fix(deps): constrain PyAV version to resolve OpenCV-python ffmpeg version conflict (#883)

Co-authored-by: Simon Alibert <75076266+aliberts@users.noreply.github.com>

examples/10_use_so100.md

@@ -62,12 +62,6 @@ git clone https://github.com/huggingface/lerobot.git ~/lerobot
 cd ~/lerobot && pip install -e ".[feetech]"
 ```
 
-*EXTRA: For Linux only (not Mac)*: install extra dependencies for recording datasets:
-```bash
-conda install -y -c conda-forge ffmpeg
-pip uninstall -y opencv-python
-conda install -y -c conda-forge "opencv>=4.10.0"
-```
 Great :hugs:! You are now done installing LeRobot and we can begin assembling the SO100 arms :robot:.
 Every time you now want to use LeRobot you can go to the `~/lerobot` folder where we installed LeRobot and run one of the commands.
 

examples/11_use_lekiwi.md

@@ -113,12 +113,6 @@ git clone https://github.com/huggingface/lerobot.git ~/lerobot
 cd ~/lerobot && pip install -e ".[feetech]"
 ```
 
-*EXTRA: For Linux only (not Mac)*: install extra dependencies for recording datasets:
-```bash
-conda install -y -c conda-forge ffmpeg
-pip uninstall -y opencv-python
-conda install -y -c conda-forge "opencv>=4.10.0"
-```
 Great :hugs:! You are now done installing LeRobot and we can begin assembling the SO100 arms and Mobile base :robot:.
 Every time you now want to use LeRobot you can go to the `~/lerobot` folder where we installed LeRobot and run one of the commands.
 

examples/11_use_moss.md

@@ -36,13 +36,6 @@ git clone https://github.com/huggingface/lerobot.git ~/lerobot
 cd ~/lerobot && pip install -e ".[feetech]"
 ```
 
-For Linux only (not Mac), install extra dependencies for recording datasets:
-```bash
-conda install -y -c conda-forge ffmpeg
-pip uninstall -y opencv-python
-conda install -y -c conda-forge "opencv>=4.10.0"
-```
-
 ## Configure the motors
 
 Follow steps 1 of the [assembly video](https://www.youtube.com/watch?v=DA91NJOtMic) which illustrates the use of our scripts below.

examples/7_get_started_with_real_robot.md

@@ -46,13 +46,6 @@ Using `uv`:
 uv sync --extra "dynamixel"
 ```
 
-/!\ For Linux only, ffmpeg and opencv requires conda install for now. Run this exact sequence of commands:
-```bash
-conda install -c conda-forge ffmpeg
-pip uninstall opencv-python
-conda install -c conda-forge "opencv>=4.10.0"
-```
-
 You are now ready to plug the 5V power supply to the motor bus of the leader arm (the smaller one) since all its motors only require 5V.
 
 Then plug the 12V power supply to the motor bus of the follower arm. It has two motors that need 12V, and the rest will be powered with 5V through the voltage convertor.
@@ -834,11 +827,6 @@ It contains:
 - `dtRphone:33.84 (29.5hz)` which is the delta time of capturing an image from the phone camera in the thread running asynchronously.
 
 Troubleshooting:
-- On Linux, if you encounter a hanging issue when using cameras, uninstall opencv and re-install it with conda:
-```bash
-pip uninstall opencv-python
-conda install -c conda-forge opencv=4.10.0
-```
 - On Linux, if you encounter any issue during video encoding with `ffmpeg: unknown encoder libsvtav1`, you can:
   - install with conda-forge by running `conda install -c conda-forge ffmpeg` (it should be compiled with `libsvtav1`),
   - or, install [Homebrew](https://brew.sh) and run `brew install ffmpeg` (it should be compiled with `libsvtav1`),

examples/8_use_stretch.md

@@ -50,13 +50,6 @@ cd ~/lerobot && pip install -e ".[stretch]"
 
 > **Note:** If you get this message, you can ignore it: `ERROR: pip's dependency resolver does not currently take into account all the packages that are installed.`
 
-For Linux only (not Mac), install extra dependencies for recording datasets:
-```bash
-conda install -y -c conda-forge ffmpeg
-pip uninstall -y opencv-python
-conda install -y -c conda-forge "opencv>=4.10.0"
-```
-
 7. Run a [system check](https://docs.hello-robot.com/0.3/getting_started/stretch_hardware_overview/#system-check) to make sure your robot is ready:
 ```bash
 stretch_system_check.py

examples/9_use_aloha.md

@@ -35,13 +35,6 @@ git clone https://github.com/huggingface/lerobot.git ~/lerobot
 cd ~/lerobot && pip install -e ".[dynamixel, intelrealsense]"
 ```
 
-For Linux only (not Mac), install extra dependencies for recording datasets:
-```bash
-conda install -y -c conda-forge ffmpeg
-pip uninstall -y opencv-python
-conda install -y -c conda-forge "opencv>=4.10.0"
-```
-
 ## Teleoperate
 
 **/!\ FOR SAFETY, READ THIS /!\**

pyproject.toml

@@ -62,7 +62,7 @@ dependencies = [
     "omegaconf>=2.3.0",
     "opencv-python>=4.9.0",
     "packaging>=24.2",
-    "av>=12.0.5",
+    "av>=12.0.5,<13.0.0",
     "pymunk>=6.6.0",
     "pynput>=1.7.7",
     "pyzmq>=26.2.1",