[FFmpeg-user] Invalid SampleDelta in STTS

[Julien Carrier]

Hello,

Could anyone tell me what does mean the warning message "Invalid
SampleDelta in STTS" ?
Thank you!

Julien


On Wed, Mar 20, 2013 at 9:45 AM, Julien Carrier <ju.carrier at gmail.com>wrote:

> Hello,
>
> I use ffmpeg to encode video files in order to use in HTML5 video tag. My
> input files are .mp4 files in h264 exported from Adobe Premiere CS5 and I
> want to create two output files, one in h264 - aac with higher compression
> in baseline profile and one in webm VP8 - vorbis.
>
> For some input files, I've got this warning from ffmpeg:
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x178f3a0] Invalid SampleDelta in STTS -31999.
> It does not prevent me from encoding the files but I would like to ask you
> what does it mean and if I should care and do something about it.
>
> I paste here the ffmpeg log for a webm compression:
>
> *******
> ffmpeg version N-38686-gd07de6d Copyright (c) 2000-2012 the FFmpeg
> developers
>   built on Mar  9 2012 17:08:40 with gcc 4.4.3
>   configuration: --enable-libmp3lame --enable-libxvid --enable-libvorbis
> --enable-gpl --enable-libfaac --enable-libtheora --enable-zlib
> --disable-shared --enable-libx264 --enable-libdirac --enable-nonfree
> --enable-version3 --enable-libschroedinger --enable-avfilter
> --enable-libspeex --enable-libopenjpeg --enable-libgsm --enable-postproc
> --enable-pthreads --enable-libopencore-amrnb --enable-libopencore-amrwb
> --enable-ffplay --enable-pthreads --prefix=/usr/local --enable-x11grab
> --enable-runtime-cpudetect --enable-bzlib --enable-libdc1394 --enable-libvpx
>   libavutil      51. 42.100 / 51. 42.100
>   libavcodec     54. 10.100 / 54. 10.100
>   libavformat    54.  2.100 / 54.  2.100
>   libavdevice    53.  4.100 / 53.  4.100
>   libavfilter     2. 63.100 /  2. 63.100
>   libswscale      2.  1.100 /  2.  1.100
>   libswresample   0.  7.100 /  0.  7.100
>   libpostproc    52.  0.100 / 52.  0.100
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x1d153a0] Invalid SampleDelta in STTS -31999
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'inputVideo.mp4':
>   Metadata:
>     major_brand     : mp42
>     minor_version   : 0
>     compatible_brands: mp42mp41
>     creation_time   : 2012-12-14 15:25:22
>   Duration: 00:01:31.05, start: 0.000000, bitrate: 14312 kb/s
>     Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p,
> 800x450 [SAR 1:1 DAR 16:9], 14005 kb/s, 25.01 fps, 25 tbr, 25k tbn, 50 tbc
>     Metadata:
>       creation_time   : 2012-12-14 15:25:22
>       handler_name    : Mainconcept MP4 Video Media Handler
>     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
> s16, 317 kb/s
>     Metadata:
>       creation_time   : 2012-12-14 15:25:22
>       handler_name    : Mainconcept MP4 Sound Media Handler
> [buffer @ 0x1d152c0] w:800 h:450 pixfmt:yuv420p tb:1/1000000 sar:1/1
> sws_param:
> Incompatible sample format 's16' for codec 'libvorbis', auto-selecting
> format 'flt'
> [libvpx @ 0x1d280e0] v0.9.7-p1
> [libvpx @ 0x1d280e0] --enable-pic --enable-shared --disable-install-bins
> --disable-install-srcs --target=x86_64-linux-gcc
> Output #0, webm, to '/home/juju/videos/outputVid.webm':
>   Metadata:
>     major_brand     : mp42
>     minor_version   : 0
>     compatible_brands: mp42mp41
>     creation_time   : 2012-12-14 15:25:22
>     encoder         : Lavf54.2.100
>     Stream #0:0(eng): Video: vp8, yuv420p, 800x450 [SAR 1:1 DAR 16:9],
> q=10-42, 300 kb/s, 1k tbn, 25 tbc
>     Metadata:
>       creation_time   : 2012-12-14 15:25:22
>       handler_name    : Mainconcept MP4 Video Media Handler
>     Stream #0:1(eng): Audio: vorbis, 48000 Hz, 1 channels, flt, 96 kb/s
>     Metadata:
>       creation_time   : 2012-12-14 15:25:22
>       handler_name    : Mainconcept MP4 Sound Media Handler
> Stream mapping:
>   Stream #0:0 -> #0:0 (h264 -> libvpx)
>   Stream #0:1 -> #0:1 (aac -> libvorbis)
> Press [q] to stop, [?] for help
> frame= 2275 fps= 11 q=0.0 Lsize=    3989kB time=00:01:31.04 bitrate=
> 358.9kbits/s
> video:2870kB audio:1067kB global headers:4kB muxing overhead 1.219887%
> ********
>
>
> Thank you very much for your advice.
>
> Julien
>
>