[FFmpeg-devel] DVB Subtitles

Michael Niedermayer michaelni at gmx.at
Sun Jun 10 15:17:56 CEST 2012

On Sun, Jun 10, 2012 at 01:12:11PM +0100, JULIAN GARDNER wrote:
> Just pulled a new build and started trying my test dvb subtitles streams and NONE work, get loads of errors about DTS being wrong on the subtitle stream.
> Is there ongoing work to fix these or is dvb subtitles being left for dead?

> I did read a bit about the timeout, and someone saying that they are never about 20 seconds, well from my work i have seen dvb subs used to put a small channel icon on screen, and was present for nearly 2 hours.

Some "subtitles" may be present for 2 hours but the packets likely
get repeated at intervals shorter than 20 seconds otherwise one could
not start playback of such a stream from the middle. And i find even
20seconds unlikely long for that. That would implicate if one tuned
to a channel and started watching the channel logo would be missing
for 20 seconds in some cases

> Also the timeout sent is used as a "get out of jail", for removal in case of corrupted streams.
> Should i look into fixing it again, and if so what has been done to the chain as the last time i fixed it, and added hard subtitles, i used the deinterlace funstion to add hard subtitles to the output.

maybe nicolas and ubitux could comment here


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Those who are best at talking, realize last or never when they are wrong.
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