#!/bin/bash
set -euo pipefail
# Change directory to the root of the project
cd "$(dirname "$0")/.."
# Default to a source video
INPUT="${INPUT:-dev/source.mp4}"
# Output the fragmented MP4 to disk for testing.
OUTPUT="${OUTPUT:-dev/output.mp4}"
# Run ffmpeg the same as dev/pub, but:
# - print any errors/warnings
# - only loop twice
#
# Note this is artificially slowed down to real-time using the -re flag; you can remove it.
ffmpeg \
-re \
-y \
-i "$INPUT" \
-c copy \
-fps_mode passthrough \
-f mp4 -movflags cmaf+separate_moof+delay_moov+skip_trailer \
-frag_duration 1 \
"${OUTPUT}"
# % ffmpeg -f mp4 --ffmpeg -h muxer=mov
#
# ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
# Muxer mov [QuickTime / MOV]:
# Common extensions: mov.
# Default video codec: h264.
# Default audio codec: aac.
# mov/mp4/tgp/psp/tg2/ipod/ismv/f4v muxer AVOptions:
# -movflags <flags> E.......... MOV muxer flags (default 0)
# rtphint E.......... Add RTP hint tracks
# empty_moov E.......... Make the initial moov atom empty
# frag_keyframe E.......... Fragment at video keyframes
# frag_every_frame E.......... Fragment at every frame
# separate_moof E.......... Write separate moof/mdat atoms for each track
# frag_custom E.......... Flush fragments on caller requests
# isml E.......... Create a live smooth streaming feed (for pushing to a publishing point)
# faststart E.......... Run a second pass to put the index (moov atom) at the beginning of the file
# omit_tfhd_offset E.......... Omit the base data offset in tfhd atoms
# disable_chpl E.......... Disable Nero chapter atom
# default_base_moof E.......... Set the default-base-is-moof flag in tfhd atoms
# dash E.......... Write DASH compatible fragmented MP4
# cmaf E.......... Write CMAF compatible fragmented MP4
# frag_discont E.......... Signal that the next fragment is discontinuous from earlier ones
# delay_moov E.......... Delay writing the initial moov until the first fragment is cut, or until the first fragment flush
# global_sidx E.......... Write a global sidx index at the start of the file
# skip_sidx E.......... Skip writing of sidx atom
# write_colr E.......... Write colr atom even if the color info is unspecified (Experimental, may be renamed or changed, do not use from scripts)
# prefer_icc E.......... If writing colr atom prioritise usage of ICC profile if it exists in stream packet side data
# write_gama E.......... Write deprecated gama atom
# use_metadata_tags E.......... Use mdta atom for metadata.
# skip_trailer E.......... Skip writing the mfra/tfra/mfro trailer for fragmented files
# negative_cts_offsets E.......... Use negative CTS offsets (reducing the need for edit lists)
# -moov_size <int> E.......... maximum moov size so it can be placed at the begin (from 0 to INT_MAX) (default 0)
# -rtpflags <flags> E.......... RTP muxer flags (default 0)
# latm E.......... Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC
# rfc2190 E.......... Use RFC 2190 packetization instead of RFC 4629 for H.263
# skip_rtcp E.......... Don't send RTCP sender reports
# h264_mode0 E.......... Use mode 0 for H.264 in RTP
# send_bye E.......... Send RTCP BYE packets when finishing
# -skip_iods <boolean> E.......... Skip writing iods atom. (default true)
# -iods_audio_profile <int> E.......... iods audio profile atom. (from -1 to 255) (default -1)
# -iods_video_profile <int> E.......... iods video profile atom. (from -1 to 255) (default -1)
# -frag_duration <int> E.......... Maximum fragment duration (from 0 to INT_MAX) (default 0)
# -min_frag_duration <int> E.......... Minimum fragment duration (from 0 to INT_MAX) (default 0)
# -frag_size <int> E.......... Maximum fragment size (from 0 to INT_MAX) (default 0)
# -ism_lookahead <int> E.......... Number of lookahead entries for ISM files (from 0 to 255) (default 0)
# -video_track_timescale <int> E.......... set timescale of all video tracks (from 0 to INT_MAX) (default 0)
# -brand <string> E.......... Override major brand
# -use_editlist <boolean> E.......... use edit list (default auto)
# -fragment_index <int> E.......... Fragment number of the next fragment (from 1 to INT_MAX) (default 1)
# -mov_gamma <float> E.......... gamma value for gama atom (from 0 to 10) (default 0)
# -frag_interleave <int> E.......... Interleave samples within fragments (max number of consecutive samples, lower is tighter interleaving, but with more overhead) (from 0 to INT_MAX) (default 0)
# -encryption_scheme <string> E.......... Configures the encryption scheme, allowed values are none, cenc-aes-ctr
# -encryption_key <binary> E.......... The media encryption key (hex)
# -encryption_kid <binary> E.......... The media encryption key identifier (hex)
# -use_stream_ids_as_track_ids <boolean> E.......... use stream ids as track ids (default false)
# -write_btrt <boolean> E.......... force or disable writing btrt (default auto)
# -write_tmcd <boolean> E.......... force or disable writing tmcd (default auto)
# -write_prft <int> E.......... Write producer reference time box with specified time source (from 0 to 2) (default 0)
# wallclock 1 E..........
# pts 2 E..........
# -empty_hdlr_name <boolean> E.......... write zero-length name string in hdlr atoms within mdia and minf atoms (default false)
# -movie_timescale <int> E.......... set movie timescale (from 1 to INT_MAX) (default 1000)