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• Permission denied when trying to save a file with ffmpeg

  20 mars 2023, par Hoff

  I'm sending an audio blob to my deno/oak server, and I want to encode it as mp3 using deno_ffmpeg but I'm getting a Permission denied (os error 13) error.

  


  With operations like Deno.rename(), I am able to save files just fine. Just not when calling ffmpeg.save().

  


  Here is the code in question :

  


  const body = await context.request.body({ type: 'form-data' })
const data = await body.value.read()
const audioFile = data.files[0]

const ffmpegClass = new ffmpeg({ input: audioFile.filename, ffmpegDir: '.' })
await ffmpegClass.save('./output.mp3')


  


  The last line triggers this error :

  


  PermissionDenied: Permission denied (os error 13)
    at opRun (internal:runtime/js/40_process.js:33:14)
    at Object.run (internal:runtime/js/40_process.js:119:15)
    at FfmpegClass.save (https://deno.land/x/deno_ffmpeg@v3.1.0/src/ffmpegClass.ts:506:26)


  


  This happens despite running the server with --allow-run and --allow-write or even --allow-all

  


  Persission on the root directory are drwxrw-rw- (chmod 766).

  


  I'm out of ideas as to what is causing this permissions error, any ideas would be highly appreciated !

  


• Revision 1fcbf6ed56 : Skip the partition search for still frames This patch re-enabled the feature in

  24 septembre 2014, par Yunqing Wang

  Changed Paths :
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_encoder.c

  
   Modify /vp9/encoder/vp9_encoder.h

  
   Modify /vp9/encoder/vp9_speed_features.c

  
   Modify /vp9/encoder/vp9_speed_features.h

  
  
  Skip the partition search for still frames

  This patch re-enabled the feature in Pengchong’s patch
  (commit 12861260732a4fd5f6b667ce9d5105dc9b606eda). Originally, it
  was turned on while use_lastframe_partitioning > 0(not used anymore).
  Now it was added as a feature, and turned on while speed >= 2.
  As described in the original patch, this feature helps speed up the
  slideshows in YouTube.

  Change-Id : I1b0f18d65da1ee1c8d1e117dabba910c5207c471

• libswresample/swresamplec : Err num(negative-size) was used as a function parameter

  8 décembre 2021, par Yu Yang

  libswresample/swresamplec : Err num(negative-size) was used as a function parameter
  If memory allocation fails, ERROR(ENOMEM) '-12' will be returned.
  
  When resample() is done first, the negative size param would cause buffer-overflow and SEGV in swri_rematrix().
  
  When swri_rematrix() is run first, resample() would not cause an error but Err num as a wrong parameter passing.
  
  Err num should be returned immediately. And remove an unneeded term from an assert.
  coredump info :
  
      #0 0x499517 in posix_memalign (/home/r1/ffmpeg/ffmpeg_4.4.1+0x499517)
  
      #1 0x6c1f0b4 in av_malloc /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavutil/mem.c:86:9
  
      #2 0x6c208fe in av_mallocz /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavutil/mem.c:239:17
  
      #3 0x6c207ad in av_mallocz_array /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavutil/mem.c:195:12
  
      #4 0x654b2e5 in swri_realloc_audio /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libswresample/swresample.c:418:14
  
      #5 0x654f9a1 in swr_convert_internal /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libswresample/swresample.c:601:17
  
      #6 0x654d2c0 in swr_convert /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libswresample/swresample.c:766:19
  
      #7 0x186cf56 in flush_frame /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/af_aresample.c:251:13
  
      #8 0x186a454 in request_frame /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/af_aresample.c:288:20
  
      #9 0x787d9c in ff_request_frame_to_filter /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfilter.c:459:15
  
      #10 0x7877f1 in forward_status_change /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfilter.c:1257:19
  
      #11 0x77ed7e in ff_filter_activate_default /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfilter.c:1288:20
  
      #12 0x77e4e1 in ff_filter_activate /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfilter.c:1441:11
  
      #13 0x793b3f in ff_filter_graph_run_once /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfiltergraph.c:1403:12
  
      #14 0x7a7bee in get_frame_internal /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/buffersink.c:131:19
  
      #15 0x7a7287 in av_buffersink_get_frame_flags /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/buffersink.c:142:12
  
      #16 0x792888 in avfilter_graph_request_oldest /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/libavfilter/avfiltergraph.c:1356:17
  
      #17 0x5d07df in transcode_from_filter /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/fftools/ffmpeg.c:4639:11
  
      #18 0x59e557 in transcode_step /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/fftools/ffmpeg.c:4729:20
  
      #19 0x593970 in transcode /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/fftools/ffmpeg.c:4805:15
  
      #20 0x58f7a4 in main /home/r1/ffmpeg/ffmpeg-4.4.1/build/src/fftools/ffmpeg.c:5010:9
  
      #21 0x7f6fd2dee0b2 in __libc_start_main /build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
  SUMMARY : AddressSanitizer : negative-size-param (/home/r1/ffmpeg/ffmpeg_4.4.1+0x497e67) in __asan_memcpy
  Reported-by : TOTE Robot <oslab@tsinghua.edu.cn>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libswresample/swresample.c