ffmpeg-2つのMP4ファイルを連結すると出力ファイルが不良になります
2つのMP4ファイルを生成しました。5秒のイントロファイルは以下のスクリプトで作成され、メインビデオ（約1分）はscreen-cast-omaticで作成されています。どちらもMP4形式です。 ffmpeg -f concat -i mylist.txt -c copy outputメソッドを使用してそれらを連結しようとすると、イントロファイルが正常に再生される出力ファイルが生成されます。次に、メインビデオが再生されます。オーディオは問題ありませんが、ビデオがめちゃくちゃになっていて、文字化けしたビデオが上に表示されます。
ffmpeg -i "concat:input1.mpg|input2.mpg|input3.mpg" -c copy output.mpgメソッドを使用すると、出力は完全ではないビデオになります。これに関するスクリプト出力は含めませんでした。
これをチェックして、推奨事項を提供できる人はいますか？
以下は、concatの最初のメソッドのスクリプトと出力です。
# intro_vid.cfg
#!/bin/bash
INPUTFILE="intro_vid.mp4"
LOGO=intro".png"
LOGOLENGTH="5"
SPEAKER="Jason"
TITLE="Basic SSH Video"
DATE="October 28, 2013"
SCENESTART="00:00:01"
SCENEDURATION="00:00:05"
OUTPUTFILE="intro_vid_final"
mylist.txt：
# Comment
file './intro_vid_final-intro.mp4'
file './ssh_main.mp4'
VideoEditIntro.sh：
#!/bin/bash
PARAMFILE=${1}
. ${PARAMFILE}
extractVideo () {
# Split the portion of the video that we want to work on directly from the source file
# converting the video to frame files one PNG file per frame and
# splitting the audio to to an MP3 file
rm -fr "${OUTPUTFILE}-frames"
mkdir -p "${OUTPUTFILE}-frames"
./ffmpeg -threads 4 \
-i ${INPUTFILE} -ss ${SCENESTART} -t ${SCENEDURATION} \
-f image2 -y "${OUTPUTFILE}-frames"/frame%d.png \
-c:a copy -y "${OUTPUTFILE}.m4a"
}
createIntro () {
# Create the introduction image by merging the logo file with the titles for the video
convert ${LOGO} -gravity Center -font DejaVu-Sans-Book \
-pointsize 20 -fill gray -draw "text 1,21 'University'" \
-fill white -draw "text 0,20 'University'" \
-pointsize 50 -fill gray -draw "text 2,72 '${SPEAKER}'" \
-fill white -draw "text 0,70 '${SPEAKER}'" \
-pointsize 30 -fill gray -draw "text 1,131 '${TITLE}'" \
-fill white -draw "text 0,130 '${TITLE}'" \
-pointsize 20 -fill gray -draw "text 1,171 '${DATE}'" \
-fill white -draw "text 0,170 '${DATE}'" \
"${OUTPUTFILE}-intro.png"
# Create still video from the introduction image and silence
./ffmpeg -ar 48000 -t ${LOGOLENGTH} -f s16le -ac 2 \
-channel_layout stereo -c:a pcm_s16le \
-i /dev/zero -ab 64K -c:a libvo_aacenc -y silence.m4a
./ffmpeg -loop 1 -i "${OUTPUTFILE}-intro.png" -q:v 1 \
-r 29.97 -t ${LOGOLENGTH} -y -f MP4 -pix_fmt yuv420p "${OUTPUTFILE}-logo1.mp4"
./ffmpeg -i "${OUTPUTFILE}-logo1.mp4" -i "silence.m4a" \
-c:v copy -c:a copy -map 0:0 -map 1:0 -threads 4 \
-y -f MP4 "${OUTPUTFILE}-intro.mp4"
}
reasembleVideo () {
# Merge the modified frames onto the original frames
# Reassembles the modified frames and the audio into an output video
# ./ffmpeg -threads 4 \
# -i concat:"${OUTPUTFILE}-intro.mp4"\|"ssh_main.mp4" \
# -r 29.97 -y "${OUTPUTFILE}-final_ssh.mp4"
./ffmpeg -f concat -i mylist.txt -codec copy "${OUTPUTFILE}-final_ssh.mp4"
}
# These functions do not depend on each other. They can be executed in parallel
extractVideo &
echo "CREATE INTRO ROUTINE"
createIntro &
wait
reasembleVideo
# Done!
echo "Done!"
処理出力は次のとおりです。
iavideo@colfax:~$ cd video/wip2/
iavideo@colfax:~/video/wip2$ cd video/wip2/./VideoEditIntro.sh intro_vid.cfg
CREATE INTRO ROUTINE
ffmpeg version N-57401-ga443b97 Copyright (c) 2000-2013 the FFmpeg developers
built on Oct 25 2013 05:34:36 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 47.101 / 52. 47.101
libavcodec 55. 38.101 / 55. 38.101
libavformat 55. 19.104 / 55. 19.104
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 89.100 / 3. 89.100
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro_vid.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
creation_time : 1970-01-01 00:00:00
Duration: 00:00:07.00, start: 0.000000, bitrate: 116 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1720x752, 46 kb/s, 10 fps, 10 tbr, 10 tbn, 20 tbc (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 75 kb/s (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : SoundHandler
[libx264 @ 0x3a6c140] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
[libx264 @ 0x3a6c140] profile High, level 3.2
[libx264 @ 0x3a6c140] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=10 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, image2, to 'intro_vid_final-frames/frame%d.png':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.19.104
Stream #0:0(und): Video: png, rgb24, 1720x752, q=2-31, 200 kb/s, 90k tbn, 10 tbc (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Output #1, iPod, to 'intro_vid_final.m4a':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.19.104
Stream #1:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1720x752, q=-1--1, 10240 tbn, 10 tbc (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #1:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, 75 kb/s (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> png)
Stream #0:0 -> #1:0 (h264 -> libx264)
Stream #0:1 -> #1:1 (copy)
Press [q] to stop, [?] for help
ffmpeg version N-57401-ga443b97 Copyright (c) 2000-2013 the FFmpeg developers
built on Oct 25 2013 05:34:36 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 47.101 / 52. 47.101
libavcodec 55. 38.101 / 55. 38.101
libavformat 55. 19.104 / 55. 19.104
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 89.100 / 3. 89.100
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, s16le, from '/dev/zero':
Duration: N/A, bitrate: 1536 kb/s
Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Output #0, iPod, to 'silence.m4a':
Metadata:
encoder : Lavf55.19.104
Stream #0:0: Audio: aac (libvo_aacenc) (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 64 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le -> libvo_aacenc)
Press [q] to stop, [?] for help
size= 41kB time=00:00:05.00 bitrate= 67.1kbits/s
video:0kB audio:39kB subtitle:0 global headers:0kB muxing overhead 4.190769%
ffmpeg version N-57401-ga443b97 Copyright (c) 2000-2013 the FFmpeg developers
built on Oct 25 2013 05:34:36 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 47.101 / 52. 47.101
libavcodec 55. 38.101 / 55. 38.101
libavformat 55. 19.104 / 55. 19.104
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 89.100 / 3. 89.100
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, image2, from 'intro_vid_final-intro.png':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, rgba, 1720x752, 25 fps, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0x32d6860] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
[libx264 @ 0x32d6860] profile High, level 3.2
[libx264 @ 0x32d6860] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'intro_vid_final-logo1.mp4':
Metadata:
encoder : Lavf55.19.104
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1720x752, q=-1--1, 11988 tbn, 29.97 tbc
Stream mapping:
Stream #0:0 -> #0:0 (png -> libx264)
Press [q] to stop, [?] for help
frame= 32 fps=0.0 q=0.0 q=0.0 size=N/A time=00:00:04.43 bitrate=N/A
frame= 41 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=7 drop=0
frame= 50 fps= 49 q=0.0 q=25.0 size=N/A time=00:00:06.10 bitrate=N/A
frame= 73 fps= 72 q=29.0 size= 8kB time=00:00:00.70 bitrate= 97.6kbits/s dup=12 drop=0
frame= 50 fps= 33 q=0.0 Lq=-1.0 size=N/A time=00:00:06.80 bitrate=N/A
video:608kB audio:57kB subtitle:0 global headers:0kB muxing overhead -100.003232%
[libx264 @ 0x3a6c140] frame I:1 Avg QP: 6.68 size: 2396
[libx264 @ 0x3a6c140] frame P:18 Avg QP: 7.26 size: 583
[libx264 @ 0x3a6c140] frame B:51 Avg QP: 9.71 size: 74
[libx264 @ 0x3a6c140] consecutive B-frames: 2.9% 0.0% 0.0% 97.1%
[libx264 @ 0x3a6c140] mb I I16..4: 99.4% 0.0% 0.6%
[libx264 @ 0x3a6c140] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.3% 0.1% 0.1% 0.0% 0.0% skip:99.6%
[libx264 @ 0x3a6c140] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.1% 0.0% 0.0% direct: 0.0% skip:99.9% L0:53.1% L1:46.8% BI: 0.1%
[libx264 @ 0x3a6c140] 8x8 transform intra:0.0% inter:10.8%
[libx264 @ 0x3a6c140] coded y,uvDC,uvAC intra: 0.4% 0.0% 0.0% inter: 0.1% 0.0% 0.0%
[libx264 @ 0x3a6c140] i16 v,h,dc,p: 98% 0% 2% 0%
[libx264 @ 0x3a6c140] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 28% 26% 2% 5% 4% 10% 3% 6%
[libx264 @ 0x3a6c140] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x3a6c140] Weighted P-Frames: Y:44.4% UV:0.0%
[libx264 @ 0x3a6c140] ref P L0: 72.8% 11.4% 15.1% 0.2% 0.5%
[libx264 @ 0x3a6c140] ref B L0: 86.6% 13.4%
[libx264 @ 0x3a6c140] kb/s:19.03
frame= 124 fps= 82 q=29.0 size= 11kB time=00:00:02.40 bitrate= 37.0kbits/s dup=20 drop=0
frame= 150 fps= 77 q=-1.0 Lsize= 17kB time=00:00:04.93 bitrate= 28.3kbits/s dup=25 drop=0
video:14kB audio:0kB subtitle:0 global headers:0kB muxing overhead 17.449439%
[libx264 @ 0x32d6860] frame I:1 Avg QP:15.18 size: 6574
[libx264 @ 0x32d6860] frame P:38 Avg QP:10.44 size: 59
[libx264 @ 0x32d6860] frame B:111 Avg QP:13.67 size: 48
[libx264 @ 0x32d6860] consecutive B-frames: 1.3% 0.0% 0.0% 98.7%
[libx264 @ 0x32d6860] mb I I16..4: 97.4% 0.0% 2.6%
[libx264 @ 0x32d6860] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.0% 0.0% 0.0% 0.0% 0.0% skip:100.0%
[libx264 @ 0x32d6860] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0% 0.0% 0.0% direct: 0.0% skip:100.0% L0:69.8% L1:30.2% BI: 0.0%
[libx264 @ 0x32d6860] 8x8 transform intra:0.0% inter:12.5%
[libx264 @ 0x32d6860] coded y,uvDC,uvAC intra: 1.7% 0.0% 0.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x32d6860] i16 v,h,dc,p: 98% 0% 2% 0%
[libx264 @ 0x32d6860] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 47% 20% 14% 2% 2% 3% 4% 3% 4%
[libx264 @ 0x32d6860] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x32d6860] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x32d6860] ref B L0: 2.7% 97.3%
[libx264 @ 0x32d6860] kb/s:22.63
ffmpeg version N-57401-ga443b97 Copyright (c) 2000-2013 the FFmpeg developers
built on Oct 25 2013 05:34:36 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 47.101 / 52. 47.101
libavcodec 55. 38.101 / 55. 38.101
libavformat 55. 19.104 / 55. 19.104
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 89.100 / 3. 89.100
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro_vid_final-logo1.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.19.104
Duration: 00:00:05.01, start: 0.000000, bitrate: 27 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1720x752, 23 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc (default)
Metadata:
handler_name : VideoHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'silence.m4a':
Metadata:
major_brand : M4A
minor_version : 512
compatible_brands: isomiso2
encoder : Lavf55.19.104
Duration: 00:00:05.03, start: 0.033333, bitrate: 66 kb/s
Stream #1:0(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 64 kb/s (default)
Metadata:
handler_name : SoundHandler
Output #0, mp4, to 'intro_vid_final-intro.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.19.104
Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1720x752, q=2-31, 23 kb/s, 29.97 fps, 11988 tbn, 11988 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 64 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 150 fps=0.0 q=-1.0 Lsize= 60kB time=00:00:05.03 bitrate= 98.4kbits/s
video:14kB audio:39kB subtitle:0 global headers:0kB muxing overhead 12.325164%
ffmpeg version N-57401-ga443b97 Copyright (c) 2000-2013 the FFmpeg developers
built on Oct 25 2013 05:34:36 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/64bit --extra-cflags='-I/root/ffmpeg-static/64bit/include -static' --extra-ldflags='-L/root/ffmpeg-static/64bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 47.101 / 52. 47.101
libavcodec 55. 38.101 / 55. 38.101
libavformat 55. 19.104 / 55. 19.104
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 89.100 / 3. 89.100
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
[concat @ 0x2497f80] Estimating duration from bitrate, this may be inaccurate
Input #0, concat, from 'mylist.txt':
Duration: 00:00:00.01, start: 0.000000, bitrate: 86 kb/s
Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1720x752, 23 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc
Stream #0:1: Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 63 kb/s
Output #0, mp4, to 'intro_vid_final-final_ssh.mp4':
Metadata:
encoder : Lavf55.19.104
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1720x752, q=2-31, 23 kb/s, 29.97 fps, 11988 tbn, 11988 tbc
Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 63 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:0; previous: 58800, current: 51; changing to 58801. This may result in incorrect timestamps in the output file.
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:1; previous: 240640, current: 223455; changing to 240641. This may result in incorrect timestamps in the output file.
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:1; previous: 240641, current: 224479; changing to 240642. This may result in incorrect timestamps in the output file.
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:1; previous: 240642, current: 225503; changing to 240643. This may result in incorrect timestamps in the output file.
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:1; previous: 240643, current: 226527; changing to 240644. This may result in incorrect timestamps in the output file.
... about 400 similar line removed
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:0; previous: 59305, current: 556; changing to 59306. This may result in incorrect timestamps in the output file.
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:0; previous: 59306, current: 557; changing to 59307. This may result in incorrect timestamps in the output file.
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:0; previous: 59307, current: 558; changing to 59308. This may result in incorrect timestamps in the output file.
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:0; previous: 59308, current: 559; changing to 59309. This may result in incorrect timestamps in the output file.
[mp4 @ 0x24a7a00] Non-monotonous DTS in output stream 0:0; previous: 59309, current: 560; changing to 59310. This may result in incorrect timestamps in the output file.
frame= 660 fps=0.0 q=-1.0 Lsize= 2287kB time=00:00:50.99 bitrate= 367.4kbits/s
video:1763kB audio:507kB subtitle:0 global headers:0kB muxing overhead 0.759429%
Done!
iavideo@colfax:~/video/wip2$
memcoderを使用して2つのビデオを連結しようとしましたが、そこで問題が発生しました。コーデックやfps /ビットレートなどに関係していると思われるので、両方のビデオでスクリプトを10 fpsに微調整しました。これは、memcodersの出力です。
iavideo@colfax:~/video/wip2$ mencoder -oac pcm -ovc copy -o intro_vid_final_ssh_2.mp4 intro_vid_final-intro.mp4 ssh_main.mp4
MEncoder svn r34540 (Ubuntu), built with gcc-4.6 (C) 2000-2012 MPlayer Team
WARNING: OUTPUT FILE FORMAT IS _AVI_. See -of help.
success: format: 0 data: 0x0 - 0xd26c
libavformat version 53.21.1 (external)
Mismatching header version 53.19.0
libavformat file format detected.
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0, -alang und
VIDEO: [H264] 1720x752 24bpp 10.000 fps 17.7 kbps ( 2.2 kbyte/s)
[V] filefmt:44 fourcc:0x34363248 size:1720x752 fps:10.000 ftime:=0.1000
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
libavcodec version 53.35.0 (external)
Mismatching header version 53.32.2
AUDIO: 44100 Hz, 1 ch, s16le, 63.3 kbit/8.97% (ratio: 7914->88200)
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
videocodec: framecopy (1720x752 24bpp fourcc=34363248)
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Pos: 4.9s 50f (100%) 0.00fps Trem: 0min 0mb A-V:0.063 [18:705]
success: format: 0 data: 0x0 - 0x22f78d
libavformat file format detected.
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0, -alang und
VIDEO: [H264] 1720x752 24bpp 10.000 fps 280.8 kbps (34.3 kbyte/s)
[V] filefmt:44 fourcc:0x34363248 size:1720x752 fps:10.000 ftime:=0.1000
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 44100 Hz, 1 ch, s16le, 75.9 kbit/10.76% (ratio: 9493->88200)
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
videocodec: framecopy (1720x752 24bpp fourcc=34363248)
videocodec: framecopy (1720x752 24bpp fourcc=34363248)
All video files must have identical fps, resolution, and codec for -ovc copy.
Exiting...
iavideo@colfax:~/video/wip2$
MP4Boxを使用すると、AVCが異なるため、ファイルを連結できないというエラーが表示されます。出力は次のとおりです。
iavideo@colfax:~/video/wip2$ MP4Box -cat intro_vid_final-intro.mp4 -cat ssh_main.mp4 intro_vid_final_ssh_3.mp4
Appending file intro_vid_final-intro.mp4
Cannot concatenate files: Different AVC Profile Indication between source (100) and destination (66)
Appending file ssh_main.mp4
Saving intro_vid_final_ssh_3.mp4: 0.500 secs Interleaving
iavideo@colfax:~/video/wip2$
ソースファイルのコーデックが異なる場合やその他の違いがある場合は、concatdemuxerまたはconcatプロトコルを使用しないでください。 concatフィルターを使用します。これですべてが再エンコードされますが、安定した結果が得られます。
ffmpeg -i title -i main -y -filter_complex '[0:0] setsar=1/1[sarfix];[sarfix] [1:0] concat=n=2:v=1:a=0 [v]' -map '[v]' -pass 1 -strict -2 -an -vcodec libx264 -pix_fmt yuv420p -aspect 16:9 -threads 4 -b:v 2400k -flags +loop -cmp chroma -partitions +parti4x4+partp8x8+partb8x8 -subq 1 -trellis 0 -refs 1 -bf 3 -b_strategy 2 -coder 1 -me_range 16 -g 250 -keyint_min 75 -sc_threshold 40 -i_qfactor 0.71 -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 output.mp4 ffmpeg -i title -i main -y -filter_complex '[0:0] setsar=1/1[sarfix];[sarfix] [0:1] [1:0] [1:1] concat=n=2:v=1:a=1[v] [a]' -map '[v]' -map '[a]' -strict -2 -acodec aac -b:a 128k -pass 2 -vcodec libx264 -pix_fmt yuv420p -aspect 16:9 -threads 4 -b:v 2400k -flags +loop -cmp chroma -partitions +parti4x4+partp8x8+partb8x8 -mixed-refs 1 -subq 6 -trellis 1 -refs 5 -bf 3 -b_strategy 2 -coder 1 -me_range 16 -g 250 -keyint_min 75 -sc_threshold 40 -i_qfactor 0.71 -rc_eq 'blurCplx^(1-qComp)' -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 output.mp4
これは、2パスソリューションを示しています。パス1では、音声は無視されます。 2つのセクションの入力がどのように生成されるかは重要ではありません。