[FFmpeg-user] Force input format for video and audio / Mapping streams to the correct encoders/muxers
racer at gmx.ch
racer at gmx.ch
Fri Aug 24 01:00:00 EEST 2018
Hi ffmegy's and ffmegers,
I'm trying to get a conversion to a youtube compatible format to work. Imho,
with this one it means, converting the audio from PCM se24be to, say, aac,
since when uploading, I only get noise/static on the audio. Without using
-f, I get the same noise on the audio after conversion, as I get when
uploading Test1.mp4 directly to Youtube. So, I figured, I should define the
input, but can't get it to work. I could be only a mapping problem.
The input file showing all the available streams:
C:\Downloads>ffmpeg -i "Test1.mp4"
ffmpeg version N-91655-g7e0df5910e Copyright (c) 2000-2018 the FFmpeg
developers
built with gcc 8.2.1 (GCC) 20180813
configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
--enable-libbluray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp
--enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
--enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom
--enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid
--enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2
--enable-avisynth
libavutil 56. 19.100 / 56. 19.100
libavcodec 58. 24.101 / 58. 24.101
libavformat 58. 17.103 / 58. 17.103
libavdevice 58. 4.101 / 58. 4.101
libavfilter 7. 26.100 / 7. 26.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Test1.mp4':
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: iso4avc1isom
creation_time : 2018-08-18T02:41:11.000000Z
Duration: 00:02:47.26, start: 0.000000, bitrate: 13724 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv,
bt709, progressive), 1920x1080, 10539 kb/s, SAR 1:1 DAR 16:9, 50 fps, 50
tbr, 50 tbn, 100 tbc (default)
Metadata:
creation_time : 2018-08-18T02:41:11.000000Z
handler_name : ?Apple Video Media Handler
encoder : H264/AVC
timecode : 00:00:00:00
Stream #0:1(eng): Audio: pcm_s24be (in24 / 0x34326E69), 48000 Hz,
stereo, s32 (24 bit), 2304 kb/s (default)
Metadata:
creation_time : 2018-08-18T02:41:11.000000Z
handler_name : ?Apple Sound Media Handler
timecode : 00:00:00:00
Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2018-08-18T02:41:11.000000Z
handler_name : ?Time Code Media Handler
timecode : 00:00:00:00
This seems to define the first stream as a pcm format, ignoring the rest,
but see for yourselves. Note, that the video stream seems to be totally
omitted. What am I missing here? Do I need to map the streams?
C:\Downloads>ffmpeg -f s24be -sample_rate 48000 -ac 2 -i "Test1.mp4" -c:v
copy -c:a aac -b:a 192k Test1_converted.mp4
ffmpeg version N-91655-g7e0df5910e Copyright (c) 2000-2018 the FFmpeg
developers
built with gcc 8.2.1 (GCC) 20180813
configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
--enable-libbluray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp
--enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
--enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom
--enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid
--enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2
--enable-avisynth
libavutil 56. 19.100 / 56. 19.100
libavcodec 58. 24.101 / 58. 24.101
libavformat 58. 17.103 / 58. 17.103
libavdevice 58. 4.101 / 58. 4.101
libavfilter 7. 26.100 / 7. 26.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
[s24be @ 000002029294ad40] Estimating duration from bitrate, this may be
inaccurate
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, s24be, from 'Test1.mp4':
Duration: 00:16:36.32, bitrate: 2303 kb/s
Stream #0:0: Audio: pcm_s24be, 48000 Hz, stereo, s32 (24 bit), 2304 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s24be (native) -> aac (native))
Press [q] to stop, [?] for help
Output #0, mp4, to 'Test1_converted.mp4':
Metadata:
encoder : Lavf58.17.103
Stream #0:0: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp
(24 bit), 192 kb/s
Metadata:
encoder : Lavc58.24.101 aac
[pcm_s24be @ 00000202929a8f40] Multiple frames in a packet.d=74.6x
[pcm_s24be @ 00000202929a8f40] Invalid PCM packet, data has size 4 but at
least a size of 6 was expected
Error while decoding stream #0:0: Invalid data found when processing input
size= 23508kB time=00:16:36.33 bitrate= 193.3kbits/s speed=74.6x
video:0kB audio:23325kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.786819%
[aac @ 00000202929cc0c0] Qavg: 395.107
I appreciate your help on this.
Thank you and best regards.
Urs
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