[FFmpeg-user] MPEG TS+PS parser

[Mark Filipak (ffmpeg)]

The command below does a flat, 1st level parse of an MPEG TS+PS (plus a little more). As I expand 
the parse further, I'm going to hit the limit of 'sed's capability (I think). For further parses 
I'll need to conditionally include subpatterns based on, 1, lookaheads with branching, and 2, 
bytesize values extracted by the parse (some of which will have to compute and remember index 
offsets). Both are capabilities that may be beyond sed's capabilities (I think).
-If possible, I plan to descend all the way into macroblocks. I'm already doing all this stuff by 
hand. Now I want to automate it.-

Got any suggestions how I should proceed?

BTW, give the command a try and let me know what you think.

Thanks,
Mark.

xxd -p -u VIDEOFILE \
| tr -d '\n' \
| sed -r 's/000001/\x0D\x0A&/g' \
| sed -r 's/^00000100/                 picture_start_code\: &/g' \
| sed -r 's/^000001(0[1-9A-F]|[1-9A][0-9A-F])/                   slice_start_code\: &/g' \
| sed -r 's/slice_start_code\: ......../&\x0D\x0A                              slice\: /g' \
| sed -r 's/^000001B0/                         (reserved)\: &/g' \
| sed -r 's/^000001B1/                         (reserved)\: &/g' \
| sed -r 's/^000001B2/               user_data_start_code\: &/g' \
| sed -r 's/^000001B3/               sequence_header_code\: &/g' \
| sed -r 's/^000001B4/                sequence_error_code\: &/g' \
| sed -r 's/^000001B50/                         (reserved)\: &/g' \
| sed -r 's/^000001B51/                 sequence_extension\: &/g' \
| sed -r 's/^000001B52/         sequence_display_extension\: &/g' \
| sed -r 's/^000001B53/             quant_matrix_extension\: &/g' \
| sed -r 's/^000001B54/                copyright_extension\: &/g' \
| sed -r 's/^000001B55/        sequence_scalable_extension\: &/g' \
| sed -r 's/^000001B56/                         (reserved)\: &/g' \
| sed -r 's/^000001B57/          picture_display_extension\: &/g' \
| sed -r 's/^000001B58/           picture_coding_extension\: &/g' \
| sed -r 's/^000001B59/ picture_spatial_scalable_extension\: &/g' \
| sed -r 's/^000001B5A/picture_temporal_scalable_extension\: &/g' \
| sed -r 's/^000001B5B/        camera_parameters_extension\: &/g' \
| sed -r 's/^000001B5C/                    ITU-T extension\: &/g' \
| sed -r 's/^000001B5D/                         (reserved)\: &/g' \
| sed -r 's/^000001B5E/                         (reserved)\: &/g' \
| sed -r 's/^000001B5F/                         (reserved)\: &/g' \
| sed -r 's/^000001B6/                         (reserved)\: &/g' \
| sed -r 's/^000001B7/                  sequence_end_code\: &/g' \
| sed -r 's/^000001B8/                   group_start_code\: &/g' \
| sed -r 's/^000001B9/              MPEG_program_end_code\: &/g' \
| sed -r 's/^000001BA/                    pack_start_code\: &/g' \
| sed -r 's/^000001BB/           system_header_start_code\: &/g' \
| sed -r 's/^000001BC/                 program_stream_map\: &/g' \
| sed -r 's/^000001BD/                   private_stream_1\: &/g' \
| sed -r 's/^000001BE/                     padding_stream\: &/g' \
| sed -r 's/^000001BF/                   private_stream_2\: &/g' \
| sed -r 's/^000001[CD]/                   pes_audio_header\: &/g' \
| sed -r 's/^000001E/                   pes_video_header\: &/g' \
| sed -r 's/pes_video_header\: ......../&\x0D\x0A                  pes_packet_length\: /g' \
| sed -r 's/pes_packet_length\: ........../&\x0D\x0A                                     /g' \
| sed -r 's/^000001F0/                         ECM_stream\: &/g' \
| sed -r 's/^000001F1/                         EMM_stream\: &/g' \
| sed -r 's/^000001F2/                       DSMCC_stream\: &/g' \
| sed -r 's/^000001F3/               ISO\/IEC_13522_stream\: &/g' \
| sed -r 's/^000001F4/              H.222.1 type A stream\: &/g' \
| sed -r 's/^000001F5/              H.222.1 type B stream\: &/g' \
| sed -r 's/^000001F6/              H.222.1 type C stream\: &/g' \
| sed -r 's/^000001F7/              H.222.1 type D stream\: &/g' \
| sed -r 's/^000001F8/              H.222.1 type E stream\: &/g' \
| sed -r 's/^000001F9/                   ancillary_stream\: &/g' \
| sed -r 's/^000001FA/       14496-1_SL-packetized_stream\: &/g' \
| sed -r 's/^000001FB/             14496-1_FlexMux_stream\: &/g' \
| sed -r 's/^000001FC/                    metadata stream\: &/g' \
| sed -r 's/^000001FD/                 extended_stream_id\: &/g' \
| sed -r 's/^000001FE/               reserved data stream\: &/g' \
| sed -r 's/^000001FF/           program_stream_directory\: &/g' \
 > VIDEOFILE.parsed.txt

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