On Wed, Jan 14, 2015 at 6:04 PM, Ståle Kristoffersen <staal...@ifi.uio.no> wrote:
> I have a TS-file, which I unfortunately can't share, that contains only one > PID, and that is a 4K HEVC-video stream at around 30Mbps. > This file is from the middle of a broadcast and thus it do not start > cleanly. > > ffmpeg is not able to detect that the file is HEVC, and falls back to AAC > (with a score of 1), see [1]. > I have tried to increase -probesize, but that does not seem to make any > difference. > > After digging around I found that for hevc_probe to detect a stream it must > see at least the following NALs: "VPS", "SPS", "PPS" and "IRAP". My file > does not have thos NALs in the first 2.5 MB of the file, and it seems the > probe gives up after RAW_PACKET_BUFFER_SIZE (2500000) bytes. > > Increasing that and recompiling makes ffmpeg work fine. > > What is the correct approach for fixing this? > You can override this limit yourself with the format_probesize option, no need to recompile. - Hendrik _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
