[FFmpeg-user] Frame number repeatsllnd time resets when encoding
Gordon Holtslander
gjholtslander at gmail.com
Tue Jul 23 00:51:10 CEST 2013
Dz lu pi poo bull pmlplhl I'll m loop
On Jul 22, 2013 11:47 AM, "Jason Palmer" <jpalmer at worldnow.com> wrote:
> Hi
>
> I am attempting to create a .mp4 file from an AJA Capture Source and I am
> seeing the following that I cannot explain:
>
>
> 1. The audio is out of sync with the video. I have tried the
> -async, -itsoffset, -ss flags and they did not work.
>
> 2. The frame number starts at frame 167 (instead of 0) and it
> repeats itself towards the end of the recorded video. In the output below,
> note how frame 871 is repeated multiple times.
>
> 3. The time of the output of ffmpeg starts at 5.75 seconds (instead
> of 0 seconds) and starts over. In the output below, note how once the
> output reaches 30 seconds (as specified by the -t flag), it starts over for
> about the same amount of time that ffmpeg takes to start the recording
> (~5.75 seconds). It is also at this time when the frame number repeats
> itself.
>
> Interestingly, the 5.75 seconds that ffmpeg takes to start recording is
> approximately how long the audio/video is out of sync. Note that I am
> copying the video stream (which is in h264 format) and the audio stream
> (which is in aac format). Any help/explanation would be greatly
> appreciated.
>
> Here is the command I am using:
>
> FFMPEG.EXE -y -rtbufsize 100M -f dshow -i video="Virtual Capture Source"
> -acodec aac -f dshow -i audio="Virtual Capture Source" -map 0:0 -map 1:0
> -absf aac_adtstoasc -acodec copy -vcodec copy -vsync drop -r 29 -copyinkf
> -aspect 16:9 -t 00:00:30 out.mp4
>
> Here is my output:
>
> FFMPEG.EXE -y -rtbufsize 100M -f dshow -i video="Virtual Capture Sour
> ce" -acodec aac -f dshow -i audio="Virtual Capture Source" -map 0:0 -map
> 1:0 -ab
> sf aac_adtstoasc -acodec copy -vcodec copy -vsync drop -r 29 -copyinkf
> -aspect 1
> 6:9 -t 00:00:30 out.mp4
> ffmpeg started on 2013-07-22 at 11:37:50
> Report written to "log.txt"
> ffmpeg version 2.0 Copyright (c) 2000-2013 the FFmpeg developers
> built on Jul 15 2013 16:04:21 with gcc 4.8.0 (rubenvb-4.8.0)
> configuration: --enable-static --disable-shared
> --prefix=/mingw/i686-w64-mingw
> 32 --arch=x86 --target-os=mingw32 --enable-gpl --enable-nonfree
> --enable-runtime
> -cpudetect --enable-openssl --enable-libfreetype --enable-fontconfig
> --enable-li
> bass --enable-zlib --enable-librtmp --enable-w32threads --enable-libx264
> --enabl
> e-libfdk-aac --enable-debug --disable-optimizations --disable-stripping
> libavutil 52. 38.100 / 52. 38.100
> libavcodec 55. 18.102 / 55. 18.102
> libavformat 55. 12.100 / 55. 12.100
> libavdevice 55. 3.100 / 55. 3.100
> libavfilter 3. 79.101 / 3. 79.101
> libswscale 2. 3.100 / 2. 3.100
> libswresample 0. 17.102 / 0. 17.102
> libpostproc 52. 3.100 / 52. 3.100
> [h264 @ 05e8e5e0] non-existing SPS 32 referenced in buffering period
> [h264 @ 05e8e5e0] non-existing PPS 0 referenced
> [h264 @ 05e8e5e0] decode_slice_header error
> [h264 @ 05e8e5e0] no frame!
> [h264 @ 05e8e5e0] non-existing SPS 0 referenced in buffering period
> [h264 @ 05e8e5e0] non-existing PPS 0 referenced
> [h264 @ 05e8e5e0] decode_slice_header error
> [h264 @ 05e8e5e0] no frame!
> [h264 @ 05e8e5e0] non-existing SPS 32 referenced in buffering period
> [h264 @ 05e8e5e0] non-existing PPS 0 referenced
> [h264 @ 05e8e5e0] decode_slice_header error
> [h264 @ 05e8e5e0] no frame!
> [h264 @ 05e8e5e0] non-existing SPS 0 referenced in buffering period
> [h264 @ 05e8e5e0] non-existing PPS 0 referenced
> [h264 @ 05e8e5e0] decode_slice_header error
> [h264 @ 05e8e5e0] no frame!
> [h264 @ 05e8e5e0] non-existing SPS 32 referenced in buffering period
> [h264 @ 05e8e5e0] non-existing PPS 0 referenced
> [h264 @ 05e8e5e0] decode_slice_header error
> [h264 @ 05e8e5e0] no frame!
> [h264 @ 05e8e5e0] non-existing SPS 0 referenced in buffering period
> [h264 @ 05e8e5e0] non-existing PPS 0 referenced
> [h264 @ 05e8e5e0] decode_slice_header error
> [h264 @ 05e8e5e0] no frame!
> [h264 @ 05e8e5e0] non-existing SPS 32 referenced in buffering period
> [h264 @ 05e8e5e0] non-existing PPS 0 referenced
> [h264 @ 05e8e5e0] decode_slice_header error
> [h264 @ 05e8e5e0] no frame!
> Input #0, dshow, from 'video=Virtual Capture Source':
> Duration: N/A, start: 2341547.916000, bitrate: N/A
> Stream #0:0: Video: h264 (Main), yuv420p, 854x480 [SAR 1:1 DAR
> 427:240], 4 t
> br, 10000k tbn, 58 tbc
> Input #1, dshow, from 'audio=Virtual Capture Source':
> Duration: N/A, start: 2341552.949000, bitrate: N/A
> Stream #1:0: Audio: aac, 48000 Hz, stereo, fltp
> Overriding aspect ratio with stream copy may produce invalid files
> Output #0, mp4, to out.mp4':
> Metadata:
> encoder : Lavf55.12.100
> Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 854x480
> [SAR 128
> 0:1281 DAR 16:9], q=2-31, 14848 tbn, 29 tbc
> Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo
> Stream mapping:
> Stream #0:0 -> #0:0 (copy)
> Stream #1:0 -> #0:1 (copy)
> Press [q] to stop, [?] for help
> [mp4 @ 0767f040] Encoder did not produce proper pts, making some up.
> frame= 167 fps=0.0 q=-1.0 size= 154kB time=00:00:05.75 bitrate=
> 219.6kbits/
> frame= 182 fps=182 q=-1.0 size= 245kB time=00:00:06.27 bitrate=
> 319.9kbits/
> frame= 196 fps=130 q=-1.0 size= 326kB time=00:00:06.75 bitrate=
> 395.6kbits/
> frame= 211 fps=105 q=-1.0 size= 430kB time=00:00:07.27 bitrate=
> 483.7kbits/
> frame= 225 fps= 90 q=-1.0 size= 559kB time=00:00:07.75 bitrate=
> 590.0kbits/
> frame= 240 fps= 80 q=-1.0 size= 697kB time=00:00:08.27 bitrate=
> 689.8kbits/
> frame= 254 fps= 72 q=-1.0 size= 776kB time=00:00:08.75 bitrate=
> 725.6kbits/
> frame= 269 fps= 67 q=-1.0 size= 849kB time=00:00:09.27 bitrate=
> 750.0kbits/
> frame= 283 fps= 63 q=-1.0 size= 910kB time=00:00:09.75 bitrate=
> 763.9kbits/
> frame= 298 fps= 59 q=-1.0 size= 983kB time=00:00:10.27 bitrate=
> 784.0kbits/
> frame= 312 fps= 57 q=-1.0 size= 1074kB time=00:00:10.75 bitrate=
> 818.0kbits/
> frame= 327 fps= 54 q=-1.0 size= 1175kB time=00:00:11.27 bitrate=
> 854.0kbits/
> frame= 341 fps= 52 q=-1.0 size= 1272kB time=00:00:11.75 bitrate=
> 886.3kbits/
> frame= 356 fps= 51 q=-1.0 size= 1358kB time=00:00:12.27 bitrate=
> 905.9kbits/
> frame= 371 fps= 49 q=-1.0 size= 1470kB time=00:00:12.79 bitrate=
> 941.4kbits/
> frame= 385 fps= 48 q=-1.0 size= 1577kB time=00:00:13.27 bitrate=
> 973.1kbits/
> frame= 400 fps= 47 q=-1.0 size= 1677kB time=00:00:13.79 bitrate=
> 996.0kbits/
> frame= 414 fps= 46 q=-1.0 size= 1788kB time=00:00:14.27
> bitrate=1026.2kbits/
> frame= 429 fps= 45 q=-1.0 size= 1907kB time=00:00:14.79
> bitrate=1055.8kbits/
> frame= 443 fps= 44 q=-1.0 size= 2020kB time=00:00:15.27
> bitrate=1083.3kbits/
> frame= 458 fps= 43 q=-1.0 size= 2152kB time=00:00:15.79
> bitrate=1116.2kbits/
> frame= 472 fps= 43 q=-1.0 size= 2278kB time=00:00:16.27
> bitrate=1146.6kbits/
> frame= 487 fps= 42 q=-1.0 size= 2338kB time=00:00:16.79
> bitrate=1140.3kbits/
> frame= 501 fps= 42 q=-1.0 size= 2429kB time=00:00:17.27
> bitrate=1152.0kbits/
> frame= 516 fps= 41 q=-1.0 size= 2543kB time=00:00:17.79
> bitrate=1171.0kbits/
> frame= 530 fps= 41 q=-1.0 size= 2626kB time=00:00:18.27
> bitrate=1177.2kbits/
> frame= 545 fps= 40 q=-1.0 size= 2725kB time=00:00:18.79
> bitrate=1187.9kbits/
> frame= 559 fps= 40 q=-1.0 size= 2840kB time=00:00:19.27
> bitrate=1207.1kbits/
> frame= 574 fps= 39 q=-1.0 size= 2941kB time=00:00:19.79
> bitrate=1217.1kbits/
> frame= 588 fps= 39 q=-1.0 size= 3058kB time=00:00:20.27
> bitrate=1235.4kbits/
> frame= 603 fps= 39 q=-1.0 size= 3170kB time=00:00:20.79
> bitrate=1249.1kbits/
> frame= 617 fps= 38 q=-1.0 size= 3299kB time=00:00:21.27
> bitrate=1270.2kbits/
> frame= 632 fps= 38 q=-1.0 size= 3335kB time=00:00:21.79
> bitrate=1253.6kbits/
> frame= 646 fps= 38 q=-1.0 size= 3424kB time=00:00:22.27
> bitrate=1259.1kbits/
> frame= 661 fps= 38 q=-1.0 size= 3554kB time=00:00:22.79
> bitrate=1277.4kbits/
> frame= 675 fps= 37 q=-1.0 size= 3633kB time=00:00:23.27
> bitrate=1278.6kbits/
> frame= 690 fps= 37 q=-1.0 size= 3724kB time=00:00:23.79
> bitrate=1282.1kbits/
> frame= 704 fps= 37 q=-1.0 size= 3830kB time=00:00:24.27
> bitrate=1292.4kbits/
> frame= 719 fps= 37 q=-1.0 size= 3942kB time=00:00:24.79
> bitrate=1302.4kbits/
> frame= 733 fps= 37 q=-1.0 size= 4051kB time=00:00:25.27
> bitrate=1312.9kbits/
> frame= 748 fps= 36 q=-1.0 size= 4131kB time=00:00:25.79
> bitrate=1312.0kbits/
> frame= 762 fps= 36 q=-1.0 size= 4223kB time=00:00:26.27
> bitrate=1316.6kbits/
> frame= 777 fps= 36 q=-1.0 size= 4317kB time=00:00:26.79
> bitrate=1320.1kbits/
> frame= 791 fps= 36 q=-1.0 size= 4436kB time=00:00:27.27
> bitrate=1332.4kbits/
> frame= 806 fps= 36 q=-1.0 size= 4556kB time=00:00:27.79
> bitrate=1342.8kbits/
> frame= 820 fps= 36 q=-1.0 size= 4626kB time=00:00:28.27
> bitrate=1340.2kbits/
> frame= 835 fps= 35 q=-1.0 size= 4731kB time=00:00:28.79
> bitrate=1346.1kbits/
> frame= 849 fps= 35 q=-1.0 size= 4813kB time=00:00:29.27
> bitrate=1346.8kbits/
> frame= 864 fps= 35 q=-1.0 size= 4904kB time=00:00:29.79
> bitrate=1348.4kbits/
> frame= 871 fps= 35 q=-1.0 size= 4963kB time=00:00:25.28
> bitrate=1608.3kbits/
> frame= 871 fps= 34 q=-1.0 size= 5067kB time=00:00:25.79
> bitrate=1609.5kbits/
> frame= 871 fps= 33 q=-1.0 size= 5197kB time=00:00:26.28
> bitrate=1619.9kbits/
> frame= 871 fps= 33 q=-1.0 size= 5315kB time=00:00:26.77
> bitrate=1626.1kbits/
> frame= 871 fps= 32 q=-1.0 size= 5400kB time=00:00:27.28
> bitrate=1621.2kbits/
> frame= 871 fps= 32 q=-1.0 size= 5512kB time=00:00:27.77
> bitrate=1625.7kbits/
> frame= 871 fps= 31 q=-1.0 size= 5633kB time=00:00:28.28
> bitrate=1631.4kbits/
> frame= 871 fps= 30 q=-1.0 size= 5771kB time=00:00:28.77
> bitrate=1642.7kbits/
> frame= 871 fps= 30 q=-1.0 size= 5908kB time=00:00:29.29
> bitrate=1652.3kbits/
> frame= 871 fps= 29 q=-1.0 size= 6033kB time=00:00:29.78
> bitrate=1659.5kbits/
> frame= 871 fps= 29 q=-1.0 Lsize= 6094kB time=00:00:30.03
> bitrate=1662.3kbits
> /s
> video:5493kB audio:586kB subtitle:0 global headers:0kB muxing overhead
> 0.249619%
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
More information about the ffmpeg-user
mailing list