Le 08/09/2022 à 00:04, James Board via ffmpeg-user a écrit :
I'm trying to re-encode an MKV file that I originally created with makemkv from
the original BluRay disc. My ffmpeg command is:
ffmpeg-4.1.2-amd64-static/ffmpeg -y -i
Twin_Peaks-_A_Limited_Event_Series_-_Disc_2_t01.mkv -c:a copy -c:v libx264
-preset slow -crf 20 Twin_Peaks-_A_Limited_Event_Series_-_Disc_2_t01_RECODE.mkv
The error is
Too many packets buffered for output stream 0:1.
Conversion failed!
I just want to re-encode these files to save disk space. Does anyone know how
I can resolve the above error? The full error message is below.
Thanks
--------------------------------------------------------------------
ffmpeg version 4.1.2-static https://johnvansickle.com/ffmpeg/ Copyright (c)
2000-2019 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration: --enable-gpl --enable-version3 --enable-static
--disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio
--cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp
--enable-gray --enable-libaom --enab!
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
[matroska,webm @ 0x5bf2480] Could not find codec parameters for stream 3
(Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, matroska,webm, from
'Twin_Peaks-_A_Limited_Event_Series_-_Disc_2_t01.mkv':
Metadata:
title : Twin Peaks: A Limited Event Series - Disc 2
encoder : libmakemkv v1.16.4 (1.3.10/1.5.2) x86_64-linux-gnu
creation_time : 2021-10-25T15:19:56.000000Z
Duration: 00:56:57.50, start: 0.000000, bitrate: 37009 kb/s
Chapter #0:0: start 0.000000, end 99.099000
Metadata:
title : Chapter 01
Chapter #0:1: start 99.099000, end 571.153917
Metadata:
title : Chapter 02
Chapter #0:2: start 571.153917, end 1180.512667
Metadata:
title : Chapter 03
Chapter #0:3: start 1180.512667, end 2008.840167
Metadata:
title : Chapter 04
Chapter #0:4: start 2008.840167, end 2526.732542
Metadata:
title : Chapter 05
Chapter #0:5: start 2526.732542, end 3312.851208
Metadata:
title : Chapter 06
Chapter #0:6: start 3312.851208, end 3417.497417
Metadata:
title : Chapter 07
Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR
1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc
Metadata:
BPS-eng : 33970403
DURATION-eng : 00:56:57.497416666
NUMBER_OF_FRAMES-eng: 81938
NUMBER_OF_BYTES-eng: 14511719069
SOURCE_ID-eng : 001011
_STATISTICS_WRITING_APP-eng: MakeMKV v1.16.4 linux(x64-release)
_STATISTICS_WRITING_DATE_UTC-eng: 2021-10-25 15:19:56
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
SOURCE_ID
Stream #0:1(eng): Audio: truehd, 96000 Hz, 5.1(side), s32 (24 bit)
(default)
Metadata:
title : Surround 5.1
BPS-eng : 2360136
DURATION-eng : 00:56:56.955000000
NUMBER_OF_FRAMES-eng: 4100346
NUMBER_OF_BYTES-eng: 1008060054
SOURCE_ID-eng : 001100
_STATISTICS_WRITING_APP-eng: MakeMKV v1.16.4 linux(x64-release)
_STATISTICS_WRITING_DATE_UTC-eng: 2021-10-25 15:19:56
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
SOURCE_ID
Stream #0:2(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 640 kb/s
Metadata:
title : Surround 5.1
BPS-eng : 640000
DURATION-eng : 00:56:56.992000000
NUMBER_OF_FRAMES-eng: 106781
NUMBER_OF_BYTES-eng: 273359360
SOURCE_ID-eng : 001100
_STATISTICS_WRITING_APP-eng: MakeMKV v1.16.4 linux(x64-release)
_STATISTICS_WRITING_DATE_UTC-eng: 2021-10-25 15:19:56
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
SOURCE_ID
Stream #0:3(eng): Subtitle: hdmv_pgs_subtitle Metadata:
BPS-eng : 26434
DURATION-eng : 00:56:36.622395833
NUMBER_OF_FRAMES-eng: 1518
NUMBER_OF_BYTES-eng: 11223488
SOURCE_ID-eng : 001200
_STATISTICS_WRITING_APP-eng: MakeMKV v1.16.4 linux(x64-release)
_STATISTICS_WRITING_DATE_UTC-eng: 2021-10-25 15:19:56
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
SOURCE_ID
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
Too many packets buffered for output stream 0:1.
Conversion failed!
A bit late, but anyway...
The stream 0:1 (the one that is responsible for the error) is the first
audio stream, which is a 5.1 truehd 24 bits/96kHz one. It is probably
quite big, and of a completely overkill quality. If you want to reduce
the file size, this is a good target: you may either transcode it to AAC
5.1 at 400kb/s, or completely drop it to keep the 0:2 stream, which is
the second audio track (in english too, and probably identical to the
first one, but lighter)
Reminder : by default ffmpeg keeps only 1 video track and 1 audio track
(so here you are implicitely dropping the second audio track and the
subtitle track). "-map 0" means that you keep all the tracks present in
the input file. "-map 0:0 -map 0:2 -map 0:3" means that you want to kepp
the video track, the second audio track, and the subtitle track.
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