Em Andamento

Splicing two consecutive mpeg2 programs

The project is implemented on ffmpeg project under linux OS. It's target is to implement a splice between two mpeg2? transportstreams?

on a single video and audio stream? (i.e. one video PID and one audio PID).

## Deliverables

Incentive:

The two streams, primary and secondary were encoded from different input [url removed, login to view] need to merge the secondary stream into the primary stream while the primary is transmitting,without causing the decoder any vbv-buffer underruns or overruns errors. Each stream wasdesigned in the encoder to enter the decoder vbv-buffer, but now while passing from one streaminto the other, conditions can change. The splice merge video and audio streams.?

Known assumption:

- The streams can be preprocessed using ffmpeg mpeg2 encoder.?

- Up to one second of black frames can be inserted in time of splice point

? ? (although this solution is less preferred).?

- Most likely, primary and secondary stream have the same video and audio

? ? bitrate.?

Interface:

a list of input streams is defined through the command line parameters.

In addition a list of splices definitions will supplied to ffmpeg using an input xml file (or maybe a table in mysql database, not sure yet)each splice definition will look like this:?

? ? splice ID,?

? ? primary stream ID,?

? ? secondary stream ID,splice time_stamp - this field can be time-stamp is milliseconds, or frame number, or pcr time-stamp(not sure yet)?

so ffmpeg will have all the data it needs, in advance.?

standard:

video and audio splicing are defined in ISO/IEC 13818-1 - Annex K?

the splice should set adaptation header fields:?

? ? splice_countdown, splice_type, DTS_next ... and maybe more?

verification:

the output stream will have no PCR errors, when using an analyzer.

the output stream will look good on a set-up box.?

? more details will be supplied in the following days?

? thanks?

dov

Habilidades: Serviços de audio, Engenharia, Linux, MySQL, PHP, Gestão de projetos, Arquitetura de software, Teste de Software, Videografia

Ver mais: video black box, primary services, list services linux, linux list services, encoder data, linux programs, audio video bitrate, ffmpeg audio output, iec , database command line interface, linux php ffmpeg, ffmpeg video merge, linux merge line, php ffmpeg merge, linux file merge command, mysql output table, php merge video, video stream decoder, ffmpeg programs, linux merge, ffmpeg output, mysql xml output, merge video audio, file merge linux, command line merge linux

Acerca do Empregador:
( 5 comentários ) Kibbutz Givat Haim Ihud, Israel

ID do Projeto: #2955562

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fasm

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