Quote:
Originally Posted by Selur
Small question, when does MediaInfo report something other than 'vbr' as overall bitrate mode?
|
When it is not VBR ;-).
I have tons of files with CBR overall bitrate mode, mostly dump of satellite or from pro customer preparing to send the TS stream to satellite (or cable, both need CBR TS files)
Quote:
Originally Posted by Selur
(tried using bit rate stuffing with tsMuxeR but I always get vbr and
|
I need to add a big tolerance (30% = NOK, 50% = OK) with " --MpegTs_VbrDetection_Delta=0.5" (hidden feature, default is 0 = no tolerance) for flagging it it as CBR.
Quote:
Originally Posted by Selur
a max bitrate of 35MBit/s, which seems kind of odd for a ~500kbit/s stream)
|
Note my choice, ask to the developer of the software you used for the reason "peak_rate" field is filled with a so high value (lazy default?)
"
ETSI EN 300 468 v.1.14.1 - Specification for Service Information":
peak_rate:
The maximum momentary transport packet rate (i.e. 188 bytes divided by the time interval between start
times of two succeeding TS packets). At least an upper bound for this peak_rate should be given. This 22-bit field is
coded as a positive integer in units of 400 bit/s.
Code:
0178 0x001F - DVB - selection_information_section (188 bytes)
0178 Header (4 bytes)
0178 sync_byte: 71 (0x47)
0179 transport_error_indicator: No
0179 payload_unit_start_indicator: Yes
0179 transport_priority: No
0179 pid: 31 (0x001F) - (13 bits)
017B transport_scrambling_control: 0 (0x0) - (2 bits)
017B adaptation_field_control (adaptation): No
017B adaptation_field_control (payload): Yes
017B continuity_counter: 1 (0x1) - (4 bits)
017C File Header (1 bytes)
017C pointer_field: 0 (0x00)
017D DVB - selection_information_section - Version=0 - Section=0 (28 bytes)
017D Header (3 bytes)
017D table_id: 127 (0x7F)
017E section_syntax_indicator: Yes
017E private_indicator: Yes
017E reserved: 3 (0x3) - (2 bits)
017E section_length: 25 (0x019) - (12 bits)
0180 DVB_reserved_for_future_use: 65535 (0xFFFF)
0182 reserved: 3 (0x3) - (2 bits)
0182 version_number: 0 (0x00) - (5 bits)
0182 current_next_indicator: Yes
0183 section_number: 0 (0x00)
0184 last_section_number: 0 (0x00)
0185 DVB_reserved_for_future_use: 15 (0xF) - (4 bits)
0185 transmission_info_loop_length: 10 (0x00A) - (12 bits)
0187 Descriptors (10 bytes)
0187 DVB - partial_transport_stream_descriptor (10 bytes)
0187 Header (2 bytes)
0187 descriptor_tag: 99 (0x63)
0188 descriptor_length: 8 (0x08)
0189 DVB_reserved_future_use: 3 (0x3) - (2 bits)
0189 peak_rate: 88750 (0x015AAE) - (22 bits)
018C DVB_reserved_future_use: 3 (0x3) - (2 bits)
018C minimum_overall_smoothing_rate: 4194303 (0x3FFFFF) - (22 bits)
018F DVB_reserved_future_use: 3 (0x3) - (2 bits)
018F maximum_overall_smoothing_buffer: 16383 (0x3FFF) - (14 bits)
0191 0001 (4 bytes)
0191 service_id: 1 (0x0001)
0193 DVB_reserved_future_use: Yes
0193 running_status: 0 (0x0) - (3 bits) -
0193 service_loop_length: 0 (0x000) - (12 bits)
0195 CRC32: 874440526 (0x341EE74E)