using:
```
MP4Box - GPAC version 1.1.0-DEV-rev620-g9ed3d8d5c-ab-suite
(c) 2000-2021 Telecom Paris distributed under LGPL v2.1+ - http://gpac.io
        MINI build (encoders, decoders, audio and video output disabled)

Please cite our work in your research:
        GPAC Filters: https://doi.org/10.1145/3339825.3394929
        GPAC: https://doi.org/10.1145/1291233.1291452

GPAC Configuration: --prefix=/local64 --disable-shared --enable-static --static-mp4box
Features: GPAC_CONFIG_WIN32 GPAC_64_BITS GPAC_MINIMAL_ODF GPAC_HAS_QJS GPAC_HAS_FREETYPE GPAC_HAS_MAD GPAC_HAS_JPEG GPAC_HAS_PNG GPAC_HAS_XVID  GPAC_DISABLE_3D
```
on Windows 10 pro 64bit
and calling:
```
MP4Box -add "E:\Output\2021-04-07@19_44_24_2410_01.265"#video:fps=25 -tmp "E:\Output" -new "E:\Output\2021-04-07@19_44_24_2410__02.mp4"
```
I get:
```
Track Importing HEVC - Width 640 Height 352 FPS 25000/1000 SAR 1/1
HEVC Import results: 429 samples (433 NALUs) - Slices: 3 I 118 P 308 B - 1 SEI - 3 IDR
HEVC Stream uses forward prediction - stream CTS offset: 4 frames
HEVC Max NALU size is 17663 - stream could be optimized by setting nal_length=2
Saving E:\Output\2021-04-07@19_44_24_2410__02.mp4: 0.500 secs Interleaving
```
and a '_libgpac_5412_0000021fa3e762b0_0000021fa3e76b30.tmp' file that isn't cleaned up.
(Same happens when using .264 files)
Attached the the files: [Output.zip](https://github.com/gpac/gpac/files/6273590/Output.zip)

in case it matters MP4Box was build using https://github.com/m-ab-s/media-autobuild_suite

Cu Selur

Ps.: Same happens when I use a tmp-path that isn't the same as the output-path.

Temp files not cleaned up,..
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Temp files not cleaned up,..
Issue date:

--- start body ---
using:
```
MP4Box - GPAC version 1.1.0-DEV-rev620-g9ed3d8d5c-ab-suite
(c) 2000-2021 Telecom Paris distributed under LGPL v2.1+ - http://gpac.io
        MINI build (encoders, decoders, audio and video output disabled)

Please cite our work in your research:
        GPAC Filters: https://doi.org/10.1145/3339825.3394929
        GPAC: https://doi.org/10.1145/1291233.1291452

GPAC Configuration: --prefix=/local64 --disable-shared --enable-static --static-mp4box
Features: GPAC_CONFIG_WIN32 GPAC_64_BITS GPAC_MINIMAL_ODF GPAC_HAS_QJS GPAC_HAS_FREETYPE GPAC_HAS_MAD GPAC_HAS_JPEG GPAC_HAS_PNG GPAC_HAS_XVID  GPAC_DISABLE_3D
```
on Windows 10 pro 64bit
and calling:
```
MP4Box -add "E:\Output\2021-04-07@19_44_24_2410_01.265"#video:fps=25 -tmp "E:\Output" -new "E:\Output\2021-04-07@19_44_24_2410__02.mp4"
```
I get:
```
Track Importing HEVC - Width 640 Height 352 FPS 25000/1000 SAR 1/1
HEVC Import results: 429 samples (433 NALUs) - Slices: 3 I 118 P 308 B - 1 SEI - 3 IDR
HEVC Stream uses forward prediction - stream CTS offset: 4 frames
HEVC Max NALU size is 17663 - stream could be optimized by setting nal_length=2
Saving E:\Output\2021-04-07@19_44_24_2410__02.mp4: 0.500 secs Interleaving
```
and a '_libgpac_5412_0000021fa3e762b0_0000021fa3e76b30.tmp' file that isn't cleaned up.
(Same happens when using .264 files)
Attached the the files: [Output.zip](https://github.com/gpac/gpac/files/6273590/Output.zip)

in case it matters MP4Box was build using https://github.com/m-ab-s/media-autobuild_suite

Cu Selur

Ps.: Same happens when I use a tmp-path that isn't the same as the output-path.

--- end body ---
