It expects no existing chapters in the file.It appends to an existing FFMETADATAFILE.It expects the chapters.txt file to be a txt file with 1 chapter per line starting with 0:00:00 style time stamps and followed by the title of the chapter.

It expects to be in the same directory as a 'chapters.txt' file to read from, and an 'FFMETADATAFILE' file to output to.The requirement to specify times as an integer of some time base, instead of the 1:30:20.5 style format usually used for displaying time is very off-putting to me, so I created a small helper script so I could just note down times while watching a video and have the metadata entries automatically worked out how my automatically. This will return all options and parameters when encoding with this encode method.TIMEBASE = 1/1000 START = 1 END = 448000 title = The Pledge TIMEBASE = 1/1000 START = 448001 END = 3883999 title = The Turn TIMEBASE = 1/1000 START = 3884000 END = 4418000 title = The Prestige To view more details on an encoder ffmpeg -h encoder=libx264 Libx264 encoder only supports video (V) also provided is the codec. D = Supports direct rendering method 1 V. You can also see the encoders and decoders for each codec. Looking at two popular codecs returned, h264 has DEV.LS whilst h265 has DEV.L meaning h265 is missing Lossless compression ability (In this version). hevc H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_qsv hevc_cuvid ) (encoders: libx265 nvenc_hevc hevc_amf hevc_nvenc hevc_qsv ) S = Lossless compression DEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_qsv h264_cuvid ) (encoders: libx264 libx264rgb h264_amf h264_nvenc h264_qsv nvenc nvenc_h264 )ĭEV.L. To list all codecs in FFmpeg simply do ffmpeg -codecs Think putting many frames and audio together and playing them back or when you skip ahead providing the right data. A codec is the logic to encoding or decoding a media stream, there are many different types with popular ones being H.264, HEVC ( H.265) and MPEG-4.Ĭodecs are different to containers like MP4, MKV and MOV because a codec manages the bitrate, resolution and frames whilst the container organizes and returns the data as sequence.

Ffmpeg map pgc