search for: framenumbers

Op 11-12-14 om 10:05 schreef Miroslav Lichvar: > but I'd rather see the real seeking bug fixed instead I think I might have a fix, but it touches quite a bit of code, so it'll take some time. I think the problem is that because bogus headers might pop up in the stream of which the CRC checks out, the whole frame is decoded to validate that a frame is correct. The bogus header

Hi all, A few (possibly dumb) questions about decoding.. 1. Is it possible to know the total size of FLAC metadata blocks in advance? Do I really need to parse all metadata blocks until I see the METADATA_BLOCK_HEADER with last-metadata-block == 1? 2. Is there a generally accepted best-practice for seeking if there is no seektable present in the file? The format states *"It is possible to

Hi All I am coding an application capable of playing theora movies using libtheora and libogg. Now, I need to know the duration of a theora movie in frames. I seem to be unable to find that information in the using either libtheora or libogg. Google gave a hit proposing to read the file backwards till the magic "OggS" could be found and then scan forward to the framenumber field

...rData(); while (ogg_page_serialno(&page) != tstream.serialno) if (ogg_sync_pageout(&sync, &page) <= 0) bufferData(); const ogg_int64_t actualFrame = theora_granule_frame(&decoder, ogg_page_granulepos(&page)); With some files, this code works fine. But with others, the framenumbers I get at the end have absolutely no resemblance to actual framenumbers. Sometimes they are even an order of magnitude off. Do I have to reinitialize the decode after each jump, just to be able to find the frame number? Or should I instead read the bytes in the file and find the granulepos this...

Hi people, Next issue at hand here is after I have done a seek in a theora file. At this point, I have to reinitialize the decoder so the viewing can continue. Again, I have code that works most of the time, but, well... Just after the last file position seek, this code is run: while ((result = ogg_sync_pageout(&sync, &page)) == 0) bufferData(); while

Erik de Castro Lopo wrote: > I think I have an alternative fix for the CVE which should not break > seeking. I'm working on getting an copy of the file with which to test. Patch applied and pushed. commit b4b2910bdca010808ccf2799f55562fa91f4347b Author: Erik de Castro Lopo <erikd at mega-nerd.com> Date: Wed Dec 10 18:54:16 2014 +1100

Hi, I've been thinking about how a Theora encoder could be integrated into mencoder or transcode and I'm not sure whether I understand the A/V sync strategy of Theora/Vorbis correctly. When transcoding from some video format (ie MPEG2 or DivX), at least some images of the video stream will have time stamps, as well as the fragments of the audio stream. Or at least time stamps can be