59.755000000 DURATION-eng : 00:22:59.755000000 NUMBER_OF_FRAMES: 33081 NUMBER_OF_FRAMES-eng: 33081 NUMBER_OF_BYTES : 56372607 NUMBER_OF_BYTES-eng: 56372607 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:1: Audio: aac (HE-AAC), 48000 Hz, stereo, fltp (default) Metadata: title : Track 1 BPS : 29395 BPS-eng : 29395 DURATION : 00:22:59.755000000 DURATION-eng : 00:22:59.755000000 NUMBER_OF_FRAMES: 32338 NUMBER_OF_FRAMES-eng: 32338 NUMBER_OF_BYTES : 5069783 NUMBER_OF_BYTES-eng: 5069783 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:2: Audio: aac (HE-AAC), 48000 Hz, stereo, fltp Metadata: title : Track 2 BPS : 30140 BPS-eng : 30140 DURATION : 00:22:59.755000000 DURATION-eng : 00:22:59.755000000 NUMBER_OF_FRAMES: 32338 NUMBER_OF_FRAMES-eng: 32338 NUMBER_OF_BYTES : 5198254 NUMBER_OF_BYTES-eng: 5198254 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:3(eng): Subtitle: ass (default) Metadata: title : Signs/Songs Sub LANGUAGE : eng ENCODER : Lavc56.0.100 ass BPS : 13 BPS-eng : 13 DURATION : 00:22:38.710000000 DURATION-eng : 00:22:38.710000000 NUMBER_OF_FRAMES: 30 NUMBER_OF_FRAMES-eng: 30 NUMBER_OF_BYTES : 2313 NUMBER_OF_BYTES-eng: 2313 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:4(eng): Subtitle: ass Metadata: title : Full English Sub LANGUAGE : eng ENCODER : Lavc56.0.100 ass BPS : 112 BPS-eng : 112 DURATION : 00:22:53.940000000 DURATION-eng : 00:22:53.940000000 NUMBER_OF_FRAMES: 331 NUMBER_OF_FRAMES-eng: 331 NUMBER_OF_BYTES : 19247 NUMBER_OF_BYTES-eng: 19247 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Invalid input file index: 2.

*EDIT 3: Using this command:

ffmpeg -i myMovie.mkv -vcodec copy -acodec copy -map 0:s:1 -map 0:v:0 -map 0:a:1 -c:s mov_text test.mp4

Input #0, matroska,webm, from 'myMovie.mkv': Metadata: creation_time : 2016-10-04T14:07:11.000000Z ENCODER : Lavf56.0.100 Duration: 00:22:59.79, start: 0.000000, bitrate: 388 kb/s Chapter #0:0: start 0.000000, end 90.400000 Metadata: title : Opening Chapter #0:1: start 90.400000, end 532.334000 Metadata: title : Part A Chapter #0:2: start 532.334000, end 1299.801000 Metadata: title : Part B Chapter #0:3: start 1299.801000, end 1359.334000 Metadata: title : Ending Chapter #0:4: start 1359.334000, end 1379.754000 Metadata: title : Next on AAAA Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv, unknown/bt709/unknown), 720x480 [SAR 1:1 DAR 3:2], SAR 8:9 DAR 4:3, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default) Metadata: title : Encoded with IFME v4.9.4.0 BPS : 326855 BPS-eng : 326855 DURATION : 00:22:59.755000000 DURATION-eng : 00:22:59.755000000 NUMBER_OF_FRAMES: 33081 NUMBER_OF_FRAMES-eng: 33081 NUMBER_OF_BYTES : 56372607 NUMBER_OF_BYTES-eng: 56372607 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:1: Audio: aac (HE-AAC), 48000 Hz, stereo, fltp (default) Metadata: title : Track 1 BPS : 29395 BPS-eng : 29395 DURATION : 00:22:59.755000000 DURATION-eng : 00:22:59.755000000 NUMBER_OF_FRAMES: 32338 NUMBER_OF_FRAMES-eng: 32338 NUMBER_OF_BYTES : 5069783 NUMBER_OF_BYTES-eng: 5069783 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:2: Audio: aac (HE-AAC), 48000 Hz, stereo, fltp Metadata: title : Track 2 BPS : 30140 BPS-eng : 30140 DURATION : 00:22:59.755000000 DURATION-eng : 00:22:59.755000000 NUMBER_OF_FRAMES: 32338 NUMBER_OF_FRAMES-eng: 32338 NUMBER_OF_BYTES : 5198254 NUMBER_OF_BYTES-eng: 5198254 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:3(eng): Subtitle: ass (default) Metadata: title : Signs/Songs Sub LANGUAGE : eng ENCODER : Lavc56.0.100 ass BPS : 13 BPS-eng : 13 DURATION : 00:22:38.710000000 DURATION-eng : 00:22:38.710000000 NUMBER_OF_FRAMES: 30 NUMBER_OF_FRAMES-eng: 30 NUMBER_OF_BYTES : 2313 NUMBER_OF_BYTES-eng: 2313 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:4(eng): Subtitle: ass Metadata: title : Full English Sub LANGUAGE : eng ENCODER : Lavc56.0.100 ass BPS : 112 BPS-eng : 112 DURATION : 00:22:53.940000000 DURATION-eng : 00:22:53.940000000 NUMBER_OF_FRAMES: 331 NUMBER_OF_FRAMES-eng: 331 NUMBER_OF_BYTES : 19247 NUMBER_OF_BYTES-eng: 19247 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Output #0, mp4, to 'test.mp4': Metadata: encoder : Lavf58.45.100 Chapter #0:0: start 0.000000, end 90.400000 Metadata: title : Opening Chapter #0:1: start 90.400000, end 532.334000 Metadata: title : Part A Chapter #0:2: start 532.334000, end 1299.801000 Metadata: title : Part B Chapter #0:3: start 1299.801000, end 1359.334000 Metadata: title : Ending Chapter #0:4: start 1359.334000, end 1379.754000 Metadata: title : Next on AAAA Stream #0:0(eng): Subtitle: mov_text (tx3g / 0x67337874) Metadata: title : Full English Sub LANGUAGE : eng _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES BPS : 112 BPS-eng : 112 DURATION : 00:22:53.940000000 DURATION-eng : 00:22:53.940000000 NUMBER_OF_FRAMES: 331 NUMBER_OF_FRAMES-eng: 331 NUMBER_OF_BYTES : 19247 NUMBER_OF_BYTES-eng: 19247 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES encoder : Lavc58.91.100 mov_text Stream #0:1: Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv, unknown/bt709/unknown), 720x480 [SAR 8:9 DAR 4:3], q=2-31, 23.98 fps, 23.98 tbr, 16k tbn, 1k tbc (default) Metadata: title : Encoded with IFME v4.9.4.0 BPS : 326855 BPS-eng : 326855 DURATION : 00:22:59.755000000 DURATION-eng : 00:22:59.755000000 NUMBER_OF_FRAMES: 33081 NUMBER_OF_FRAMES-eng: 33081 NUMBER_OF_BYTES : 56372607 NUMBER_OF_BYTES-eng: 56372607 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Stream #0:2: Audio: aac (HE-AAC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp Metadata: title : Track 2 BPS : 30140 BPS-eng : 30140 DURATION : 00:22:59.755000000 DURATION-eng : 00:22:59.755000000 NUMBER_OF_FRAMES: 32338 NUMBER_OF_FRAMES-eng: 32338 NUMBER_OF_BYTES : 5198254 NUMBER_OF_BYTES-eng: 5198254 _STATISTICS_WRITING_APP: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_APP-eng: mkvmerge v9.2.0 ('Photograph') 64bit _STATISTICS_WRITING_DATE_UTC: 2016-10-04 14:07:11 _STATISTICS_WRITING_DATE_UTC-eng: 2016-10-04 14:07:11 _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream mapping: Stream #0:4 -> #0:0 (ass (ssa) -> mov_text (native)) Stream #0:0 -> #0:1 (copy) Stream #0:2 -> #0:2 (copy)
Press [q] to stop, [?] for help
frame=33081 fps=0.0 q=-1.0 Lsize= 61130kB time=00:22:59.74 bitrate= 363.0kbits/s speed=5.91e+03x
video:55051kB audio:5076kB subtitle:14kB other streams:0kB global headers:1kB muxing overhead: 1.644363%

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