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Duplicates first frame when exporting .mp4 from source .mp2 or .mp4

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Thomas Demirian
Duplicates first frame when exporting .mp4 from source .mp2 or .mp4
on Aug 11, 2014 at 9:18:29 am

ffmpeg always ads a duplicate frame of the first frame to my clips when I export a .mp4 file from a source .mpeg or mp4. And by doing that it always make the clip one frame longer.

If I use an uncompressed format as source everything is fine.

Does anyone have a solution?


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Jim Sustacek
Re: Duplicates first frame when exporting .mp4 from source .mp2 or .mp4
on Aug 12, 2014 at 12:13:39 pm

Probably going to need the full ffmpeg command and console output, if not a link to a sample file too.


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Thomas Demirian
Re: Duplicates first frame when exporting .mp4 from source .mp2 or .mp4
on Aug 12, 2014 at 12:58:56 pm

My source file is 20 seconds. The exported video according to MEDIA INFO is: 20s87ms. The video is 20s40ms and the audio is 20s87ms.

And when I open the file in Any adobe application it also shows one frame more. And its placed in the beginning. A duplicate of the first frame.

ffmpeg command

ffmpeg -y -i x.mp4 -pix_fmt yuv420p -direct-pred auto -aspect 16:9 -s 1024x576 -vcodec libx264 -bufsize 2500k -b:v 2500k -vmaxrate 3000k -vminrate 200k -vprofile baseline -level 3.1 -g 100 -bf 3 -x264opts b-pyramid=0 -coder 0 -movflags faststart -pass 1 -an -f rawvideo /dev/null && \
ffmpeg -y -i x.mp4 -pix_fmt yuv420p -direct-pred auto -aspect 16:9 -s 1024x576 -vcodec libx264 -bufsize 2500k -b:v 2500k -vmaxrate 3000k -vminrate 200k -vprofile baseline -level 3.1 -g 100 -bf 3 -x264opts b-pyramid=0 -coder 0 -movflags faststart -acodec libvo_aacenc -ar 48000 -b:a 128000 -aprofile aac_low -ac 2 -f mp4 -preset slow -pass 2 \
high1.mp4


Console Output

Last login: Tue Aug 12 14:50:49 on ttys000
Thomas-MacBook-Pro:~ Thomas$ cd /Users/Thomas/Desktop/Redmine_and_Others/2001_Proxy_for_ecexpress/Download
Thomas-MacBook-Pro:Download Thomas$ ffmpeg -y -i x.mp4 -pix_fmt yuv420p -direct-pred auto -aspect 16:9 -s 1024x576 -vcodec libx264 -bufsize 2500k -b:v 2500k -vmaxrate 3000k -vminrate 200k -vprofile baseline -level 3.1 -g 100 -bf 3 -x264opts b-pyramid=0 -coder 0 -movflags faststart -pass 1 -an -f rawvideo /dev/null && \
> ffmpeg -y -i x.mp4 -pix_fmt yuv420p -direct-pred auto -aspect 16:9 -s 1024x576 -vcodec libx264 -bufsize 2500k -b:v 2500k -vmaxrate 3000k -vminrate 200k -vprofile baseline -level 3.1 -g 100 -bf 3 -x264opts b-pyramid=0 -coder 0 -movflags faststart -acodec libvo_aacenc -ar 48000 -b:a 128000 -aprofile aac_low -ac 2 -f mp4 -preset slow -pass 2 \
> high1.mp4
ffmpeg version 2.2.4-tessus Copyright (c) 2000-2014 the FFmpeg developers
built on Jun 29 2014 16:35:46 with clang version 3.3 (tags/RELEASE_33/final)
configuration: --cc=/opt/local/bin/clang-mp-3.3 --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-libmodplug --enable-fontconfig --enable-libfreetype --enable-libass --enable-libbluray --enable-filters --disable-indev=qtkit --enable-runtime-cpudetect
libavutil 52. 66.100 / 52. 66.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 33.100 / 55. 33.100
libavdevice 55. 10.100 / 55. 10.100
libavfilter 4. 2.100 / 4. 2.100
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'x.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41
creation_time : 2014-05-13 19:22:28
Duration: 00:00:20.05, start: 0.000000, bitrate: 47586 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], 47387 kb/s, 25 fps, 25 tbr, 50k tbn, 50 tbc (default)
Metadata:
creation_time : 2014-05-13 19:22:28
handler_name : Alias Data Handler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
Metadata:
creation_time : 2014-05-13 19:22:28
handler_name : Alias Data Handler
[libx264 @ 0x103000600] using SAR=1/1
[libx264 @ 0x103000600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
[libx264 @ 0x103000600] profile Constrained Baseline, level 3.1
Output #0, rawvideo, to '/dev/null':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41
encoder : Lavf55.33.100
Stream #0:0(eng): Video: h264 (libx264), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], q=-1--1, pass 1, 2500 kb/s, 90k tbn, 25 tbc (default)
Metadata:
creation_time : 2014-05-13 19:22:28
handler_name : Alias Data Handler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Press [q] to stop, [?] for help
frame= 501 fps= 65 q=-1.0 Lsize= 6200kB time=00:00:20.04 bitrate=2534.3kbits/s dup=1 drop=0
video:6200kB audio:0kB subtitle:0 data:0 global headers:0kB muxing overhead 0.000000%
[libx264 @ 0x103000600] frame I:12 Avg QP:14.41 size: 64532
[libx264 @ 0x103000600] frame P:489 Avg QP:16.86 size: 11399
[libx264 @ 0x103000600] mb I I16..4: 38.1% 0.0% 61.9%
[libx264 @ 0x103000600] mb P I16..4: 16.4% 0.0% 0.0% P16..4: 60.9% 0.0% 0.0% 0.0% 0.0% skip:22.8%
[libx264 @ 0x103000600] coded y,uvDC,uvAC intra: 30.5% 60.4% 37.1% inter: 25.9% 27.1% 0.9%
[libx264 @ 0x103000600] i16 v,h,dc,p: 68% 13% 14% 5%
[libx264 @ 0x103000600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 14% 14% 9% 8% 10% 6% 10% 6%
[libx264 @ 0x103000600] i8c dc,h,v,p: 61% 15% 20% 4%
[libx264 @ 0x103000600] kb/s:2534.32
ffmpeg version 2.2.4-tessus Copyright (c) 2000-2014 the FFmpeg developers
built on Jun 29 2014 16:35:46 with clang version 3.3 (tags/RELEASE_33/final)
configuration: --cc=/opt/local/bin/clang-mp-3.3 --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-libmodplug --enable-fontconfig --enable-libfreetype --enable-libass --enable-libbluray --enable-filters --disable-indev=qtkit --enable-runtime-cpudetect
libavutil 52. 66.100 / 52. 66.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 33.100 / 55. 33.100
libavdevice 55. 10.100 / 55. 10.100
libavfilter 4. 2.100 / 4. 2.100
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'x.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41
creation_time : 2014-05-13 19:22:28
Duration: 00:00:20.05, start: 0.000000, bitrate: 47586 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], 47387 kb/s, 25 fps, 25 tbr, 50k tbn, 50 tbc (default)
Metadata:
creation_time : 2014-05-13 19:22:28
handler_name : Alias Data Handler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
Metadata:
creation_time : 2014-05-13 19:22:28
handler_name : Alias Data Handler
[libx264 @ 0x103094600] using SAR=1/1
[libx264 @ 0x103094600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
[libx264 @ 0x103094600] profile Constrained Baseline, level 3.1
[libx264 @ 0x103094600] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=5 deblock=1:0:0 analyse=0x1:0x111 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 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=0 weightp=0 keyint=100 keyint_min=10 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=2pass mbtree=1 bitrate=2500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5 vbv_maxrate=3000 vbv_bufsize=2500 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'high1.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41
encoder : Lavf55.33.100
Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], q=-1--1, pass 2, 2500 kb/s, 12800 tbn, 25 tbc (default)
Metadata:
creation_time : 2014-05-13 19:22:28
handler_name : Alias Data Handler
Stream #0:1(eng): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s (default)
Metadata:
creation_time : 2014-05-13 19:22:28
handler_name : Alias Data Handler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
Press [q] to stop, [?] for help
[mp4 @ 0x103094000] Starting second pass: moving the moov atom to the beginning of the file0
frame= 501 fps= 21 q=-1.0 Lsize= 6437kB time=00:00:20.06 bitrate=2628.2kbits/s dup=1 drop=0
video:6110kB audio:314kB subtitle:0 data:0 global headers:0kB muxing overhead 0.191460%
[libx264 @ 0x103094600] frame I:12 Avg QP:14.50 size: 70089
[libx264 @ 0x103094600] frame P:489 Avg QP:17.35 size: 11073
[libx264 @ 0x103094600] mb I I16..4: 23.5% 0.0% 76.5%
[libx264 @ 0x103094600] mb P I16..4: 1.1% 0.0% 0.4% P16..4: 52.7% 19.7% 8.9% 0.0% 0.0% skip:17.2%
[libx264 @ 0x103094600] coded y,uvDC,uvAC intra: 66.7% 86.1% 73.9% inter: 19.0% 38.2% 2.4%
[libx264 @ 0x103094600] i16 v,h,dc,p: 64% 11% 9% 16%
[libx264 @ 0x103094600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 9% 5% 7% 14% 16% 16% 11% 14% 8%
[libx264 @ 0x103094600] i8c dc,h,v,p: 56% 15% 19% 10%
[libx264 @ 0x103094600] ref P L0: 59.0% 18.7% 12.3% 5.3% 4.7%
[libx264 @ 0x103094600] kb/s:2497.35
Thomas-MacBook-Pro:Download Thomas$


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