Title: FFMPEG & LIBAV Encode Error
Last modified: November 30, 2016

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# FFMPEG & LIBAV Encode Error

 *  Resolved [ngsilver](https://wordpress.org/support/users/ngsilver/)
 * (@ngsilver)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/ffmpeg-libav-encode-error/)
 * I keep getting an error no matter if I’m using libav or ffmpeg. I am using a 
   Windows host and when I try the test scripts they output files no issue. I have
   also added both libav and ffmpeg to my path.
 * Error I see from encoder queue: ⌊encode error⌉
 * ffmpeg test:
 * > /ffmpeg/bin/ffmpeg -y -i “C:\inetpub\wwwroot\wp-content\plugins\video-embed-
   > thumbnail-generator/images/sample-video-h264.mp4” -acodec aac -strict experimental-
   > b:a 160k -s 640×360 -vcodec libx264 -movflags faststart -profile:v baseline-
   > pix_fmt yuv420p -level:v 30 -crf 23 -threads 1 “C:\inetpub\wwwroot/wp-content/
   > uploads/2016/11/sample-video-h264-360.mp4”
 * ffmpeg outpu:
 * > ffmpeg version 3.2 Copyright (c) 2000-2016 the FFmpeg developers
   >  built with
   > gcc 5.4.0 (GCC) configuration: –enable-gpl –enable-version3 –disable-w32threads–
   > enable-dxva2 –enable-libmfx –enable-nvenc –enable-avisynth –enable-bzlib –enable-
   > libebur128 –enable-fontconfig –enable-frei0r –enable-gnutls –enable-iconv –
   > enable-libass –enable-libbluray –enable-libbs2b –enable-libcaca –enable-libfreetype–
   > enable-libgme –enable-libgsm –enable-libilbc –enable-libmodplug –enable-libmp3lame–
   > enable-libopencore-amrnb –enable-libopencore-amrwb –enable-libopenh264 –enable-
   > libopenjpeg –enable-libopus –enable-librtmp –enable-libschroedinger –enable-
   > libsnappy –enable-libsoxr –enable-libspeex –enable-libtheora –enable-libtwolame–
   > enable-libvidstab –enable-libvo-amrwbenc –enable-libvorbis –enable-libvpx –
   > enable-libwavpack –enable-libwebp –enable-libx264 –enable-libx265 –enable-libxavs–
   > enable-libxvid –enable-libzimg –enable-lzma –enable-decklink –enable-zlib libavutil
   > 55. 34.100 / 55. 34.100 libavcodec 57. 64.100 / 57. 64.100 libavformat 57. 
   > 56.100 / 57. 56.100 libavdevice 57. 1.100 / 57. 1.100 libavfilter 6. 65.100/
   > 6. 65.100 libswscale 4. 2.100 / 4. 2.100 libswresample 2. 3.100 / 2. 3.100 
   > libpostproc 54. 1.100 / 54. 1.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ‘
   > C:\inetpub\wwwroot\wp-content\plugins\video-embed-thumbnail-generator/images/
   > sample-video-h264.mp4’: Metadata: major_brand : isom minor_version : 512 compatible_brands:
   > isomiso2avc1mp41 encoder : Lavf55.33.100 Duration: 00:00:01.02, start: 0.000000,
   > bitrate: 123 kb/s Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1/
   > 0x31637661), yuv420p, 1920×1080 [SAR 1:1 DAR 16:9], 109 kb/s, 23.98 fps, 23.98
   > tbr, 11988 tbn, 47.95 tbc (default) Metadata: handler_name : VideoHandler Stream#
   > 0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/
   > s (default) Metadata: handler_name : SoundHandler [libx264 @ 00000000008bab60]
   > using SAR=1/1 [libx264 @ 00000000008bab60] using cpu capabilities: MMX2 SSE2Fast
   > SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2 [libx264 @ 00000000008bab60] profile 
   > Constrained Baseline, level 3.0 [libx264 @ 00000000008bab60] 264 – core 148
   > r2721 72d53ab – H.264/MPEG-4 AVC codec – Copyleft 2003-2016 – [http://www.videolan.org/x264.html](http://www.videolan.org/x264.html)–
   > options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 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=1 lookahead_threads
   > =1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra
   > =0 bframes=0 weightp=0 keyint=250 keyint_min=23 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 ‘C:\inetpub\wwwroot/wp-content/
   > uploads/2016/11/sample-video-h264-360.mp4’: Metadata: major_brand : isom minor_version:
   > 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf57.56.100 Stream #0:0(
   > eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640×360 [SAR
   > 1:1 DAR 16:9], q=-1–1, 23.98 fps, 11988 tbn, 23.98 tbc (default) Metadata: 
   > handler_name : VideoHandler encoder : Lavc57.64.100 libx264 Side data: cpb:
   > bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1 Stream #0:1(eng): Audio:
   > aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 160 kb/s (default)
   > Metadata: handler_name : SoundHandler encoder : Lavc57.64.100 aac Stream mapping:
   > Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264)) Stream #0:1 -> #0:1 (
   > aac (native) -> aac (native)) Press [q] to stop, [?] for help [mp4 @ 00000000009d3760]
   > Starting second pass: moving the moov atom to the beginning of the file frame
   > = 24 fps=0.0 q=28.0 Lsize= 6kB time=00:00:01.00 bitrate= 48.3kbits/s speed=
   > 7.12x video:4kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
   > muxing overhead: 43.487545% [libx264 @ 00000000008bab60] frame I:1 Avg QP:11.82
   > size: 2894 [libx264 @ 00000000008bab60] frame P:23 Avg QP:11.50 size: 17 [libx264
   > @ 00000000008bab60] mb I I16..4: 94.3% 0.0% 5.7% [libx264 @ 00000000008bab60]
   > mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.1% 0.0% 0.0% 0.0% 0.0% skip:99.9% [libx264
   > @ 00000000008bab60] coded y,uvDC,uvAC intra: 3.3% 0.0% 0.0% inter: 0.0% 0.0%
   > 0.0% [libx264 @ 00000000008bab60] i16 v,h,dc,p: 94% 1% 5% 0% [libx264 @ 00000000008bab60]
   > i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 18% 25% 3% 3% 7% 3% 5% 3% [libx264 @ 00000000008bab60]
   > i8c dc,h,v,p: 100% 0% 0% 0% [libx264 @ 00000000008bab60] kb/s:26.23 [aac @ 
   > 000000000099a8a0] Qavg: 65536.000
 * libav test:
 * > /libav/usr/bin/avconv -y -i “C:\inetpub\wwwroot\wp-content\plugins\video-embed-
   > thumbnail-generator/images/sample-video-h264.mp4” -acodec aac -strict experimental-
   > b:a 160k -s 1920×1080 -vcodec libx264 -movflags faststart -profile:v baseline-
   > pix_fmt yuv420p -level:v 30 -crf 23 -threads 1 “C:\inetpub\wwwroot/wp-content/
   > uploads/2016/11/sample-video-h264-1080.mp4”
 * libav output:
 * > avconv version v11.7, Copyright (c) 2000-2016 the Libav developers
   >  built on
   > Jun 1 2016 09:33:55 with gcc 4.8.3 (Gentoo 4.8.3 p1.1, pie-0.5.9) Input #0,
   > mov,mp4,m4a,3gp,3g2,mj2, from ‘C:\inetpub\wwwroot\wp-content\plugins\video-
   > embed-thumbnail-generator/images/sample-video-h264.mp4’: Metadata: major_brand:
   > isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf55.33.100
   > Duration: 00:00:01.02, start: 0.021333, bitrate: 123 kb/s Stream #0.0(eng):
   > Video: h264 (Constrained Baseline), yuv420p, 1920×1080 [PAR 1:1 DAR 16:9], 
   > 109 kb/s, 23.98 fps, 11988 tbn, 47.95 tbc (default) Stream #0.1(eng): Audio:
   > aac, 48000 Hz, stereo, fltp, 2 kb/s (default) [libx264 @ 0000000000d2e6a0] 
   > using SAR=1/1 [libx264 @ 0000000000d2e6a0] frame MB size (120×68) > level limit(
   > 1620) [libx264 @ 0000000000d2e6a0] DPB size (3 frames, 24480 mbs) > level limit(
   > 0 frames, 8100 mbs) [libx264 @ 0000000000d2e6a0] MB rate (195644) > level limit(
   > 40500) [libx264 @ 0000000000d2e6a0] using cpu capabilities: MMX2 SSE2Fast SSSE3
   > SSE4.2 AVX AVX2 FMA3 LZCNT BMI2 [libx264 @ 0000000000d2e6a0] profile Constrained
   > Baseline, level 3.0 [libx264 @ 0000000000d2e6a0] 264 – core 142 – H.264/MPEG-
   > 4 AVC codec – Copyleft 2003-2014 – [http://www.videolan.org/x264.html](http://www.videolan.org/x264.html)–
   > options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 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=1 lookahead_threads
   > =1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra
   > =0 bframes=0 weightp=0 keyint=250 keyint_min=23 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 ‘C:\inetpub\wwwroot/wp-content/
   > uploads/2016/11/sample-video-h264-1080.mp4’: Metadata: major_brand : isom minor_version:
   > 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf56.1.0 Stream #0.0(eng):
   > Video: libx264, yuv420p, 1920×1080 [PAR 1:1 DAR 16:9], q=-1–1, 23.98 fps, 24k
   > tbn, 23.98 tbc (default) Metadata: encoder : Lavc56.1.0 libx264 Stream #0.1(
   > eng): Audio: libvo_aacenc, 48000 Hz, stereo, fltp, 160 kb/s (default) Metadata:
   > encoder : Lavc56.1.0 aac Stream mapping: Stream #0:0 -> #0:0 (h264 (native)-
   > > h264 (libx264)) Stream #0:1 -> #0:1 (aac (native) -> aac (native)) Press 
   > ctrl-c to stop encoding [mp4 @ 0000000000d2e140] Starting second pass: moving
   > the moov atom to the beginning of the file frame= 24 fps= 0 q=28.0 Lsize= 15kB
   > time=1.00 bitrate= 126.4kbits/s video:13kB audio:0kB other streams:0kB global
   > headers:0kB muxing overhead: 13.763843% [libx264 @ 0000000000d2e6a0] frame 
   > I:1 Avg QP:11.37 size: 12192 [libx264 @ 0000000000d2e6a0] frame P:23 Avg QP:
   > 13.85 size: 34 [libx264 @ 0000000000d2e6a0] mb I I16..4: 97.7% 0.0% 2.3% [libx264
   > @ 0000000000d2e6a0] 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 @ 0000000000d2e6a0] coded y,uvDC,uvAC intra: 1.2%
   > 0.0% 0.0% inter: 0.0% 0.0% 0.0% [libx264 @ 0000000000d2e6a0] i16 v,h,dc,p: 
   > 98% 0% 2% 0% [libx264 @ 0000000000d2e6a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 38%
   > 16% 22% 6% 2% 6% 2% 6% 2% [libx264 @ 0000000000d2e6a0] i8c dc,h,v,p: 100% 0%
   > 0% 0% [libx264 @ 0000000000d2e6a0] ref P L0: 81.0% 15.9% 3.2% [libx264 @ 0000000000d2e6a0]
   > kb/s:103.78
 * I will say that libav seems to work faster and lighter on my system so I’d prefer
   to use that option if able. Just not sure why I keep getting the error upon encoding
   from the queue. If I could pull the queue command I’d love to see it and test
   that to see if there is some formatting issue.
 * I have the plugins installed to: C:\ffmpeg\bin and c:\libav\usr\bin
    I have each
   configured as: /ffmpeg/bin and /libav/usr/bin

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Kyle Gilman](https://wordpress.org/support/users/kylegilman/)
 * (@kylegilman)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/ffmpeg-libav-encode-error/#post-8498203)
 * Thanks for the detailed info. Once we get this working it shouldn’t matter if
   you use FFMPEG or LIBAV. The plugin should work with either one the same. I don’t
   have a Windows system to test this on so I rely on users to point out when there’s
   a problem and looking at the FFMPEG/LIBAV test function now it seems like I’m
   not testing the full Windows command. When encoding videos, in order to avoid
   locking up PHP waiting for execution to finish, FFMPEG is loaded using `start/
   B` and I suspect I’m not enclosing something in quotes correctly because Windows
   is interpreting the `/ffmpeg` which comes right after `start /B` as a flag rather
   than a command. Does it work if you change the plugin setting to `C:/libav/usr/
   bin` instead of a forward slash? You could also experiment with a regular Windows
   path `C:\libav\usr\bin`
 *  Thread Starter [ngsilver](https://wordpress.org/support/users/ngsilver/)
 * (@ngsilver)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/ffmpeg-libav-encode-error/#post-8499050)
 * After switching to C:/ rather then / it seems to have fixed the issue at this
   time. Overlooked that as an option during configuration. Thanks.
 *  Plugin Author [Kyle Gilman](https://wordpress.org/support/users/kylegilman/)
 * (@kylegilman)
 * [9 years, 6 months ago](https://wordpress.org/support/topic/ffmpeg-libav-encode-error/#post-8504580)
 * Great! And I’ll try to find a way of escaping the command in Windows if the path
   starts with a forward slash.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘FFMPEG & LIBAV Encode Error’ is closed to new replies.

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 * 3 replies
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 * Last activity: [9 years, 6 months ago](https://wordpress.org/support/topic/ffmpeg-libav-encode-error/#post-8504580)
 * Status: resolved