ffmpeg3: updated to 3.4.1

version 3.4.1:
- avcodec/vp9_superframe_split_bsf: Fix integer overflow in frame_size/total_size checks
- avcodec/amrwbdec: Fix division by 0 in voice_factor()
- avformat/utils: Fix warning: ISO C90 forbids mixed declarations and code
- avcodec/decode: reset codec on receiving packet after EOF in compat_decode
- avcodec/diracdsp: Fix integer overflow in PUT_SIGNED_RECT_CLAMPED()
- avcodec/dirac_dwt: Fix integer overflows in COMPOSE_DAUB97*
- avcodec/extract_extradata_bsf: Fix leak discovered via fuzzing
- avcodec/vorbis: Fix another 1 << 31 > int32_t::max() with 1u.
- avcodec/vorbis: 1 << 31 > int32_t::max(), so use 1u << 31 instead.
- avformat/utils: Prevent undefined shift with wrap_bits > 64.
- avcodec/j2kenc: Fix out of array access in encode_cblk()
- avcodec/hevcdsp_template: Fix undefined shift in put_hevc_epel_bi_w_h()
- lavf/mov: fix huge alloc in mov_read_ctts
- avcodec/mlpdsp: Fix signed integer overflow, 2nd try
- avcodec/h264idct_template: Fix integer overflow in ff_h264_idct8_add
- avcodec/kgv1dec: Check that there is enough input for maximum RLE compression
- avformat/aacdec: Fix leak in adts_aac_read_packet()
- avcodec/dirac_dwt: Fix integer overflow in COMPOSE_FIDELITYi*
- avcodec/sbrdsp_fixed: Fix integer overflow
- avcodec/mpeg4videodec: Check also for negative versions in the validity check
- Close ogg stream upon error when using AV_EF_EXPLODE.
- Fix undefined shift on assumed 8-bit input.
- Use ff_thread_once for fixed, float table init.
- Fix leak of frame_duration_buffer in mov_fix_index().
- avformat/mov: Propagate errors in mov_switch_root.
- avcodec/hevcdsp_template: Fix invalid shift in put_hevc_epel_bi_w_v()
- avcodec/mlpdsp: Fix undefined shift ff_mlp_pack_output()
- avcodec/zmbv: Check that the buffer is large enough for mvec
- avcodec/dirac_dwt: Fix integer overflow in COMPOSE_DD137iL0()
- avcodec/wmv2dec: Check end of bitstream in parse_mb_skip() and ff_wmv2_decode_mb()
- avcodec/snowdec: Check for remaining bitstream in decode_blocks()
- avcodec/snowdec: Check intra block dc differences.
- avformat/mov: Check size of STSC allocation
- avcodec/vc2enc: Clear coef_buf on allocation
- avcodec/h264dec: Fix potential array overread
- avcodec/x86/mpegvideodsp: Fix signedness bug in need_emu
- avcodec/aacpsdsp_template: Fix integer overflows in ps_decorrelate_c()
- avcodec/aacdec_fixed: Fix undefined shift
- avcodec/mdct_*: Fix integer overflow in addition in RESCALE()
- avcodec/snowdec: Fix integer overflow in header parsing
- avcodec/cngdec: Fix integer clipping
- avcodec/sbrdsp_fixed: Fix integer overflow in shift in sbr_hf_g_filt_c()
- avcodec/aacsbr_fixed: Fix division by zero in sbr_gain_calc()
- avutil/softfloat: Add FLOAT_MIN
- avcodec/h264idct_template: Fix integer overflows in ff_h264_idct8_add()
- avcodec/xan: Check for bitstream end in xan_huffman_decode()
- avcodec/exr: fix undefined shift in pxr24_uncompress()
- avformat: Free the internal codec context at the end
- avcodec/h264idct_template: Fix integer overflows in ff_h264_idct8_add()
- avcodec/xan: Improve overlapping check
- avcodec/aacdec_fixed: Fix integer overflow in apply_dependent_coupling_fixed()
- avcodec/aacdec_fixed: Fix integer overflow in predict()
- avcodec/jpeglsdec: Check for end of bitstream in ls_decode_line()
- avcodec/jpeglsdec: Check ilv for being a supported value
- tests/ffserver.regression.ref: update checksums to what ffserver currently produces
- ffserver: Fix off by 1 error in path
- avcodec/proresdec: align dequantization matrix buffers
- avformat/matroskaenc: add missing allocation failure checks for stream durations
- avformat/matroskaenc: actually enforce the stream limit
- configure: Fix dependencies of aac_at decoder.
- Don't manipulate duration when it's AV_NOPTS_VALUE.
- lavfi/af_pan: fix sign handling in channel coefficient parser
- avformat/hlsenc: write fmp4 init header after first AV frame
- avformat/hlsenc: allocate space for terminating null
- avformat/hlsenc: reindent hlsenc code
- avformat/hlsenc: check hls segment mode for ignore the init filename
- avformat/hlsenc: reindent hlsenc code
- avformat/hlsenc: fix missing first segment bug in fmp4 mode
- avformat/hlsenc: fix base_output_dirname is null when basename_size is 0 bug
- ffplay: use SDL2 audio API
- ffplay: only use hardware accelerated SDL texture formats
- ffplay: create the window and the renderer before starting playback
- ffmpeg: always init output stream before reaping filters
- vc2enc_dwt: pad the temporary buffer by the slice size
- lavu/arm: Check for have_vfp_vm instead of !have_vfpv3 for float_dsp_vfp


(adam)