![]() `-ext EXTENSION, -extension EXTENSION`: Output file extension to use for output files that were not explicitly specified. If the output file name is not explicitly specified, the extension will govern the format (see '-extension' option). If not specified, the format will be inferred by ffmpeg from the output file name. `-ofmt OUTPUT_FORMAT, -output-format OUTPUT_FORMAT`: Media format to use for output file(s). If a simple string is used, you need to specify the argument with `-e=`.Įxamples: `-e ''` or `-e="-vbr 3"` If JSON is used, you need to wrap the whole argument in quotes to prevent shell expansion and to preserve literal quotes inside the string. You can either use a JSON-formatted list (i.e., a list of comma-separated, quoted elements within square brackets), or a simple string of space-separated arguments. `-e EXTRA_OUTPUT_OPTIONS, -extra-output-options EXTRA_OUTPUT_OPTIONS`: Extra output options list.Ī list of extra ffmpeg command line arguments. `-cn, -chapters-disable`: Do not write metadata to output `-mn, -metadata-disable`: Do not write metadata to output `-sn, -subtitle-disable`: Do not write subtitle streams to output Will attempt to copy video codec by default. `-c:v VIDEO_CODEC, -video-codec VIDEO_CODEC`: Video codec to use for output files (default: 'copy'). `-vn, -video-disable`: Do not write video streams to output `-koa, -keep-original-audio`: Copy original, non-normalized audio streams to output file `-ar SAMPLE_RATE, -sample-rate SAMPLE_RATE`: Audio sample rate to use for output files in Hz. If not specified, will use codec default. ![]() `-b:a AUDIO_BITRATE, -audio-bitrate AUDIO_BITRATE`: Audio bitrate in bits/s, or with K suffix. Will use PCM audio with input stream bit depth by default. `-c:a AUDIO_CODEC, -audio-codec AUDIO_CODEC`: Audio codec to use for output files. Multi-channel input files are not affected by this option. If set, this option will compensate for this effect. If a mono file is intended for playback on a stereo system, its EBU R128 measurement will be perceptually incorrect. `-dual-mono`: Treat mono input files as "dual-mono". The gain is applied before the true-peak limiter. `-offset OFFSET`: EBU Offset Gain (default: 0.0). `-tp TRUE_PEAK, -true-peak TRUE_PEAK`: EBU Maximum True Peak in dBTP (default: -2.0). `-lrt LOUDNESS_RANGE_TARGET, -loudness-range-target LOUDNESS_RANGE_TARGET`: EBU Loudness Range Target in LUFS (default: 7.0). ![]() `-p, -print-stats`: Print first pass loudness statistics formatted as JSON to stdout. `-t TARGET_LEVEL, -target-level TARGET_LEVEL`: Normalization target level in dB/LUFS (default: -23).įor EBU normalization, it corresponds to Integrated Loudness Target in LUFS. Peak normalization brings the signal to the specified peak level. RMS-based normalization brings the input file to the specified RMS level. [-nt `: Normalization type (default: `ebu`).ĮBU normalization performs two passes and normalizes according to EBU R128. Or download this repository, then run `pip install. ffmpeg v3.1 or above from installed in your \$PATH It can also perform RMS-based normalization (where the mean is lifted or attenuated), or peak normalization to a certain target level.īatch processing of several input files is possible, including video files. This program normalizes media files to a certain loudness level using the EBU R128 loudness normalization procedure. A utility for batch-normalizing audio using ffmpeg.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |