Update threefive-ffmpeg.md

threefive-ffmpeg.md

@@ -5,6 +5,7 @@
 # threefive works very well with ffmpeg. 
 * __ffmpeg changes the SCTE-35 (0x86) stream type to bin data (0x6)__
 * __threefive is the only SCTE35 tool that parses both  SCTE-35 `(0x86)` and bin data `(0x6)` stream types__.  
+* __the threefive cli tool can convert the stream_type back to `0x86` after ffmpeg changes it.
 
 ### Example 1
 ---
@@ -39,145 +40,18 @@ ffmpeg  -copyts -i  oldvid.ts -vcodec libx265  -map 0  -muxpreload 0 -muxdelay 0
   Stream #0:4[0x104]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 384 kb/s
   Stream #0:5[0x105]: Data: bin_data ([6][0][0][0] / 0x0006)
 ```
- * with the threefive cli tool
+ * You can parse it as is with the threefive cli tool
 ```js
 threefive newvid.ts
 ```
-* or write some code
-
- * Create 35.py
-
- ```smalltalk
- #!/usr/bin/env python3
-"""
-35.py
-    parses a stream for SCTE-35,
-    prints SCTE-35 messages
-"""
-
-import sys
-import threefive
-
-
-if __name__ == "__main__":
-    if len(sys.argv) > 1:
-        arg = sys.argv[1]
-    else:
-        arg = sys.stdin.buffer
-
-    strm = threefive.Stream(arg)
-    strm.decode()
-```
-* parse newvid.ts with 35.py
-
-```smalltalk
-a@debian:~$ pypy3 35.py  newvid.ts
-{
-    "info_section": {
-        "table_id": "0xfc",
-        "section_syntax_indicator": false,
-        "private": false,
-        "sap_type": "0x3",
-        "sap_details": "No Sap Type",
-        "section_length": 169,
-        "protocol_version": 0,
-        "encrypted_packet": false,
-        "encryption_algorithm": 0,
-        "pts_adjustment_ticks": 0,
-        "pts_adjustment": 0.0,
-        "cw_index": "0x0",
-        "tier": "0xfff",
-        "splice_command_length": 5,
-        "splice_command_type": 6,
-        "descriptor_loop_length": 147,
-        "crc": "0x8c829e81"
-    },
-    "command": {
-        "command_length": 5,
-        "command_type": 6,
-        "name": "Time Signal",
-        "time_specified_flag": true,
-        "pts_time": 14652.879367,
-        "pts_time_ticks": 1318759143
-    },
-    "descriptors": [
-        {
-            "tag": 2,
-            "descriptor_length": 21,
-            "name": "Segmentation Descriptor",
-            "identifier": "CUEI",
-            "components": [],
-            "segmentation_event_id": "0x949d1b0",
-            "segmentation_event_cancel_indicator": false,
-            "program_segmentation_flag": true,
-            "segmentation_duration_flag": false,
-            "delivery_not_restricted_flag": false,
-            "web_delivery_allowed_flag": true,
-            "no_regional_blackout_flag": true,
-            "archive_allowed_flag": true,
-            "device_restrictions": "No Restrictions",
-            "segmentation_message": "Provider Placement Opportunity End",
-            "segmentation_upid_type": 1,
-            "segmentation_upid_type_name": "Deprecated",
-            "segmentation_upid_length": 6,
-            "segmentation_upid": "300009",
-            "segmentation_type_id": 53,
-            "segment_num": 1,
-            "segments_expected": 1
-        },
-
-    ],
-    "packet_data": {
-        "pid": "0x105",
-        "program": 1,
-        "pcr_ticks": 1318822943,
-        "pcr": 14653.588256,
-        "pts_ticks": 1318890273,
-        "pts": 14654.336367
-    }
-}
-
-
-```
-* transcode with ffmpeg and pipe directly to 35.py
-```sh
-ffmpeg  -copyts -i  oldvid.ts -vcodec libx265  -map 0  -muxpreload 0 -muxdelay 0 -f mpegts - | python3 35.py
-
-```
-* transcode with ffmpeg and pipe into threefive cli
+* transcode with ffmpeg and pipe into threefive cli as is
 ```js
 ffmpeg  -copyts -i  oldvid.ts -vcodec libx265  -map 0  -muxpreload 0 -muxdelay 0 -f mpegts -| threefive
 ```
----
-## Example 2
-* use threefive to parse for SCTE-35 and pipe to ffplay
-1. Create 35proxy.py
-```smalltalk
-#!/usr/bin/env python3
-"""
-35proxy.py
-    parses a stream for SCTE-35,
-    prints SCTE-35 messages to stderr
-    and proxies the stream to stdin
-"""
-import sys
-import threefive
-
-
-if __name__ == "__main__":
-    if len(sys.argv) > 1:
-        arg = sys.argv[1]
-    else:
-        arg = sys.stdin.buffer
-    strm = threefive.Stream(arg)
-    strm.decode_proxy()
-```
-2. Run 35proxy.py and pipe to ffplay
-```smalltalk
-./35proxy.py vid.ts | ffplay -
-```
----
-* with threefive cli tool
+* You can also change the stream type from `0x6` back to `0x86` with __threefive sixfix__ so other SCTE-35 parsers can read the SCTE-35.
 ```js
-threefive proxy | ffplay -
+threefive mpegts sixfix sixed.ts
+fixing these pids {258}
+Wrote: sixfixed-newvideo.ts
 ```
+