[FFmpeg-devel] [shan.wb at gmail.com: [libav-devel] Decoder for CEA-608 and World System Teletext]

Clément Bœsch u at pkh.me
Tue Jan 20 08:06:08 CET 2015

Hi Shan, I'm forwarding this to the appropriate mailing list and adding
Anshul in CC.

Am I interpreting your mail correctly if I say you do not plan to
contribute yourself to the project?

----- Forwarded message from Shan <shan.wb at gmail.com> -----

Date: Tue, 20 Jan 2015 01:24:10 +0000
From: Shan <shan.wb at gmail.com>
To: libav-devel at libav.org
Subject: [libav-devel] Decoder for CEA-608 and World System Teletext

Just a FYI,

I noticed the recent, but limited CEA-608 decoder addition to the ffmpeg
project.  I have developed my own version to translate these to 25
frame STL files a while ago in my own time for the broadcaster I work
for. I would have submitted them, but I loath using git for any thing
but basic retrival.  My code has a lower memory footprint, has full
char support with ASS styling, with built-in MXF VANC and DVB support.
I've put it up on my google site at

So if any one wants to include it can go ahead.

PS, for MXF you may need to add these lines to the demuxer:

static const MXFCodecUL mxf_data_essence_container_uls[] = {
// data essence container uls
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x09,0x0D,0x01,0x03,0x01,0x02,0x0D,0x00,0x00 },
14,   AV_CODEC_ID_NONE },    /* Generic VBI Data */
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x09,0x0D,0x01,0x03,0x01,0x02,0x0E,0x00,0x00 },
14,   AV_CODEC_ID_MXF_VANC }, /* Generic ANC Data */
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
0,      AV_CODEC_ID_NONE },

{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5C,0x00 },
mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /*

PPS, I not on this mailing list either.

libav-devel mailing list
libav-devel at libav.org

----- End forwarded message -----

Clément B.
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