[FFmpeg-user] ffmpeg producing garbled output / problems

[Roger Pack]

> $ ffmpeg -i main.mov -qscale:v 1 -c:v mpeg2video -vf "movie=watermark.mov
> [watermark]; [in][watermark] overlay=0:0 [out]" movie.mpg
> ffmpeg version 1.0.1 Copyright (c) 2000-2012 the FFmpeg developers
>   built on Dec 16 2012 11:09:15 with gcc 4.2.1 (GCC) (Apple Inc. build 5666)
> (dot 3)
>   configuration: --enable-nonfree --enable-gpl --enable-version3
> --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame
> --enable-libvorbis --enable-libtheora --enable-libfaac --enable-libxvid
> --enable-libx264 --enable-libvpx --enable-hardcoded-tables --enable-shared
> --enable-pthreads --disable-indevs
>   libavutil      51. 73.101 / 51. 73.101
>   libavcodec     54. 59.100 / 54. 59.100
>   libavformat    54. 29.104 / 54. 29.104
>   libavdevice    54.  2.101 / 54.  2.101
>   libavfilter     3. 17.100 /  3. 17.100
>   libswscale      2.  1.101 /  2.  1.101
>   libswresample   0. 15.100 /  0. 15.100
>   libpostproc    52.  0.100 / 52.  0.100
> Guessed Channel Layout for  Input Stream #0.1 : stereo
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'main.mov':
>   Metadata:
>     major_brand     : qt
>     minor_version   : 537199360
>     compatible_brands: qt
>     creation_time   : 2012-01-15 22:09:29
>   Duration: 00:01:00.19, start: 0.000000, bitrate: 140997 kb/s
>     Stream #0:0(eng): Video: prores (apcn / 0x6E637061), yuv422p10le,
> 1920x1080, 139434 kb/s, SAR 1:1 DAR 16:9, 29.97 fps, 29.97 tbr, 2997 tbn,
> 2997 tbc
>     Metadata:
>       creation_time   : 2012-01-15 22:09:29
>       handler_name    : Apple Alias Data Handler
>       timecode        : 01:09:35;24
>     Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz,
> stereo, s16, 1536 kb/s
>     Metadata:
>       creation_time   : 2012-01-15 22:09:29
>       handler_name    : Apple Alias Data Handler
>     Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
>     Metadata:
>       creation_time   : 2012-01-15 22:10:24
>       handler_name    : Apple Alias Data Handler
>       timecode        : 01:09:35;24
> [mpeg @ 0x10206fc00] VBV buffer size not set, muxing may fail
> Output #0, mpeg, to 'movie.mpg':
>   Metadata:
>     major_brand     : qt
>     minor_version   : 537199360
>     compatible_brands: qt
>     encoder         : Lavf54.29.104
>     Stream #0:0(eng): Video: mpeg2video, yuv420p, 1920x1080 [SAR 1:1 DAR
> 16:9], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
>     Metadata:
>       creation_time   : 2012-01-15 22:09:29
>       handler_name    : Apple Alias Data Handler
>       timecode        : 01:09:35;24
>     Stream #0:1(eng): Audio: mp2, 48000 Hz, stereo, s16, 128 kb/s
>     Metadata:
>       creation_time   : 2012-01-15 22:09:29
>       handler_name    : Apple Alias Data Handler
> Stream mapping:
>   Stream #0:0 -> #0:0 (prores -> mpeg2video)
>   Stream #0:1 -> #0:1 (pcm_s16le -> mp2)
> Press [q] to stop, [?] for help
> buffer underflow i=0 bufi=234323 size=242616me=00:00:01.98
> bitrate=18351.6kbits/s
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=234323 size=242616
>     Last message repeated 1 times
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=234323 size=242616
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=236364 size=242616
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=236364 size=242616
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=238405 size=242616
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=238405 size=242616
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=240446 size=242616
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=240446 size=242616
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=242487 size=242616
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=242487 size=242616
> buffer underflow i=0 bufi=234444 size=239195me=00:00:01.98
> bitrate=27246.3kbits/s
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=234444 size=239195
>     Last message repeated 1 times
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=234444 size=239195
>
> <SNIP - last message repeated>
>
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=266414 size=270003
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=268455 size=270003
> [mpeg @ 0x10206fc00] packet too large, ignoring buffer limits to mux it
> [mpeg @ 0x10206fc00] buffer underflow i=0 bufi=268455 size=270003
> frame= 1804 fps= 12 q=1.0 Lsize=  325244kB time=00:01:00.20
> bitrate=44254.7kbits/s
> video:323147kB audio:941kB subtitle:0 global headers:0kB muxing overhead
> 0.356663%

wonder if this particular one is related to
https://ffmpeg.org/trac/ffmpeg/ticket/1034
Also could you try it with git master?
-roger-