[FFmpeg-user] Mapping of audio streams after -filter_complex concat
John Bartlett
john.bartlett at bci.eu.com
Sat Mar 29 09:47:12 CET 2014
Thanks for the reply. I understand that this is the problem. The bigger problem is that the two output streams are being mixed up by the concat filter.
The command line for each audio stream state the format etc to be used:
>> -c:a:[a0] mp2 -ab192k -ar 48000 -ac 2 -sample_fmt s16
>> -c:a:[a1] ac3 -ab 384k -ar 48000 -ac 2 -sample_fmt fltp
But these values are being ignored and swapped around after the concat filter
>> Stream #0:1: Audio: ac3, 48000 Hz, stereo, fltp, 384 kb/s
>> Stream #0:2: Audio: mp2, 48000 Hz, stereo, fltp, 384 kb/s
My guess is that the config for one stream is being ‘mapped’ onto the other.
I cannot see what I am doing wrong.
Any other help would be very much appreciated.
Thanks for your time.
John
On 29 Mar 2014, at 03:09, Bhikkhu Mettavihari <tv.lists at gmail.com> wrote:
> I am no expert, but
>
> [mp2 @ 0316ac00] Specified sample format fltp is invalid or not supported
>
> format fltp is invalid or not supported
> Could this be your problem.
>
>
> On Sat, Mar 29, 2014 at 4:59 AM, John Bartlett <john.bartlett at bci.eu.com>wrote:
>
>> All,
>>
>> I am attempting to join several files and ranscode. however the output
>> audio streams are swapped at the output of the concat filter and the
>> parameters associated with the streams appear to have been merged.
>>
>> Any help/advice is appreciated..
>>
>> The command I am using is:
>>
>> ffmpeg -i
>> D:\Transcode\itv\assets\inprogress\2459c45e-c9a0-439a-a933-1e3d49198038_sequence1.ts
>> -i
>> D:\Transcode\itv\assets\inprogress\2459c45e-c9a0-439a-a933-1e3d49198038_sequence2.ts
>> -i
>> D:\Transcode\itv\assets\inprogress\2459c45e-c9a0-439a-a933-1e3d49198038_sequence3.ts
>> -filter_complex "[0:0] [0:1] [0:2] [1:0] [1:1] [1:2] [2:0] [2:1] [2:2]
>> concat=n=3:v=1:a=2 [v0] [a0] [a1]" -map "[v0]" -map "[a0]" -map "[a1]"
>> -c:v:[v0] h264 -b:v 5000k -bufsize 600k -maxrate 5000k -minrate 5000k
>> -deinterlace -coder 1 -trellis 1 -r 25 -keyint_min 12 -g 12 -bf 1
>> -b_strategy 1 -partitions +parti8x8+parti4x4+partp8x8+partb8x8 -me_method
>> epzs -aspect 16:9 -s 720x576 -me_range 16 -sc_threshold 40 -i_qfactor 0.71
>> -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -pix_fmt yuv420p -c:a:[a0] mp2 -ab
>> 192k -ar 48000 -ac 2 -sample_fmt s16 -c:a:[a1] ac3 -ab 384k -ar 48000 -ac
>> 2 -sample_fmt fltp -f mpegts -y "d:\tank\Hp_2.ts"
>>
>>
>> The output I get is:
>>
>> Input #0, mpegts, from
>> 'D:\Transcode\itv\assets\inprogress\2459c45e-c9a0-439a-a933-1e3d49198038_sequence1.ts':
>> Duration: 00:00:05.48, start: 1.400000, bitrate: 94618 kb/s
>> Program 1
>> Metadata:
>> service_name : Service01
>> service_provider: FFmpeg
>> Stream #0:0[0x100]: Video: h264 (High 4:2:2 Intra) ([27][0][0][0] /
>> 0x001B), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50
>> tbc
>> Stream #0:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
>> stereo, s16p, 192 kb/s
>> Stream #0:2[0x102](eng): Audio: ac3 ([129][0][0][0] / 0x0081), 48000
>> Hz, stereo, fltp, 384 kb/s
>> Input #1, mpegts, from
>> 'D:\Transcode\itv\assets\inprogress\2459c45e-c9a0-439a-a933-1e3d49198038_sequence2.ts':
>> Duration: 00:00:00.99, start: 1.400000, bitrate: 75595 kb/s
>> Program 1
>> Metadata:
>> service_name : Service01
>> service_provider: FFmpeg
>> Stream #1:0[0x100]: Video: h264 (High 4:2:2 Intra) ([27][0][0][0] /
>> 0x001B), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50
>> tbc
>> Stream #1:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
>> stereo, s16p, 192 kb/s
>> Stream #1:2[0x102](eng): Audio: ac3 ([129][0][0][0] / 0x0081), 48000
>> Hz, stereo, fltp, 384 kb/s
>> Input #2, mpegts, from
>> 'D:\Transcode\itv\assets\inprogress\2459c45e-c9a0-439a-a933-1e3d49198038_sequence3.ts':
>> Duration: 00:00:03.23, start: 1.400000, bitrate: 92505 kb/s
>> Program 1
>> Metadata:
>> service_name : Service01
>> service_provider: FFmpeg
>> Stream #2:0[0x100]: Video: h264 (High 4:2:2 Intra) ([27][0][0][0] /
>> 0x001B), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50
>> tbc
>> Stream #2:1[0x101](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
>> stereo, s16p, 192 kb/s
>> Stream #2:2[0x102](eng): Audio: ac3 ([129][0][0][0] / 0x0081), 48000
>> Hz, stereo, fltp, 384 kb/s
>> [libx264 @ 03f90020] using SAR=64/45
>> [libx264 @ 03f90020] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
>> [libx264 @ 03f90020] profile High, level 3.0
>> [mp2 @ 0316ac00] Specified sample format fltp is invalid or not supported
>> Output #0, mpegts, to 'd:\tank\Hp_2.ts':
>> Stream #0:0: Video: h264 (libx264), yuv420p, 720x576 [SAR 64:45 DAR
>> 16:9], q=10-51, 5000 kb/s, 90k tbn, 25 tbc
>> Stream #0:1: Audio: ac3, 48000 Hz, stereo, fltp, 384 kb/s
>> Stream #0:2: Audio: mp2, 48000 Hz, stereo, fltp, 384 kb/s
>> Stream mapping:
>> Stream #0:0 (h264) -> concat:in0:v0
>> Stream #0:1 (mp2) -> concat:in0:a0
>> Stream #0:2 (ac3) -> concat:in0:a1
>> Stream #1:0 (h264) -> concat:in1:v0
>> Stream #1:1 (mp2) -> concat:in1:a0
>> Stream #1:2 (ac3) -> concat:in1:a1
>> Stream #2:0 (h264) -> concat:in2:v0
>> Stream #2:1 (mp2) -> concat:in2:a0
>> Stream #2:2 (ac3) -> concat:in2:a1
>> concat:out:v0 -> Stream #0:0 (libx264)
>> concat:out:a0 -> Stream #0:1 (ac3)
>> concat:out:a1 -> Stream #0:2 (mp2)
>> Error while opening encoder for output stream #0:2 - maybe incorrect
>> parameters such as bit_rate, rate, width or height
>>
>> John
>>
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>>
>
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John Bartlett
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